WorldWideScience

Sample records for pipeline construction project

  1. Field experience with a novel pipe protection and monitoring system for large offshore pipeline construction projects

    Energy Technology Data Exchange (ETDEWEB)

    Magerstaedt, Michael; Blitz, Gunther [ROSEN Swiss AG, Stans (Switzerland); Sabido, Carlos E. [ROSEN Technology and Research Center, Lingen (Germany)

    2012-07-01

    For pipe joints stored during large-scale offshore pipeline construction projects, corrosion protection as well as protection from physical damage of pipelines is very important. Integrity Management does not just start with the operation of a pipeline. In the past, with the much lower risks and cost at stake in on shore constriction, this factor was often overlooked. Sometimes, newly laid pipelines failed upon hydrostatic testing or even during operation. Causes were corrosion or damage the pipe joints took before pipeline laying. For offshore projects, the cost and consequences associated with such failures are orders of magnitude higher and must be avoided by all means. Within six months from the conception of the idea, a system was developed and deployed that protected (and in part still protects) a large number of pipe joints used in a European offshore gas pipeline project more than 2000 km. The pipe joints were physically protected from corrosion, interior contamination, and condensation. At the same time, the system provided real-time monitoring of more than 100'000 pipe joints stored at 5 storage yards distributed over 3 countries with distances of more than 1200 km apart from each other. Every single joint was identified with its location and status at every time during the storage period. Any third-party interference was transmitted to a central control room in real time as well. Protection of the pipe joints was provided vs.: corrosion of pipe joint end cutbacks exposed to the maritime climate for up to 2 years; contamination of the pipe interior by: foreign material, dirt, water, ice, animals. Third party damage to the pipe joints; damage to the protection system or to the transmission network; fire; theft of pipe joints or other equipment. System features were: modular pipe caps that, protect the pipe interior, cover both inner and outer cutback, allow ventilation of the pipe interior, continuously monitor each pipe joint for third party damage

  2. Effects of Pipeline Construction on Wetland Ecosystems: Russia-China Oil Pipeline Project (Mohe-Daqing Section)

    Energy Technology Data Exchange (ETDEWEB)

    Xiaofei Yu; Guoping Wang; Yuanchun Zou; Qiang Wang; Hongmei Zhao; Xianguo Lu (Key Lab of Wetland Ecology and Environment, Northeast Inst. of Geography and Agroecology, Changchun (China)), e-mail: wangguoping@neigae.ac.cn

    2010-07-15

    Although the multiple roles of wetland ecosystems and their value to humanity have been increasingly understood and documented in recent years, the efforts to conserve and restore wetlands are not in harmony with the press for high speed of economy growth. The degradation of wetlands is proceeding, especially in China. Russia- China Oil Pipe-line Project (Mohe-Daqing Section) has already begun in May 2009, and is ongoing. The pipeline runs through four riverine wetlands and two marshlands of Heilongjiang Province, Northeast China. Although the project has vital significance of mitigating the energy crisis as well as guaranteeing the energy security of China, it will bring a series of ecological and environmental problems, especially for wetland ecosystems

  3. CPECC Contracts Oil Products Pipeline Construction in Pakistan

    Institute of Scientific and Technical Information of China (English)

    Wang Yong

    2002-01-01

    @@ China Petroleum Engineering & Construction Corporation (CPECC), a subsidiary of CNPC, and Pak-Arab Pipeline Company (PARCO) of Pakistan have recently reached an agreement to confirm the US$317-million contract for construction a pipeline for oil products in Pakistan by CPECC. The project is called the white oil pipeline project (WOPP)running from Karachi to Mahmood Kot, the distribution center of oil products in the northwest part of the country.

  4. 市政工程给水管道施工质量控制%Construction Quality Control of Municipal Project Water Pipeline

    Institute of Scientific and Technical Information of China (English)

    卢啸

    2015-01-01

    The construction of each municipal water pipeline project, the relevant departments in the work, such as quality monitoring and management deficiencies still exist. So, how to solve the various failures of municipal water supply pipeline construction projects that appear in the relevant construction workers question worth considering.%在各个城市市政工程给水管道的施工中,相关部门在质量监测和管理等方面的工作中仍然存在不足之处。因此,如何解决市政工程给水管道施工中出现的各种故障,是相关施工人员值得思考的问题。

  5. West-to-East Pipeline Entirely Comes under Construction

    Institute of Scientific and Technical Information of China (English)

    Zhang Zhicheng

    2002-01-01

    @@ PetroChina West-to-East Pipleline Company announced at a press conference held in February that the Chinese Government has formally approved the feasibility study report of the nation-crossing pipeline, marking that the 4200-kilometer pipeline project was brought under construction.

  6. Pipeline and Regional Carbon Capture Storage Project

    Energy Technology Data Exchange (ETDEWEB)

    Burger, Chris; Wortman, David; Brown, Chris; Hassan, Syed; Humphreys, Ken; Willford, Mark

    2016-03-31

    The U.S. Department of Energy’s (DOE) FutureGen 2.0 Program involves two projects: (1) the Oxy-Combustion Power Plant Project and (2) the CO2 Pipeline and Storage Project. This Final Technical Report is focused on the CO2 Pipeline and Storage Project. The FutureGen 2.0 CO2 Pipeline and Storage Project evolved from an initial siting and project definition effort in Phase I, into the Phase II activity consisting permitting, design development, the acquisition of land rights, facility design, and licensing and regulatory approvals. Phase II also progressed into construction packaging, construction procurement, and targeted early preparatory activities in the field. The CO2 Pipeline and Storage Project accomplishments were significant, and in some cases unprecedented. The engineering, permitting, legal, stakeholder, and commercial learnings substantially advance the nation’s understanding of commercial-scale CO2 storage in deep saline aquifers. Voluminous and significant information was obtained from the drilling and the testing program of the subsurface, and sophisticated modeling was performed that held up to a wide range of scrutiny. All designs progressed to the point of securing construction contracts or comfort letters attesting to successful negotiation of all contract terms and willing execution at the appropriate time all major project elements – pipeline, surface facilities, and subsurface – as well as operations. While the physical installation of the planned facilities did not proceed in part due to insufficient time to complete the project prior to the expiration of federal funding, the project met significant objectives prior to DOE’s closeout decision. Had additional time been available, there were no known, insurmountable obstacles that would have precluded successful construction and operation of the project. Due to the suspension of the project, site restoration activities were developed and the work was accomplished. The site restoration

  7. Innovative project management techniques : major international pipeline project

    Energy Technology Data Exchange (ETDEWEB)

    Marshall, R.G.; Galatiuk, R.; Mensik, M. [TransCanada International, Calgary, AB (Canada)

    2000-07-01

    The project management techniques used to manage the challenges of constructing the Gasoducto del Pacifico Pipeline from Argentina to Chile was discussed. The 543 km natural gas pipeline relied on experience of the GasAndes Pipeline Project to execute it in one year, from October 1998 to October 1999. The project management team met with success by using innovative techniques designed specifically to the following challenges: (1) fast track nature of the project, (2) contractual obligations imposed by the project management agreement between GasPacifico and TransCanada International which had the responsibility for the right-of-way acquisition, applying for regulatory approvals, design and construction of the project, (3) environmental constraints of a route through a national park in Chile and areas of high erosion and instability through the imposing Andes mountain range, (4) seasonal constraints, (5) two countries with two sets of laws and strict regulatory requirements, and (6) procurement and importation of major equipment, materials and pipe. The initial capacity of the pipeline without the addition of compression facilities was 3.7 million cubic metres per day. Total investment was in the order of $321 million US. It was emphasized that the risk associated with meeting the projects goals were minimized by critically evaluating all prospective bidders on the project. 1 ref., 7 figs.

  8. 75 FR 13342 - Pipeline Safety: Workshop on Distribution Pipeline Construction

    Science.gov (United States)

    2010-03-19

    ... practices in natural gas distribution pipeline construction management and quality control. This workshop... St. Louis at the Ballpark, 1 South Broadway, St. Louis, MO 63102. Hotel reservations under the ``U.S...-845-7354. A daily base rate of $110.00 is available. The meeting room will be posted at the hotel on...

  9. Construction of Dongfang-Yangpu- Haikou Pipeline Starts in 2001

    Institute of Scientific and Technical Information of China (English)

    Xu Zhiwu

    2001-01-01

    @@ Based on the reports from the meeting to examine and appraise the basic engineering design for DongfangYangpu-Haikou gas transmission pipeline, construction of the pipeline that is a 490-million-yuan project for development of Dongfang Gas Field is scheduled to start in the first half of next year.It will be put into operation by August 2003. Currently, the preliminary engineering design has passed the appraisal.

  10. Tunnels: different construction methods and its use for pipelines installation

    Energy Technology Data Exchange (ETDEWEB)

    Mattos, Tales; Soares, Ana Cecilia; Assis, Slow de; Bolsonaro, Ralfo; Sanandres, Simon [Petroleo do Brasil S.A. (PETROBRAS), Rio de Janeiro, RJ (Brazil)

    2009-07-01

    In a continental dimensions country like Brazil, the pipeline modal faces the challenge of opening ROW's in the most different kind of soils with the most different geomorphology. To safely fulfill the pipeline construction demand, the ROW opening uses all techniques in earthworks and route definition and, where is necessary, no digging techniques like horizontal directional drilling, micro tunneling and also full size tunnels design for pipelines installation in high topography terrains to avoid geotechnical risks. PETROBRAS has already used the tunnel technique to cross higher terrains with great construction difficult, and mainly to make it pipeline maintenance and operation easier. For the GASBOL Project, in Aparados da Serra region and in GASYRG, in Bolivia, two tunnels were opened with approximately 700 meters and 2,000 meters each one. The GASBOL Project had the particularity of being a gallery with only one excavation face, finishing under the hill and from this point was drilled a vertical shaft was drilled until the top to install the pipeline section, while in GASYRG Project the tunnel had two excavation faces. Currently, two projects are under development with tunnels, one of then is the Caraguatatuba-Taubate gas pipeline (GASTAU), with a 5 km tunnel, with the same concepts of the GASBOL tunnel, with a gallery to be opened with the use of a TBM (Tunneling Boring Machine), and a shaft to the surface, and the gas pipeline Cabiunas-Reduc III (GASDUC III) project is under construction with a 3.7 km tunnel, like the GASYRG tunnel with two faces. This paper presents the main excavation tunneling methods, conventional and mechanized, presenting the most relevant characteristics from both and, in particular, the use of tunnels for pipelines installation. (author)

  11. Technical progress in pipeline design and construction

    Energy Technology Data Exchange (ETDEWEB)

    Hausken, K.B.

    1995-12-31

    This paper considers the technical progress in offshore pipeline construction with limitation to some general subjects covering pipeline design, installation and start-up. In future the use of limit state pipeline design philosophy, may be implemented as an alternative to the stress based design commonly used to day giving a potential for further optimisation of the pipeline design and consequently reduction of the initial investment. Comprehensive research and development efforts in Norway in the second half of the 1970`s, made it technically feasible to cross the deep water Norwegian Trench in the 1980`s. In addition, the development of several offshore pipeline systems until to day including gas distribution systems to the European continent, have brought Norway to the forefront of technical expertise

  12. Review of Oil and Gas Pipeline Construction in 2007

    Institute of Scientific and Technical Information of China (English)

    Qu Hong

    2008-01-01

    @@ China's pipeline industry has developed for 50 years till 2008. In the past 10 years, more than 50,000 kilometers of long-distance oil and gas pipelines have been constructed,of which gas pipelines reached about 30,000 kilometers,crude oil pipelines about 17,000 kilometers, and product oil pipelines about 7,000 kilometers. Oil and gas pipeline networks across regions have taken shape.

  13. Application of New Techniques, Materials and Technologies in West-East Gas Transportation Pipeline Project

    Institute of Scientific and Technical Information of China (English)

    DongXu

    2004-01-01

    With the application of new techniques, materials and technologies in West-East Gas Transportation Pipeline (WEGTP) project, the design concept of domestic pipeline industrial construction has been updated, speeding up the development and improvement of the strength as a whole in aspects of smelting industry, pipe fabrication, pipeline construction and equipment manufacture, making China's pipeline industry catch up with the trend of development of the world advanced level.

  14. Use of pipe saks on pipeline construction

    Energy Technology Data Exchange (ETDEWEB)

    Ghio, Alberto F.M.; Caciatori, Angelo [Galvao Engenharia S.A., Sao Paulo, SP (Brazil); Ruschi, Allan A.; Santos, Felipe A. dos; Barros, Horacio B. de; Loureiro, Regis R. [PETROBRAS S.A., Rio de Janeiro, RJ (Brazil)

    2009-07-01

    The use of new technologies applied to pipeline construction and assembling, aimed at enhancing productivity has been searched by PETROBRAS, throughout its subcontractors, assemblers, by transference in the mentioned constructions. Along the construction of Cacimbas Catu Pipeline, Spread 1 A, placed between the Cacimbas Gas Treatment Station (Linhares, ES) and the future Compression Station of Sao Mateus (ES), one, by means of surveys, noticed that the length of flooded or prone to flooding areas was way superior to the ones foreseen in the basic design. One of the broadly used methods for assuring buoyancy control is concreting the pipes. Such method deeply impacts work's logistics in for instance, the pipe stringing work; in this one, a maximum load of two pipes can be transported until the area to applied, what leads to lower productivity and higher risk due to the increase of trips by heavy load trucks. As an alternative to regular concrete, the Pipe Sak System was adopted and such method improved productivity and decreased discontinuities. (author)

  15. Fuel consumption impact on gas pipeline projects

    Energy Technology Data Exchange (ETDEWEB)

    Santos, Sidney P. [PETROBRAS S.A., Rio de Janeiro, RJ (Brazil); Kurz, Rainer; Lubomirsky, Matt [Solar Turbines, Inc., San Diego, CA (United States)

    2005-07-01

    An optimized gas pipeline design requires not only a qualified management of good engineering and planning, but also accurate estimates of capital investment and O and M. Compressor stations play a very important role on the success of a gas pipeline design and a careful selection of centrifugal compressors and drivers are key aspects for the success of the project. The state of the art design available nowadays for these kind of equipment provides overall high thermodynamic performance and consequently minimizes installed power requirements and energy usage with expressive savings on operating expenses along the economic life of the project. This paper will present a guideline for proper station design and selection of its turbo-compressors giving emphasis on the impact of fuel consumption on the economics of a gas pipeline project. (author)

  16. Potential effects of large linear pipeline construction on soil and vegetation in ecologically fragile regions.

    Science.gov (United States)

    Xiao, Jun; Wang, Ya-Feng; Shi, Peng; Yang, Lei; Chen, Li-Ding

    2014-11-01

    Long-distance pipeline construction results in marked human disturbance of the regional ecosystem and brings into question the safety of pipeline construction with respect to the environment. Thus, the direct environmental impact and proper handling of such large projects have received much attention. The potential environmental effects, however, have not been fully addressed, particularly for large linear pipeline projects, and the threshold of such effects is unclear. In this study, two typical eco-fragile areas in western China, where large linear construction projects have been conducted, were chosen as the case study areas. Soil quality indices (SQI) and vegetation indices (VI), representing the most important potential effects, were used to analyze the scope of the effect of large pipeline construction on the surrounding environment. These two indices in different buffer zones along the pipeline were compared against the background values. The analysis resulted in three main findings. First, pipeline construction continues to influence the nearby eco-environment even after a 4-year recovery period. During this period, the effect on vegetation due to pipeline construction reaches 300 m beyond the working area, and is much larger in distance than the effect on soil, which is mainly confined to within 30 m either side of the pipeline, indicating that vegetation is more sensitive than soil to this type of human disturbance. However, the effect may not reach beyond 500 m from the pipeline. Second, the scope of the effect in terms of distance on vegetation may also be determined by the frequency of disturbance and the intensity of the pipeline construction. The greater the number of pipelines in an area, the higher the construction intensity and the more frequent the disturbance. Frequent disturbance may expand the effect on vegetation on both sides of the pipeline, but not on soil quality. Third, the construction may eliminate the stable, resident plant

  17. Environmental Risk Assessment of Oilfield Pipeline Construction Project Based on Mutation Series Method%基于突变级数法的油田管输建设工程项目环境风险评价

    Institute of Scientific and Technical Information of China (English)

    胥卫平; 王秀英

    2012-01-01

    油田管道建设工程项目一般跨越空间范围较广,涉及的环境要素多,油品介质一旦发生泄漏其造成的环境污染后果是十分严重的,因此当前油田管道建设工程项目环境风险评价已成为国内外学术界所关注的一个热点。本文应用突变理论及突变级数评价法对自然环境因素、社会环境因素、交通环境因素三大要素进行分类,识别环境风险,确定风险等级,构建了管输建设环境风险评价驱动力因素指标体系以及管输建设环境风险评价突变模型。以陕北安塞——永坪管输工程项目为案例进行了实证研究,结合实测数据,得出影响管段风险重要度排序,指出其主要影响因素,提出相应的治理措施。%Oil pipeline construction projects across the spatial extent is wider than other generally. The environmental pollution will cause very serious consequences once the oil medium leaks out, so the current oil pipeline construction projects ERA has become a concern hot issue in international academic. In this paper the author classifies the three elements of the natural environment factors, social environ- mental factors, and traffic environment factors by the catastrophe theory and the catastrophe series evalua- tion in order to identify the environmental risk and determine the level of the risk and construct the driv- ing force factors index system of the pipeline construction ERA and the catastrophe model of the pipeline construction ERA. There is a case for empirical study though An' Sai -Yong Ping pipeline oil pipeline construction project. Finally, we can obtain the level sort that has affected the pipe risk by measured data to find the main factors, and then we can propose appropriate control measures.

  18. 78 FR 8389 - Natural Gas Pipelines; Project Cost and Annual Limits

    Science.gov (United States)

    2013-02-06

    ... Energy Regulatory Commission 18 CFR Part 157 Natural Gas Pipelines; Project Cost and Annual Limits AGENCY... publishes the project cost and annual limits for natural gas pipelines blanket construction certificates for each calendar year. DATES: This final rule is effective February 6, 2013 and establishes cost...

  19. 75 FR 8245 - Natural Gas Pipelines; Project Cost and Annual Limits

    Science.gov (United States)

    2010-02-24

    ... Energy Regulatory Commission 18 CFR Part 157 Natural Gas Pipelines; Project Cost and Annual Limits...) computes and publishes the project cost and annual limits for natural gas pipelines blanket construction... limits applicable from January 1, 2010 through December 31, 2010. FOR FURTHER INFORMATION...

  20. 76 FR 8293 - Natural Gas Pipelines; Project Cost and Annual Limits

    Science.gov (United States)

    2011-02-14

    ... Energy Regulatory Commission 18 CFR Part 157 Natural Gas Pipelines; Project Cost and Annual Limits...) computes and publishes the project cost and annual limits for natural gas pipelines blanket construction.... Applicability date: This final rule establishes cost limits applicable from January 1, 2011 through December...

  1. The Studies of the Welding Processes and Procedures on the West-East Pipeline Project

    Institute of Scientific and Technical Information of China (English)

    SuiYongli; HuangFuxiang; ZhaoHaihong; YinChanghua

    2004-01-01

    The West-East pipeline project attracted the attention from all over the world for its long distance, huge diameter, complex geographic conditions, and diversified welding techniques being applied. In this paper the detail welding process and procedures used in the project are discussed and the distinguished achievements on welding techniques of China pipeline construction are described.

  2. GasAndes pipeline construction moves to Chilean side

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-11-18

    Construction of Gasoducto GasAndes, the 287 mile, 24-in. gas pipeline from La Mora, Argentina, to Santiago, Chile, is well along in advance of its mid-1997 start-up target. By mid-September, all 194 miles of pipe in Argentina had been welded, lowered, and back filled, according to project manager NOVA Gas International Ltd., Calgary. On the Chilean side of the project at the end of September, 38% of the 93 miles of pipeline was complete. By October, crews had completed 28 of the 40 water crossings, including 8 of the 9 difficult crossings of the River Maipo. More than 70 miles of right-of-way have been graded, 35 miles ditched, 26 miles of pipe welded, and 17 miles lowered and backfilled. NOVA Gas International said construction is being carried out in areas with inclines as steep as 30--40{degree}. Approximately 600 people are working on the Chilean section of GasAndes. Meanwhile, engineers are working to complete route selection for the 68-mile GasAndes extension to Quillota in Region 5, 19 miles from Chile`s Pacific coast near Valparaiso.

  3. Comprehensive investigation into historical pipeline construction costs and engineering economic analysis of Alaska in-state gas pipeline

    Science.gov (United States)

    Rui, Zhenhua

    This study analyzes historical cost data of 412 pipelines and 220 compressor stations. On the basis of this analysis, the study also evaluates the feasibility of an Alaska in-state gas pipeline using Monte Carlo simulation techniques. Analysis of pipeline construction costs shows that component costs, shares of cost components, and learning rates for material and labor costs vary by diameter, length, volume, year, and location. Overall average learning rates for pipeline material and labor costs are 6.1% and 12.4%, respectively. Overall average cost shares for pipeline material, labor, miscellaneous, and right of way (ROW) are 31%, 40%, 23%, and 7%, respectively. Regression models are developed to estimate pipeline component costs for different lengths, cross-sectional areas, and locations. An analysis of inaccuracy in pipeline cost estimation demonstrates that the cost estimation of pipeline cost components is biased except for in the case of total costs. Overall overrun rates for pipeline material, labor, miscellaneous, ROW, and total costs are 4.9%, 22.4%, -0.9%, 9.1%, and 6.5%, respectively, and project size, capacity, diameter, location, and year of completion have different degrees of impacts on cost overruns of pipeline cost components. Analysis of compressor station costs shows that component costs, shares of cost components, and learning rates for material and labor costs vary in terms of capacity, year, and location. Average learning rates for compressor station material and labor costs are 12.1% and 7.48%, respectively. Overall average cost shares of material, labor, miscellaneous, and ROW are 50.6%, 27.2%, 21.5%, and 0.8%, respectively. Regression models are developed to estimate compressor station component costs in different capacities and locations. An investigation into inaccuracies in compressor station cost estimation demonstrates that the cost estimation for compressor stations is biased except for in the case of material costs. Overall average

  4. Pipeline cost reduction through effective project management and applied technology

    Energy Technology Data Exchange (ETDEWEB)

    Jenkins, A. [TransCanada Pipeline Ltd., Alberta (Canada); Babuk, T. [Empress International Inc., Westwood, NJ (United States); Mohitpour, M. [Tempsys Pipeline Solutions Inc., Vancouver, BC (Canada); Murray, M.A. [National Energy Board of Canada (Canada)

    2005-07-01

    Pipelines are regarded by many as passive structures with the technology involved in their construction and operation being viewed as relatively simple and stable. If such is the case how can there be much room for cost improvement? In reality, there have been many technological and regulatory innovations required within the pipeline industry to meet the challenges posed by ever increasing consumer demand for hydrocarbons, the effects of aging infrastructure and a need to control operating and maintenance expenditures. The importance of technology management, as a subset of overall project management, is a key element of life cycle cost control. Assurance of public safety and the integrity of the system are other key elements in ensuring a successful pipeline project. The essentials of best practise project management from an owner/ operator's perspective are set out in the paper. Particular attention is paid to the appropriate introduction of new technology, strategic procurement practice and material selection, indicating that capital cost savings of up to 15% are achievable without harming life cycle cost. The value of partnering leading to technical innovation, cost savings and improved profitability for all the participants is described. Partnering also helps avoid duplicated effort through the use of common tools for design, planning schedule tracking and reporting. Investing in appropriate technology development has been a major source of cost reduction in recent years and the impact of a number of these recently introduced technologies in the areas of materials, construction processes and operation and maintenance are discussed in the paper. (author)

  5. 陡坡溜管施工在西二线管道工程中的应用%Technique of steep slope pipe-slipping construction in the 2nd West-to-East Gas Pipeline Project

    Institute of Scientific and Technical Information of China (English)

    高志川; 刁凤东; 霸磊; 杨明

    2012-01-01

    The main process for the pipe-slipping construction method is as main pipe prefabrication and pipe end preparation, anticorrosion layer protection, pipe slipping construction, pipe connection on the slope top. This paper describes construction technology requirements, introduces quality requirements and safety protection measures for steep-slope pipe-slipping construction, and puts forward the following recommendations, including slope ratio experiments before trench excavation, measuring the depth of the trench and slope in a timely manner after beginning to excavate the trench, and determining practical safety measures for cross-operation. This method has been successfully applied in Bid Section 13B, 15B of eastern section in the 2nd West-to-East Gas Pipeline Project, and can be a reference for steep slope section construction for large-diameter long-distance pipelines.%溜管施工工艺主要包括降坡开挖、主管道预制与管端处理、防腐层保护、溜管施工、坡顶连头.阐述了各工艺的施工技术要求,介绍了施工的质量要求与安全保证措施,提出建议:管沟开挖前进行坡比试验,管沟开挖后及时测量管沟深度和坡度,并制定切实可行的交叉作业安全措施.该方法已成功应用于西气东输二线部分管段的施工,可为大口径长输管道工程陡坡段施工提供参考.

  6. Gas elephants: Arctic projects revived by expanding markets and pipelines

    Energy Technology Data Exchange (ETDEWEB)

    Jaremko, G.

    2000-01-03

    The revival of interest in Arctic natural gas and the developing competition to extend the pipeline grid to Alaska and the Yukon and the Northwest territories are the subject of this report. Substantial agreement between competing interest groups is reported with respect to the need for Arctic gas and the willingness of the market to pay for bringing it south to consumers. The discussion centers on the construction of the Alliance Pipeline Project that will reportedly bring two billion cubic feet per day of excess capacity to transport natural gas from northeastern British Columbia to Chicago, and the 2,400 km long Foothills Pipelines System that carries about one-third of Canadian gas exports to middle-western states and California. Plans are to extend the line to 5,240 km by laying pipe in a giant Y pattern between Prudhoe Bay and the Mackenzie delta in the north, and the start of the Foothills System at Caroline in central Alberta. The estimated cost of the line is about $US 6 billion, using a 36-inch diameter line at increased pressures in place of the 56-inch diameter pipe used in the 1970s. Construction plans are similar for the rest of the big Y, the Dempster Lateral beside the Dempster Highway between Whitehorse and Inuvik. A competing project, the Northern Gas Pipeline Project is also discussed. This line would run east of Prudhoe Bay under the Beaufort Sea to the Mackenzie Delta; then south along the Mackenzie Valley to Alberta. Cost of this line is also estimated at $US 6 billion, however, it would have a capacity of four billion cubic feet per day, including 2.5 billion cubic feet from Alaska and 1.5 billion cubic feet from Canada. Strong revival of interest is also reported from the supply side, with BP Amoco, ARCO, Chevron Canada Resources, Ranger 0il Ltd., Paramount Resources, Berkley Petroleum Corporation, Canadian Forest Oil, Alberta Energy Company, Petro-Canada, Anderson Resources, and Poco Petroleum Ltd., all showing interest to mount new

  7. Technical challenges of heavy wall HFW pipe production for Bord Gais Eireann pipeline project

    Energy Technology Data Exchange (ETDEWEB)

    O' Dwyer, Paul [Transmission Design Manager, Cork, (Ireland); Boothbym, Peter [MACAW Engineering Ltd., Newcastle, (United Kingdom); Tazedakis, Athanasios [Corinth Pipeworks S.A, Viotia, (Greece)

    2010-07-01

    This paper deals with the pipeline recently constructed by Bord Gais Eireann near the city of Cork in The Irish Republic. The 47.5 km pipeline comprises over 30 km of 9.5 mm and 17 km of 19.1 mm wall thickness for an outside diameter of 610 mm. This paper presents the global engineering approach adopted for the project and describes more in detail the specificities of the project and the challenges faced during production. One of the difficulties encountered was to manufacture a high strength pipeline of 19.1 mm wall thickness for HFW produced pipeline. The chemical composition of the 19.1 mm coil strip had also required new developments to accommodate the demanding drop weight tear test toughness requirement. Several methods were applied to mitigate potential risks such as increase of initial production test frequency, close monitoring during pipe production, identification of potential construction issues and the weldability performance were also tested.

  8. Web-based 3-D GIS and its applications for pipeline planning and construction

    Energy Technology Data Exchange (ETDEWEB)

    Tao, V.; Wang, T.Q.K. [Calgary Univ., Calgary, AB (Canada). Dept. of Geomatics Engineering

    2000-07-01

    The many benefits that web-based 3D geographical information system (GIS) technology can bring to pipeline planning and construction was discussed. GIS can effectively integrate and manage a variety of data sources including geological, geographical, environmental, engineering and socioeconomic data. The third dimension of geospatial data is also very significant for pipeline planning, construction and maintenance which explains the increased demand for the development of a 3D GIS for pipeline applications. The Internet has made it possible to integrate GIS, visualization and distributed object computing technologies for a web-based 3D GIS. While this offers many advantages, it also poses several technical challenges. The technology allows users to access, manipulate and analyze geospatial objects remotely. This has positive implications for pipeline operating companies in their collaborative decision making for large pipeline projects that cover large areas with multiple landowners and different government sections. The technology will enhance their capability and productivity by making it possible to run their operations more efficiently. The Department of Geomatics Engineering at the University of Calgary has developed a web-based 3D GIS, GeoEye 3D prototype using a pure Java solution. The system is based on an advanced client/server model for visualization, manipulation and analysis of spatial data such as 3D terrain, wells, linear objects such as roads or pipelines and solid objects such as buildings. The system can be linked to other databases for spatial inquiry. 7 refs., 3 figs.

  9. DETECTION OF UNAUTHORIZED CONSTRUCTION EQUIPMENT IN PIPELINE RIGHT-OF-WAYS

    Energy Technology Data Exchange (ETDEWEB)

    James E. Huebler

    2002-07-19

    Natural gas transmission companies mark the right-of-way areas where pipelines are buried with warning signs to prevent accidental third-party damage. Nevertheless, pipelines are sometimes damaged by third-party construction equipment. A single incident can be devastating, causing death and millions of dollars of property loss. This damage would be prevented if potentially hazardous construction equipment could be detected, identified, and an alert given before the pipeline was damaged. The Gas Technology Institute (GTI) is developing a system to solve this problem by using an optical fiber as a distributed sensor and interrogating the fiber with an custom optical time domain reflectometer. Key issues are the ability to detect encroachment and the ability to discriminate among potentially hazardous and benign encroachments. The work performed in the third quarter of the project (2nd quarter of 2002) includes design of the diode laser driver and high-speed detector electronics and programming of the custom optical time domain reflectometer.

  10. A review of deepwater pipeline construction in the U.S. Gulf of Mexico-Contracts, cost, and installation methods

    Science.gov (United States)

    Kaiser, Mark J.

    2016-09-01

    The offshore pipeline network in the U.S. Gulf of Mexico is the largest and most transparent system in the world. A review of deepwater projects in the region provides insight into construction cost and installation methods and the evolution of contract strategies. Pipeline projects are identified as export systems, infield flowline systems, and combined export and infield systems, and three dozen deepwater pipeline installations from 1980-2014 are described based on OTC/SPE industry publications and press release data. Export lines and infield flowlines are equally represented and many projects used a combination of J-lay, S-lay and reel methods with rigid steel, flexible line, and pipe-in-pipe systems. The average 2014 inflation-adjusted cost for pipeline projects based on OTC/SPE publications was 2.76 million/mi and ranged from 520 000/mi to 12.94 million/mi. High cost pipelines tend to be short segments or specialized pipeline. Excluding the two cost endpoints, the majority of projects ranged from 1 to 6 million/mi. The average inflation-adjusted cost to install deepwater pipelines in the U.S. Gulf of Mexico based on available public data is estimated at 3.1 million/mi.

  11. A Review of Deepwater Pipeline Construction in the U.S. Gulf of Mexico-Contracts, Cost, and Installation Methods

    Institute of Scientific and Technical Information of China (English)

    Mark J. Kaiser

    2016-01-01

    The offshore pipeline network in the U.S. Gulf of Mexico is the largest and most transparent system in the world. A review of deepwater projects in the region provides insight into construction cost and installation methods and the evolution of contract strategies. Pipeline projects are identified as export systems, infield flowline systems, and combined export and infield systems, and three dozen deepwater pipeline installations from 1980–2014 are described based on Offshore Technology Conference (OTC) and Society of Petroleum Engineers (SPE) industry publications and press release data. Export lines and infield flowlines are equally represented and many projects used a combination of J-lay, S-lay and reel methods with rigid steel, flexible line, and pipe-in-pipe systems. The average 2014 inflation-adjusted cost for pipeline projects based on OTC/SPE publications was$2.76 million/mi and ranged from$520 000/mi to$12.94 million/mi. High cost pipelines tend to be short segments or specialized pipeline. Excluding the two cost endpoints, the majority of projects ranged from $1 to $6 million/mi. The average inflation-adjusted cost to install deepwater pipelines in the U.S. Gulf of Mexico based on available public data is estimated at $3.1 million/mi.

  12. DETECTION OF UNAUTHORIZED CONSTRUCTION EQUIPMENT IN PIPELINE RIGHT-OF-WAYS

    Energy Technology Data Exchange (ETDEWEB)

    James E. Huebler

    2002-10-30

    Natural gas transmission companies mark the right-of-way areas where pipelines are buried with warning signs to prevent accidental third-party damage. Nevertheless, pipelines are sometimes damaged by third-party construction equipment. A single incident can be devastating, causing death and millions of dollars of property loss. This damage would be prevented if potentially hazardous construction equipment could be detected, identified, and an alert given before the pipeline was damaged. The Gas Technology Institute (GTI) is developing a system to solve this problem by using an optical fiber as a distributed sensor and interrogating the fiber with a custom optical time domain reflectometer. Key issues are the ability to detect encroachment and the ability to discriminate among potentially hazardous and benign encroachments. The work performed in the third quarter of the project (2nd quarter of 2002) includes design and construction of the diode laser driver and high-speed detector electronics. Fine-tuning of the electronics is proceeding. A new test site along an operating pipeline has been obtained.

  13. Tunnel construction used as solution for the Cabiunas-REDUC-3 gas pipeline

    Energy Technology Data Exchange (ETDEWEB)

    D' Oliveira, Celso A.; Teixeira, Andre N. [PETROBRAS S.A., Rio de Janeiro, RJ (Brazil)

    2009-12-19

    The construction of tunnels for pipeline routes has started being adopted as a solution for technical, environmental and safety issues in the oil and gas industry. Although it is not yet a common practice, PETROBRAS decided to use this type of construction on part of 178 extension kilometers of the main line for the Cabiunas-REDUC-3 Gas Pipeline located in the Gavioes mountains in the district of Cachoeiras de Macacu (RJ). The project implementation follows a growing trend of combining efficiency and environmental protection during its execution. Because the region is full of steep grades and is located in an environmentally sensitive area, the use of a tunnel connection removes some of the risks associated with that type of terrain. Among the many technical challenges involved in the project, one must include: access through dense forest, moving personnel, building material and equipment over step terrain and providing protection from corrosion. And as far as protecting the environment is concerned, the use of a pipeline results in a significant reduction in the loss of native vegetation and damage to the ecosystem. To increase these advantages, PETROBRAS seeks to adopt the kinds of construction methods that are most adequate for the challenge at hand, while producing the best results for the project. Whether using new or tried-and-true methods, the focus is always on perfecting the quality of service provided. (author)

  14. Foreign Cooperation Plays Important Role in West-East Pipeline Project

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    @@ West-to-East gas pipeline project is the largest project undertaken by PetroChina since the company issued IPO at international capital markets in 1999.Construction of West-East gas pipeline is of great strategic significance to secure PetroChina's leading position in the domestic natural gas market, turn the company's advantage in resources into benefits and make the natural gas business a new growth point for the company. Meanwhile, the project will benefit the economic development in China's western region,Xinjiang area in particular, improve the energy structure in the natural gas consuming regions and atmospheric environment in the areas along the pipeline and raise the general living standards.

  15. Zachary-Fort Lauderdale pipeline construction and conversion project: final supplement to final environmental impact statement. Docket No. CP74-192

    Energy Technology Data Exchange (ETDEWEB)

    None

    1980-05-01

    This Final Supplement to the Final Environmental Impact Statement (Final Supplement) evaluates the economic, engineering, and environmental aspects of newly developed alternatives to an abandonment/conversion project proposed by Florida Gas Transmission Company (Florida Gas). It also updates the staff's previous FEIS and studies revisions to the original proposal. Wherever possible, the staff has adopted portions of its previous FEIS in lieu of reprinting portions of that analysis which require no change. 60 references, 8 figures, 35 tables.

  16. Building ground analyses and expert opinions in district heating pipeline construction. Geotechnical investigations according to DIN 4020; Baugrunduntersuchungen und Baugrundgutachten im Fernwaermeleitungsbau. Geotechnische Untersuchungen nach DIN 4020

    Energy Technology Data Exchange (ETDEWEB)

    Weidlich, Ingo [AGFW Energieeffizienzverband fuer Waerme, Kaelte und KWK e.V., Frankfurt am Main (Germany)

    2010-12-15

    During construction of district heating pipelines, the specifications of the pertinent technical rules must be observed in order to ensure regular construction and to prevent damage. In principle, analyses of the building ground are required depending on the construction project and the pertinent DIN standards. The author lists the standards that are relevant for geotechnical operation, makes an evaluation of these standards, and explains their relevance in the construction of district heating pipelines. (orig.)

  17. FutureGen 2.0 Pipeline and Regional Carbon Capture Storage Project - Final Report

    Energy Technology Data Exchange (ETDEWEB)

    Burger, Chris [Patrick Engineering Inc., Lisle, IL (United States); Wortman, David [Patrick Engineering Inc., Lisle, IL (United States); Brown, Chris [Battelle Memorial Inst., Richland, WA (United States); Hassan, Syed [Gulf Interstate Engineering, Houston, TX (United States); Humphreys, Ken [Futuregen Industrial Alliance, Inc., Washington, D.C. (United States); Willford, Mark [Futuregen Industrial Alliance, Inc., Washington, D.C. (United States)

    2016-03-31

    The U.S. Department of Energy’s (DOE) FutureGen 2.0 Program involves two projects: (1) the Oxy-Combustion Power Plant Project and (2) the CO2 Pipeline and Storage Project. This Final Technical Report is focused on the CO2 Pipeline and Storage Project. The FutureGen 2.0 CO2 Pipeline and Storage Project evolved from an initial siting and project definition effort in Phase I, into the Phase II activity consisting permitting, design development, the acquisition of land rights, facility design, and licensing and regulatory approvals. Phase II also progressed into construction packaging, construction procurement, and targeted early preparatory activities in the field. The CO2 Pipeline and Storage Project accomplishments were significant, and in some cases unprecedented. The engineering, permitting, legal, stakeholder, and commercial learnings substantially advance the nation’s understanding of commercial-scale CO2 storage in deep saline aquifers. Voluminous and significant information was obtained from the drilling and the testing program of the subsurface, and sophisticated modeling was performed that held up to a wide range of scrutiny. All designs progressed to the point of securing construction contracts or comfort letters attesting to successful negotiation of all contract terms and willing execution at the appropriate time all major project elements – pipeline, surface facilities, and subsurface – as well as operations. While the physical installation of the planned facilities did not proceed in part due to insufficient time to complete the project prior to the expiration of federal funding, the project met significant objectives prior to DOE’s closeout decision. Had additional time been available, there were no known, insurmountable obstacles that would have precluded successful construction and operation of the project. Due to the suspension of the project, site restoration activities were developed and the work was accomplished. The site restoration

  18. Deep water construction on live oil and gas pipelines using the SmartPlug high-pressure pipeline isolation tools

    Energy Technology Data Exchange (ETDEWEB)

    Parrott, Ralph; Tveit, Edd; Sauthier, Daniel [PSI, Vancouver, BC (Canada)

    2005-07-01

    The world first successful SmartPlug operation took place at the Dimlington process plant in UK in 1999. Since 1999, the SmartPlug system has been deployed on more than 80 projects worldwide allowing the operators to perform pipeline repair work, modifications, or tie-ins with the pipeline systems full of product, and at full production pressure. Mid-line applications of the SmartPlug system allows the operator to tie a new pipeline into an existing pipeline without displacing the oil or gas and eliminates time needed to flare, depressurize, empty the line and commission the line before start up. The first SmartPlug installations were done to isolate pig trap valves or ESD valve from the pipeline allowing the valve to be replaced at full pipeline pressure, and in some instances while production was flowing. Some pipelines have multiple platforms or fields tied in along the pipeline, and the SmartPlug system is frequently used to isolate a single platform to allow platform removal or riser repair without impacting the production flow in the remaining part of the pipeline system. (author)

  19. Efficiency of wave impeding barrier in pipeline construction under earthquake excitation using nonlinear finite element analysis

    Indian Academy of Sciences (India)

    Fatih Goktepe; H Serdar Kuyuk; Erkan Celebi

    2014-04-01

    Earthquakes have caused colossal casualties and severe damages to engineering structures and especially leading to substantial economic loss to the underground structures and/or infrastructures. Pipelines are one of most important component of lifeline engineering. For instance, the Southern Caucasus- Eastern Turkey energy corridors are formed by several key pipelines carrying crude oil and natural gas from Azerbaijan, via Georgia, to world markets through Mediterranean Sea. Many project accomplished recently and construction of new corridors are still going on. They should be protected from earthquake disaster especially when they pass through high seismicity zones. The installation of wave impeding barriers (WIB) below the vulnerable infrastructures as pipelines established in soft soil can be used to reduce the effect of the earthquake induced ground borne vibrations. In this paper, a WIB as artificial bedrock based on the cut-off frequency of a soil layer over bedrock is proposed as isolation measurement in order to mitigate the dynamic response of the buried pipelines under earthquake strong ground motion. The computational simulation of the wave propagation problem is directly achieved by employing nonlinear 2D finite element modelling for prediction of screening performance of WIB on the dynamic response of vibrating coupled soil-pipeline system. Energy absorbing boundaries along the truncated interfaces of the unbounded nature of the underlying soil media are implemented in the time domain along with Newmark’s integration. An extensive parametric investigation and systematic computations are performed with different controlling parameters. The obtained numerical results point out that WIB can be very promising as an isolator to protect pipelines when they establish for a certain depth.

  20. 77 FR 56835 - Constitution Pipeline Company, LLC; Notice of Intent To Prepare an Environmental Impact Statement...

    Science.gov (United States)

    2012-09-14

    ... Energy Regulatory Commission Constitution Pipeline Company, LLC; Notice of Intent To Prepare an Environmental Impact Statement for the Planned Constitution Pipeline Project, Request for Comments on... environmental impacts of the proposed Constitution Pipeline Project (Project) involving construction...

  1. Derivative pipelines in the power plant construction. Fiberglass and steel in cooperation; Triebwasserleitungen im Kraftwerksbau. GFK und Stahl in Teamarbeit

    Energy Technology Data Exchange (ETDEWEB)

    Bissinger, Karl

    2010-07-01

    Nowhere, higher technical demands on water pipelines under pressure are met at the construction of hydroelectric power plants. In practice, increasingly optimized combinations of the materials fiberglass and steel have been proven. Particular experiences with the implementation of these concepts have been made in Austria and Switzerland. Under this aspect, the author of the contribution under consideration reports on recent projects from the Alps.

  2. The minimal preprocessing pipelines for the Human Connectome Project.

    Science.gov (United States)

    Glasser, Matthew F; Sotiropoulos, Stamatios N; Wilson, J Anthony; Coalson, Timothy S; Fischl, Bruce; Andersson, Jesper L; Xu, Junqian; Jbabdi, Saad; Webster, Matthew; Polimeni, Jonathan R; Van Essen, David C; Jenkinson, Mark

    2013-10-15

    The Human Connectome Project (HCP) faces the challenging task of bringing multiple magnetic resonance imaging (MRI) modalities together in a common automated preprocessing framework across a large cohort of subjects. The MRI data acquired by the HCP differ in many ways from data acquired on conventional 3 Tesla scanners and often require newly developed preprocessing methods. We describe the minimal preprocessing pipelines for structural, functional, and diffusion MRI that were developed by the HCP to accomplish many low level tasks, including spatial artifact/distortion removal, surface generation, cross-modal registration, and alignment to standard space. These pipelines are specially designed to capitalize on the high quality data offered by the HCP. The final standard space makes use of a recently introduced CIFTI file format and the associated grayordinate spatial coordinate system. This allows for combined cortical surface and subcortical volume analyses while reducing the storage and processing requirements for high spatial and temporal resolution data. Here, we provide the minimum image acquisition requirements for the HCP minimal preprocessing pipelines and additional advice for investigators interested in replicating the HCP's acquisition protocols or using these pipelines. Finally, we discuss some potential future improvements to the pipelines.

  3. Explosive welding combines with bottom-tow for new subsea pipeline construction technique

    Energy Technology Data Exchange (ETDEWEB)

    Redshaw, P.R.; Stalker, A.W.

    1979-01-01

    The bottom-tow technique for installing pipe strings on the seabed and the explosive welding tie-in method complement each other to provide a technically and economically attractive pipeline construction method applicable over a wide range of water depths and weather conditions, including marginal cases where other pipelaying methods would not normally be justified. By using the bottom-tow method, pipe strings up to 20 km long can be transported at an optimum towing speed of about 5 knots and positioned within 1.8 m of the specified tow route. Both techniques can be operated from a single, nonspecialized surface vessel in a variety of projects. By using the bottom-tow/explosive welding method, savings of at least 50% can be achieved, compared with conventional lay-barge techniques, particularly for 10 mi or longer pipelines.

  4. Welding technique studies on the "West-East" pipeline project

    Institute of Scientific and Technical Information of China (English)

    Sui Yongli; Du Zeyu; Huang Fuxiang; Qi Lichun

    2006-01-01

    This paper described the work of welding process design for the "West-East" pipeline project, which is high pressure, large diameter and heavy wall thickness. According to the different geographical situation, climate, culture and the flexibility of the welding methods, this work recommended the semi-automatic process at the east and middle sections and automatic process at the west section of the pipeline project. The manual process is recommended on the tie-in joints and repairs. The double joint pipe and the 3 joint pipe are recommended at the water net place and some in-ditch welding place to reduce the welding volume. Also the special redesigned bevels are recommended for the automatic process and the semiautomatic process. Through all destructive tests, the results shows the welds are meet the requirements of related standards,specifications and design documents.

  5. Water quality regulation during construction of the trans-Alaska oil pipeline system

    Energy Technology Data Exchange (ETDEWEB)

    Zemansky, G.M.

    1983-01-01

    The trans-Alaska oil pipeline system (TAPS) was constructed by a consortium including some of the largest oil companies in the world. They had a strong economic incentive in rapid construction of the project, perceiving delay as equivalent to loss of large amounts of profit. State and federal governments had similarly compelling economic, political, and policy reasons to adopt this objective of the oil companies as their own. This dissertation is a retrospective assessment of water quality regulation during construction of the TAPS project (1974 through mid-1977). Its theoretical framework involves the degree to which regulatory redundancy (overlap) produced reliability in achieving compliance with water pollution control requirements. It was found during this research that noncompliance was widespread, frequent, and of a magnitude which was often large. The root cause of this unnecessary noncompliance was the overriding economic interest of the pipeline builders in rapid construction coupled with the failure of regulatory agencies to enforce. There was a greater appearance of regulatory redundancy than was actually the case. The same economic, political, and policy reasons that had led to TAPS project authorization and bureaucratic dynamics resulted in enforcement failure with regard to water pollution control requirements. Under a mandate to facilitate rapid construction, the regulatory agencies demonstrated an inability to accomplish any other objective at the same time. Common-mode failure largely defeated the beneficial potential of what limited regulatory redundancy there was. Additionally, meaningful public participation was prevented by lack of resources, lack of procedural opportunity, and resistance to it from industry and government. The dissertation is concluded with recommendations for improving regulatory performance through strengthened redundancy mechanisms.

  6. Application of pre-stressed technology in the crossing construction of the China–Myanmar Gas Pipeline

    Directory of Open Access Journals (Sweden)

    Xuejun Wang

    2015-01-01

    Full Text Available Concrete structure is commonly used in the anchorages of a large cable-suspended pipeline crossing construction. With the increase of span and load, the stress on the concrete anchorages may rise rapidly. In case of traditional anchoring structure fixed by anchor rods, concrete cracking will occur, thereby reducing the anchorage life. To solve this problem, the pre-stressed structure was designed to effectively improve the efficiency of anchoring and reduce engineering cost. In the crossing construction of China–Myanmar Gas Pipeline, the pre-stressed technology was used to establish an effective pre-stressed anchoring system, which integrates the pre-stressed structures (e.g. tunnel anchorages in the anchors and the optimization measures (e.g. positioning mode, anchorage structure, concrete placement, pre-stressed, and medium injection, in line with the crossing structure and load features of this project. The system can delay the occurrence of concrete cracking and enhance the stress durability of the structure and anchoring efficiency. This technology has been successfully applied in the crossing construction of China–Myanmar Gas Pipeline, with good economic and social benefits, indicating that this technology is a new effective solution to the optimization of suspended pipeline anchorage structures, providing technical support for the development of pipeline crossing structure.

  7. China-Russia Oil Pipeline Comes under Construction

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    @@ The long-awaited oil pipeline linking Russia's far east to China's northeast is set to start operation by the end of 2010, Zhou Jiping, Vice President of ChinaNational Petroleum Corporation (CNPC) confirmed in Beijing at a conference in late April. The pipeline runs from Skovorodino, Russia to China's northeastern city of Daqing.

  8. Xinjiang Dushanzi Project Started Construction Started Construction

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    @@ Xinjiang Dushanzi petroleum refining and chemical integrated project,is the largest one so far in China, with a capacity of ten-million-ton petroleum refinery and onemillion-ton ethylene complex, directly under PetroChina Company Limited (PetroChina), was started construction along with laying a foundation on August 22, 2005.

  9. Simplification of executive procedures for construction and assembly of terrestrial gas pipelines through illustrations

    Energy Technology Data Exchange (ETDEWEB)

    Filho, Mario D.C.; Bresci, Claudio T.; Dantas, Augusto Cesar de C.; Machado, Clara C. Torres S. [PETROBRAS, Rio de Janeiro, RJ (Brazil); Sobreiro, Flavia L. [Telsan Engenharia, Belo Horizonte, MG (Brazil)

    2009-07-01

    This study aims to show a simple, efficient and fun method that seeks to minimize the weaknesses and help to increase the perception of risk analysis and systematization the operation discipline. This project uses the methodology of images illustrated in the executive procedures, and is based on the activities of construction and assembly, HSE and social communication in gas pipeline ventures, setting and maintaining access to practical information, yet are prepared a work instructions that summarize each process, as a form of material support in training. Among several objectives that have shaped the strategies for this project, the main is to provide the workforce engaged in the activities of field, greater facility in implementing the technical information contained in the procedures, from a wider and better understanding of the guidelines described in the documentation. (author)

  10. ANALYSIS OF DEPENDENCE BETWEEN CAPITAL EXPENDUTURES OF CONSTRUCTION WORKS AND GAS DISTRIBUTION PIPELINE DIAMETER

    Directory of Open Access Journals (Sweden)

    Tabunshchikov Yuriy Andreevich

    2012-10-01

    The research also contemplates the structure of expenses associated with the piping of gas distribution networks. Mathematical equations have been derived to perform sufficiently accurate calculations of costs of construction of various types and various lengths of gas pipelines.

  11. Social and Economic Benefits of the West-East Gas Pipeline Project

    Institute of Scientific and Technical Information of China (English)

    Li Xiangyang

    2002-01-01

    @@ On July 4 2002, a project attracting world attention, i.e., the West-East Gas Pipeline Project was declared in full-scale commencement. The project will write history with its enormous social and economic benefits.

  12. Geohazard assessment lifecycle for a natural gas pipeline project

    Science.gov (United States)

    Lekkakis, D.; Boone, M. D.; Strassburger, E.; Li, Z.; Duffy, W. P.

    2015-09-01

    This paper is a walkthrough of the geohazard risk assessment performed for the Front End Engineering Design (FEED) of a planned large-diameter natural gas pipeline, extending from Eastern Europe to Western Asia for a total length of approximately 1,850 km. The geohazards discussed herein include liquefaction-induced pipe buoyancy, cyclic softening, lateral spreading, slope instability, groundwater rise-induced pipe buoyancy, and karst. The geohazard risk assessment lifecycle was comprised of 4 stages: initially a desktop study was carried out to describe the geologic setting along the alignment and to conduct a preliminary assessment of the geohazards. The development of a comprehensive Digital Terrain Model topography and aerial photography data were fundamental in this process. Subsequently, field geohazard mapping was conducted with the deployment of 8 teams of geoprofessionals, to investigate the proposed major reroutes and delve into areas of poor or questionable data. During the third stage, a geotechnical subsurface site investigation was then executed based on the results of the above study and mapping efforts in order to obtain sufficient data tailored for risk quantification. Lastly, all gathered and processed information was overlain into a Geographical Information database towards a final determination of the critical reaches of the pipeline alignment. Input from Subject Matter Experts (SME) in the fields of landslides, karst and fluvial geomorphology was incorporated during the second and fourth stages of the assessment. Their experience in that particular geographical region was key to making appropriate decisions based on engineering judgment. As the design evolved through the above stages, the pipeline corridor was narrowed from a 2-km wide corridor, to a 500-m corridor and finally to a fixed alignment. Where the geohazard risk was high, rerouting of the pipeline was generally selected as a mitigation measure. In some cases of high uncertainty in

  13. Importance of effective contract management of GasPacifico Pipeline Project : a case study

    Energy Technology Data Exchange (ETDEWEB)

    Marshall, R.G.; Proctor, C. [GasPacifico Project (Argentina)

    2000-07-01

    This paper described the contracting challenges and bid evaluations for the GasPacifico Project which involved the construction of 543 km of NPS 20 and NPS 24 high pressure gas pipeline to connect natural gas reserves in the Province of Neuquen, Argentina to industrial and domestic markets in Concepcion, Chile. The line passes through difficult terrain in the Andes Mountain Range and Coastal Mountain Range. TransCanada International Ltd. (TCI) was responsible for the overall project management of the project from design, construction and contract administration. Call for bids on the project went out in March 1998 and contracts were awarded less than 5 months later in July 1998. TCI's objective was to ensure that the contractors had the experience, resources and financial ability to successfully complete the project. The work was divided into distinct contract packages on the basis of changes in pipe diameter, natural changes in topography, border between Argentina/Chile, and considerations related to the large number of landowners in agricultural and urban zones. Based on a review of pre-qualifications, 18 contractors were invited on a reconnaissance tour to familiarize the bidders with the project. When a review of the technical bids was completed, evaluation of the commercial bids began. When the difference in technical rating was very small, the lowest technically acceptable bidder was accepted. The project was constructed on schedule and under budget. It was noted that much of this success is a result of the contract selection process. 5 tabs., 3 figs.

  14. Detection of Unauthorized Construction Equipment in Pipeline Right-of-Ways

    Energy Technology Data Exchange (ETDEWEB)

    Maurice Givens; James E. Huebler

    2004-09-30

    The leading cause of incidents on transmission pipelines is damage by third-party construction equipment. A single incident can be devastating, causing death and millions of dollars of property loss. This damage would be prevented if potentially hazardous construction equipment could be detected, identified, and an alert given before the pipeline is hit. Currently there is no method for continuously monitoring a pipeline right-of-way. Instead, companies periodically walk or fly over the pipeline to find unauthorized construction activities. Gas Technology Institute (GTI) is developing a system to solve this problem by using an optical fiber buried above the pipeline as a distributed sensor. A custom optical time domain reflectometer (OTDR) is used to interrogate the fiber. Key issues in the development of this technology are the ability to detect encroachment and the ability to discriminate among potentially hazardous and benign encroachments. Advantages of the reflectometry technique are the ability to accurately pinpoint the location of the construction activity and the ability to separately monitor simultaneously occurring events. The basic concept of using OTDR with an optical fiber buried above the pipeline to detect encroachment of construction equipment into the right of way works. Sufficiently rapid time response is possible; permitting discrimination between encroachment types. Additional work is required to improve the system into a practical device.

  15. The challenge of managing environmental, health, safety and social (EHS and S) aspects of a short term pipeline construction project; El desafio del manejo ambiental, de la salud, de la seguridad y de aspectos sociales del proyecto de construccion a corto plazo de un gasoducto

    Energy Technology Data Exchange (ETDEWEB)

    Zuelta, Edgar A.; Cgavez, Rafael [Transierra S.A. (Bolivia)

    2003-07-01

    The TRANSIERRA pipeline construction project, a 432 Km, 32'' pipeline located in the southern part of Bolivia was ready to kick off, waiting for an Administrative Concession that would allow the project to proceed. The implementation of the EHS Management Plan and the Social Strategies Plan was designed to get the Environmental Permits for changes generated with the detailed engineering design, Clear Cutting License, and a Negotiated agreements with representatives of the 8 Indigenous People's Territories and 6 Municipalities a long the ROW. Any delays due to our failure in achieving the necessary permits would have had an impact in fulfilling the already challenging one year schedule and stand by costs. TRANSIERRA designed a strategy to approach each of the EHS and S aspects in order to meet deadlines, yet implementing a solid EHS and S management system. The necessary resources were deployed to ensure compliance at all levels. The reforestation process required of 35 native species. There were neither seeds nor most of the plants available to complete this task. In addition no data was available on seed processing to successfully grow the number of required individuals; therefore TRANSIERRA developed and implemented a program to reach the reforestation objective. (author)

  16. 77 FR 8724 - Natural Gas Pipelines; Project Cost and Annual Limits

    Science.gov (United States)

    2012-02-15

    ... Energy Regulatory Commission 18 CFR Part 157 Natural Gas Pipelines; Project Cost and Annual Limits... (OEP) computes and publishes the project cost and annual limits for natural gas pipelines blanket... establishes cost limits applicable from January 1, 2012 through December 31, 2012. FOR FURTHER...

  17. The construction key points of city pipeline engineering%城市管道工程施工要点

    Institute of Scientific and Technical Information of China (English)

    程文海

    2012-01-01

    Combining with the working practice,this paper summarized the construction key points of city pipeline project,including the trench excavation,pipe installation,pipe anti-corrosion insulation,pipe functional test and backfilling etc.,provided reference for a variety of pipeline construction.%结合工作实践,综述了城市管道工程的施工要点,包括沟槽开挖、管道安装、管道防腐保温、管道功能性试验及回填等,为城市各种管道工程施工提供参考与借鉴。

  18. Pydpiper: A Flexible Toolkit for Constructing Novel Registration Pipelines

    Directory of Open Access Journals (Sweden)

    Miriam eFriedel

    2014-07-01

    Full Text Available Using neuroimaging technologies to elucidate the relationship between genotype and phenotype and brain and behavior will be a key contribution to biomedical research in the twenty-first century. Among the many methods for analyzing neuroimaging data, image registration deserves particular attention due to its wide range of applications. Finding strategies to register together many images and analyze the differences between them can be a challenge, particularly given that different experimental designs require different registration strategies. Moreover, writing software that can handle different types of image registration pipelines in a flexible, reusable and extensible way can be challenging. In response to this challenge, we have created Pydpiper, a neuroimaging registration toolkit written in Python. Pydpiper is an open-source, freely available pipeline framework that provides multiple modules for various image registration applications. Pydpiper offers five key innovations. Specifically: (1 a robust file handling class that allows access to outputs from all stages of registration at any point in the pipeline; (2 the ability of the framework to eliminate duplicate stages; (3 reusable, easy to subclass modules; (4 a development toolkit written for non-developers; (5 four complete applications that run complex image registration pipelines ``out-of-the-box.'' In this paper, we will discuss both the general Pydpiper framework and the various ways in which component modules can be pieced together to easily create new registration pipelines. This will include a discussion of the core principles motivating code development and a comparison of Pydpiper with other available toolkits. We also provide a comprehensive, line-by-line example to orient users with limited programming knowledge and highlight some of the most useful features of Pydpiper. In addition, we will present the four current applications of the code.

  19. Marine Environmental Protection and Transboundary Pipeline Projects: A Case Study of the Nord Stream Pipeline

    NARCIS (Netherlands)

    Lott, Alexander

    2011-01-01

    The Nord Stream transboundary submarine pipeline, significant for its impact on the EU energy policy, has been a heav- ily debated issue in the Baltic Sea region during the past decade. This is partly due to the concerns over the effects that the pipeline might have on the Baltic Sea as a particular

  20. Pydpiper: a flexible toolkit for constructing novel registration pipelines

    Science.gov (United States)

    Friedel, Miriam; van Eede, Matthijs C.; Pipitone, Jon; Chakravarty, M. Mallar; Lerch, Jason P.

    2014-01-01

    Using neuroimaging technologies to elucidate the relationship between genotype and phenotype and brain and behavior will be a key contribution to biomedical research in the twenty-first century. Among the many methods for analyzing neuroimaging data, image registration deserves particular attention due to its wide range of applications. Finding strategies to register together many images and analyze the differences between them can be a challenge, particularly given that different experimental designs require different registration strategies. Moreover, writing software that can handle different types of image registration pipelines in a flexible, reusable and extensible way can be challenging. In response to this challenge, we have created Pydpiper, a neuroimaging registration toolkit written in Python. Pydpiper is an open-source, freely available software package that provides multiple modules for various image registration applications. Pydpiper offers five key innovations. Specifically: (1) a robust file handling class that allows access to outputs from all stages of registration at any point in the pipeline; (2) the ability of the framework to eliminate duplicate stages; (3) reusable, easy to subclass modules; (4) a development toolkit written for non-developers; (5) four complete applications that run complex image registration pipelines “out-of-the-box.” In this paper, we will discuss both the general Pydpiper framework and the various ways in which component modules can be pieced together to easily create new registration pipelines. This will include a discussion of the core principles motivating code development and a comparison of Pydpiper with other available toolkits. We also provide a comprehensive, line-by-line example to orient users with limited programming knowledge and highlight some of the most useful features of Pydpiper. In addition, we will present the four current applications of the code. PMID:25126069

  1. The effects of pipeline construction disturbance on soil properties and restoration cycle.

    Science.gov (United States)

    Shi, Peng; Xiao, Jun; Wang, Ya-Feng; Chen, Li-Ding

    2014-03-01

    Disturbance to the physical-chemical properties of soil caused by pipeline installation was evaluated using two soil quality indices to identify the scale of disturbance and the restoration cycle. The integrated soil quality index (SQI) was used to evaluate soil property changes in different pipeline zones (0, 10, 20, and 50 m from the pipeline) at sites 1 and 2. The soil restoration index (SRI) was used to estimate soil recovery from three pipelines with different recovery periods (2, 6, and 8 years) at site 3. The results showed that the adverse effects of pipeline construction on soil properties mainly occurred in the right-of-way (ROW) areas and the impaired zones were in the order trench > piling and working areas > 20 and 50 m. The soil restoration cycle may be complete within 6 years of construction. At site 3, the SRI in the ROW area of a pipeline after 6 years of restoration was close to 100 %, showing full soil recovery. However, the SRI in the disturbed areas of a pipeline after 2 years of restoration was much lower than that after 6 years of restoration, indicating that the soil was still recovering from the disturbance. The topography may change the intensity of disturbance in different areas due to the movement patterns of heavy machinery and traffic routes. There were local variations in the SQI within the pipeline zones, with flat areas suffering greater disturbance than hilly areas, indicating that topography should be considered in a pipeline's environmental impact assessment.

  2. Seismic behavior of buried pipelines constructed by design criteria and construction specifications of both Korea and the US

    Directory of Open Access Journals (Sweden)

    S.-S. Jeon

    2013-09-01

    Full Text Available Earthquake loss estimation systems in the US, for example HAZUS (Hazard in US, have been established based on sufficient damage records for the purpose of prevention and efficient response to earthquake hazards; however, in Korea, insufficient data sets of earthquakes and damage records are currently available. In this study, the earthquake damages to pipelines in Korea using the pipeline repair rate (RR recommended in HAZUS was reevaluated with the degree of confidence when RR is used without modification for the damage estimation of pipelines in Korea. The numerical analyses using a commercial finite element model, ABAQUS, were carried out to compare stresses and strains mobilized in both brittle and ductile pipelines constructed by the design criteria and construction specifications of both Korea and the US. These pipelines were embedded in dense sand overlying three different in situ soils (clay, sand, and gravel subjected to earthquake excitations with peak ground accelerations (PGAs of 0.2 to 1.2 g and 1994 Northridge and 1999 Chi-Chi earthquake loadings. The numerical results show that differences in the stress and strain rates are less than 10%. This implies that RR in HAZUS can be used for earthquake damage estimation of pipelines with a 90% confidence level in Korea.

  3. The organizational learning in the search of the environmental and social sustainability: an applied Brazilian experience in a project of constructions of gas-pipeline in the Amazon Forest; A aprendizagem organizacional na busca da sustentabilidade ambiental e social: uma experiencia brasileira aplicada em um projeto de construcao de gasoduto na Floresta Amazonica

    Energy Technology Data Exchange (ETDEWEB)

    Mannarino, Ronaldo P. [PETROBRAS, Rio de Janeiro, RJ (Brazil)

    2008-07-01

    The experience of PETROBRAS's performance, when the implantation of the province of Urucu, in the City of Coari, state of Amazon, was constructed on empirical bases and it had as a support landmark the lines of direction dictated in 1988 for famous scientists who acted directly in the Amazon Region. The application of these lines of direction gave support to the implantation of essential activities, such as a fishery of changes, the recovery of sanded small rivers, prevention of spills and the opening of chances for research in that further and little known basin of the Urucu River. The convergence was that PETROBRAS made use of the logistic that the scientists needed; and they made use of the knowledge that the company needed. It was just necessary to adjust the language. The results had been very effective and the province of Urucu became the pioneer and the most expressive unit in environmental management in PETROBRAS. In 1999 the Project PIATAM was implanted: Potential Impacts and Risks of the Transport of Oil and Gas in Amazon, taking care of demands of the future transport of the natural gas to Manaus for gas-pipeline, that became possible in 2003 thanks to the support of the research, whose results had fully taken care of the demands of the environmental licensing of the workmanship. The current work synthesizes the bases of knowledge and the results gotten with the application of these bases in a project of construction of a gas-pipeline of 652 kilometers in full Amazonian forest. In the construction phase, one more time the integration with the scientific community was essential to guarantee the application of the concepts of environment in the workmanship of the Gas-pipeline Urucu - Manaus, with advising of teams from the INPA, like Limnology and of combat the tropical illnesses, as the malaria. Another point of support was the partnership with the Secretariat of Sustainable Development of Amazon in an Accord of application of resources, in 135

  4. STATUS AND PROSPECT OF OIL AND GAS PIPELINES IN CHINA

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    @@ With the exploration and development of natural gas and the increase of crude oil import, the industry of China's Oil and Gas Pipelines has witnessed rapid development. Especially the gas pipeline industry is entering a peak period of development. Thanks to the completion and operation of large-scale pipeline projects including West-East Gas Transportation Pipeline project,Shanxi-Beijing Gas Pipeline Ⅱ, Ji-Ning Pipeline,Huaiyang-Wuhan Pipeline, Guangdong LNG Pipeline,Western Pipeline and Pearl River Delta Oil Product Pipeline, many trans-regional gas and oil pipeline networks with initial scale have been gradually established and improved in China. Meanwhile, the metallurgy,manufacturing and construction level of pipelines has been greatly developed, achieving world top level. The next five years is still a peak period of development for China's gas and oil pipeline industry which will enjoy a broader prospect.

  5. Project for environmental recovery of the Taquari stream in the surroundings of OSBRA Pipeline; Projeto de recuperacao ambiental do corrego Taquari no entorno do duto OSBRA

    Energy Technology Data Exchange (ETDEWEB)

    Torres, Carlos A.R.; Maia, Jacob S.; Magalhaes, Milton P.; Nunes, Roberta V. [PETROBRAS Transporte S. A. (TRANSPETRO), Rio de Janeiro, RJ (Brazil); Camargo, Renato F. [R. Camargo Ambiental, Americana, SP (Brazil); Ruas, Tereza C.B.G. [Secretaria de Agricultura e Abastecimento, Sao Paulo, SP (Brazil). Coordenadoria de Assistencia Tecnica Integral (CATI)

    2008-07-01

    This paper presents the experience of PETROBRAS Transporte S. A. - TRANSPETRO the Project of Environmental Recovery of Taquari Stream (which runs close to Osbra pipeline) to the end of reducing the effect of flooding of the areas adjoining the water body. The discussion encompasses the following themes: pipeline interference with water bodies during construction; relationship with stakeholders; impact of agricultural activities on water bodies; conflicts upon establishment of legal reserves and protection of Permanent Preservation Areas. (author)

  6. Logistics at the Amazon forest: the challenge of Urucu-Manaus pipeline construction

    Energy Technology Data Exchange (ETDEWEB)

    Freitas, Ricardo Magalhaes; Araujo, Jorge Marques de; Barbosa, Gilberto Rodrigues; Campos, Marcos Zeferino Teixeira [Petroleo Brasileiro S.A. (PETROBRAS), Rio de Janeiro, RJ (Brazil)

    2009-07-01

    The predominant difficulties and logistics complexities at the Amazon Region, required of the technical body responsible for the construction of the Undertaking Urucu-Manaus Pipeline, technological knowledge and a profound background of the regional particularities, qualities that were determinants for the execution of this significant work. The logistics solutions, supported on an accurate and adequate planning for people, equipment and material mobilization for several front services, were planned considering the constant climatic variables, river flood and dry periods and with the monitoring daily routines of the communities located around the pipeline construction influence area. (author)

  7. Ecological effects of pipeline construction through deciduous forested wetlands, Midland County, Michigan

    Energy Technology Data Exchange (ETDEWEB)

    Zellmer, S.D. (Argonne National Lab., IL (United States)); Rastorfer, J.R. (Chicago State Univ., IL (United States). Dept. of Biological Sciences ANL/CSU Cooperative Herbarium, Chicago, IL (United States)); Van Dyke, G.D. (Trinity Christian Coll., Palos Heights, IL (United States). Dept. of Biology)

    1991-07-01

    Implementation of recent federal and state regulations promulgated to protect wetlands makes information on effects of gas pipeline rights-of-way (ROWs) in wetlands essential to the gas pipeline industry. This study is designed to record vegetational changes induced by the construction of a large-diameter gas pipeline through deciduous forested wetlands. Two second-growth forested wetland sites mapped as Lenawee soils, one mature and one subjected to recent selective logging, were selected in Midland County, Michigan. Changes in the adjacent forest and successional development on the ROW are being documented. Cover-class estimates are being made for understory and ROW plant species using 1 {times}1-m quadrats. Counts are also being made for all woody species with stems < 2 cm in diameter at breast height (dbh) in the same plots used for cover-class estimates. Individual stem diameters and species counts are being recorded for all woody understory and overstory plants with stems {ge}2 cm dbh in 10 {times} 10-m plots. Although analyses of the data have not been completed, preliminary analyses indicate that some destruction of vegetation at the ROW forest edge may have been avoidable during pipeline construction. Rapid regrowth of many native wetland plant species on the ROW occurred because remnants of native vegetation and soil-bearing propagules of existing species survived on the ROW after pipeline construction and seeding operations. 91 refs., 11 figs., 3 tabs.

  8. DETECTION OF UNAUTHORIZED CONSTRUCTION EQUIPMENT IN PIPELINE RIGHT-OF-WAYS

    Energy Technology Data Exchange (ETDEWEB)

    James E. Huebler

    2003-04-17

    Natural gas transmission companies mark the right-of-way areas where pipelines are buried with warning signs to prevent accidental third-party damage. Nevertheless, pipelines are sometimes damaged by third-party construction equipment. A single incident can be devastating, causing death and millions of dollars of property loss. This damage would be prevented if potentially hazardous construction equipment could be detected, identified, and an alert given before the pipeline was damaged. The Gas Technology Institute (GTI) is developing a system to solve this problem by using an optical fiber as a distributed sensor and interrogating the fiber with a custom optical time domain reflectometer. Key issues are the ability to detect encroachment and the ability to discriminate among potentially hazardous and benign encroachments. The work performed in the 1st quarter of 2003 included fine-tuning and debugging of the custom Optical Time Domain Reflectometer being constructed for data collection and analysis. The detector was redesigned reducing the noise floor by over a factor of ten. While GTI's OTDR was being improved, a new, commercial OTDR was used to verify that the technique is capable of measuring one pound continuous force applied to the Hergalite. Optical fibers were installed at the ANR Pipeline test site along an operating pipeline.

  9. Cost reducing factors in effective pipeline piling structure design and construction in Alberta's thermal SAGD gathering pipeline systems

    Energy Technology Data Exchange (ETDEWEB)

    Farrokhzad, M.A. [IMV Projects, Calgary, AB (Canada)

    2008-10-15

    Oil sands steam assisted gravity drainage (SAGD) gathering pipeline systems are typically arranged so that above-ground steam pipeline and production pipelines lay next to each other on the same steel structure. Longitudinal and lateral loads build up in the pipeline supports, and the loads are consistently changing until pipeline temperatures reach a steady state condition. SAGD pipelines are required to have enough flexibility to absorb thermal expansion or contraction movements. However, most pipeline engineers only consider upper and lower temperature limits in the design of steel structures and pilings. This paper examined the effect of considering both the thermal gradient and time factor in designing supports for pipelines. The study examined how the factors impacted on standard load calculations and pile sizings. Sixteen stress analysis models for steam and production lines were prepared and designated thermal gradients were introduced to each model. Longitudinal and lateral loads caused by thermal gradient movements were calculated for all supports. The models were analyzed and absolute values for longitudinal and lateral loads were recorded. Results of the study showed that engineers do not necessarily need to rely on maximum temperatures as the condition that results in maximum longitudinal and lateral loads on supports. It was concluded that costs related to pipeline construction can be significantly reduced by considering the effects of thermal gradients in stress analyses and load calculations. 5 refs., 14 figs.

  10. Leakage Risk Assessment of CO{sub 2} Transportation by Pipeline at the Illinois Basin Decatur Project, Decatur, Illinois

    Energy Technology Data Exchange (ETDEWEB)

    Mazzoldi, A.; Oldenburg, C. M.

    2013-12-17

    The Illinois Basin Decatur Project (IBDP) is designed to confirm the ability of the Mt. Simon Sandstone, a major regional saline-water-bearing formation in the Illinois Basin, to store 1 million tons of carbon dioxide (CO{sub 2}) injected over a period of three years. The CO{sub 2} will be provided by Archer Daniels Midland (ADM) from its Decatur, Illinois, ethanol plant. In order to transport CO{sub 2} from the capture facility to the injection well (also located within the ADM plant boundaries), a high-pressure pipeline of length 3,200 ft (975 m) has been constructed, running above the ground surface within the ADM plant footprint. We have qualitatively evaluated risks associated with possible pipeline failure scenarios that lead to discharge of CO{sub 2} within the real-world environment of the ADM plant in which there are often workers and visitors in the vicinity of the pipeline. There are several aspects of CO{sub 2} that make its transportation and potential leakage somewhat different from other substances, most notable is its non-flammability and propensity to change to solid (dry ice) upon strong decompression. In this study, we present numerical simulations using Computational Fluid Dynamics (CFD) methods of the release and dispersion of CO{sub 2} from individual hypothetical pipeline failures (i.e., leaks). Failure frequency of the various components of a pipeline transportation system over time are taken from prior work on general pipeline safety and leakage modeling and suggest a 4.65% chance of some kind of pipeline failure over the three-years of operation. Following the Precautionary Principle (see below), we accounted for full-bore leakage scenarios, where the temporal evolution of the mass release rate from the high-pressure pipeline leak locations was simulated using a state-of-the-art Pipe model which considers the thermodynamic effects of decompression in the entire pipeline. Failures have been simulated at four representative locations along

  11. Design check against the construction code (DNV 2012) of an offshore pipeline using numerical methods

    Science.gov (United States)

    Stan, L. C.; Călimănescu, I.; Velcea, D. D.

    2016-08-01

    The production of oil and gas from offshore oil fields is, nowadays, more and more important. As a result of the increasing demand of oil, and being the shallow water reserves not enough, the industry is pushed forward to develop and exploit more difficult fields in deeper waters. In this paper, there will be deployed the new design code DNV 2012 in terms of checking an offshore pipeline as compliance with the requests of this new construction code, using the Bentley Autopipe V8i. The August 2012 revision of DNV offshore standard, DNV- OS-F101, Submarine Pipeline Systems is supported by AutoPIPE version 9.6. This paper provides a quick walk through for entering input data, analyzing and generating code compliance reports for a model with piping code selected as DNV Offshore 2012. As seen in the present paper, the simulations comprise geometrically complex pipeline subjected to various and variable loading conditions. At the end of the designing process the Engineer has to answer to a simple question: is that pipeline safe or not? The pipeline set as an example, has some sections that are not complying in terms of size and strength with the code DNV 2012 offshore pipelines. Obviously those sections have to be redesigned in a manner to meet those conditions.

  12. Marine Environmental Protection and Transboundary Pipeline Projects: A Case Study of the Nord Stream Pipeline

    Directory of Open Access Journals (Sweden)

    Alexander Lott

    2011-06-01

    Full Text Available The Nord Stream transboundary submarine pipeline, significant for its impact on the EU energy policy, has been a heav- ily debated issue in the Baltic Sea region during the past decade. This is partly due to the concerns over the effects that the pipeline might have on the Baltic Sea as a particularly sensitive large marine ecosystem.  This manuscript focuses on the issue from the viewpoint of the UNCLOS legal framework and its related treaties. It thus illustrates some of the more polemical topics arising in modern law of the sea and environmental law, eg limitations on the freedom to lay submarine pipelines, the scope and boundaries of marine scientific research, the obligation to consider alter- natives in the course of an EIA. In broader terms, this manuscript presents an explanatory study of matters mostly related to sustainable development, the precautionary principle and the ecosystem approach.

  13. Constructive use of holographic projections

    Energy Technology Data Exchange (ETDEWEB)

    Schroer, Bert [Centro Brasileiro de Pesquisas Fisicas (CBPF), Rio de Janeiro, RJ (Brazil); Institut fuer Theoretische Physik der FU, Berlin (Germany)

    2008-07-01

    Revisiting the old problem of existence of interacting models of QFT with new conceptual ideas and mathematical tools, one arrives at a novel view about the nature of QFT. The recent success of algebraic methods in establishing the existence of factorizing models suggests new directions for a more intrinsic constructive approach beyond Lagrangian quantization. Holographic projection simplifies certain properties of the bulk theory and hence is a promising new tool for these new attempts. (author)

  14. A Midas Plugin to Enable Construction of Reproducible Web-based Image Processing Pipelines

    Directory of Open Access Journals (Sweden)

    Michael eGrauer

    2013-12-01

    Full Text Available Image processing is an important quantitative technique for neuroscience researchers, but difficult for those who lack experience in the field. In this paper we present a web-based platform that allows an expert to create a brain image processing pipeline, enabling execution of that pipeline even by those biomedical researchers with limited image processing knowledge. These tools are implemented as a plugin for Midas, an open-source toolkit for creating web based scientific data storage and processing platforms. Using this plugin, an image processing expert can construct a pipeline, create a web-based UI, manage jobs, and visualize intermediate results. Pipelines are executed on a grid computing platform using BatchMake and HTCondor. This represents a new capability for biomedical researchers and offers an innovative platform for scientific collaboration. Current tools work well, but can be inaccessible for those lacking image processing expertise. Using this plugin, researchers in collaboration with image processing experts can create workflows with reasonable default settings and streamlined user interfaces, and data can be processed easily from a lab environment without the need for a powerful desktop computer. This platform allows simplified troubleshooting, centralized maintenance, and easy data sharing with collaborators. These capabilities enable reproducible science by sharing datasets and processing pipelines between collaborators. In this paper, we present a description of this innovative Midas plugin, along with results obtained from building and executing several ITK based image processing workflows for diffusion weighted MRI (DW MRI of rodent brain images, as well as recommendations for building automated image processing pipelines. Although the particular image processing pipelines developed were focused on rodent brain MRI, the presented plugin can be used to support any executable or script-based pipeline.

  15. A midas plugin to enable construction of reproducible web-based image processing pipelines.

    Science.gov (United States)

    Grauer, Michael; Reynolds, Patrick; Hoogstoel, Marion; Budin, Francois; Styner, Martin A; Oguz, Ipek

    2013-01-01

    Image processing is an important quantitative technique for neuroscience researchers, but difficult for those who lack experience in the field. In this paper we present a web-based platform that allows an expert to create a brain image processing pipeline, enabling execution of that pipeline even by those biomedical researchers with limited image processing knowledge. These tools are implemented as a plugin for Midas, an open-source toolkit for creating web based scientific data storage and processing platforms. Using this plugin, an image processing expert can construct a pipeline, create a web-based User Interface, manage jobs, and visualize intermediate results. Pipelines are executed on a grid computing platform using BatchMake and HTCondor. This represents a new capability for biomedical researchers and offers an innovative platform for scientific collaboration. Current tools work well, but can be inaccessible for those lacking image processing expertise. Using this plugin, researchers in collaboration with image processing experts can create workflows with reasonable default settings and streamlined user interfaces, and data can be processed easily from a lab environment without the need for a powerful desktop computer. This platform allows simplified troubleshooting, centralized maintenance, and easy data sharing with collaborators. These capabilities enable reproducible science by sharing datasets and processing pipelines between collaborators. In this paper, we present a description of this innovative Midas plugin, along with results obtained from building and executing several ITK based image processing workflows for diffusion weighted MRI (DW MRI) of rodent brain images, as well as recommendations for building automated image processing pipelines. Although the particular image processing pipelines developed were focused on rodent brain MRI, the presented plugin can be used to support any executable or script-based pipeline.

  16. External corrosion control of northern pipelines : influence of construction conditions on the performance of coatings

    Energy Technology Data Exchange (ETDEWEB)

    Papavinasam, S.; Doiron, A.

    2008-09-15

    Risk management is a key consideration in the construction of northern pipelines operating in harsh environments with extreme temperature conditions and ground movement. As such, it is important to acquire information on the properties of construction materials, including the steel itself, the girth welds that are made in the field and the coating and cathodic protection (CP) that will protect the pipes from corrosion and degradation. The use of polymeric coatings and CP are standard procedures for controlling external corrosion on buried or submerged metallic piping systems. When both systems fail, the pipeline is susceptible to stress corrosion cracking (SCC). This paper described methodologies to evaluate both external coatings under conditions anticipated during construction of the pipelines and to simulate the influence of freeze-thaw settlements on coating. The performance of an external pipeline coating depends on the events that occur during the 5 stages of the coating lifetime, notably manufacture, application, transportation, installation and operation. This paper reported on laboratory experiments that were conducted for 0, 4, 8 and 12 months to simulate 4 months of Canadian winter conditions in which samples were exposed to temperatures as low as -45 degrees C. Cathodic disbondment, impact resistance, flexibility, peel resistance, shearing and soil adhesion were tested. Field experiments were also carried out at Devon and Norman Wells for 0, 12, 24 and 36 months to investigate impact resistance and the squeeze test. The studies showed that Canadian Standards Association (CSA) standards CSA Z662, CSA Z245.20 and CSA Z245.21 adequately cover evaluation of coatings for northern pipelines. However, the pipelines specimens should be exposed for at least 4 months in order to evaluate the effects of low temperatures. 21 refs., 10 tabs., 25 figs., 4 appendices.

  17. Seismic behavior of buried pipelines constructed by design criteria and construction specifications of both Korea and the US

    Directory of Open Access Journals (Sweden)

    S.-S. Jeon

    2013-03-01

    Full Text Available Lifeline damage induced by earthquake loading not only causes structure damage but also communication problems resulting from the interruption of various energy utilities such as electric power, gas, and water resources. Earthquake loss estimation systems in the US, for example HAZUS (Hazard in US, have been established for the purpose of prevention and efficient response to earthquake hazards. Sufficient damage records obtained from earthquakes are required to establish these systems, however, in Korea, insufficient data sets of damage records are currently available. In this study, according to the design criteria and construction specifications of pipelines in Korea and the US, the behavior of both brittle and ductile pipelines embedded in dense sand overlying various in-situ soils, such as clay, sand, and gravel, were examined and compared with respect to the mechanical characteristics of pipelines under various earthquake loadings.

  18. 基于突变理论的油田管输建设工程项目环境风险评价%Oilfield pipeline construction project Environmental Risk Assessment based on Catastrophe Theory

    Institute of Scientific and Technical Information of China (English)

    王秀英; 胥卫平

    2011-01-01

    本文在环境风险评价理论的基础上。分析了突变理论及其在油田管输工程项目中的应用。通过分析油田管输建设前后生态系统的非同构性后,探讨了用突变理论解决油田管输工程中环境风险评价的可能性。%The main contents of this thesis are based on the environmental risk evaluation theory, and on the basis of analysis the mutation in oil field theory and the application of engineering project pipe-conveying. Through the analysis of oil field construction of ecological system pipe-conveying before and after the isomorphism after sex, and probes into the theory with mutations solving pipe- conveying engineering of the possibility of environmental risk assessment.

  19. DETECTION OF UNAUTHORIZED CONSTRUCTION EQUIPMENT IN PIPELINE RIGHT-OF-WAYS

    Energy Technology Data Exchange (ETDEWEB)

    James E. Huebler

    2003-01-29

    Natural gas transmission companies mark the right-of-way areas where pipelines are buried with warning signs to prevent accidental third-party damage. Nevertheless, pipelines are sometimes damaged by third-party construction equipment. A single incident can be devastating, causing death and millions of dollars of property loss. This damage would be prevented if potentially hazardous construction equipment could be detected, identified, and an alert given before the pipeline was damaged. The Gas Technology Institute (GTI) is developing a system to solve this problem by using an optical fiber as a distributed sensor and interrogating the fiber with a custom optical time domain reflectometer. Key issues are the ability to detect encroachment and the ability to discriminate among potentially hazardous and benign encroachments. The work performed in the 4th quarter of 2002 included fine-tuning and debugging of the custom Optical Time Domain Reflectometer being constructed for data collection and analysis. It also included installation of optical fibers at the test site along an operating pipeline.

  20. Multi-objective genetic optimization of linear construction projects

    Directory of Open Access Journals (Sweden)

    Fatma A. Agrama

    2012-08-01

    Full Text Available In the real world, the majority cases of optimization problems, met by engineers, are composed of several conflicting objectives. This paper presents an approach for a multi-objective optimization model for scheduling linear construction projects. Linear construction projects have many identical units wherein activities repeat from one unit to another. Highway, pipeline, and tunnels are good examples that exhibit repetitive characteristics. These projects represent a large portion of the construction industry. The present model enables construction planners to generate optimal/near-optimal construction plans that minimize project duration, total work interruptions, and total number of crews. Each of these plans identifies, from a set of feasible alternatives, optimal crew synchronization for each activity and activity interruptions at each unit. This model satisfies the following aspects: (1 it is based on the line of balance technique; (2 it considers non-serial typical activities networks with finish–start relationship and both lag or overlap time between activities is allowed; (3 it utilizes a multi-objective genetic algorithms approach; (4 it is developed as a spreadsheet template that is easy to use. Details of the model with visual charts are presented. An application example is analyzed to illustrate the use of the model and demonstrate its capabilities in optimizing the scheduling of linear construction projects.

  1. Manufacturing Technology Research and Appraisal of Large-Diameter SSAW Pipe Applied to the West-East Pipeline Project

    Institute of Scientific and Technical Information of China (English)

    DingXiaojun; YangZhongwen; XiaXianhua; LiXiaobo

    2005-01-01

    This paper introduced the research and development of large-diameter SSAW pipes applied to West-East Pipeline project as well as domestic acicular ferrite pipeline steel of X70 grade. Its microstructure analysis was performed in comparison with the pipeline steel of a foreign steel plant (SPC). This paper introduced the research of welding procedures prior to SSAW pipe making and some new procedures and technologies used for West-East Pipeline Project, and appraised the practical level of Large-diameter SSAW pipe applied to the West-East Pipeline Project.

  2. Overview of the design, construction, and operation of interstate liquid petroleum pipelines.

    Energy Technology Data Exchange (ETDEWEB)

    Pharris, T. C.; Kolpa, R. L.

    2008-01-31

    Geophysical Institute/International Arctic Research Center, both located in Fairbanks (Barboza and Trebelhorn 2001), available electronically at http://www.gi.alaska.edu/services/library/pipeline.html codes. The Association of Oil Pipe Lines (AOPL) and the American Petroleum Institute (API) jointly provide an overview covering the life cycle of design, construction, operations, maintenance, economic regulation, and deactivation of liquid pipelines (AOPL/API 2007).

  3. The ITER project construction status

    Science.gov (United States)

    Motojima, O.

    2015-10-01

    The pace of the ITER project in St Paul-lez-Durance, France is accelerating rapidly into its peak construction phase. With the completion of the B2 slab in August 2014, which will support about 400 000 metric tons of the tokamak complex structures and components, the construction is advancing on a daily basis. Magnet, vacuum vessel, cryostat, thermal shield, first wall and divertor structures are under construction or in prototype phase in the ITER member states of China, Europe, India, Japan, Korea, Russia, and the United States. Each of these member states has its own domestic agency (DA) to manage their procurements of components for ITER. Plant systems engineering is being transformed to fully integrate the tokamak and its auxiliary systems in preparation for the assembly and operations phase. CODAC, diagnostics, and the three main heating and current drive systems are also progressing, including the construction of the neutral beam test facility building in Padua, Italy. The conceptual design of the Chinese test blanket module system for ITER has been completed and those of the EU are well under way. Significant progress has been made addressing several outstanding physics issues including disruption load characterization, prediction, avoidance, and mitigation, first wall and divertor shaping, edge pedestal and SOL plasma stability, fuelling and plasma behaviour during confinement transients and W impurity transport. Further development of the ITER Research Plan has included a definition of the required plant configuration for 1st plasma and subsequent phases of ITER operation as well as the major plasma commissioning activities and the needs of the accompanying R&D program to ITER construction by the ITER parties.

  4. Piping and pipeline calculations manual construction, design fabrication and examination

    CERN Document Server

    Ellenberger, Philip

    2010-01-01

    The lack of commentary, or historical perspective, regarding the codes and standards requirements for piping design and construction is an obstacle to the designer, manufacturer, fabricator, supplier, erector, examiner, inspector, and owner who want to provide a safe and economical piping system. An intensive manual, this book will utilize hundreds of calculation and examples based on of 40 years of personal experiences of the author as both an engineer and instructor. Each example demonstrates how the code and standard has been correctly and incorrectly applied. This book is a ?no non

  5. Pipeline leakage recognition based on the projection singular value features and support vector machine

    Energy Technology Data Exchange (ETDEWEB)

    Liang, Wei; Zhang, Laibin; Mingda, Wang; Jinqiu, Hu [College of Mechanical and Transportation Engineering, China University of Petroleum, Beijing, (China)

    2010-07-01

    The negative wave pressure method is one of the processes used to detect leaks on oil pipelines. The development of new leakage recognition processes is difficult because it is practically impossible to collect leakage pressure samples. The method of leakage feature extraction and the selection of the recognition model are also important in pipeline leakage detection. This study investigated a new feature extraction approach Singular Value Projection (SVP). It projects the singular value to a standard basis. A new pipeline recognition model based on the multi-class Support Vector Machines was also developed. It was found that SVP is a clear and concise recognition feature of the negative pressure wave. Field experiments proved that the model provided a high recognition accuracy rate. This approach to pipeline leakage detection based on the SVP and SVM has a high application value.

  6. On the weak project construction cost management

    Institute of Scientific and Technical Information of China (English)

    高守刚; 姜婧; 李玲

    2013-01-01

    the weak cost management is the most talked about topics in the weak industry, but also the basis of the weak construction business management and focus. With the increasingly fierce market competition, weak construction enterprises, the competition among enterprises wil gradual y transition from product quality competition to price competition. To strengthen the management of the weak construction enterprises cost, cut public spending ef iciency, improve market competitiveness, wil be the main way most weak construction corporate earnings and long-term business strategy. Based on the to weak project construction cost management based on analysis of the type of project construction costs, and further proposed the weak project construction cost management measures.

  7. Construction of Pipelined Strategic Connected Dominating Set for Mobile Ad Hoc Networks

    Directory of Open Access Journals (Sweden)

    Ceronmani Sharmila

    2016-06-01

    Full Text Available Efficient routing between nodes is the most important challenge in a Mobile Ad Hoc Network (MANET. A Connected Dominating Set (CDS acts as a virtual backbone for routing in a MANET. Hence, the construction of CDS based on the need and its application plays a vital role in the applications of MANET. The PipeLined Strategic CDS (PLS-CDS is constructed based on strategy, dynamic diameter and transmission range. The strategy used for selecting the starting node is, any source node in the network, which has its entire destination within a virtual pipelined coverage, instead of the node with maximum connectivity. The other nodes are then selected based on density and velocity. The proposed CDS also utilizes the energy of the nodes in the network in an optimized manner. Simulation results showed that the proposed algorithm is better in terms of size of the CDS and average hop per path length.

  8. Legal and regulatory possibility of connection between interstate natural gas distribution networks instead of constructing transport pipelines; Possibilidade juridoco-regulatoria da conexao interestadual entre redes de distribuicao de gas natural como alternativa a construcao de gasodutos de transporte

    Energy Technology Data Exchange (ETDEWEB)

    Goncalves, Gustavo Mano [Andrade, Mano - Advogados, Rio de Janeiro, RJ (Brazil)

    2012-07-01

    According to Revista Brasil Energia (2011a), the local natural gas distribution concessionaire in the State of Sao Paulo Gas Brasiliano Distribuidora - GBD, plans to expand its distribution pipeline network in western Sao Paulo up to the border of the State of Minas Gerais, near the region known as Minas Triangle where a connection with the pipeline network of the State of Minas Gerais' natural gas distribution company, Companhia de Gas de Minas Gerais - GASMIG shall be built in order to supply natural gas to an ammonia plant to be built by PETROBRAS in the City of Uberaba. Still according to the publication, the project described above would be an alternative to the construction of a transportation pipeline that, since the enforcement of the Gas Law - Law No. 11.909/09 (Brasil, 2009), should be subject to concession contracts preceded by a complex, and probably delayed, planning and procurement. However, there is a transportation pipeline project, deriving from the Bolivia-Brazil transportation pipeline near the city of Sao Carlos, in Sao Paulo, crossing the Minas Triangle and finishing in the State of Goias. This project is owned by TGBC Company. The existence of two gas pipeline projects with very similar paths to supply virtually the same regions and based on different regulatory frameworks, one consisting of a connection between the distribution networks of different States and another based on the concept of pipeline transportation of gas under the legal and regulatory federal jurisdiction raises the discussion about the possibility of legal and regulatory interstate connections of distribution pipeline networks as an alternative to planning, allocation and construction of a transportation pipelines. This article aims to examine the legal and regulatory foundations of both alternatives and delineate the limits of performance of States and Federal Government on legislation and regulation concerning the movement of natural gas pipeline through the Country

  9. Feasibility assessment of path-planning for pipeline system construction of electric utilities network enhancement

    Energy Technology Data Exchange (ETDEWEB)

    Lin, C.C.; Huang, S.J. [National Cheng Kung Univ., Tainan, Taiwan (China). Dept. of Electrical Engineering

    2007-07-01

    This paper proposed an algorithm to improve the power transmission network in Taiwan which has experienced increased competition since the addition of competitive local exchange carriers (CLEC) into the telecommunication market. Recently, the CLECs requested to rent pipelines from the original incumbent local exchange carriers (ILECs) and from the Taiwan Power Company. The Taiwan Power Company not only builds transmission lines, but also telecommunication networks using different kinds of fiber optic cables, including Optical Power Ground Wire (OPGW), All-Dielectric Self-Supporting (ADSS), and Wrapped types (WOC). This paper also discussed the integration of pipeline rent-out work with AM/FM/geographic information system software. The Java-based software determines a shortest path-planning method for the piping layout to help improve the pipeline system and the construction of an electricity network. The method is expected to increase the use of existing pipelines by improving the efficiency of network planning and maintenance. The method also reduces the potential for design faults and is easy to apply in the field due to the clear criteria. This paper described the proposed system architecture in detail and presented test results. It was shown that the use of a shortest path for the piping layout can reduce the distance between manholes in the huge network. According to test results, the proposed method is considered to be feasible. 11 refs., 2 tabs., 10 figs.

  10. National Dam Safety Inspection. D and R Pipeline Construction Company Lake (MO 20396), Osage - Gasconade Basin, Greene County, Missouri. Phase I Inspection Report.

    Science.gov (United States)

    1979-08-01

    school, laboratory, etc., of the author. List city, state, and ZIP Code. d Block Prgram Element, Project, Task Area, and Work Unit Numbers. Enter here...Phase I Inspection Report This report presents the results of field inspection and evaluation of the D & R Pipeline Construction Company Lake Dam: It was...dwellings. our inspection and evaluation indicates that the com- bined spillways do not meet the criteria set forth in the guidelines for a dam having

  11. On the construction of a new stellar classification template library for the LAMOST spectral analysis pipeline

    Energy Technology Data Exchange (ETDEWEB)

    Wei, Peng; Luo, Ali; Li, Yinbi; Tu, Liangping; Wang, Fengfei; Zhang, Jiannan; Chen, Xiaoyan; Hou, Wen; Kong, Xiao; Wu, Yue; Zuo, Fang; Yi, Zhenping; Zhao, Yongheng; Chen, Jianjun; Du, Bing; Guo, Yanxin; Ren, Juanjuan [Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 (China); Pan, Jingchang; Jiang, Bin; Liu, Jie, E-mail: lal@nao.cas.cn, E-mail: weipeng@nao.cas.cn [School of Mechanical, Electrical, and Information Engineering, Shandong University, Weihai 264209 (China); and others

    2014-05-01

    The LAMOST spectral analysis pipeline, called the 1D pipeline, aims to classify and measure the spectra observed in the LAMOST survey. Through this pipeline, the observed stellar spectra are classified into different subclasses by matching with template spectra. Consequently, the performance of the stellar classification greatly depends on the quality of the template spectra. In this paper, we construct a new LAMOST stellar spectral classification template library, which is supposed to improve the precision and credibility of the present LAMOST stellar classification. About one million spectra are selected from LAMOST Data Release One to construct the new stellar templates, and they are gathered in 233 groups by two criteria: (1) pseudo g – r colors obtained by convolving the LAMOST spectra with the Sloan Digital Sky Survey ugriz filter response curve, and (2) the stellar subclass given by the LAMOST pipeline. In each group, the template spectra are constructed using three steps. (1) Outliers are excluded using the Local Outlier Probabilities algorithm, and then the principal component analysis method is applied to the remaining spectra of each group. About 5% of the one million spectra are ruled out as outliers. (2) All remaining spectra are reconstructed using the first principal components of each group. (3) The weighted average spectrum is used as the template spectrum in each group. Using the previous 3 steps, we initially obtain 216 stellar template spectra. We visually inspect all template spectra, and 29 spectra are abandoned due to low spectral quality. Furthermore, the MK classification for the remaining 187 template spectra is manually determined by comparing with 3 template libraries. Meanwhile, 10 template spectra whose subclass is difficult to determine are abandoned. Finally, we obtain a new template library containing 183 LAMOST template spectra with 61 different MK classes by combining it with the current library.

  12. Status of mapping for pre-detailing and projects of pipelines

    Energy Technology Data Exchange (ETDEWEB)

    Gil, Fabio Vinicius Fontoura; Paoletto, Bonatto Silvia M. [ESTEIO Engenharia e Aerolevantamentos S.A, Curitiba, PR (Brazil)

    2009-07-01

    Considering the ever growing need for widening and supplying of the national energy matrix, ESTEIO Engenharia e Aerolevantamentos SA presents its participation in the Pipeline area, through Cartography activities, pointing out the performance on strips yet to be implanted, with activities as aerial survey, laser surveys, creation of orthophotomap, tracing definition, rivers crossing, geotechnical surveys, cadaster, creation of cadaster maps, strips, basic project drawings, imagery maps, as well as activities for existing strips, such as: aerial survey, laser surveys, strips enlargements, new property surveys, detection of pipelines through PCM technology, planimetric survey of equipment, besides activities for Pipeline Strips Geometry - FEED - pointing out the detailing of the areas which will be used for the dumping of the digging material and definition of accesses to the pipeline strips. We shall also present the technological evolution and consequent product improvements, considering surveys performed with conventional and digital aerial survey cameras, besides laser data. (author)

  13. Mega Construction Projects: using stakeholder management for enhanced sustainable construction

    OpenAIRE

    Eyiah-Botwe, E; Aigbavboa, C; Thwala, WD

    2016-01-01

    The need for mega construction projects development for accelerated socio-economic growth is long overdue for developing countries. Some studies have considered stakeholder management and sustainable construction concepts separately without exploring the simultaneous use for mega projects delivery. This paper reviews the two concepts and suggests a process for enhanced sustainable construction delivery. This study forms part of a broader Ph.D. study on “Development of sustainable ...

  14. Power plant pipeline construction: Task and work organisation in the construction of power plant pipelines; Auftragsabwicklung und Montageorganisation bei der Realisierung von Kraftwerksrohrleitungen

    Energy Technology Data Exchange (ETDEWEB)

    Reuter, G.; Buttler, U.; Schwarzwalder, H. [vom hagen mce, Bochum (Germany)

    2000-07-01

    In pipeline construction, the supplier is hampered in his planning by the tasks to be carried out by the customer and/or other suppiers. In consequence, careful organisation and the use of the proper methods and means are required. The contribution discusses the organisation of task management in general and the planning instruments used at vom hagen mce in particular. [German] Bei der Ablaufplanung sind durch den Auftragnehmer gemaess Vertrag zu erbringende sowie vom Kunden selbst oder anderen Lieferanten beizustellende Leistungen zu beruecksichtigen. Die Eigenbestimmbarkeit der Ablaeufe wird hierdurch massgeblich eingeschraenkt. Um die Abwicklung in einem vorgesehenen Termin- und durch die Vertragspreise gegebenen Kostenrahmen mit der erforderlichen Qualitaet abzusichern, sind entsprechende organisatorische Rahmenbedingungen zu schaffen und die richtigen Methoden und Mittel einzusetzen. Der Beitrag geht im ersten Teil auf die Organisation der Projektabwicklung und im Weiteren auf bei der Firma vom hagen mce angewendete Planungsinstrumente ein. (orig.)

  15. DETECTION OF UNAUTHORIZED CONSTRUCTION EQUIPMENT IN PIPELINE RIGHT-OF-WAYS

    Energy Technology Data Exchange (ETDEWEB)

    James E. Huebler

    2004-07-26

    Natural gas transmission companies mark the right-of-way areas where pipelines are buried with warning signs to prevent accidental third-party damage. Nevertheless, pipelines are sometimes damaged by third-party construction equipment. A single incident can be devastating, causing death and millions of dollars of property loss. This damage would be prevented if potentially hazardous construction equipment could be detected, identified, and an alert given before the pipeline was damaged. The Gas Technology Institute (GTI) is developing a system to solve this problem by using an optical fiber as a distributed sensor and interrogating the fiber with a custom optical time domain reflectometer. Key issues are the ability to detect encroachment and the ability to discriminate among potentially hazardous and benign encroachments. The work continues on improving the signal-to-noise ratio of the technique. We are now able to detect weights sitting on the Hergalite fiber of as low as 0.2 pound. A brighter diode laser increased our sensitivity by a factor of ten. Detection of load fluctuations with frequencies greater than 5 Hertz is also possible. The next step is beginning measurements at the field site.

  16. DETECTION OF UNAUTHORIZED CONSTRUCTION EQUIPMENT IN PIPELINE RIGHT-OF-WAYS

    Energy Technology Data Exchange (ETDEWEB)

    James E. Huebler

    2003-07-17

    Natural gas transmission companies mark the right-of-way areas where pipelines are buried with warning signs to prevent accidental third-party damage. Nevertheless, pipelines are sometimes damaged by third-party construction equipment. A single incident can be devastating, causing death and millions of dollars of property loss. This damage would be prevented if potentially hazardous construction equipment could be detected, identified, and an alert given before the pipeline was damaged. The Gas Technology Institute (GTI) is developing a system to solve this problem by using an optical fiber as a distributed sensor and interrogating the fiber with a custom optical time domain reflectometer. Key issues are the ability to detect encroachment and the ability to discriminate among potentially hazardous and benign encroachments. The work continues on improving the signal-to-noise ratio of the custom OTDR. An avalanche photo-detector, was purchased. It was able to detect weights on the Hergalite fiber as low as one pound. We are also investigating a brighter laser for use with the multimode fibers.

  17. DETECTION OF UNAUTHORIZED CONSTRUCTION EQUIPMENT IN PIPELINE RIGHT-OF-WAYS

    Energy Technology Data Exchange (ETDEWEB)

    James E. Huebler

    2004-04-12

    Natural gas transmission companies mark the right-of-way areas where pipelines are buried with warning signs to prevent accidental third-party damage. Nevertheless, pipelines are sometimes damaged by third-party construction equipment. A single incident can be devastating, causing death and millions of dollars of property loss. This damage would be prevented if potentially hazardous construction equipment could be detected, identified, and an alert given before the pipeline was damaged. The Gas Technology Institute (GTI) is developing a system to solve this problem by using an optical fiber as a distributed sensor and interrogating the fiber with a custom optical time domain reflectometer. Key issues are the ability to detect encroachment and the ability to discriminate among potentially hazardous and benign encroachments. The work continues on improving the signal-to-noise ratio of the technique. We are now able to detect weights sitting on the Hergalite fiber of as low as 0.2 pound. Detection of load fluctuations with frequencies greater than 1 Hertz is also possible. We have also purchased a brighter diode laser for use with the multimode fibers that should improve our sensitivity by a factor of ten.

  18. Construction of the X100 operational trial pipeline at Spadeadam, Cumbria, UK

    Energy Technology Data Exchange (ETDEWEB)

    Millwood, N. A. [BMT Fleet Technology Ltd, Leicestershire, (United Kingdom); Johnson, J.; Hudson, M. [BP Explorations Operating CO Ltd, Sunbury-on-Thames, (United Kingdom); Armstrong, K. [GL Noble Denton Ltd, Spadeadam, (United Kingdom)

    2010-07-01

    Intermediate field construction trials using grade X100 steel pipeline have been carried out recently to demonstrate the manufacturers' ability to build large diameter high strength steel pipelines. This paper reports the construction of an X100 operational trial pipeline for BP and focuses on the studies of the performance of the girth welding systems used. The mainline welding on X100 pipe was performed using a single tandem wire GMAW. All-weld tensile testing, Charpy impact testing, CTOD testing using SENB specimens and hardness testing were completed to monitor the integrity of the metal welds. The tie-in was performed using a vertical-up mechanized FCAW system and a vertical-down STT root pass. Weld procedure qualification testing on the tie-in was carried out as well. AUT was carried out on all the mainline girth welds using a phased-array system. The results demonstrated that the operational trial succeeded in testing the girth welds at a design factor of 0.8.

  19. Tingzikou key water control project started construction

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    Tingzikou key water control project on Jialing River, one of 18 newly started key projects in 2009 for China's western part development program, formally started construction at the end of November last year.

  20. Knowledge-based planning for construction projects

    Energy Technology Data Exchange (ETDEWEB)

    Zozaya-Gorostiza, C.A.

    1988-01-01

    This study investigates the development of knowledge-based computer tools that assist an engineer during the construction planning process. A knowledge-based expert-system architecture which provides means for representing and using project planning knowledge is described. This architecture, called PLANEX, has been used for developing three prototype knowledge-based systems for construction, excavation, and manufacturing project planning. One of these prototypes, called CONSTRUCTION PLANEX, assists in the planning for the excavation and structural erection of concrete and steel buildings. This system uses construction planning knowledge to generate project activity networks, recommend appropriate construction technologies, estimate durations and costs and prepare project schedules. CONSTRUCTION PLANEX has been applied in laboratory simulations in three ways: interactively as an intelligent assistant, independently as an automated planner, and as part of an integrated building design environment. Example applications have ranged from two to twenty stories. The development of the PLANEX architecture and the CONSTRUCTION PLANEX system produced contributions in several research areas.

  1. CFSAN SNP Pipeline: an automated method for constructing SNP matrices from next-generation sequence data

    Directory of Open Access Journals (Sweden)

    Steve Davis

    2015-08-01

    Full Text Available The analysis of next-generation sequence (NGS data is often a fragmented step-wise process. For example, multiple pieces of software are typically needed to map NGS reads, extract variant sites, and construct a DNA sequence matrix containing only single nucleotide polymorphisms (i.e., a SNP matrix for a set of individuals. The management and chaining of these software pieces and their outputs can often be a cumbersome and difficult task. Here, we present CFSAN SNP Pipeline, which combines into a single package the mapping of NGS reads to a reference genome with Bowtie2, processing of those mapping (BAM files using SAMtools, identification of variant sites using VarScan, and production of a SNP matrix using custom Python scripts. We also introduce a Python package (CFSAN SNP Mutator that when given a reference genome will generate variants of known position against which we validate our pipeline. We created 1,000 simulated Salmonella enterica sp. enterica Serovar Agona genomes at 100× and 20× coverage, each containing 500 SNPs, 20 single-base insertions and 20 single-base deletions. For the 100× dataset, the CFSAN SNP Pipeline recovered 98.9% of the introduced SNPs and had a false positive rate of 1.04 × 10−6; for the 20× dataset 98.8% of SNPs were recovered and the false positive rate was 8.34 × 10−7. Based on these results, CFSAN SNP Pipeline is a robust and accurate tool that it is among the first to combine into a single executable the myriad steps required to produce a SNP matrix from NGS data. Such a tool is useful to those working in an applied setting (e.g., food safety traceback investigations as well as for those interested in evolutionary questions.

  2. Innovation tube transport using helicopters to minimize the construction risk of Urucu-Manaus pipeline

    Energy Technology Data Exchange (ETDEWEB)

    Barreto, Jean Luis C. [PETROBRAS S.A., Rio de Janeiro, RJ (Brazil); Mendes, Jeane R.; Rodrigues, Jose Alberto S.; Rocha, Katia Rosilene S. [CONCREMAT Engenharia e Tecnologia Ltda., Rio de Janeiro, RJ (Brazil)

    2009-07-01

    Our purpose is to focus on the Safety, Environment and Health (SEH) Management, integrated to pipeline construction and assembly, aiming at minimizing the risks involving the transportation and handling of 20-inch pipes. Please note that peculiar, challenging situations occur when constructing a gas pipeline at the Coari-Anama Section, which leads to some difficulty in the exploitation of oil and gas, where fragile elements represented by the environment and man are faced in this evolution and progress process. Overcoming the severe conditions while streaming 196.6-km-length of pipes in flooded lands no doubt represented a real challenge. State-of-the-art techniques have been implemented such as air transportation of pipes, with two large-sized helicopters being used (Kamov and S64 Skycrane). This has demanded integrated actions to be adopted, involving transportation of concrete pipes, double joints, pipesak, hydraulic excavators, net carrier containing assorted materials, skids and natural gas pressure, measurement and filtering equipment. Nevertheless, we have succeeded in reducing the rate of exposure to the construction and assembly process risks, thus minimizing occurrences and improving the conditions of processes, where, had the conventional method been used, would have led to a great amount of incidents and accidents, resulting mainly from the huge logistic difficulties, which would expose the task force to high potential risks. (author)

  3. Management of health in the construction and assembly of land pipelines

    Energy Technology Data Exchange (ETDEWEB)

    Richa, Newton M.M.; Ruella, Nildemar C. [PETROBRAS, Rio de Janeiro, RJ (Brazil)

    2009-07-01

    The objectives of this study are: describe the main aspects of a health management experience in a work of construction and assembly of land pipeline, highlighting the positive impacts on safety and productivity; demonstrate that the general objective of the health function is to provide technical support to companies, information and services for leaders, managers, supervisors, workers and families in the management of multiple interfaces of health, especially the health-work interface; and demonstrate that the appropriate management of health may contribute significantly to the overall management of undertakings. (author)

  4. Computer Technology in Construction Project Management

    Institute of Scientific and Technical Information of China (English)

    Zhang Zhi

    2014-01-01

    Today, the network information has become a trend al of the industries have to face. For the construction project management, we must fuly master the use of computer information technology, mining its intrinsic value, so that it can promote the construction industry to meet the requirements of the times. This paper demonstrates the main application of computer technology in construction project management in a brief analysis.

  5. Application of groundwater aggressiveness assessment method for estimation of the karst process at main gas pipeline construction

    Science.gov (United States)

    Ermolaeva, A. V.

    2016-03-01

    Main pipelines maintenance is connected with hazard engineering and geological working conditions. The article deals with the use of groundwater aggressiveness assessment method to estimate the karst processes development during the construction of main gas pipelines. The possibility of using this method is analyzed on the example of the initial section of the designed gas pipeline “Power of Siberia” (section “Chayanda-Lensk"). The calculation of the nonequilibrium index Ca was made in accordance with the geotechnical survey data. The dependencies between the geomorphological features of the terrain and the natural waters aggressiveness were determined.

  6. Jinde Lead lead smelting project starts construction

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    <正>On Dec.20,the lead smelting project of Jiangxi Jinde Lead started construction in Dexin as a technical renovation project on environmental treatment of Jiangxi Metallurgical Group.The project is the one with the largest investment of Provincial Metallurgical Group in non-ferrous

  7. Assessment of ecological and human health risks of heavy metal contamination in agriculture soils disturbed by pipeline construction.

    Science.gov (United States)

    Shi, Peng; Xiao, Jun; Wang, Yafeng; Chen, Liding

    2014-02-28

    The construction of large-scale infrastructures such as nature gas/oil pipelines involves extensive disturbance to regional ecosystems. Few studies have documented the soil degradation and heavy metal contamination caused by pipeline construction. In this study, chromium (Cr), cadmium (Cd), copper (Cu), nickel (Ni), lead (Pb) and zinc (Zn) levels were evaluated using Index of Geo-accumulation (Igeo) and Potential Ecological Risk Index (RI) values, and human health risk assessments were used to elucidate the level and spatial variation of heavy metal pollution risks. The results showed that the impact zone of pipeline installation on soil heavy metal contamination was restricted to pipeline right-of-way (RoW), which had higher Igeo of Cd, Cu, Ni and Pb than that of 20 m and 50 m. RI showed a declining tendency in different zones as follows: trench > working zone > piling area > 20 m > 50 m. Pipeline RoW resulted in higher human health risks than that of 20 m and 50 m, and children were more susceptible to non-carcinogenic hazard risk. Cluster analysis showed that Cu, Ni, Pb and Cd had similar sources, drawing attention to the anthropogenic activity. The findings in this study should help better understand the type, degree, scope and sources of heavy metal pollution from pipeline construction to reduce pollutant emissions, and are helpful in providing a scientific basis for future risk management.

  8. Assessment of Ecological and Human Health Risks of Heavy Metal Contamination in Agriculture Soils Disturbed by Pipeline Construction

    Directory of Open Access Journals (Sweden)

    Peng Shi

    2014-02-01

    Full Text Available The construction of large-scale infrastructures such as nature gas/oil pipelines involves extensive disturbance to regional ecosystems. Few studies have documented the soil degradation and heavy metal contamination caused by pipeline construction. In this study, chromium (Cr, cadmium (Cd, copper (Cu, nickel (Ni, lead (Pb and zinc (Zn levels were evaluated using Index of Geo-accumulation (Igeo and Potential Ecological Risk Index (RI values, and human health risk assessments were used to elucidate the level and spatial variation of heavy metal pollution risks. The results showed that the impact zone of pipeline installation on soil heavy metal contamination was restricted to pipeline right-of-way (RoW, which had higher Igeo of Cd, Cu, Ni and Pb than that of 20 m and 50 m. RI showed a declining tendency in different zones as follows: trench > working zone > piling area > 20 m > 50 m. Pipeline RoW resulted in higher human health risks than that of 20 m and 50 m, and children were more susceptible to non-carcinogenic hazard risk. Cluster analysis showed that Cu, Ni, Pb and Cd had similar sources, drawing attention to the anthropogenic activity. The findings in this study should help better understand the type, degree, scope and sources of heavy metal pollution from pipeline construction to reduce pollutant emissions, and are helpful in providing a scientific basis for future risk management.

  9. Assessment of Ecological and Human Health Risks of Heavy Metal Contamination in Agriculture Soils Disturbed by Pipeline Construction

    Science.gov (United States)

    Shi, Peng; Xiao, Jun; Wang, Yafeng; Chen, Liding

    2014-01-01

    The construction of large-scale infrastructures such as nature gas/oil pipelines involves extensive disturbance to regional ecosystems. Few studies have documented the soil degradation and heavy metal contamination caused by pipeline construction. In this study, chromium (Cr), cadmium (Cd), copper (Cu), nickel (Ni), lead (Pb) and zinc (Zn) levels were evaluated using Index of Geo-accumulation (Igeo) and Potential Ecological Risk Index (RI) values, and human health risk assessments were used to elucidate the level and spatial variation of heavy metal pollution risks. The results showed that the impact zone of pipeline installation on soil heavy metal contamination was restricted to pipeline right-of-way (RoW), which had higher Igeo of Cd, Cu, Ni and Pb than that of 20 m and 50 m. RI showed a declining tendency in different zones as follows: trench > working zone > piling area > 20 m > 50 m. Pipeline RoW resulted in higher human health risks than that of 20 m and 50 m, and children were more susceptible to non-carcinogenic hazard risk. Cluster analysis showed that Cu, Ni, Pb and Cd had similar sources, drawing attention to the anthropogenic activity. The findings in this study should help better understand the type, degree, scope and sources of heavy metal pollution from pipeline construction to reduce pollutant emissions, and are helpful in providing a scientific basis for future risk management. PMID:24590049

  10. MULTIPLE PROJECT MANAGEMENT IN THE CONSTRUCTION INDSUTRY

    Directory of Open Access Journals (Sweden)

    Luciana Hazin Alencar

    2010-06-01

    Full Text Available The field of project management has historically focused on the administration of one project at a time, a focus that is insufficient given the growing need for organizations to manage multiple projects simultaneously. The requirements of Multiple Project Management (MPM involves demands and practices that are different from those of single projects. MPM poses a special need for coordination of shared resources across multiple projects in a way that can maintain the firm’s strategic focus and facilitate effective decision making. The construction industry is noteworthy for its frequent need for the management of multiple projects. This paper offers a review of the last five years of indexed literature related to multiple project management in the construction industry, identifies gaps and suggests promising new avenues of inquiry.

  11. Improvement of Construction Project Management Processes

    OpenAIRE

    Nazarko, J.

    2017-01-01

    The common denominator of the five papers published in the current edition of the Journal of Engineering, Project, and Production Management is the improvement of construction project management processes for effective use of resources. Execution of proper project management processes is widely recognized as a key success factor influencing likelihood of project success (Alleman, 2014). It is noticeable that four out of five papers in this issue of the Journal are authored or co-authored by I...

  12. Project for Offshore Horizontal Directional Drilling (HDD for Pipeline Crossing in Bukit Tua, Indonesia

    Directory of Open Access Journals (Sweden)

    Yusuf Sofyan

    2016-09-01

    Full Text Available Horizontal Directional Drilling (HDD is commonly associated with well exploration activity, onshore road crossing, nearshore pipeline installation, and offshore pipeline crossing which requires precise alignment of two barges from one to the other. Here, the purpose of this study was to show one of the projects that was successfully performed on December 2013 for the Bukit Tua Project in East Java, Indonesia costing USD 8 Million. From this project experience, there are 6 Best Practices in HDD Offshore Project for Pipeline Crossing Application (first in region which will serve as a guide to future projects in replicating similar success. Out from 6 Best practices, there are two main recipes for success of HDD offshore for offshore crossings which are the drilling fluid also known as mud, and the Gyro Steering Tool (GST. First, mud parameter varies on case by case basis depending on the soil condition at the location where HDD will be performed. Failure to maintain the above parameters may result in catastrophic failure whereby the bore hole may collapse and pipe may get stuck underneath the seabed. Secondly, the beauty of GST is extremely accurate and unaffected by other metal anomalies during drilling process, thus ensuring the curve profile and direction of drilling are as per design throughout the whole process.

  13. Differential subsidence and its effect on subsurface infrastructure: predicting probability of pipeline failure (STOOP project)

    Science.gov (United States)

    de Bruijn, Renée; Dabekaussen, Willem; Hijma, Marc; Wiersma, Ane; Abspoel-Bukman, Linda; Boeije, Remco; Courage, Wim; van der Geest, Johan; Hamburg, Marc; Harmsma, Edwin; Helmholt, Kristian; van den Heuvel, Frank; Kruse, Henk; Langius, Erik; Lazovik, Elena

    2017-04-01

    Due to heterogeneity of the subsurface in the delta environment of the Netherlands, differential subsidence over short distances results in tension and subsequent wear of subsurface infrastructure, such as water and gas pipelines. Due to uncertainties in the build-up of the subsurface, however, it is unknown where this problem is the most prominent. This is a problem for asset managers deciding when a pipeline needs replacement: damaged pipelines endanger security of supply and pose a significant threat to safety, yet premature replacement raises needless expenses. In both cases, costs - financial or other - are high. Therefore, an interdisciplinary research team of geotechnicians, geologists and Big Data engineers from research institutes TNO, Deltares and SkyGeo developed a stochastic model to predict differential subsidence and the probability of consequent pipeline failure on a (sub-)street level. In this project pipeline data from company databases is combined with a stochastic geological model and information on (historical) groundwater levels and overburden material. Probability of pipeline failure is modelled by a coupling with a subsidence model and two separate models on pipeline behaviour under stress, using a probabilistic approach. The total length of pipelines (approx. 200.000 km operational in the Netherlands) and the complexity of the model chain that is needed to calculate a chance of failure, results in large computational challenges, as it requires massive evaluation of possible scenarios to reach the required level of confidence. To cope with this, a scalable computational infrastructure has been developed, composing a model workflow in which components have a heterogeneous technological basis. Three pilot areas covering an urban, a rural and a mixed environment, characterised by different groundwater-management strategies and different overburden histories, are used to evaluate the differences in subsidence and uncertainties that come with

  14. REPNET: project scheduling and workflow optimization for Construction Projects

    Directory of Open Access Journals (Sweden)

    Marco Alvise Bragadin

    2013-10-01

    Full Text Available Project planning and control are core processes for construction management. In practice project planning is achieved by network - based techniques like Precedence Diagramming Method (PDM.Indeed many researchers and practitioners claims that networking techniques as such do not provide a suitable model for construction projects. Construction process modeling should incorporate for specific features of resource flows through project activities. So an improved resource scheduling method for construction is developed, called REPNET, based on a precedence network plotted on a resource–space chart and presented with a flow-line chart. The heuristics of REPNET are used to carry out resource timing while optimizing processes flows and resource usage. The method has been tested on a sample project.

  15. ONR K 16 Engineering Pipeline :Engineering Success in STEM Project

    Science.gov (United States)

    2016-10-19

    learning ( PBL ). Last, teachers participated in the project for different lengths of time (Kaimuki teachers had three years with the ESS, and 12 others had...individuals talked about how their experiences in the project increased their confidence with problem-based learning ( PBL ). As one person declared, "The...other thing that I felt confident about was we just had a 3-day workshop doing the PBL and the PBL is exactly the same as the EDP and I sat there for 3

  16. Biomass furnace: projection and construction

    Energy Technology Data Exchange (ETDEWEB)

    Melo, Fernanda Augusta de Oliveira; Silva, Juarez Sousa e; Silva, Denise de Freitas; Sampaio, Cristiane Pires; Nascimento Junior, Jose Henrique do [Universidade Federal de Vicosa (DEA/UFV), MG (Brazil). Dept. de Engenharia Agricola

    2008-07-01

    Of all the ways to convert biomass into thermal energy, direct combustion is the oldest. The thermal-chemical technologies of biomass conversion such as pyrolysis and gasification, are currently not the most important alternatives; combustion is responsible for 97% of the bio-energy produced in the world (Demirbas, 2003). For this work, a small furnace was designed and constructed to use biomass as its main source of fuel, and the combustion chamber was coupled with a helical transporter which linked to the secondary fuel reservoir to continually feed the combustion chamber with fine particles of agro-industrial residues. The design of the stove proved to be technically viable beginning with the balance of mass and energy for the air heating system. The proposed heat generator was easily constructed as it made use of simple and easily acquired materials, demanding no specialized labor. (author)

  17. The importance of an entomo-epidemiological monitoring in the construction of pipelines at the Amazon

    Energy Technology Data Exchange (ETDEWEB)

    Cruz, Elidianne da S.; Valgas, Luciana L.; Batista, Rita de Cassia G.; Agostini, Lucimara de; Pereira, Andreia Labrea; Freitas, Wanderleia Isabel P. de; Frade, Amadeu Farage [PETROBRAS S.A., Rio de Janeiro, RJ (Brazil)

    2009-12-19

    This work has as objective to evidence one of the consequences of most satisfactory results, talking about attendance to the legal requirements of health on a pipeline undertake at the Amazon: a positive result of index zero of malaria cases until the present days. This work, in its peak, reached the contingent of eight thousand workers lodged in rafts, boats, carps and jungle camps. To reach this index, a methodology of prevention through an entomo epidemiological control was adopted, recommended for the World-wide Organization of Health, as basic activity for malaria control in endemic areas, as in Amazon. The activities had consisted to identify the epidemiologic profile of each area, to elaborate procedures of vectorial control, to implant laboratories for analysis of malaria blades, to enable staff to accomplishment of vectorial control, to realize thermo nebulization and domestic spread and to sensitize the workers of prevention and control measures. Therefore, by means of accomplishment of these basic actions, it was possible to assure an integral, equitable and qualitative attendance providing a critical and conscientious vision of involved and the success of the procedures adopted by PETROBRAS, represented by ENGENHARIA/IENOR (Northern Undertake Implementation), unit responsible for the pipeline Urucu-Manaus Construction. (author)

  18. PETROCHINA WEST EAST GAS PIPELINE & SALES COMPANY

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    @@ PetroChina West East Gas Pipeline & Sales Company, a regional company directly under PetroChina Company Limited (PetroChina), is responsible for the construction and operation of the West-East Gas Pipeline Project, and the gas marketing and sales of the natural gas market in China.

  19. Lean in Construction Projects : Is lean suitable for all construction projects?

    OpenAIRE

    Tomas, Lindholm

    2014-01-01

    Due to the low productivity growth in the construction industry, there are discussions about theories and tools that could support an increased productivity in construction projects. One such ‘theory’ or package of tools is lean. Lean has been used successfully for decades in the car manufacturing industry, Toyota for example, and in other industries as the shipbuilding industry. In the construction industry, the use of the word lean is not frequently used and construction projects could migh...

  20. Determinants of construction project success in India

    CERN Document Server

    Jha, Kumar Neeraj

    2013-01-01

    This study presents exploratory work and seeks to identify and evaluate the success and failure factors that could form a guideline for further study and to some extent help professionals to understand some critical aspects that impact project performance concerning construction in India. A total of 55 attributes affecting the performance of construction projects are analysed in terms of their level of influence on four key performance criteria – schedule, cost, quality, and no disputes – using a two-stage questionnaire survey. These attributes are then further analysed, interpreted and evaluated.   Based on the critical success factors obtained from the study, a neural network model-based predictive model for project performance has been developed. The performance prediction models have been derived for all four project performance criteria. Further, a hypothesis that ‘project success’ is influenced by ‘success traits’ has also been formulated. The hypothesized positive inter-relationships betwe...

  1. Prospects for energy conservation in the pipeline industry. Technical report, tasks 4 and 5. [Growth projection to year 2000

    Energy Technology Data Exchange (ETDEWEB)

    Banks, W. F.

    1977-11-30

    A qualitative projection (the baseline scenario) is made of the pipeline industry growth to the year 2000. This projection is based on the conventional wisdom of the industry. It is concluded that, to achieve significant growth, the industry must develop the capability, called freight pipeline, to move other commodities than oil and gas, i.e., bulk and packaged goods. Technical and economic performance criteria are identified which, if met by the freight pipeline capability, could induce modal shifts resulting in a reduction of total transportation energy consumption, and would offer other benefits, including compatibility with high-speed rail passenger service.

  2. Bi-project management in engineering complex industrial construction projects

    NARCIS (Netherlands)

    Velde, Robert R. van der; Donk, Dirk Pieter van

    2000-01-01

    Engineering large industrial construction projects is usually a complex task with several co-operating actors. This paper investigates such projects, characterised by two main actors: the owner of the installation (the client organisation) responsible for the engineering of the production process,

  3. Improvement of Construction Project Management Processes

    Directory of Open Access Journals (Sweden)

    Nazarko, J.

    2017-07-01

    Full Text Available The common denominator of the five papers published in the current edition of the Journal of Engineering, Project, and Production Management is the improvement of construction project management processes for effective use of resources. Execution of proper project management processes is widely recognized as a key success factor influencing likelihood of project success (Alleman, 2014. It is noticeable that four out of five papers in this issue of the Journal are authored or co-authored by Iranian researchers from the same Institute but their conclusions bear importance that cannot be limited to the authors’ region.

  4. 18 CFR 2.67 - Calculation of taxes for property of pipeline companies constructed or acquired after January 1...

    Science.gov (United States)

    2010-04-01

    ... 18 Conservation of Power and Water Resources 1 2010-04-01 2010-04-01 false Calculation of taxes for property of pipeline companies constructed or acquired after January 1, 1970. 2.67 Section 2.67 Conservation of Power and Water Resources FEDERAL ENERGY REGULATORY COMMISSION, DEPARTMENT OF ENERGY...

  5. The blind faith deep water horizontal pipeline tie-in project

    Energy Technology Data Exchange (ETDEWEB)

    Charalambides, John Nicos [Oceaneering International, Inc., Houston, TX (United States)

    2009-12-19

    This presentation will concentrate on the design challenges, experience and learning from the SIT and offshore installation of two deepwater pipeline tie-ins using first-of-its-kind subsea technology and installation methodologies on the 'Blind Faith' project. The Blind Faith Subsea Tie-Ins join the Blind Faith oil and gas pipelines with the Canyon Chief gas pipeline and the Mountaineer oil pipeline in 5100 feet of water. Both of the Blind Faith oil and gas pipelines are terminated with conventional PLEMs providing a horizontal connector for the tie-in and a vertical connector for a future tie-in connection point. The connectors are ROV operable/installable clamp style connectors. The method of joining to the Canyon Chief oil and gas pipelines and the type of jumper employed are unique to the tie-in. An ROV operable / installable mechanical pipe end connector connects the bare ends of the Canyon Chief and Mountaineer pipelines. The mechanical pipe end connector is fitted with an integral clamp connector hub and rests on an ROV installed mud mat. After installation of the mechanical connector, metrology was performed to create a neutral state horizontal jumper for joining the mechanical connector hub and the Blind Faith PLEM. The neutral state horizontal jumper is a compliant 'Z-Bend' design. During installation the jumper was elastically pre-deformed using a bowstring system. Pre-deformation of the jumper provided installation clearances and facilitated the neutral stress state after installation. Once landed the jumper bowstring was relaxed, allowing the jumper to expand to fit between the hubs. After expansion and make-up, the clamp connectors were tightened via an ROV operated hydraulic torque wrench. A seal test verified the integrity of the connections. After installation the jumper remains in a minimal residual stress state atypical of most horizontal jumpers. The horizontal jumper was chosen over the vertical jumper because it provides a

  6. Technology Management on Large Construction Projects

    DEFF Research Database (Denmark)

    Bonke, Sten

    The aim of this text is to discuss and to develop the concept of technology management in relation to the empirical field of construction projects. In the first of the two main sections central theories and their derived assertions concerning technology management criteria are summed up...... in a schematic theoretical framework. Hereafter the general characteristics of construction are examined from the point of view of serving as an empirical field for technology management analysis. In the second section the technology management theme is associated with the empirical properties of the Great Belt...... Fixed Link construction project. Finally on this basis the concluding remarks are pointing to the main theoretical problems and their practical implementations for the introduction of a technology management discipline in construction....

  7. Study on application of project management technology on pipeline project from Sichuan to Shanghai%项目管理技术在川气东送管道工程中的应用研究

    Institute of Scientific and Technical Information of China (English)

    李平

    2011-01-01

    By taking mega oil and gas pipeline project——pipeline project construction from Sichuan to Shanghai as background,introduces the contents of mega oil and gas pipeline project management,such as organization construction,management procedure,work team permission,standardizing materials purchasing,HSE management innovation,construction quality control,standard management of information and document,overall project quality improvement,and so on.At the same time states the project management innovation and summarizes a series of management achievements that project acquired.These achievements have certain guidance significance for subsequent mega oil and gas pipeline project and are worthy to be referred and spread.%通过以大型油气管道工程——川气东送管道工程建设为背景,介绍了大型管道工程项目管理的组织机构建设、项目管理程序、参建队伍的准入、物资采购标准化、HSE管理创新、施工过程质量控制、信息和资料规范化管理、全面提升工程质量等方面的内容,同时对项目管理创新进行了阐述,总结了在工程建设项目管理中所取得的一系列成果,这些成果对今后国内大型油气管道工程建设具有一定的指导意义,值得借鉴和推广。

  8. Constructing Flexible, Configurable, ETL Pipelines for the Analysis of "Big Data" with Apache OODT

    Science.gov (United States)

    Hart, A. F.; Mattmann, C. A.; Ramirez, P.; Verma, R.; Zimdars, P. A.; Park, S.; Estrada, A.; Sumarlidason, A.; Gil, Y.; Ratnakar, V.; Krum, D.; Phan, T.; Meena, A.

    2013-12-01

    A plethora of open source technologies for manipulating, transforming, querying, and visualizing 'big data' have blossomed and matured in the last few years, driven in large part by recognition of the tremendous value that can be derived by leveraging data mining and visualization techniques on large data sets. One facet of many of these tools is that input data must often be prepared into a particular format (e.g.: JSON, CSV), or loaded into a particular storage technology (e.g.: HDFS) before analysis can take place. This process, commonly known as Extract-Transform-Load, or ETL, often involves multiple well-defined steps that must be executed in a particular order, and the approach taken for a particular data set is generally sensitive to the quantity and quality of the input data, as well as the structure and complexity of the desired output. When working with very large, heterogeneous, unstructured or semi-structured data sets, automating the ETL process and monitoring its progress becomes increasingly important. Apache Object Oriented Data Technology (OODT) provides a suite of complementary data management components called the Process Control System (PCS) that can be connected together to form flexible ETL pipelines as well as browser-based user interfaces for monitoring and control of ongoing operations. The lightweight, metadata driven middleware layer can be wrapped around custom ETL workflow steps, which themselves can be implemented in any language. Once configured, it facilitates communication between workflow steps and supports execution of ETL pipelines across a distributed cluster of compute resources. As participants in a DARPA-funded effort to develop open source tools for large-scale data analysis, we utilized Apache OODT to rapidly construct custom ETL pipelines for a variety of very large data sets to prepare them for analysis and visualization applications. We feel that OODT, which is free and open source software available through the Apache

  9. Analyzing delay causes in Egyptian construction projects

    Directory of Open Access Journals (Sweden)

    Mohamed M. Marzouk

    2014-01-01

    Full Text Available Construction delays are common problems in civil engineering projects in Egypt. These problems occur frequently during project life-time leading to disputes and litigation. Therefore, it is essential to study and analyze causes of construction delays. This research presents a list of construction delay causes retrieved from literature. The feedback of construction experts was obtained through interviews. Subsequently, a questionnaire survey was prepared. The questionnaire survey was distributed to thirty-three construction experts who represent owners, consultants, and contractor’s organizations. Frequency Index, Severity Index, and Importance Index are calculated and according to the highest values of them the top ten delay causes of construction projects in Egypt are determined. A case study is analyzed and compared to the most important delay causes in the research. Statistical analysis is carried out using analysis of variance ANOVA method to test delay causes, obtained from the survey. The test results reveal good correlation between groups while there is significant difference between them for some delay causes and finally roadmap for prioritizing delay causes groups is presented.

  10. Analyzing delay causes in Egyptian construction projects.

    Science.gov (United States)

    Marzouk, Mohamed M; El-Rasas, Tarek I

    2014-01-01

    Construction delays are common problems in civil engineering projects in Egypt. These problems occur frequently during project life-time leading to disputes and litigation. Therefore, it is essential to study and analyze causes of construction delays. This research presents a list of construction delay causes retrieved from literature. The feedback of construction experts was obtained through interviews. Subsequently, a questionnaire survey was prepared. The questionnaire survey was distributed to thirty-three construction experts who represent owners, consultants, and contractor's organizations. Frequency Index, Severity Index, and Importance Index are calculated and according to the highest values of them the top ten delay causes of construction projects in Egypt are determined. A case study is analyzed and compared to the most important delay causes in the research. Statistical analysis is carried out using analysis of variance ANOVA method to test delay causes, obtained from the survey. The test results reveal good correlation between groups while there is significant difference between them for some delay causes and finally roadmap for prioritizing delay causes groups is presented.

  11. TRIP RATES FOR CONDOMINIUM CONSTRUCTION PROJECT

    OpenAIRE

    Wirach Hirun

    2015-01-01

    The number of large scale condominium construction projects had dramatically increased in Bangkok. Many projects had occurred in either densely populated areas or in central business districts, where traffic conditions were usually highly congested. To prevent traffic problems, a traffic impact study must be prepared and submitted for review by concerned public authorities. Unit trip generation rates were important data in traffic impact analysis. Without accurate unit trip generation rates, ...

  12. Using the direct current voltage gradient technology as a quality control tool during construction of new pipelines

    CSIR Research Space (South Africa)

    Masilela, Z

    1998-06-01

    Full Text Available stream_source_info masilela_1998.pdf.txt stream_content_type text/plain stream_size 11826 Content-Encoding ISO-8859-1 stream_name masilela_1998.pdf.txt Content-Type text/plain; charset=ISO-8859-1 En`ineerin` Failure... used on new pipelines as a good quality control tool[ The bene_ts of using the DCVG technique on new pipelines is clearly evident as more than 79) of coating defects were a direct result of mechanical damage during construction[ On such evidence...

  13. Semantic-Discovery of Construction Project Files

    Institute of Scientific and Technical Information of China (English)

    PAN Jiayi; Chimay J. Anumba

    2008-01-01

    The dynamics of a construction project generates a huge amount of information for processing.Most project information is recorded in digital files and managed in a decentralized way. Current document management tools do not consider the semantic relationships between files and then cannot discover files based on their content or ensure information consistency across various information repositories. This paper presents a semantic-discovery method for accessing project information across repositories. By adopting semantic web technologies, including extensible markup language (XML), ontology, and logic rules, the se-mantic-discovery tool can access project files by their properties and relations. The method has been ap-plied to searching for files using documents from a real project. The results show that the semantic content of a file can be used to ensure that only related files are retrieved.

  14. A Case-Based System for Construction Project Risk Management

    Institute of Scientific and Technical Information of China (English)

    YANG Lan-rong; ZHANG Jin-long

    2002-01-01

    This paper presents a Case-Based system for assisting construction project managers in identifying risk factors and the corresponding construction project risk. The construction project risk identification model captures the case, acquired from previous completed construction projects and experience. A prototype is developed based on the proposed Case-Based system to determine risk factors along with their risk effects.

  15. Construction Cost Analysis : Residential Construction Demonstration Project Cycle II.

    Energy Technology Data Exchange (ETDEWEB)

    Barnett, Cole; Thor, Philip W.

    1990-06-01

    The Residential Construction Demonstration Project (RCDP) is designed to demonstrate new residential building techniques and product innovations which advance the stage-of-the-art in constructing energy-efficient electrically heated residences. A secondary purpose is to obtain documented cost and energy savings data from which to make accurate assessments of the cost-effectiveness of various conservation innovations. The project solicits participation of regional homebuilders by offering them financial incentives for constructing homes to the Model Conservation Standards (MCS) and including at least one innovation.'' The innovations are determined by BPA and the States prior to construction and represent construction techniques or energy saving products that might reduce the cost of building MCS homes, or expand the options available to builders in achieving MCS levels of energy efficiency in homes. Besides covering some of the additional risk for employing the innovation, the incentive payment guarantees that builders will provide certain amounts of information regarding the cost and acceptability of building the homes. In addition, an incentive is paid to homeowners for their participation in data collection efforts following construction. Several one-time'' tests were performed on the houses and homeowners were required to report energy consumption and temperature data on a weekly basis for approximately 18 months. BPA and the States compile the information obtained from the builders and homeowners. Access to this data is provided for the purpose of analyzing the cost and performance of the RCDP homes, as well as understanding the value of the various innovations that are tested. 25 tabs., 4 figs.

  16. Construction and assembly of the Urucu-Coari-Manaus gas pipeline; Construcao e montagem do gasoduto Urucu-Coari-Manaus

    Energy Technology Data Exchange (ETDEWEB)

    Gomes, Antonio E.; Sarno, Ruy [PETROBRAS S.A., Rio de Janeiro, RJ (Brazil)

    2005-07-01

    This paper aims to present the strategies adopted for the development of the construction and assembly of the Urucu-Coari-Manaus Gas Pipeline and its branches, emphasizing the logistics. With 662 km of extension and crossing 7 Amazonian counties, the construction of this pipeline will take in consideration particular aspects of the region (wavy relief, local population, Amazonian forest and diverse water bodies) and its interference in the works, mainly transport of workers and equipment, distribution of supplying points of fuels and foods, and localization of support work sites. Considering the importance of the region watercourses, techniques for its passages were studied, on a case by case basis and the conventional process, directional drilling and special launching for the passage of the Black river have been adopted. Moreover, this paper presents the activities summary of both environmental licensing process and pre communication related to the communities directly affected by the works, aiming at the beginning of the services of construction and assembly, as well as a story brief of the experiences gathered during the construction of the Poliduto and the Urucu-Coari Gas Pipeline, both constructed between the years of 1997 and 1999. (author)

  17. Protecting a pipeline

    Energy Technology Data Exchange (ETDEWEB)

    Gray, D.H (Univ. of Michigan, Ann Arbor, MI (United States)); Garcia-Lopez, M. (Ingenieria y Geotecnia Ltda., Santafe de Bogota (Colombia))

    1994-12-01

    This article describes some of the difficulties in constructing an oil pipeline in Colombia across a forested mountain range that has erosion-prone slopes. Engineers are finding ways to protect the pipeline against slope failures and severe erosion problems while contending with threats of guerrilla attacks. Torrential rainfall, precipitous slopes, unstable soils, unfavorable geology and difficult access make construction of an oil pipeline in Colombia a formidable undertaking. Add the threat of guerrilla attacks, and the project takes on a new dimension. In the country's central uplands, a 76 cm pipeline traverses some of the most daunting and formidable terrain in the world. The right-of-way crosses rugged mountains with vertical elevations ranging from 300 m to 2,000 mm above sea level over a distance of some 30 km. The pipeline snakes up and down steep forested inclines in some spots and crosses streams and faults in others, carrying the country's major export--petroleum--from the Cusiana oil field, located in Colombia's lowland interior, to the coast.

  18. Waste management plan for pipeline construction works: basic guideline for its preparation

    Energy Technology Data Exchange (ETDEWEB)

    Serricchio, Claudio; Caldas, Flaviana V. [Petroleo Brasileiro S.A. (PETROBRAS), Rio de Janeiro, RJ (Brazil); Souza, Izabel C.A. de; Araujo, Ronaldo G. de [TELSAN, Rio de Janeiro, RJ (Brazil); Souza, Tania Mara [IMC-SASTE, Sao Paulo,SP (Brazil); Veronez, Fernanda A. [Bourscheid, Porto Alegre, RS (Brazil)

    2009-07-01

    During the stage of implementation of the land pipes enterprise, one of the main environmental aspects to be considered was the creation of solid and liquid waste. To mitigate the possible impacts to the environment, the main adopted mitigate measure was the implementation of a Waste Management Plan - WMP. Thus, the management of waste from pipes construction has the challenge of a great variety of stages and phases for the implementation of pipes and the diversity of local situations related to the topographic and hydro-geologic conditions. Considering the peculiarity of the pipes activities, this article proposes the elaboration of a Basic Guide to be used as reference for the creation of WMP's for similar enterprises, using as foundation the data from the three Gas Pipelines: Cabiunas - Vitoria; Vitoria - Cacimbas and Cacimbas - Catu. After the analysis of the three mentioned enterprises, it was verified that the waste management generated on the building and assembling of the land pipes normally occurs in accord with previous planning, but there's no systematization for the waste to be better recycled and reutilized, thus mitigating their creation. (author)

  19. 77 FR 48145 - Cameron Interstate Pipeline, LLC, Cameron LNG, LLC; Notice of Intent To Prepare an Environmental...

    Science.gov (United States)

    2012-08-13

    ... Energy Regulatory Commission Cameron Interstate Pipeline, LLC, Cameron LNG, LLC; Notice of Intent To Prepare an Environmental Impact Statement for the Planned Cameron Pipeline Expansion Project and Cameron... from the construction and operation of the Cameron Pipeline Expansion Project and the Cameron Liquefied...

  20. 75 FR 51033 - ETC Tiger Pipeline, LLC; Notice of Intent To Prepare an Environmental Assessment for the Proposed...

    Science.gov (United States)

    2010-08-18

    ... Energy Regulatory Commission ETC Tiger Pipeline, LLC; Notice of Intent To Prepare an Environmental Assessment for the Proposed ETC Tiger Pipeline Expansion Project--Phase I and Request for Comments on... Tiger Pipeline Expansion Project--Phase I, involving construction and operation of facilities by...

  1. Is Agile Project Management Applicable to Construction?

    OpenAIRE

    Owen, R.; Koskela, LJ; Henrich, G; Codinhoto, R

    2006-01-01

    This paper briefly summarises the evolution of Agile Project Management (APM) and differentiates it from lean and agile production and ‘leagile’ construction. The significant benefits being realized through employment of APM within the information systems industry are stated. The characteristics of APM are explored, including: philosophy, organizational attitudes and practices, planning, execution and control and learning. Finally, APM is subjectively assessed as to its potential contribution...

  2. Factors Affecting Construction Cost in Mara Large Construction Project: Perspective of Project Management Consultant

    Directory of Open Access Journals (Sweden)

    Aftab Hameed Memon

    2011-07-01

    Full Text Available Project cost is one of the most important criteria of success of project and is of high concern to those who are involved in the construction industry. However, studies show that rarely projects are complete within stipulated budget. This study is focusing on identification of significant causes affecting construction cost in MARA large projects. This paper presents the results of a questionnaire survey conducted among the personnel of Project Management Consultant (PMC. Data was analyzed with statistical tools to determine the rank of factors affecting construction cost. It is concluded that cash flow and financial difficulties faced by contractors, contractor's poor site management and supervision, inadequate contractor experience, shortage of site workers, incorrect planning and scheduling by contractors are most severe factors while changes in scope of project and frequent design changes are least affecting factors on construction cost. Spearman correlation analysis showed that incorrect planning and scheduling by contractor has strong positive relationship with contractor’s poor site management and supervision, inadequate experience of contractors has strong positive relationship with incorrect planning and scheduling; and contractor’s poor site management and supervision, changes in scope of project has strong positive relationship with frequent design changes; and vice versa.

  3. Portfolio management for investment projects in the construction industry

    National Research Council Canada - National Science Library

    Kozlov Alexander; Shnyrenkov Evgeny

    2017-01-01

    .... Project management methodologies need further improvement, including development of portfolio management processes applicable to investment projects developed and implemented in the construction industry...

  4. Delays in Building Construction Projects in Ghana

    Directory of Open Access Journals (Sweden)

    Adwoa B Agyakwah-Baah

    2010-07-01

    Full Text Available This study investigates the causes of delay of building construction projects in Ghana to determine the most important according to the key project participants; clients, consultants, and contractors. Thirty-two possible causes of delay were identified from the literature and semi-structured interviews of 15 key players in the implementation process. These delay factors were further categorised into nine major groups. The list of delay causes was subjected to a questionnaire survey for the identification of the most important causes of delay. The field survey included 130 respondents made up of 39 contractors, 37 clients and 54 consultants. The relative importance of the individual causes and the groups were calculated and ranked by their relative importance index. The overall results of the study indicate that the respondents generally agree that financial group factors ranked highest among the major factors causing delay in construction projects in Ghana. The financial group factors were delay in honouring payment certificates, difficulty in accessing credit and fluctuation in prices. Materials group factors are second followed by scheduling and controlling factors.

  5. China Oil & Gas Pipeline Survey & Design Institute, Pipeline

    Institute of Scientific and Technical Information of China (English)

    Bureau of CNPC; Zhao Surong

    1995-01-01

    @@ China Oil/Gas Pipeline Bureau(P.B) is the only professional organization in China specialized in oil/gas pipelines design and construction since 1980s. It has ever cooperated with certain number of well known companies from Japan,USA, Germany, Canada, as well as Italy in the designs of many large oil/gas pipeline projects, during the course of which, personnel from P.B accumulated much experience in international project designs. During the execution of each particular project, they strictly followed the common-use international codes and standards with computers as the auxiliary design system combined with the self-developed software. All its clients showed their trust in this organization and gave it high praise for its outstanding survey, design and technical service.

  6. Overview of the design, construction, and operation of interstate liquid petroleum pipelines.

    Energy Technology Data Exchange (ETDEWEB)

    Pharris, T. C.; Kolpa, R. L.

    2008-01-31

    The U.S. liquid petroleum pipeline industry is large, diverse, and vital to the nation's economy. Comprised of approximately 200,000 miles of pipe in all fifty states, liquid petroleum pipelines carried more than 40 million barrels per day, or 4 trillion barrel-miles, of crude oil and refined products during 2001. That represents about 17% of all freight transported in the United States, yet the cost of doing so amounted to only 2% of the nation's freight bill. Approximately 66% of domestic petroleum transport (by ton-mile) occurs by pipeline, with marine movements accounting for 28% and rail and truck transport making up the balance. In 2004, the movement of crude petroleum by domestic federally regulated pipelines amounted to 599.6 billion tonmiles, while that of petroleum products amounted to 315.9 billion ton-miles (AOPL 2006). As an illustration of the low cost of pipeline transportation, the cost to move a barrel of gasoline from Houston, Texas, to New York Harbor is only 3 cents per gallon, which is a small fraction of the cost of gasoline to consumers. Pipelines may be small or large, up to 48 inches in diameter. Nearly all of the mainline pipe is buried, but other pipeline components such as pump stations are above ground. Some lines are as short as a mile, while others may extend 1,000 miles or more. Some are very simple, connecting a single source to a single destination, while others are very complex, having many sources, destinations, and interconnections. Many pipelines cross one or more state boundaries (interstate), while some are located within a single state (intrastate), and still others operate on the Outer Continental Shelf and may or may not extend into one or more states. U.S. pipelines are located in coastal plains, deserts, Arctic tundra, mountains, and more than a mile beneath the water's surface of the Gulf of Mexico (Rabinow 2004; AOPL 2006). The network of crude oil pipelines in the United States is extensive. There are

  7. Commutative algebra constructive methods finite projective modules

    CERN Document Server

    Lombardi, Henri

    2015-01-01

    Translated from the popular French edition, this book offers a detailed introduction to various basic concepts, methods, principles, and results of commutative algebra. It takes a constructive viewpoint in commutative algebra and studies algorithmic approaches alongside several abstract classical theories. Indeed, it revisits these traditional topics with a new and simplifying manner, making the subject both accessible and innovative. The algorithmic aspects of such naturally abstract topics as Galois theory, Dedekind rings, Prüfer rings, finitely generated projective modules, dimension theory of commutative rings, and others in the current treatise, are all analysed in the spirit of the great developers of constructive algebra in the nineteenth century. This updated and revised edition contains over 350 well-arranged exercises, together with their helpful hints for solution. A basic knowledge of linear algebra, group theory, elementary number theory as well as the fundamentals of ring and module theory is r...

  8. TRIP RATES FOR CONDOMINIUM CONSTRUCTION PROJECT

    Directory of Open Access Journals (Sweden)

    Wirach Hirun

    2015-01-01

    Full Text Available The number of large scale condominium construction projects had dramatically increased in Bangkok. Many projects had occurred in either densely populated areas or in central business districts, where traffic conditions were usually highly congested. To prevent traffic problems, a traffic impact study must be prepared and submitted for review by concerned public authorities. Unit trip generation rates were important data in traffic impact analysis. Without accurate unit trip generation rates, public agencies could not obtain accurate information on the traffic that will be generated. This study aimed to study trip rates and the factors affecting them for condominium construction project in Bangkok. The data were collected from 30 condominium construction sites located in 15 districts of Bangkok. The analysis used the linear regression method and was divided into three cases: 1 trip rates for all vehicles, 2 trip rates for classified vehicles, and 3 trip rates for all types of condominium. All case analyses considered weekdays, Saturday, and Sunday. The results found that trip rates related to the number of dwellings in the condominium. The trip rates for all vehicle types on weekdays, Saturday, and Sunday were 10.636, 4.647, and 9.294 vehicles per 100 dwelling units per day respectively. The trip rates for six-wheeled and ten-wheeled trucks on weekdays, Saturday, and Sunday were 2.046, 0.975, and 0.575 vehicles per 100 dwelling units per day respectively. The trip rate for four-wheeled trucks and passenger cars on weekdays was 1.960. Regarding condominium types, the trip rate for low rise condominiums for all vehicle types on weekdays was 5.315 while the trip rates for high rise condominiums for weekdays, Saturday, and Sunday were 3.965, 2.667, and 1.261 respectively.

  9. Construction Managers’ Perception of the Factors Affecting Sustainability in Construction Projects

    Directory of Open Access Journals (Sweden)

    Reza Taheriattar

    2014-07-01

    Full Text Available Sustainable construction is a comprehensive concept which requires long-term planning. Moreover, construction managers play a key role in leading, planning and scheduling of a construction project. As a result, sustainability of construction projects can be affected by construction managers’ decisions. In addition, for greater development of sustainable construction, affecting factors should firstly be notified. Therefore, it seems necessary to investigate construction managers’ perception of the factors affecting sustainability in construction projects. To quantify managers’ perspective of construction sustainability, a survey involving 15 construction managers from Iran construction industry was employed. A statistical comparative analysis used to identify the most important factors affecting sustainability performance at project-level. The results show that most of the factors affecting sustainable construction can be addressed by management teams. The findings will be useful for managers to improve construction sustainability performance at project-level.

  10. Application of Dry Air Drying Techniques on West-East Gas Pipeline Project

    Institute of Scientific and Technical Information of China (English)

    GaoJianguo; XieLigong; DaiZongyu

    2004-01-01

    Based on the pre-eommissioning requirements of gas pipeline, the basic principles and influential factors of dry air drying adopted in long distance gas pipelines, and states in detail the technological flow and the equipment required, etc. are introduced, which will have practical significance in drying operation on gas pipeline.

  11. 75 FR 74697 - Questar Pipeline Company; Notice of Application

    Science.gov (United States)

    2010-12-01

    ... public convenience to construct and operate 24.6 miles of 24-inch diameter pipeline and related facilities in Uintah County, Utah (the Mainline 104 Extension Project), all as more fully set forth in...

  12. External coatings for buried pipelines - a project approach; Revestimento externo para dutos enterrados - uma abordagem de projeto

    Energy Technology Data Exchange (ETDEWEB)

    Nunes, Laerce de P.; Gomes, Luiz Paulo; Nunes, Alessandra de M. [IEC - Instalacoes e Engenharia de Corrosao Ltda., Rio de Janeiro, RJ (Brazil)

    2005-07-01

    The transport of liquid or gas fluids, such as water, fuel, chemical products, minerals, among others, through underground pipelines, is becoming more significant in the whole world, specially in Brazil, due to low cost, operational security and low physical interference at the surface. By the other hand, the ambient matters, the population's security in pipeline tracing and economic aspects lead to greater requirements in relation to the integrity of those installations. Corrosion is one of the most important causes of underground pipelines' deterioration and coating and cathodic protection are recommended to prevent it from occurring. However, both techniques must be considered in the pipeline project for it to be successful. At the present work the most important kinds of coating for underground pipelines are presented, as well as the applications, limitations, reference norms and the interface with the cathodic protection systems in relation to the efficiencies to be adopted and the expected performance. Is it also discussed the welded piping joints confection and the protection difficulties when the efficiencies are not corresponded to those foreseen in the cathodic protection systems project. (author)

  13. The construction project manager in South Africa: Analysis of ...

    African Journals Online (AJOL)

    Industry-specific guidelines for construction project management (PMBOK and ... was essential for effective leadership, trust and communication within a project. ... factors were compromised and project success could be negatively affected.

  14. Research and Development of X70 with an Acicular Ferrite Microstructure for West-East Pipeline Project

    Institute of Scientific and Technical Information of China (English)

    ZhengLei; GaoShan

    2004-01-01

    It is introduced in this paper that a high strength and high toughness X70 pipeline steel with an ultra-low acicular ferrite microstructure has been researched and developed at Baosteel according to the requirements of the West-East Gas Pipeline(WEGTP) project. The developed steel has higher strength, higher toughness, lower ductile-brittle transition temperature and higher dynamic tear-resistance than the conventional X70 with ferrite and pearlite microstructure. The excellent properties of the steel are benefited from ultralow carbon acicular ferrite consisting of interaction of very fine precipitated particles and high-density dislocation. And the steel has been applied on the WEGTP in China.

  15. The construction technology of outdoor drainage pipeline installation in residential district%住宅小区室外排水管道安装施工技术

    Institute of Scientific and Technical Information of China (English)

    何向利

    2016-01-01

    介绍了住宅小区室外排水管道常见的问题,从施工放线、管沟开挖、标高测量、管道安装等方面,阐述了住宅小区室外排水管道安装施工的技术要点,有助于避免排水管道质量问题的发生。%This paper introduced the common problem of outdoor drainage pipeline in residential district,from the construction line,pipe trench excavation,elevation measurement,pipeline installation and other aspects,elaborated the technique key points of outdoor drainage pipeline in-stallation construction in residential district,to avoid the occurrence of drainage pipeline quality problems.

  16. a Smartphone-Based 3d Pipeline for the Creative Industry - the Replicate EU Project

    Science.gov (United States)

    Nocerino, E.; Lago, F.; Morabito, D.; Remondino, F.; Porzi, L.; Poiesi, F.; Rota Bulo, S.; Chippendale, P.; Locher, A.; Havlena, M.; Van Gool, L.; Eder, M.; Fötschl, A.; Hilsmann, A.; Kausch, L.; Eisert, P.

    2017-02-01

    During the last two decades we have witnessed great improvements in ICT hardware and software technologies. Three-dimensional content is starting to become commonplace now in many applications. Although for many years 3D technologies have been used in the generation of assets by researchers and experts, nowadays these tools are starting to become commercially available to every citizen. This is especially the case for smartphones, that are powerful enough and sufficiently widespread to perform a huge variety of activities (e.g. paying, calling, communication, photography, navigation, localization, etc.), including just very recently the possibility of running 3D reconstruction pipelines. The REPLICATE project is tackling this particular issue, and it has an ambitious vision to enable ubiquitous 3D creativity via the development of tools for mobile 3D-assets generation on smartphones/tablets. This article presents the REPLICATE project's concept and some of the ongoing activities, with particular attention being paid to advances made in the first year of work. Thus the article focuses on the system architecture definition, selection of optimal frames for 3D cloud reconstruction, automated generation of sparse and dense point clouds, mesh modelling techniques and post-processing actions. Experiments so far were concentrated on indoor objects and some simple heritage artefacts, however, in the long term we will be targeting a larger variety of scenarios and communities.

  17. The application of the environmental and social standards (safeguard policies) of the World Bank to pipeline projects

    Energy Technology Data Exchange (ETDEWEB)

    Nickel, E. [Elke Nickel Consultant, Leipzig (Germany); Robelus, R. [World Bank, Washington, DC (United States)

    2004-07-01

    In 1998, the World Bank applied environmental and social standards in connection with dam and pipeline projects. Their position on international lending was consolidated by the strict application of safeguard policies. This paper focused on the use of safeguard policies in pipeline projects during the planning and implementation phases. The standards have been analyzed according to the role of safeguard policies in the examination for credit rating; the structure and nature of the safeguard policies; and, new trends in the application of standards. The example of the Baku-Tiblisi-Ceyhan oil pipeline was presented along with the requirements established under the World Bank Operational Directive (OP) 4.01 on environmental assessment. In 2003, the largest internationally active commercial banks voluntarily complied with the World Bank standards in major projects. The safeguard policies of the World Bank refer to standards which are the foundation for environmental and ecological risk assessment in the context of credit-rating reviews. Although the safeguard policies were modeled largely on the specifications of the United States Environmental Protection Act, they requires consideration of the national legislation of the host country, and ratified international environmental agreements. The following elements compose the development of a financing model for credit rating review: internal check of the pipeline project; discussion of the project outline with financing institutions; execution of feasibility studies; project-preparatory phase; and, conclusion of contracts. The safeguards include procedural and qualitative guidelines for environmental assessment, natural habitats, pest management, cultural property, indigenous people, involuntary resettlement, forestry, dam safety, international waterways, disputed areas, and information disclosure. 8 refs., 1 tab., 3 figs.

  18. Leveraging Text Content for Management of Construction Project Documents

    Science.gov (United States)

    Alqady, Mohammed

    2012-01-01

    The construction industry is a knowledge intensive industry. Thousands of documents are generated by construction projects. Documents, as information carriers, must be managed effectively to ensure successful project management. The fact that a single project can produce thousands of documents and that a lot of the documents are generated in a…

  19. 地铁施工邻近管线安全风险评估研究%Safety Risk Assessment for Adjacent Underground Pipelines in Metro Construction

    Institute of Scientific and Technical Information of China (English)

    高丙丽; 任建喜

    2016-01-01

    Considering that metro construction may cause damage to adjacent underground pipelines and using the construction of Xi′an Metro Line 3 as an example, this paper determines the main modes of pipeline damage through a field investigation. The main influential factors for pipeline deformation (e.g., engineering geology, hydrogeology, distance between the tunnel and pipeline, tunnel construction and pipeline characteristics) and the secondary fac⁃tors (e.g., horizontal/vertical distance between two pipelines, construction method, pipeline size, pressure in the pipe⁃line, burial depth of the pipeline, pipeline joint type, angle between the pipeline and tunnel) are determined based on expert investigation. The risk grades of different pipelines and the corresponding protection measures are deter⁃mined by adopting a fuzzy comprehensive evaluation and a relevant risk assessment system is established for pipe⁃line safety.%地铁施工造成的邻近管线危害及其保护是一个重要问题。文章以西安地铁3号线为工程背景,采用现场调查法得到了地下管线因地铁施工而产生的主要破坏形式;基于专家调查法得出地铁施工对邻近管线变形的一级影响因素主要有:工程地质与水文地质因素、管隧距离、施工因素和管线特性;二级影响因素主要有:管线水平距离、管线垂直距离、施工方法、管线大小、管内压力、管线埋深、管线接头形式、管线与隧道角度等;基于模糊综合评判法确定了不同管线的风险等级,给出了不同安全风险等级的管线保护措施,建立了地铁施工邻近管线安全风险评估体系,为管线安全管理控制提供了可靠依据。

  20. A proposed model for construction project management ...

    African Journals Online (AJOL)

    The lack of a proper communication skills model for project management may ... done to identify the most important project management communication skills and applications of communication that effective project managers should possess.

  1. Discussion on construction technology points of municipal road drainage pipeline%谈市政道路排水管道施工技术要点

    Institute of Scientific and Technical Information of China (English)

    张密兰

    2016-01-01

    The thesis analyzes problems existing in municipal road drainage pipeline construction. Starting from aspects of filed survey, route ex-cavation, sampling technology, pipeline installation and pavement restoration, it describes construction technology points of municipal road drain-age pipeline, with a view to improve domestic city road construction efficiency and quality.%分析了市政道路排水管道施工中存在的问题,从现场勘察、线路开挖、放线技术、管道安装、路面恢复等方面,阐述了市政道路排水管道施工的技术要点,以提高我国城市道路的建设效率和质量。

  2. Impact of Construction Health & Safety Regulations on Project ...

    African Journals Online (AJOL)

    Impact of Construction Health & Safety Regulations on Project Parameters in ... This paper seeks to assess the views of consultants and contractors about the impact ... than the traditional project parameters in the form of cost, time and quality.

  3. 40 CFR 40.145-3 - Projects involving construction.

    Science.gov (United States)

    2010-07-01

    ... adequate engineering supervision and inspection for the project to insure that the construction conforms... the United States, or any authorized representative shall have access to any books, documents,...

  4. A Pipeline for Constructing a Catalog of Multi-method Models of Interacting Galaxies

    Science.gov (United States)

    Holincheck, Anthony

    Galaxies represent a fundamental unit of matter for describing the large-scale structure of the universe. One of the major processes affecting the formation and evolution of galaxies are mutual interactions. These interactions can including gravitational tidal distortion, mass transfer, and even mergers. In any hierarchical model, mergers are the key mechanism in galaxy formation and evolution. Computer simulations of interacting galaxies have evolved in the last four decades from simple restricted three-body algorithms to full n-body gravity models. These codes often included sophisticated physical mechanisms such as gas dynamics, supernova feedback, and central blackholes. As the level of complexity, and perhaps realism, increases so does the amount of computational resources needed. These advanced simulations are often used in parameter studies of interactions. They are usually only employed in an ad hoc fashion to recreate the dynamical history of specific sets of interacting galaxies. These specific models are often created with only a few dozen or at most few hundred sets of simulation parameters being attempted. This dissertation presents a prototype pipeline for modeling specific pairs of interacting galaxies in bulk. The process begins with a simple image of the current disturbed morphology and an estimate of distance to the system and mass of the galaxies. With the use of an updated restricted three-body simulation code and the help of Citizen Scientists, the pipeline is able to sample hundreds of thousands of points in parameter space for each system. Through the use of a convenient interface and innovative scoring algorithm, the pipeline aids researchers in identifying the best set of simulation parameters. This dissertation demonstrates a successful recreation of the disturbed morphologies of 62 pairs of interacting galaxies. The pipeline also provides for examining the level of convergence and uniqueness of the dynamical properties of each system. By

  5. A Design Methodology for Folded, Pipelined Architectures in VLSI Applications using Projective Space Lattices

    CERN Document Server

    Sharma, Hrishikesh

    2011-01-01

    Semi-parallel, or folded, VLSI architectures are used whenever hardware resources need to be saved at design time. Most recent applications that are based on Projective Geometry (PG) based balanced bipartite graph also fall in this category. In this paper, we provide a high-level, top-down design methodology to design optimal semi-parallel architectures for applications, whose Data Flow Graph (DFG) is based on PG bipartite graph. Such applications have been found e.g. in error-control coding and matrix computations. Unlike many other folding schemes, the topology of connections between physical elements does not change in this methodology. Another advantage is the ease of implementation. To lessen the throughput loss due to folding, we also incorporate a pipelining strategy in the design methodology. A complete decoder has been prototyped for proof of concept, and is publicly available. Another specific high-performance design of an LDPC decoder based on this methodology was worked out in past, and has been p...

  6. Tools and techniques for schedule's controlling: tracking system and control of Urucu-Manaus gas-pipeline construction, stretch B1

    Energy Technology Data Exchange (ETDEWEB)

    Zuany, Valdenise Marques; Dias, Jose Luiz Gomes [CONCREMAT Engenharia e Tecnologia S/A, Rio de Janeiro, RJ (Brazil)

    2009-07-01

    The goal is to show the monitoring systems and deadline control, using the PMBOK{sup R} project management tools, in the Construction and Assembly of the Coari-Manaus Gas-pipeline, stretch B1, which includes the cities of Coari, Codajas, Anori and Anama, in the state of Amazon, in the Northern Undertaking Implementation (IENOR), an Engineering division of the PETROBRAS System. This report presents the practical effects of the usage of three schedule control tools of the project: Performance Measurement, using the technique of the Earned Value Management (EVM), which integrates cost, schedule and physical progress of the enterprise to determine the variations of schedule and performance; Project Management Software, MSProject, which allows schedule's elaboration and makes the tracking of the planned dates possible (baseline) in relation to real dates and forecasts the trend level, the effects of changes in the project's schedule, demonstrating its utility as a schedule control tool; and Schedule Variance Analysis, which adopts practical data to reach the pessimistic, most likely and optimistic expectations. The implantation of these tools was based in the Work Breakdown Structure of the enterprise. The application of these three tools in the tracking and control of the enterprise demonstrates that, the use of information and techniques deriving from the planning and control can be an important support for project management and decision taking, comparing the results gotten in the implantation of the plan with its actual realization, defining, thus, the necessary corrective actions, generating learned lessons to use in future projects. (author)

  7. A New Opportunity Facing the Pipeline Sector

    Institute of Scientific and Technical Information of China (English)

    Yao Changpu

    2001-01-01

    @@ According to the State and CNPC programs for development,the nation's oil/gas pipeline sector is faced with an unprecedented historic opportunity, about to enter its golden period of development.The three major pipelines () SeNing-Lan (from Sebei of Qinghai Province to Lanzhou by way of Xining) for natural gas, LanCheng-Yu (from Lanzhou to Chengdu extending to Chongqing) for finished oils, and Zhong-Wu (from Zhongxian County of Chongqing to Wuhan)for natural gas, either under construction or planned to be constructed, have all been listed as the national priority projects of infrastructure construction. And the double-line project of the existing Shaan-Jing (Shaanxi Province to Beijing) gas pipeline has finished the procedure for establishment.

  8. Project control integrating cost and schedule in construction

    CERN Document Server

    Del Pico, Wayne J

    2013-01-01

    The key to successful project control is the fusing of cost to schedule whereby the management of one helps to manage the other. Project Control: Integrating Cost and Schedule in Construction explores the reasons behind and the methodologies for proper planning, monitoring, and controlling both project costs and schedule. Filling a current void the topic of project control applied to the construction industry, it is essential reading for students and professionals alike.

  9. Fuzzy based risk register for construction project risk assessment

    Science.gov (United States)

    Kuchta, Dorota; Ptaszyńska, Ewa

    2017-07-01

    The paper contains fuzzy based risk register used to identify risks which appear in construction projects and to assess their attributes. Risk is considered here as a possible event with negative consequences for the project [4]. We use different risk attributes in the proposed risk register. Values of risk attributes are generated by using fuzzy numbers. Specific risk attributes have different importance for project managers of construction projects. To compare specific risk attributes we use methods of fuzzy numbers ranking. The main strengths of the proposed concept in managing construction projects are also presented in the paper.

  10. [Principles and methodology for ecological rehabilitation and security pattern design in key project construction].

    Science.gov (United States)

    Chen, Li-Ding; Lu, Yi-He; Tian, Hui-Ying; Shi, Qian

    2007-03-01

    Global ecological security becomes increasingly important with the intensive human activities. The function of ecological security is influenced by human activities, and in return, the efficiency of human activities will also be affected by the patterns of regional ecological security. Since the 1990s, China has initiated the construction of key projects "Yangtze Three Gorges Dam", "Qinghai-Tibet Railway", "West-to-East Gas Pipeline", "West-to-East Electricity Transmission" and "South-to-North Water Transfer" , etc. The interaction between these projects and regional ecological security has particularly attracted the attention of Chinese government. It is not only important for the regional environmental protection, but also of significance for the smoothly implementation of various projects aimed to develop an ecological rehabilitation system and to design a regional ecological security pattern. This paper made a systematic analysis on the types and characteristics of key project construction and their effects on the environment, and on the basis of this, brought forward the basic principles and methodology for ecological rehabilitation and security pattern design in this construction. It was considered that the following issues should be addressed in the implementation of a key project: 1) analysis and evaluation of current regional ecological environment, 2) evaluation of anthropogenic disturbances and their ecological risk, 3) regional ecological rehabilitation and security pattern design, 4) scenario analysis of environmental benefits of regional ecological security pattern, 5) re-optimization of regional ecological system framework, and 6) establishment of regional ecosystem management plan.

  11. 4D reconstruction of the past: the image retrieval and 3D model construction pipeline

    Science.gov (United States)

    Hadjiprocopis, Andreas; Ioannides, Marinos; Wenzel, Konrad; Rothermel, Mathias; Johnsons, Paul S.; Fritsch, Dieter; Doulamis, Anastasios; Protopapadakis, Eftychios; Kyriakaki, Georgia; Makantasis, Kostas; Weinlinger, Guenther; Klein, Michael; Fellner, Dieter; Stork, Andre; Santos, Pedro

    2014-08-01

    One of the main characteristics of the Internet era we are living in, is the free and online availability of a huge amount of data. This data is of varied reliability and accuracy and exists in various forms and formats. Often, it is cross-referenced and linked to other data, forming a nexus of text, images, animation and audio enabled by hypertext and, recently, by the Web3.0 standard. Our main goal is to enable historians, architects, archaeolo- gists, urban planners and affiliated professionals to reconstruct views of historical monuments from thousands of images floating around the web. This paper aims to provide an update of our progress in designing and imple- menting a pipeline for searching, filtering and retrieving photographs from Open Access Image Repositories and social media sites and using these images to build accurate 3D models of archaeological monuments as well as enriching multimedia of cultural / archaeological interest with metadata and harvesting the end products to EU- ROPEANA. We provide details of how our implemented software searches and retrieves images of archaeological sites from Flickr and Picasa repositories as well as strategies on how to filter the results, on two levels; a) based on their built-in metadata including geo-location information and b) based on image processing and clustering techniques. We also describe our implementation of a Structure from Motion pipeline designed for producing 3D models using the large collection of 2D input images (>1000) retrieved from Internet Repositories.

  12. Risks Associated with Federal Construction Projects

    Science.gov (United States)

    2011-06-01

    Practices Act. Areas of Application. Existing research shows that risk in contract cover a wide range of application in construction. Erikson ...Year) Area of Application Synopsis Erikson and O’Connor (1979) Firm fixed-price construction contracts Determined the cost effects of varying risk...2001, Erikson , C. A. & O’Connor, M. J. (1979). Construction Contract Risk Assignment, Technical Report P-101, Report No. CERL-TR-P-101, Construction

  13. Ecological effects of pipeline construction through deciduous forested wetlands, Midland County, Michigan. Topical report, October 1990--August 1992

    Energy Technology Data Exchange (ETDEWEB)

    Rastorfer, J.R. [Chicago State Univ., IL (United States). Dept. of Biological Sciences; Van Dyke, G.D.; Zellmer, S.D.; Wilkey, P.L. [Argonne National Lab., IL (United States)

    1995-04-01

    This study is designed to record vegetational changes induced by the construction of a large-diameter gas pipeline through deciduous forested wetlands. Two second-growth wetland sites mapped Lenawee soils were selected in Midland County, Michigan: Site 1, a younger stand subjected to recent selective logging, and Site 2, a more mature stand. The collection of ecological data to analyze plant succession on the right-of-way (ROW) and the effects of the developing ROW plant communities on adjacent forest communities was initiated in 1989. Cover class estimates were made for understory and ROW plant species on the basis of 1 {times} 1{minus}m quadrats. Individual stem diameters and species counts were recorded for overstory plants in 10{minus}m quadrats. Although long-term studies have not been completed, firm baseline data were established for comparative analyses with future sampling. Current data indicate that vegetation became well-established on the ROW within one year and subsequently increased in coverage. About 65% of the species were wetland indicators, and the dominants included seeded and natural invading species; nevertheless, some elements of the original flora regenerated and persist. The plants of the ecotone understories of both sites changed from their original composition as a result of the installation of the gas pipeline. Although some forest species persist at both sites, the ecotone of Site I was influenced more by the seeded species, whereas the natural invaders were more important at Site 2.

  14. Development of Earned Value Management System in PP Construction Project

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Sang-Hyun; Moon, Byeong-Suk [KHNP-CRI, Daejeon (Korea, Republic of)

    2014-10-15

    The NPP construction project has been determined in the form of a rather lump-sum contract with little details in resource requirements and estimations. Therefore, Earned Value Management System (EVMS) needs to be applied to the NPP projects in order to incorporate scope, schedule and cost targeting efficient and to control effective resource. The NPP projects in Korea have not applied EVMS. EVMS has phased in NPP construction project by Korea Hydro and Nuclear Power Co., Ltd (KHNP), playing the role of project master manager in NPP construction in Korea. This study presented the EVMS unlike other system. Accordingly, EVMS is expected to reduce risks and increase efficiency in the NPP project. The NPP construction project is a technology ntensive multi-construction project that should be based on economics and stability and that takes over ten years to complete, requiring investment of billions of dollars, a great number of persons concerned, and a vast store of human and material resources. KHNP is phasing EVMS in NPP construction project for overseas contracts and the efficient management, the paper presented the pilot EVMS in KHNP. It expected to control and identify of NPP construction projects by using EVMS as a computerized management tool which is quantitative and objective management criteria. It is necessary to improve of the contract system related EVM for enterprise system, and the effort will be required, such as on-site support and training so that this can be done in collaboration with the relevant stakeholders.

  15. Quality Management System at Construction Project: A Questionnaire Survey

    Directory of Open Access Journals (Sweden)

    P.P.Mane

    2015-03-01

    Full Text Available The best quality, time and cost are the important aspects of successful construction project which fulfills the main goal of construction industry. The quality management has to provide the environment within which related tools, techniques and procedures can be deployed effectively leading to operational success for a construction project. The role of quality management for a construction company is not an isolated activity, but intertwined with all the operational and managerial processes of the construction project. The quality management system (QMS in construction industry refers to quality planning, quality assurance and quality control. The paper includes the outcome of the research methodology decided by authors based on interview of project participants and analysis of scrutinized interview data.

  16. Wartime Construction Project Outcomes as a Function of Contract Type

    Science.gov (United States)

    2016-07-01

    Deegan, Freeman, & Sargand, 2011; cf. Tawazuh Commercial and Construction Co. Ltd. v. United States, 2011), a remote and problematic supply chain ...the firm-fixed-price (FFP) norm. Using a dataset of 25 wartime construction projects managed by the Air Force Civil Engineer Center, the authors...projects in wartime environments. Keywords: firm-fixed-price, cost-plus-fixed-fee, Afghanistan, construction management , contract structure 332 Defense ARJ

  17. Construction project investment control model based on instant information

    Institute of Scientific and Technical Information of China (English)

    WANG Xue-tong

    2006-01-01

    Change of construction conditions always influences project investment by causing the loss of construction work time and extending the duration. To resolve such problem as difficult dynamic control in work construction plan, this article presents a concept of instant optimization by ways of adjustment operation time of each working procedure to minimize investment change. Based on this concept, its mathematical model is established and a strict mathematical justification is performed. An instant optimization model takes advantage of instant information in the construction process to duly complete adjustment of construction; thus we maximize cost efficiency of project investment.

  18. Construction Project Forecasting "Practical Use of EV Metrics"

    Institute of Scientific and Technical Information of China (English)

    Reda Abbas Sabry

    2014-01-01

    During this professional research--Construction Project Forecasting (Practical Use of EV Metrics), which criticize earned value management as a most distinguished methodology for forecasting the project expected end dates and expecting budget at completion, the field for the research is construction field and specially the projects which content different phases without repetitive tasks. Forecasting for construction project is a complicated process need more than applying one equation only. As assuming that, project performance during finishing stage will be similar to project performance during concrete stage is totally wrong. The case study techniques have been used to prove an important idea and also to implement a suggested protocol which actually implemented and tested and it should be considered as a research finding. The project used in this case study is "Hurgadah Intemational Airport--New Terminal Building", while executing this complex construction projects with different stages the forecasting for the project end date and final end budget were completely not realistic. The above leads to questioning the next: "Is it true that using the earned value indexes for forecasting construction projects end date and final budget is the right way? And if not, what is the right process that should be used in order to reach acceptable forecasting method?" We implement the EV measurements by the normal technique and also implement in the same month the suggested protocol for forecasting, comparing the results proof the effectiveness of the suggested protocol. The findings prove that, the construction projects need special treatment when use the EVM for forecasting. The earned value indexes created to serve the projects which have repeated tasks or can say which got one stage only, like information technology (IT) projects as those projects depending on manpower productivity and also based on few different qualifications. On such type of projects

  19. Pipeline repair in crossing river; Reparo de oleoduto em travessia de rio

    Energy Technology Data Exchange (ETDEWEB)

    Ribeiro, Walter Manoel [TRANSPETRO - PETROBRAS Transporte S.A., Rio de Janeiro, RJ (Brazil)

    2004-07-01

    The inspection and repair of buried pipelines in rivers crossings request the perfect study and use of techniques committed with the people's safety, environmental and pipelines integrity. The planning, elaboration and training in the constructive methods, analysis of technical alternatives and the logistics are preponderant factors. This paper describes step by step, since the risks and difficulties to find a pipe defect indicated in the report of intelligent pig, as well as the actions, experiences and techniques (project, pipeline location, excavation, underwater lowering, reinforcement metallic trench, water exhaustion, rock dismount and pipeline repair sleeves) that allowed repair a pipeline in river crossing. (author)

  20. Evaluating Factors that Affect Construction Project Duration

    Science.gov (United States)

    1992-09-01

    Robinson Report on Artificial Intelligence, Vol 5, No. 3 (March 1989). Arditi , David, "Diffusion of Network Planning in Construction," Journal of the...Construction Division, Vol 109, No. CO1 (American Society of Civil Engineers [ASCE], March 1983). Arditi , David, et al., "Line of Balance Scheduling in

  1. Development Prospect of Oil & Gas Pipelines of CNPC

    Institute of Scientific and Technical Information of China (English)

    Feng Yaorong; Chen Hao; Zhang Jinjun; Zhang Kegang

    2008-01-01

    @@ Technology progress of oil & gas pipelines transportation project of CNPC since the 11th Five-Year Plan period An introduction to oil & gas pipelines transportationproject As a large industrious system, pipelines transportation industry is playing a more and more important role in oil and natural gas industry even in the world economy.Thanks to the efforts of 40 years, substantial progress has been achieved in the oil & gas pipelines construction in China. Till now, long distance oil & gas transportation trunk pipelines with large caliber have been completed one after another, with a total length exceeding 50 thousand kilometers (kin). CNPC boasts a long distancel and oil transportation pipeline of 30 thousand km.

  2. A Pipeline for Constructing Optimized N-Body Models of Interacting Galaxies

    Science.gov (United States)

    Harvey, Allen S., Jr.

    Galaxies form the building blocks of our understanding of a hierarchical evolution of the universe. Galaxies interact with other galaxies by impacting each other's gravitational fields, exchanging mass, spurring star formation, and even by merging. As sky surveys continue to capture images of interacting galaxies as they were in a snapshot of time so long ago, simulations of their evolution are needed to understand how they have arrived at their observed state. Restricted three-body simulations have advanced to produce realistic gravitational potentials to rapidly model interacting galaxies. Much research has been conducted to advance the creation and convergence of these models to obtain good matches to observed galaxies. Unfortunately, these models lack the physics for rich and realistic tidal features, gas dynamics, stellar black holes, and star formation, among others, that necessitate the use of higher fidelity models, such as N-Body gravity methods. The parameters describing the interacting galaxies from a restricted three-body simulation can be backwards integrated to estimate reasonable initial parameters for the galaxies well before their observed state. However, the backwards and forward integration in time of these simulations must be tuned by carefully choosing a tuning scalar to capture the dynamical friction of the interacting galaxies. This dissertation presents a prototype pipeline to link computationally efficient restricted three-body simulations of galaxy interactions to full, high resolution N-Body simulations. The software iterates between both classes of simulations to converge on the best match to an observed galaxy merger state. The system begins with a state vector from a merger at its peri-center as determined by the restricted three-body simulation code, SPAM, with an uncertain value for a dynamical friction scalar. The pipeline uses this vector to backwards integrate another SPAMmodel that systematically varies a scalar for dynamical

  3. Construction status of the J-PARC project

    CERN Document Server

    Nagamiya, S

    2005-01-01

    From Japanese fiscal year JFY2001, which started on April 1, 2001, a new accelerator project to provide high-intensity proton beams proceeded into its construction phase. This project, which is now called the J-PARC (Japan Proton Accelerator Research Complex) project, is in progress under a cooperation of two institutes, KEK and JAERI. We set a goal to achieve 1MW proton beams at 3GeV and 0.75MW beams at 50GeV. The construction period is 7 years, with anticipated first beams in the spring of 2008. In this article I will describe the project itself and the present status of the project.

  4. Leadership Quality for Malaysia Construction Leader to Steer a Success Construction Project

    OpenAIRE

    2016-01-01

    Issues that dominate the construction industry for the long time such as time overrun, cost overrun, quality of construction and also safety during the construction process are difficult to resolve because of several factors involved which amongst them are leadership quality in the industry. Solving these issues can make the industry more sustainable in nature. This paper presents the need of leadership quality among construction parties involved to steer a construction project successfully. ...

  5. Gimme Shelter!: Doghouse Project Hones Construction Skills

    Science.gov (United States)

    Shackelford, Ray; Griffis, Kurt

    2007-01-01

    In Rover's House project, students practice planning, measurement, layout, and processing skills in building a doghouse. The project is more than a doghouse--it is a learning activity that helps students develop and enhance their ability to work with reinforced concrete, steel and wood studs, trusses, roofing materials and a variety of…

  6. Nation-building, industrialisation, and spectacle: Political functions of Gujarat’s Narmada pipeline project

    Directory of Open Access Journals (Sweden)

    Mona Luxion

    2017-06-01

    Full Text Available Since 2000 the Indian state of Gujarat has been working to construct a state-wide water grid to connect 75% of its approximately 60 million urban and rural residents to drinking water sourced from the controversial Sardar Sarovar Dam on the Narmada River. This project represents a massive undertaking – it is billed as the largest drinking water project in the world – and is part of a broader predilection toward large, concrete-heavy supply-side solutions to water insecurity across present-day India. This paper tracks the claims and narratives used to promote the project, the political context in which it has emerged, the purposes it serves and, following Ferguson (1990, the functioning of the discursive-bureaucratic 'machine' of which it is a product. The dam’s reinvention as the solution to Gujarat’s drinking water shortfall – increasingly for cities and Special Industrial Regions – reflects a concern with attracting and retaining foreign investment through the creation of socalled 'world-class' infrastructure. At the same time, this reinvention has contributed to a project of nationbuilding, while remaining cloaked in a discourse of technological neutrality. The heavy infrastructure renders visible Gujarat’s commitment to 'development' even when that promise has yet to be realised for many, while the promise of Narmada water gives Gujarat’s leaders political capital with favoured investors and political supporters. In conclusion, I suggest that the success of infrastructure mega-projects as a political tool is not intrinsically tied to their ability to achieve their technical and social objectives. Instead, the 'spectacle' of ambitious infrastructural development projects may well yield political gains that outweigh, for a time, the realworld costs of their inequity and unsustainability.

  7. Factors influencing cost over-run in Indian construction projects

    Directory of Open Access Journals (Sweden)

    Cindrela Devi A.

    2017-01-01

    Full Text Available Construction cost is the most important criteria of project success and hence the construction project performance is generally expressed in terms of cost and its variance from the budget. In spite of having extant literature, cost estimation methods, cost indices etc., construction projects rarely meet the budgeted cost. This research study focuses on the construction cost overrun and to identify the various factors that affects the construction cost performance. Based on an extensive literature review and input from industry experts, sixty eight factors that causes cost overrun were identified for investigation. Further, a structured questionnaire survey was conducted among the industry experts and the collected data has been analysed statistically. It is concluded that the factors namely scope creep, construction delays, rework and practise of awarding the contract to the lowest bidder are most significant factors for construction cost overrun in non-infrastructural Indian projects. The relative importance of the listed factors used to guide the project team in addressing the cost related risks involved in the projects. The findings are expected to bridge the gap in the current construction cost management practices.

  8. Various Forms of Project Delay in the Construction Industry

    Directory of Open Access Journals (Sweden)

    Nurbasirah Mohamed Alias

    2013-09-01

    Full Text Available Project delay can be defined as an incident that causes extended time in order to complete all or part of a particular project successfully. In other words, delay is the time overrun, either ahead of the date for project completion specified by the contract or further than the extensive contract period where an addition of time has been granted. It should be pointed out that the project delay in the construction industry is a universal or large-scale observable fact affecting not only the construction industry but the overall economy of countries too. As far as world construction industry is concerned, project delays are common problems in the construction industries; particularly most common is in the housing development industries. This paper will present different types of project delay that took place around the world. Project delay involves diverse complicated issues all of which are continuously of crucial importance to the parties to the construction contract. These issues concern right to convalesce costs of the project delay or the need to lengthen the project with the considerable right to recovery costs for adjustments to the contract schedules.

  9. Portfolio management for investment projects in the construction industry

    Directory of Open Access Journals (Sweden)

    Kozlov Alexander

    2017-01-01

    Full Text Available The Russian business community has realized the need for project/targeted programme management procedures; therefore, the demand for customized project-oriented management methods goes up. In the meantime, this demand is not supplied in full, and the supply is far from being efficient. Project management methodologies need further improvement, including development of portfolio management processes applicable to investment projects developed and implemented in the construction industry. The article considers General approaches to the formalization of the management of portfolios of investment–construction projects. For the main groups of processes portfolio management (“Formation and alignment”, “Monitoring and control” and “Support and development” deals with their constituent sub-processes. The proposed decomposition can be used for both portfolio construction and investment projects and also has an invariant character, which allows extending the proposed approaches to other system target–oriented and project–oriented management.

  10. Crossing conflict: The in-service lowering of a 34-in. crude oil pipeline for the construction of the Owen flood diversion channel

    Energy Technology Data Exchange (ETDEWEB)

    Mikkola, C.A.; Fridel, T.W. [Lakehead Pipe Line Co., Inc., Duluth, MN (United States)

    1996-12-31

    Lakehead Pipe Line Company, Inc. (LPL) was involved in a collaborative effort with State, local, and private agencies to solve a major crossing conflict in Owen, Wisconsin. This report describes the analysis and design of an in-service lowering of a 34-in. crude oil pipeline. An integrity assessment was performed using internal smart pig data and magnetic particle and ultrasonic inspections. The pipeline lowering design was based on maximum allowable pipe bending moments and included a coating replacement program and river weight installation. The paper describes design options, right-of-way agreement, contracts, pipe repair techniques and construction.

  11. Various Forms of Project Delay in the Construction Industry

    OpenAIRE

    2013-01-01

    Project delay can be defined as an incident that causes extended time in order to complete all or part of a particular project successfully. In other words, delay is the time overrun, either ahead of the date for project completion specified by the contract or further than the extensive contract period where an addition of time has been granted. It should be pointed out that the project delay in the construction industry is a universal or large-scale observable fact affectin...

  12. A New Schedule Estimation Technique for Construction Projects

    OpenAIRE

    D. H. Warburton, Roger

    2014-01-01

    Allen studied hundreds of construction projects and developed an accu-rate, practically useful model of their labor profiles. We combine Al-len’s labor profile with standard Earned Value Management (EVM) techniques and derive a simple, practical formula that estimates the fi-nal schedule from early project data. The schedule estimation formula is exact; it requires no approximations. The estimate is also surprisingly accurate and available early enough in the project for the project manager ...

  13. Status of the S.E. Geysers effluent pipeline & injection project

    Energy Technology Data Exchange (ETDEWEB)

    Dellinger, M. [Lake County Sanitation District, Lakeport, CA (United States)

    1997-12-31

    A unique public/private partnership of local, state, federal, and corporate stakeholders is constructing the world`s first wastewater-to-electricity system in Lake County, California. A rare example of a genuinely {open_quotes}sustainable{close_quotes} system, three Lake County communities will recycle their treated wastewater effluent through the Geysers geothermal steamfield to produce an estimated 625,000 MWh of electricity annually from six existing geothermal power plants. The concept is shown schematically. Construction was initiated in October 1995, and as of this writing, the system is approximately 85% complete. Operational start-up is expected in October 1997. The key to the project`s success thus far has been its emphasis on cooperative action among affected stakeholders; and a broad, community-based view of solving problems rather than the traditional, narrower view of engineering-driven technical solutions. Special attention has been given to environmentally-responsive engineering design to avoid or minimize adverse environmental impacts.

  14. Factors Affecting Sustainable Performance of Construction Projects during Project Life Cycle Phases

    Directory of Open Access Journals (Sweden)

    Adnan Enshassi

    2016-03-01

    Full Text Available Sustainable development (SD is one of the main challenges faced by the construction industry, which has acquired global attention. Sustainable performance (SP of a construction project during its life cycle (LC is considered crucial to achieve the SD. The aim of this paper is to investigate the factors affecting sustainable performance of construction projects throughout project life cycle phases in the Gaza Strip. A total of 53 sustainable factors (economic, social, and environmental sustainable factors were identified through extensive literature review and confirmed by experts’ interviews and a pilot study. These factors are classified in relation to the project life cycle phases; inception phase, design phase, construction phase, operation phase, and demolition phase. A structured questionnaire survey is employed in this study for primary data collection. A total of 119 questionnaires were distributed randomly to engineers working in construction projects in the Gaza Strip to solicit their views regarding the factors affecting sustainable performance of construction projects throughout project life cycle phases. The results revealed that five factors among the top ten factors that impacting the sustainable performance of construction projects are classified under the construction phase, which confirmed that the construction process has the most effect on the projects SP. Three factors are classified under the inception phase, which assured that the inception of a potential project has a considerable effect projects. In addition, one factor was classified under operation phase and one factor was classified under demolition phase. The most common factors affecting the SP of construction project through the overall sustainability elements: reusable/recyclable element, provision of services, energy consumption, water cost, and water pollution assessment. Further studies are recommended to explore how to integrated sustainability concepts into

  15. 75 FR 81602 - Tennessee Gas Pipeline Company; Notice of Intent To Prepare an Environmental Assessment for the...

    Science.gov (United States)

    2010-12-28

    ... emergency generator, hot water boiler and space heater, all fueled by natural gas. In order to connect the... Energy Regulatory Commission Tennessee Gas Pipeline Company; Notice of Intent To Prepare an Environmental... Expansion Project (Project) involving construction and operation of facilities by Tennessee Gas Pipeline...

  16. Exploring delay causes of road construction projects in

    Directory of Open Access Journals (Sweden)

    Remon F. Aziz

    2016-06-01

    Full Text Available Construction delays are a common phenomenon in civil engineering projects in Egypt including road construction projects. Therefore, it is essential to study and analyze causes of road construction delays. This paper studied a list of construction delay causes gathered from literature having different types of construction, different countries, different periods and different numbers of delay causes and delay groups. A questionnaire and personal interviews have formed the basis of this paper listing 293 delay causes. The questionnaire survey was distributed to 500 construction participants and 389 were received who represent consultants, contractors and site/design engineers excluding the owner representing the government in road projects as one party only. Relative Importance Index (RII is calculated and according to the highest values the top twenty and the least twenty delay causes of construction projects in Egypt are determined. A case study is analyzed and compared to the most important delay causes in the paper. The test results reveal good correlation of causes and groups between contractors and site/design engineers and between consultants and site design engineers and a somewhat low correlation between contractors and consultants. So there are no root causes that can be taking for granted to be most or least effective delay causes. Proposed model for predicting actual road construction project duration was developed; a real case study tested the accuracy of proposed model. According to the analysis of case study, the most contributing causes and groups to delays were discussed, and some future recommendations were proposed in order to control and minimize delays in road construction projects. These findings can be helpful for project managers to mitigate the road construction delays in Egypt. In order to effectively overcome the road construction delays in developing countries, suggestions are made for fundamental and large

  17. Construction Project Leadership from the Perspective of Islam

    Directory of Open Access Journals (Sweden)

    MUHAMAD ROSDI SENAM

    2014-12-01

    Full Text Available Construction industry is continuously being accused with common issues such as low performance, corruptions, spillages, bad practices in addition to common project failures despite advances in project management tools and techniques. This further adds to the existing and increasing complex and multi-facets business environment in construction projects that has resulted in the increasing pressure and challenges faced by project leaders and project managers today. Researchers in project management literature calls for more project leadership research as leadership now is increasingly recognised as project success factor. Ethical dilemma and leadership crisis facing the project managers and business organisations reveals the shortcomings and inadequacies of the conventional non-Islamic leadership that is believed to be or that has not fully considered the religious, spiritual, moral and ethical dimensions. Examples of these theories of leadership are authentic leadership, servant leadership and ethical leadership. Therefore, recent trend from literature has implicitly suggested a new form of leadership for construction project manager which is spiritual, moral, values and ethical form of leadership. The uniqueness of Islam is that it does not separate religion and other aspects of human life activities. Construction and project activities are part of the whole economic and social transactions of a nation and thus it is part of Islam. Project management in particular leadership awaits divine intervention that is tied to God consciousness and accords with values and principles prescribed in the Quran and Sunnah. This research is intended to overcome the spiritual and religious shortcomings of the present leadership models by proposing an Islamic perspective of leadership for construction project manager.

  18. Factors Affecting Sustainable Performance of Construction Projects during Project Life Cycle Phases

    OpenAIRE

    Adnan Enshassi; Bernd Kochendoerfer; Hadeel Al Ghoul

    2016-01-01

    Sustainable development (SD) is one of the main challenges faced by the construction industry, which has acquired global attention. Sustainable performance (SP) of a construction project during its life cycle (LC) is considered crucial to achieve the SD. The aim of this paper is to investigate the factors affecting sustainable performance of construction projects throughout project life cycle phases in the Gaza Strip. A total of 53 sustainable factors (economic, social, and environmental sust...

  19. Information meeting: construction of gas and water pipelines; Informationsveranstaltung: Bau von Gas- und Wasserrohrleitungen

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-07-01

    Already published journal articles added in a conference proceeding on following topics: Regulatories, construction regulations, fittings, quality requirements and corrosion protection. Water pipes and pressure testing and desinfection.(GL) [German] Teilweise bereits veroeffentlichte Zeitschriftenartikel nochmals in einem Konferenzband zusammengefuegt zu folgenden Themen: Regelwerke, Baurichtlinien, Anschluesse, Qualitaetsanforderungen und Korrosonsschutz. Wasserrohrleitungen und deren Druckpruefung und Desinfektion.(GL)

  20. Renewable energy power generation projects started construction in Tibet

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    On March 19, the construction of a 10-MW photovoltaic power plant and a 1 000-kW new type geothermal power generation project were started by Guodian Longyuan Group in Yanbajing Town, Dangxiong County of Tibet.

  1. Exploration and research of city underground pipeline comprehensive tunnel construction%城市地下管线综合隧道建设探索与研究

    Institute of Scientific and Technical Information of China (English)

    王存娟

    2011-01-01

    针对我国城市地下管线管理的混乱局面,提出建设城市地下管线综合隧道将所有管线集中一处综合管理,是实现城市基础设施功能集聚,创造和谐城市生态环境的有效途径,较好地解决了市政管线直埋、线路“蛛网”密布、城市道路“拉链式”反复开挖敷设等问题,有利于管线检修维护管理及突发性事件处置。%In the light of chaotic situation of our country city underground pipeline management, this paper proposed the construction of city underground pipeline comprehensive tunnel, made all pipeline to a point comprehensive management, was the realization of city infrastructure function integration, the effectively created a harmonious city ecological environment, solved the municipal pipelines buried, the line "cobweb", city road "zip type" repeated excavation laying and other problems, advantageous to pipeline maintenance management and disposal of sudden events.

  2. SYNERGIC IMPACT ON SLIPPAGE, COST AND TIME IN CONSTRUCTION PROJECT

    Directory of Open Access Journals (Sweden)

    C. K .Georgekutty

    2012-07-01

    Full Text Available Construction Industry in Kerala has a physical environment which influence cost, time. This is a peculiar issue of a developing country, which leads to many setbacks in completion of projects. This approach has made many challenges in the growth of construction. Material management is an important aspect in project planning andcontrol. It contributes a major portion of expense in construction projects. Controlling procurement and carrying cost can reduce total project cost. To identify the reason for setbacks and suggest an appropriate workable solution under the special circumstances is the aim of this study. A questionnaire survey has been conducted among hundred selected ongoing housing projects in Kochi and nearby districts. Based on the study, only 15% of the projects are expected to complete in time. Though all materials are equally important in construction, some of the key materials specifically control the project cost. A dynamic control over the materials can control project cost. Continues process will optimize the total project cost.

  3. A Systematic Approach to Modelling Change Processes in Construction Projects

    Directory of Open Access Journals (Sweden)

    Ibrahim Motawa

    2012-11-01

    Full Text Available Modelling change processes within construction projects isessential to implement changes efficiently. Incomplete informationon the project variables at the early stages of projects leads toinadequate knowledge of future states and imprecision arisingfrom ambiguity in project parameters. This lack of knowledge isconsidered among the main source of changes in construction.Change identification and evaluation, in addition to predictingits impacts on project parameters, can help in minimising thedisruptive effects of changes. This paper presents a systematicapproach to modelling change process within construction projectsthat helps improve change identification and evaluation. Theapproach represents the key decisions required to implementchanges. The requirements of an effective change processare presented first. The variables defined for efficient changeassessment and diagnosis are then presented. Assessmentof construction changes requires an analysis for the projectcharacteristics that lead to change and also analysis of therelationship between the change causes and effects. The paperconcludes that, at the early stages of a project, projects with a highlikelihood of change occurrence should have a control mechanismover the project characteristics that have high influence on theproject. It also concludes, for the relationship between changecauses and effects, the multiple causes of change should bemodelled in a way to enable evaluating the change effects moreaccurately. The proposed approach is the framework for tacklingsuch conclusions and can be used for evaluating change casesdepending on the available information at the early stages ofconstruction projects.

  4. The Role of Demonstration Projects in Construction innovation processes

    DEFF Research Database (Denmark)

    Clausen, Lennie

    1999-01-01

    The article is describing the methodology of a case-study approach to the investigation of demonstration projects and their impact on the development of process and product innovations in the construction industry.......The article is describing the methodology of a case-study approach to the investigation of demonstration projects and their impact on the development of process and product innovations in the construction industry....

  5. Construction project selection with the use of fuzzy preference relation

    Science.gov (United States)

    Ibadov, Nabi

    2016-06-01

    In the article, author describes the problem of the construction project variant selection during pre-investment phase. As a solution, the algorithm basing on fuzzy preference relation is presented. The article provides an example of the algorithm used for selection of the best variant for construction project. The choice is made basing on criteria such as: net present value (NPV), level of technological difficulty, financing possibilities, and level of organizational difficulty.

  6. Levels of interorganizational trust in construction projects: empirical evidence

    OpenAIRE

    Laan, A.T.; Voordijk, J.T.; Noorderhaven, N.G.; Dewulf, G.P.M.R.

    2012-01-01

    Interorganizational trust is important, especially in an industry characterized by constantly changing combinations of organizations working on temporary projects, as in the construction industry. However, little is known about the factors influencing trust in this setting. This study aims to begin to fill that gap by studying trust in their counterparts, as expressed by principals and contractors engaged in construction projects. The findings show that the temporal embeddedness of the relati...

  7. Probability distribution fitting of schedule overruns in construction projects

    OpenAIRE

    P E D Love; C-P Sing; WANG, X; Edwards, D.J.; H Odeyinka

    2013-01-01

    The probability of schedule overruns for construction and engineering projects can be ascertained using a ‘best fit’ probability distribution from an empirical distribution. The statistical characteristics of schedule overruns occurring in 276 Australian construction and engineering projects were analysed. Skewness and kurtosis values revealed that schedule overruns are non-Gaussian. Theoretical probability distributions were then fitted to the schedule overrun data; including the Kolmogorov–...

  8. Managing Pre-Construction and Construction Risks on Project Sites in Abuja-Nigeria

    Directory of Open Access Journals (Sweden)

    Jimoh R.A.

    2016-03-01

    Full Text Available Managing risks in construction projects has been acknowledged as a key direction process for the purposes of attaining the project goal in terms of time, cost, quality, safety, and environmental sustainability. Hence, the paper evaluated pre-construction and construction risks on active project sites in Abuja-Nigeria. This was achieved using survey method through the self-administration of 35 questionnaires to the professionals handling the 35 identified projects being undertaking at that time. Results showed that errors and omissions in design and improperly defined project scope had mean score values of 3.03 and 2.54, respectively, were the construction risks most experienced by the professionals during pre-construction. On the other hand, fluctuation in market prices and delays with mean score values of 3.14 and 2.74, respectively, were the construction risks experienced by the professionals during the construction phase of the projects. It is recommended that procurement methods such as construction management should be adopted and stakeholders should keep to their own side of the bargain to avoid unnecessary delays.

  9. Ranking of delay factors in construction projects after Egyptian revolution

    Directory of Open Access Journals (Sweden)

    Remon Fayek Aziz

    2013-09-01

    Full Text Available Time is one of the major considerations throughout project management life cycle and can be regarded as one of the most important parameters of a project and the driving force of project success. Time delay is a very frequent phenomenon and is almost associated with nearly all constructing projects. However, little effort has been made to curtail the phenomenon, this research work attempts to identify, investigate, and rank factors perceived to affect delays in the Egyptian construction projects with respect to their relative importance so as to proffer possible ways of coping with this phenomenon. To achieve this objective, researcher invited practitioners and experts, comprising a statistically representative sample to participate in a structured questionnaire survey. Brain storming was taken into consideration, through which a number of delay factors were identified in construction projects. Totally, ninety-nine (99 factors were short-listed to be made part of the questionnaire survey and were identified and categorized into nine (9 major categories. The survey was conducted with experts and representatives from private, public, and local general construction firms. The data were analyzed using Relative Importance Index (RII, ranking and simple percentages. Ranking of factors and categories was demonstrated according to their importance level on delay, especially after 25/1/2011 (Egyptian revolution. According to the case study results, the most contributing factors and categories (those need attention to delays were discussed, and some recommendations were made in order to minimize and control delays in construction projects. Also, this paper can serve as a guide for all construction parties with effective management in construction projects to achieve a competitive level of quality and a time effective project.

  10. Real-time and dynamic schedule optimization of construction projects on the basis of lean construction

    Institute of Scientific and Technical Information of China (English)

    QI Shen-jun; DING Lie-yun; LUO Han-bin; DONG Xiao-yan

    2007-01-01

    Lean construction has been newly applied to construction industry. The best performance of a project can be achieved through the precise definition of construction product, rational work break structure, lean supply chain, decrease of resources waste, objective control and so forth. Referring to the characteristics of schedule planning of construction projects and lean construction philosophy, we proposed optimizing methodology of real-time and dynamic schedule of construction projects based on lean construction. The basis of the methodology is process reorganization and lean supply in construction enterprises. The traditional estimating method of the activity duration is fuzzy and random; however, a newly proposed lean forecasting method employs multi-components linear-regression, back-propagation artificial neural networks and learning curve. Taking account of the limited resources and the fixed duration of a project, the optimizing method of the real-time and dynamic schedule adopts the concept of resource driving. To optimize the schedule of a construction project timely and effectively, an intellectualized schedule management system was developed. It can work out the initial schedule, optimize the real-time and dynamic schedule, and display the schedule with the Gant Chart, the net-work graph and the space-time line chart. A case study was also presented to explain the proposed method.

  11. Success Factors in Construction Projects: : A Study of Housing Projects in Ukraine.

    OpenAIRE

    Didenko, Inna; Konovets, Ivan

    2009-01-01

    Broadly discussed in the literature the concept of project success still remains ambiguously defined. The well known success criteria like time, cost and quality does not provide any practical nformation of achieving of project objectives in an efficient way. Identification of main drivers of project success gain particular importance for companies in the light of highly competitive environment. Housing construction projects represent one of the largest sector in construction industry and Ukr...

  12. Leadership Quality for Malaysia Construction Leader to Steer a Success Construction Project

    Directory of Open Access Journals (Sweden)

    Ngah Nasaruddin Nur Ain

    2016-01-01

    Full Text Available Issues that dominate the construction industry for the long time such as time overrun, cost overrun, quality of construction and also safety during the construction process are difficult to resolve because of several factors involved which amongst them are leadership quality in the industry. Solving these issues can make the industry more sustainable in nature. This paper presents the need of leadership quality among construction parties involved to steer a construction project successfully. Literature work found that 11 leadership qualities to ensure construction project success. From the frequency analysis, five most dominant leadership qualities are team building, communication skill, visioning, planning & strategy skill, and decision making. Beside the literature, this study also seeks an opinion from a senior leader of a successful construction company regarding the need of these qualities amongst parties to resolve the construction issues. The results from an interview session indicate that he fully agreed with the need of all the qualities in the construction industry. This shows that there is a strong relationship between solving the issues with the leadership quality in ensuring construction project success. These qualities should be further investigated to acquire a better representation of leadership quality in resolving construction issues for Malaysia construction industry.

  13. HomBlocks: A multiple-alignment construction pipeline for organelle phylogenomics based on locally collinear block searching.

    Science.gov (United States)

    Bi, Guiqi; Mao, Yunxiang; Xing, Qikun; Cao, Min

    2017-08-03

    Organelle phylogenomic analysis requires precisely constructed multi-gene alignment matrices concatenated by pre-aligned single gene datasets. For non-bioinformaticians, it can take days to weeks to manually create high-quality multi-gene alignments comprising tens or hundreds of homologous genes. Here, we describe a new and highly efficient pipeline, HomBlocks, which uses a homologous block searching method to construct multiple sequence alignment. This approach can automatically recognize locally collinear blocks among organelle genomes and excavate phylogenetically informative regions to construct multiple sequence alignment in a few hours. In addition, HomBlocks supports organelle genomes without annotation and makes adjustment to different taxon datasets, thereby enabling the inclusion of as many common genes as possible. Topology comparison of trees built by conventional multi-gene and HomBlocks alignments implemented in different taxon categories shows that the same efficiency can be achieved by HomBlocks as when using the traditional method. The availability of Homblocks makes organelle phylogenetic analyses more accessible to non-bioinformaticians, thereby promising to lead to a better understanding of phylogenic relationships at an organelle genome level. HomBlocks is implemented in Perl and is supported by Unix-like operative systems, including Linux and macOS. The Perl source code is freely available for download from https://github.com/fenghen360/HomBlocks.git, and documentation and tutorials are available at https://github.com/fenghen360/HomBlocks. yxmao@ouc.edu.cn or fenghen360@126.com. Copyright © 2017 Elsevier Inc. All rights reserved.

  14. Imperative Causes of Delays in Construction Projects from Developers’ Outlook

    Directory of Open Access Journals (Sweden)

    Othuman Mydin M.A.

    2014-03-01

    Full Text Available Project delays in the construction industry are a universal or large-scale observable fact affecting not only the construction industry but the overall economy of countries as well. As far as the Malaysian construction industry is concerned, project delays are common problems in the construction industry, particularly in housing development. The objective of this study is to evaluate and identify the causes and the consequences of project delays in private housing development projects in Malaysia, and the remedies that can minimize these delays. The top ten causes of delays are weather conditions, poor site conditions, poor site management, incomplete documents, lack of experience, financial problems, contract modifications, delay in the approval of major variations, contractor coordination problems with other parties, and construction mistakes and defective works. It has been analysed that the causes of the delays point to the contractor factors, which contribute to the major factors that cause project delays in private housing development projects. The consequences of the delays include time overrun, cost overrun, differences in opinion, negotiations, legal actions and total abandonment. Herewith are presented some recommendations to minimize these project delays.

  15. Guidelines for Successful Supervision of School District Capital Construction Projects.

    Science.gov (United States)

    New York State Education Dept., Albany. Office of Facilities Planning.

    Successfully completing school district capital construction requires the proper execution of the construction project itself involving the cooperation and understanding by all parties involved. This document presents guidelines that clarify the interrelationships and expected actions on the part of school representatives, the architect or…

  16. Genetic algorithms for construction site layout in project planning

    NARCIS (Netherlands)

    Mawdesley, Michael J.; Al-Jibouri, Saad H.S.; Yang, Hongbo

    2002-01-01

    Construction site layout is concerned with the existence, positioning, and timing of the temporary facilities that are used to carry out a construction project. Typically these problems are very complicated to formulate and difficult to solve. They are, however, very important to virtually any

  17. Alignment between ICT and communication in construction projects

    NARCIS (Netherlands)

    Adriaanse, Arjen M.; Voordijk, Hans; Dewulf, Geert P.M.R.

    2004-01-01

    Through rapid advancements in ICT, opportunities arise in enhancing communication between participants of different organisations in construction projects. The use of ICT in construction is, however, relatively limited and ineffective compared to other sectors such as the automotive or the aerospace

  18. Challenges of mega construction projects in developing countries

    OpenAIRE

    Ezzat Othman, Ayman Ahmed

    2013-01-01

    Mega Construction Projects (MCPs) represent a strategic option towards achieving sustainable development objectives in developing countries. On the one hand, these projects are charaterised with the need for high design knowledge and technical skills; competent human resources and managerial capabilities as well as excessive cost investment. Conversely, developing countries experience shortage of many of these requirements, which obstruct the development of (MCPs)....

  19. The Problems of project management software implementation in construction corporations

    Directory of Open Access Journals (Sweden)

    Kagan Pavel

    2016-01-01

    Full Text Available The article is devoted to the main problems facing many companies, implementing software project management activities have been working construction corporation. The company transferred the task performing the activities for the implementation, as well as its purpose. Revealed rules that must be followed to achieve the best results in the implementation of software project management.

  20. Albuquerque's constructed wetland pilot project for wastewater polishing

    Science.gov (United States)

    Michael D. Marcus; Shannon M. House; Nathan A. Bowles; Robert T. Sekiya; J. Steven Glass

    1999-01-01

    The City of Albuquerque has funded the Constructed Wetland Pilot Project (CWPP) since 1995 at the City's Southside Water Reclamation Plant (SWRP). Results from CWPP and other wetland treatment projects indicate that appropriately designed surface-flow wetlands could increase the cost-efficiencies of wastewater treatment, as well as help the City meet present and...

  1. Costs Climb on Materials for Schools: Construction Projects Delayed, Scrapped

    Science.gov (United States)

    Sack, Joetta L.

    2004-01-01

    The rapidly rising cost of steel and other construction materials is forcing some districts that are building new schools to scramble for more money, delay work, or redesign projects. Nationwide, contractors and architects are finding it harder to give accurate estimates on projects, and some have even had to renegotiate contracts with districts.…

  2. EPC模式下“两书一表”在管道施工中的应用探讨%"Two book a Table” in the Application of Pipeline Construction at EPC mode

    Institute of Scientific and Technical Information of China (English)

    康茹; 关汝滨; 闫峻

    2014-01-01

    "Two books a table" is basic HSE management pattern of grass-roots organization in China national petroleum corporation organizations(CNPC). The HSE system documents at the EPC management mode were listed in pipeline construction. "Two books a table" has become a symbol and brand of grass-roots organization HSE system management in CNPC, which avoid the construction risks. But there also exist some problems in its field use. This paper put forward some improvement measures to ensure that " zero accident, zero injury, zero pollution of HSE control indicators in the pipeline construction project .%“两书一表”是中石油基层组织HSE管理基本模式,通过列举管道施工中EPC管理模式下的HSE体系文件,说明“两书一表”已成为中国石油基层组织实施HSE体系管理的标志和品牌,规避了施工风险。但是“两书一表”在现场使用中也存在某些问题,本文针对性地提出了一些改进办法,以确保管道施工工程实现“零事故、零伤害、零污染”的HSE控制指标。

  3. OPTIMAL DESIGN OF DEEP FOUNDATION PIT CONSTRUCTION PROJECT IN WUHAN

    OpenAIRE

    Nguyen Xuan Loi, Wu Li*, Nguyen Khanh Tung

    2016-01-01

    Deep foundation pit construction project is one of hot and difficult problems in rock soil engineering. How to control the deformation of the pits effectively and economically is what we all want. Retaining structure deformation of foundation pit is an important factor on the deformation of foundation pit. Reference of domestic and foreign research and the experience of similar projects, combined with the characteristics of Wuhan project, calculation, analyses and compared two design options ...

  4. Project management: a case study in construction industry

    OpenAIRE

    Kömürcü, Ahmet Murat

    1996-01-01

    Ankara : The Faculty of Management and the Graduate School of Business Administration of Bilkent University, 1996. Thesis (Master's) -- Bilkent University, 1996. Includes bibliographical references leaves 55-56 One of the application areas that project management can effectively be applied is the construction industry. In this thesis, a case study is carried out in order to point out the importance and essentiality of project management, especially project scheduling and control. For...

  5. Expansive Learning in Construction Projects - a Contradiction in terms?

    DEFF Research Database (Denmark)

    Klitgaard, Anne; Nissen, Søren Bülow; Beck, Frederikke

    2016-01-01

    This research is a preliminary study performed as part of a primary research into expansive learning in interorganizational network set up to solve a construction project. The construction industry has long had issues about productivity, which can be an indication of lack of learning. A case study......-fixed projects. Research in construction management fails to generate and document knowledge because of the limitations of case studies....... of a workshop was conducted where coordination and collaboration meetings were observed. The data was analysed using activity theory and the expansive learning model. The analysis shows that the strong focus on object by project’s activity system hinders expansive learning. The students learned through...

  6. Risk Management In Construction Projects Of Developing Countries

    Directory of Open Access Journals (Sweden)

    Divya Gupta

    2015-11-01

    Full Text Available Managing risks in construction projects has been perceived as a very important management process so as to accomplish the undertaking goals as far as time, cost, quality, safety and environmental sustainability. Projects have become shared effort of multiple parties and construction industry is a good example of an area, where the project outcome is delivered in an extremely complex actor network. By adopting risk management, savings’ potentials can be realized in construction projects. For this reason, consideration of the risk management process is worthwhile for project managers as well as real estate developers. The implementation of risk management system in construction projects must be oriented towards the progress of the project and pervade all areas, functions and processes of the project. For analyzing the levels of various risk factors in construction industry, questionnaire surveys were used to collect data. Based on a comprehensive assessment of the likelihood of occurrence of various risks and their impacts on the project objectives, this paper identifies twenty major risk factors. This research found that these risks are mainly related to (in ranking contractors, clients and designers, with a few related to government bodies, subcontractors/suppliers and external issues. Among them, “Financial Risk” is recognized to influence all project destinations maximally, whereas working in hot areas, closure, defective design and delayed payments on contract are also some important risk factors. This research also found that these risks spread through the whole project life cycle and many risks occur in more than one phase, with the construction stage as the most risky phase, followed by the feasibility stage. It is concluded that clients, designers and government bodies must work cooperatively from the feasibility phase onwards to address potential risks in time. Also contractors and subcontractors with robust construction and

  7. Insurance ratemaking method for risk of construction diversion project

    Institute of Scientific and Technical Information of China (English)

    Chen Zhiding; Hu Zhigen

    2012-01-01

    Based on analyzing risk factors of diversion project, synthetic risk rate and engineering insurance period, the frequency and distribution law of loss are researched on the grounds that foundation pit is submerged after diversion project ceases to be effective. And then, the standpoint that these total loss is subject to non-homogeneous compound Poisson processes is put forward. Furthermore, the collective risk model of the total loss about engineering insurance is established on the basis of construction diversion project risk. Ultimately, insurance ratemaking method for construction engineering risk and its mathematical expression are presented, which provides theoretical method for the insurance ratemaking of hydropower engineering to some extent.

  8. Analysis of Project Success Criteria in the Nigerian Construction Industry

    Directory of Open Access Journals (Sweden)

    Oluwaseun Sunday Dosumu

    2013-02-01

    Full Text Available This paper examined the relative importance of the project success criteria in the Nigerian construction industry. It also determined the correlation among the project success criteria. Based on the literatures reviewed, the study proposed a framework for measuring project success in the construction industry. The respondents for the study were the government, private clients, consultants and contractors. Three hundred copies of questionnaires were distributed to capture data on the subject, but only 86 were returned and used for the study. The paper captured respondents that are resident in Lagos state, Nigeria and chosen by convenience from selected organizations used for the study. The data were analysed with SPSS 16 through the use of frequencies, mean scores, factor analysis and correlation. Factor analysis was employed because the mean scores showed that all the project success criteria were at least important. Nine principal components were finally merged into 4 through the factor analysis using the Varimax rotation with Keiser normalization. The study found out that all the project success criteria were important but their level of importance differs according to the factor analysis carried out. Therefore, it was concluded that there are four major components of construction project success in Nigeria- user-related factors, professionals’ factors, organisational factors and other minor factors. The minor factors were found to be related to both organizations and projects but were not highly rated by respondents for determining construction project success. The study also concludes that project success criteria goes beyond meeting cost, time and quality target, it includes users’ satisfaction, professionals’ fulfilment and achievement of organizational goals. The recommendation of the study was that for construction projects to be successful, attention must be paid to users’ related factors, professionals’ factors and

  9. Identification and assessment of risk factors affecting construction projects

    Directory of Open Access Journals (Sweden)

    Mohamed Sayed Bassiony Ahmed Abd El-Karim

    2017-08-01

    Unexpected increase in cost and delays in construction projects are caused by owner, contractor, environments, etc. in which several types of risk factors may occur concurrently. The effect of cost overrun and schedule overrun do not only influence the construction industry but the overall economy as well. Even though construction project increasing in cost and schedule has received extensive attention of researchers, but because of continuous changes and development in the field, the study considered of added value to the construction industry in Egypt, in addition to risk strategy and plan analysis. In order to meet the deadline of a project and due to the complex nature of construction projects, cost and scheduling should be flexible enough to accommodate changes without negatively affecting the overall project cost and duration. As such, the objectives of the presented research in this paper are to identify, study, and assess the effect of the factors that affect cost and time contingency. Data are collected from sixteen construction companies in Egypt. The collected data, output charts and analyses spreadsheets will be used for the development of computerized model built by the authors with identification abbreviation RIAM.

  10. Pipe-slipping installation technology applied to the construction of mountain pipeline%滑管安装技术在山区管道施工中的应用

    Institute of Scientific and Technical Information of China (English)

    焦如义; 魏国昌; 尹辉庆; 白世武

    2012-01-01

    山区陡坡地段一直是油气管道施工的难点.详细介绍了滑管式管道施工技术的原理和工艺流程,并以图解的形式重点说明了管段与牵引装置的连结方法以及顺直管沟管段下滑就位、水平弯管沟管段下滑就位过程.通过分析总结该技术在西气东输二线工程中的应用表明,该技术能够解决山区陡坡地段管道施工的难点,缩短施工工期,降低施工成本,并取得良好的经济效益和社会效益.%Pipeline installation in mountain's steep slope has always been a difficult construction process. This paper introduces the principles and process flow of pipe-slipping installation technology, and highlights the connection method between pipe section and traction device and in- place process of slipping down along the pipe sections of straight pipe trench and of horizontal bending pipe trench in illustration way. The results from analysis and overview on the technology application in the 2nd West-to-East Gas Pipeline Project show that this technology can override the barriers in front of the pipeline installation at steep slope in mountain, shortening the construction period and lowering construction costs, thus achieving good economic and social benefits.

  11. The Pergau hydroelectric project. Pt. 2: Civil engineering construction

    Energy Technology Data Exchange (ETDEWEB)

    McEwan, E.; Idiculla, J.; Patel, R. [Balfour Beatty Cementation Joint Venture, Sidcup (United Kingdom)

    1997-09-01

    The Pergau Hydroelectric Project was built as a design and construct contract in Northern Peninsular Malaysia by an Anglo-Malaysian joint venture with funding assistance provided by the British Government. The project is located approximately 100 km west of the Kelantan State capital of Kota Bharu. This paper describes the contractor`s mobilization for the 600 MW hydroelectric project and the general construction requirements for the project. Although each section of the works had its own particular problems of construction, this paper concentrates on the following three areas that were critical in meeting the key dates for completion: the powerhouse and power tunnels; the power shaft; the Kuala Yong dam. It also includes a brief description of the tunnelling methods used. (author)

  12. Project coalitions in healthcare construction projects and the application of real options: an exploratory survey

    NARCIS (Netherlands)

    van Reedt Dortland, Maartje; Dewulf, Geert P.M.R.; Voordijk, Johannes T.

    2013-01-01

    OBJECTIVE: Exploring the impact of the type of project coalition on types of flexibility by analyzing considered and exercised flexibilities in separated and integrated project coalitions in the design and construction phase and the operations and maintenance phase of a healthcare construction proje

  13. Project management mode and its application in long-distance oil and gas pipelines%长输油气管道项目管理模式及其应用

    Institute of Scientific and Technical Information of China (English)

    沈庚民

    2013-01-01

    从项目管理的基本要点出发,介绍了目前在国内外得到广泛应用的8种工程项目管理模式及其优缺点和适用范围,具体包括:DBB (Design-Bid-Build)模式、DB (Design-Build)模式、CM (Construction Management)模式、PMC(Project-Management-Contractor)模式、BOT (Build-Operate-Transfer)模式、Partnering模式、EPC (Engineering-Procurement-Construction)模式、PPP(Public and Private Partnership)模式.其中DB模式是业主对项目设计控制最弱的模式之一;BOT模式和PPP模式是政府为了解决扩大基础设施与政府财政匮乏之间的矛盾,通过引入私人资本进行公共基础设施建设的一种新型融资模式.例举兰郑长管道、苏丹一期管道、Mackenzie Valley管道3个工程项目,分析了不同项目管理模式的适用性.%Based on the main points of project management, 8 engineering project management modes widely used at home and overseas and their strengths & weaknesses and ranges of application are described, including DBB (Design-Bid-Build) mode, DB (Design-Build) mode, CM (Construction Management) mode, PMC (Project-Management-Contractor) mode, BOT (Build-Operate-Transfer) mode, partnering mode, EPC (Engineering-Procurement-Construction) mode and PPP (Public and Private Partnership) mode. The DB mode is one of the modes with the weakest project design control by the owner, BOT mode and PPP mode are new financing modes by which the government introduces private sources for construction of public infrastructures to solve the contradiction between infrastructure expansion and lack of government finance. Three projects in Lanzhou-Zhengzhou-Changsha Pipeline, Sudan Phase 1 Pipeline and Mackenzie Valley Pipeline are enumerated to analyze the applicability of different project management modes.

  14. Pipeline engineering

    CERN Document Server

    Liu, Henry

    2003-01-01

    PART I: PIPE FLOWSINTRODUCTIONDefinition and Scope Brief History of PipelinesExisting Major PipelinesImportance of PipelinesFreight (Solids) Transport by PipelinesTypes of PipelinesComponents of PipelinesAdvantages of PipelinesReferencesSINGLE-PHASE INCOMPRESSIBLE NEWTONIAN FLUIDIntroductionFlow RegimesLocal Mean Velocity and Its Distribution (Velocity Profile)Flow Equations for One-Dimensional AnalysisHydraulic and Energy Grade LinesCavitation in Pipeline SystemsPipe in Series and ParallelInterconnected ReservoirsPipe NetworkUnsteady Flow in PipeSINGLE-PHASE COMPRESSIBLE FLOW IN PIPEFlow Ana

  15. Radioactive Air Emission Notice of Construction (NOC) for Construction of Liquid Effluent Transfer System Project W-519

    Energy Technology Data Exchange (ETDEWEB)

    HOMAN, N.A.

    2000-05-01

    The proposed action is to install a new liquid effluent transfer system (three underground waste transfer pipelines). As such, a potential new source will be created as a result of the construction activities. The anticipated emissions associated with this activity are insignificant.

  16. Research on Water Pipeline Crossing the Main Channel of South-to-North Water Transfer Project Scheme%输水管道穿南水北调总干渠方案研究

    Institute of Scientific and Technical Information of China (English)

    李菊先; 马俊青; 刘长垠; 侯丽娜

    2012-01-01

    According to the design technology standard of South-to-North Water Transfer Project main channel, the construction of water pipeline crossing the main channel will not occupy the water head of main channel. Based on the relationship among the bottom elevations of water pipeline and main channel, and the design water line, pipeline bridge upon the channel and the inverted siphon under the bottom of channel have been considered. After the comprehensive analysis and comparison on technology.economy, and construction etc,the inverted siphon under the bottom of channel with the protective box culvert outside has been used for the construction of water pipeline when crossing the main channel.%根据南水北调总干渠总体设计技术规定:输水管道穿越总干渠,其穿越建筑物不占用总干渠水头.为满足总体设计要求,根据输水管道管底高程、总干渠渠底高程及设计水位的相互关系,考虑了渠上管道桥和渠底倒虹吸两种穿越方案,通过技术、经济、施工等综合分析比较,确定输水管道穿总干渠建筑物型式为渠底倒虹吸,倒虹吸管外加防护箱涵.

  17. ALMA Pipeline: Current Status

    Science.gov (United States)

    Shinnaga, H.; Humphreys, E.; Indebetouw, R.; Villard, E.; Kern, J.; Davis, L.; Miura, R. E.; Nakazato, T.; Sugimoto, K.; Kosugi, G.; Akiyama, E.; Muders, D.; Wyrowski, F.; Williams, S.; Lightfoot, J.; Kent, B.; Momjian, E.; Hunter, T.; ALMA Pipeline Team

    2015-12-01

    The ALMA Pipeline is the automated data reduction tool that runs on ALMA data. Current version of the ALMA pipeline produces science quality data products for standard interferometric observing modes up to calibration process. The ALMA Pipeline is comprised of (1) heuristics in the form of Python scripts that select the best processing parameters, and (2) contexts that are given for book-keeping purpose of data processes. The ALMA Pipeline produces a "weblog" that showcases detailed plots for users to judge how each step of calibration processes are treated. The ALMA Interferometric Pipeline was conditionally accepted in March 2014 by processing Cycle 0 and Cycle 1 data sets. From Cycle 2, ALMA Pipeline is used for ALMA data reduction and quality assurance for the projects whose observing modes are supported by the ALMA Pipeline. Pipeline tasks are available based on CASA version 4.2.2, and the first public pipeline release called CASA 4.2.2-pipe has been available since October 2014. One can reduce ALMA data both by CASA tasks as well as by pipeline tasks by using CASA version 4.2.2-pipe.

  18. DECISION SUPPORT CONCEPT TO MANAGEMENT OF CONSTRUCTION PROJECTS - PROBLEM OF CONSTRUCTION SITE SELECTION

    Directory of Open Access Journals (Sweden)

    Nikša Jajac

    2013-02-01

    Full Text Available The aim of this paper is to present Decision Support Concept (DSC for management of construction projects. Focus of our research is in application of multicritera methods (MCM to decision making in planning phase of construction projects (related to the problem of construction sites selection. The problem is identified as a significant one from many different aspects such as economic aspect, civil engineering aspect, etc. what indicates the necessity for evaluation of multiple sites by several different criteria. Therefore, DSC for construction site selection based on PROMETHEE method is designed. In order to define the appropriate criteria, their weights and preference functions for the concept, three groups of stakeholders are involved (investors, construction experts and experts for real estate market in its design. AHP method has been used for determination of criteria weights. The model has been tested on the problem of site selection for construction of residential-commercial building in four largest cities in Croatia.

  19. Governance of Post-Construction Activities in IS Development Projects

    Directory of Open Access Journals (Sweden)

    Esmat M. Abdelmoniem

    2012-09-01

    Full Text Available Researches continually show that many information systems (IS development projects all over the world have difficulties to be completed on time or on budget or on scope, In fact many of them are cancelled before completion or are not implemented. Project success is affected by many factors such as project team, suppliers, Customers and stakeholders. So a governance model for IS development projects implementation was developed and tested, by governance of Post-Construction activities in IS development Projects. The implementation of governance model covering factors can be divided into 4 categories (Management, Projects, Organizations, and Systems to assess the influence of Critical Success Factors (CSF's on the implementation of IS projects on large companies in Egypt. Our main concern while performing this study was to collect the factors that could be more beneficial to a developing country setting like Egypt.

  20. Construction Project Success ranking through the Data Envelopment Analysis

    Directory of Open Access Journals (Sweden)

    Mazyar Zahedi-Seresht

    2014-09-01

    Full Text Available The purpose of this paper is to rank construction projects' success in a post delivery phase. To attain this objective, a data envelopment analysis (DEA approach is used. The model's output is a project success index which is calculated based on five project success criteria. These criteria which are determined by a two-round Delphi questionnaire survey are time performance, cost performance, quality, HSE, and customer satisfaction. The input factors which have effects on the output measures are Organizational Sponsorship, Project Manager Competency, Customer Organization, Project Operational Environment and Organizational Experience. The tool adopted to determine these factors is questionnaire. This model is applied for 9 projects with different importance of output and input factors and the reasonable result is achieved for ranking these projects.

  1. Assessing the Effects of Construction Delays on MARA Large Projects

    Directory of Open Access Journals (Sweden)

    Aftab Hameed Memon

    2011-01-01

    Full Text Available Construction industry in Malaysia is facing a serious issue of construction delay causing a significant amount of time over run and cost over run. Various studies have addressed the issue of construction delay, however, most of studies focused on identifying causes of delay. Less attention has been paid of assessing effects of construction delay. Hence this study is aimed to assess effects of construction delay on MARA large projects. Investigation approach for study includes the site study of 30 MARA  large projects selected from various areas of Malaysia and structured questionnaire survey among client, consultant and contractor personnel’s. It is important to note that 90% of MARA projects are experiencing time overrun. Data was analyzed with statistical analysis  to calculate rank of the effects of delays and correlation with spearman formula to identify the interrelationship between attributes of effects. Results showed that time over-run and cost over-run are most significant effects of delay on MARA construction projects. Time over-run has high degree of correlation with cost over-run and moderate degree of correlation with disputes.

  2. Appraisal of Construction Project Procurement Policies in Nigeria

    Directory of Open Access Journals (Sweden)

    Bima Abubakar Muhammad

    2015-03-01

    Full Text Available The success of performance of public sector projects in Nigeria is tied to the impact of procurement strategy or policy used in providing the building. Procurement policies significantly influence the success of construction projects since they are designed to provide solutions to specific project needs or conditions. The Nigerian construction industry was analyzed with particular emphasis on public sector procurement. The general performance of public sector projects in Nigeria was broadly assessed and quite unfortunately the literature review has criticized public sector procurement in Nigeria of been inefficient for efficient project delivery. Equally the respondents to the survey data obtained from the questionnaire distributed and oral interview conducted suggest that projects are affected by the procurement strategy adopted for project delivery. A significant number of the questionnaire respondents believe that performance of projects could be improved using alternative or hybrid procurement strategies. Recommendations were proffered in order to mitigate or reduce completely the challenges and complexities faced by public project procurement schemes in Nigeria.

  3. Phase 1 Environmental Baseline Survey for Construction of a Wastewater Transmission Pipeline by the City of North Las Vegas on Nellis Air Force Base Clark County, Nevada

    Science.gov (United States)

    2009-01-01

    pipeline route. Nellis AFB EBS 17 Mr. Brent Morris , 99CES/CEPM, USAF Civll Structural Team Mr. Brent Morris was contacted at his office, and he...FACILITY UST NELLIS AIR FORCE BASE - MANCH MANO FINDS NELLIS AIR FORCE BASE - BOOSTER PU FINDS NELLIS AIR FORCE BASE - BOOSTER PU FINDS NELLIS AIR...80654001 Date: 2-12-09 Time: 9:00 am Project Name: CNLV/Nellis EBS Employee: Steve Oivanki Person Contacted: Brent Morris , Civil Engr. Organization

  4. Implementation of lean construction techniques for minimizing the risks effect on project construction time

    Directory of Open Access Journals (Sweden)

    Usama Hamed Issa

    2013-12-01

    Full Text Available The construction projects involve various risk factors which have various impacts on time objective that may lead to time-overrun. This study suggests and applies a new technique for minimizing risk factors effect on time using lean construction principles. The lean construction is implemented in this study using the last planner system through execution of an industrial project in Egypt. Evaluating the effect of using the new tool is described in terms of two measurements: Percent Expected Time-overrun (PET and Percent Plan Completed (PPC. The most important risk factors are identified and assessed, while PET is quantified at the project start and during the project execution using a model for time-overrun quantification. The results showed that total project time is reduced by 15.57% due to decreasing PET values, while PPC values improved. This is due to minimizing and mitigating the effect of most of the risk factors in this project due to implementing lean construction techniques. The results proved that the quantification model is suitable for evaluating the effect of using lean construction techniques. In addition, the results showed that average value of PET due to factors affected by lean techniques represents 67% from PET values due to all minimized risk factors.

  5. 77 FR 63309 - Constitution Pipeline Company, LLC; Notice of Public Scoping Meeting and Extension of Scoping...

    Science.gov (United States)

    2012-10-16

    ... Energy Regulatory Commission Constitution Pipeline Company, LLC; Notice of Public Scoping Meeting and Extension of Scoping Period for the Planned Constitution Pipeline Project On October 24, 2012, the Federal... Constitution Pipeline Company's (Constitution) Constitution Pipeline Project. This notice also extends...

  6. Nearshore Pipeline Installation Methods.

    Science.gov (United States)

    1981-08-01

    179. 5. Aldridge, R. G., and Bomba , J. G., "Deep Water Pipelines - Interdependence of Design and Construction", ASCE Paper. 6. American Society Civil...October 13, 1967. 24. Bomba , J. G. and Seeds, K. J., "Pipelining in 600 feet of water .... A Case Study of Washington Natural Gas Company’s Puget Sound...Crossing", Offshore Technology Conference, paper OTC 1188, 1970. 25. Bomba , J., "Submarine Pipe Construction Methods", Petroleum Engineer, Vol. 32

  7. Improving Delivery of Construction Projects in Ghana’s Cities: A Lean Construction Approach

    Directory of Open Access Journals (Sweden)

    Emmanuel Kwaku Salifu-Asubay

    2015-01-01

    Full Text Available The construction industry plays a vital role in the physical and socio-economic development of cities. However, poor execution and frequent breakdown of construction works such as roads and houses obstruct the overall development of cities since most social and economic activities depend of these projects. This paper sought to assess the extent to which lean construction principles are utilised in construction activities in Ghana’s cities and ways that these principles can be applied effectively to improve the delivery of construction works. The study concentrated in Accra, Kumasi and Sekondi-Takoradi cities whilst officials from the Metro Works Departments of the selected cities and various construction professionals constituted the target population. Questionnaire was the research instrument employed and Spearman Rank Correlation Coefficient Test was used to analyse the results. It was revealed that various lean construction principles such as value, value stream, flow, pull and perfection are poorly implemented with each of these principles having less than 50 percent rate of application. Barriers such as long lead time, poor procurement system and contracts, cultural and human factors, political influence, and lack of financial and management commitment were found to be responsible for that. To successfully apply the lean construction principles and enhance the sustainability of construction projects, measures such as benchmarking, process mapping, last planner procedures and continuous training of workers in the construction industry have been recommended.

  8. Incentive Model Based on Cooperative Relationship in Sustainable Construction Projects

    Directory of Open Access Journals (Sweden)

    Guangdong Wu

    2017-07-01

    Full Text Available Considering the cooperative relationship between owners and contractors in sustainable construction projects, as well as the synergistic effects created by cooperative behaviors, a cooperative incentive model was developed using game theory. The model was formulated and analyzed under both non-moral hazard and moral hazard situations. Then, a numerical simulation and example were proposed to verify the conclusions derived from the model. The results showed that the synergistic effect increases the input intensity of one party’s resource transfer into the increase of marginal utility of the other party, thus the owner and contractor are willing to enhance their levels of effort. One party’s optimal benefit allocation coefficient is positively affected by its own output efficiency, and negatively affected by the other party’s output efficiency. The effort level and expected benefits of the owner and contractor can be improved by enhancing the cooperative relationship between the two parties, as well as enhancing the net benefits of a sustainable construction project. The synergistic effect cannot lower the negative effect of moral hazard behaviors during the implementation of sustainable construction projects. Conversely, the higher levels of the cooperative relationship, the wider the gaps amongst the optimal values under both non-moral hazard and moral hazard situations for the levels of effort, expected benefits and net project benefits. Since few studies to date have emphasized the effects of cooperative relationship on sustainable construction projects, this study constructed a game-based incentive model to bridge the gaps. This study contributes significant theoretical and practical insights into the management of cooperation amongst stakeholders, and into the enhancement of the overall benefits of sustainable construction projects.

  9. Effects of the construction of a high density earth fill over the Merluza gas pipeline right-of-way; Efeitos da construcao de aterro de alta densidade sobre a faixa do gasoduto Merluza

    Energy Technology Data Exchange (ETDEWEB)

    Musman, Jacqueline V.R.; Soares, Jose P. [TRANSPETRO - PETROBRAS Transporte S.A., Rio de Janeiro, RJ (Brazil)

    2003-07-01

    In this work, we present the studies for evaluation of the effects of the construction of a high-density earth fill over Merluza gas pipeline right-of-way. The earth fill construction has provoked vertical displacements because of consolidation of the foundation soil, which is consisted of soft clay deposits. So the pipeline is being submitted to tension stresses. The studies included pipeline stress-strain analyses, hardness tests and displacements calculation based on consolidation theory. IPT - Instituto de Pesquisas Tecnologicas made the pipeline stress-strain analyses using the finite element method. Theses analyses indicated tension stresses above the yield limits in some elements. CENPES - Centro de Pesquisas da PETROBRAS made some hardness tests to verify the numerical results. After this, TRANSPETRO evaluated the vertical displacements using consolidation theory. Some laboratory tests were made using undisturbed samples of the soft soil. All these studies were made to verify safety and structural integrity of the gas pipeline. (author)

  10. 加快管道建设是促进天然气消费的重要途径%Speed up the Pipeline Construction is the Major Way to Promote Gas Consumption

    Institute of Scientific and Technical Information of China (English)

    戚爱华

    2011-01-01

    管道运输作为天然气最主要的运输方式,在天然气的发展中起十分重要的作用.管道建设带动了天然气消费快速上升,管道运输使天然气消费区域扩大,使用气结构更趋合理.因此,大力发展天然气,管道运输必须先行.%As the main transportation way, pipelines have played a very important role in gas development.Pipeline construction has brought the rapidly rising of gas consumption. Pipeline transportation has expanded gas consumption area and made the gas utilization structure more reasonable. Therefore, to develop natural gas should develop pipelines first. To speed up gas pipeline construction and facilitate gas utilization is the implementation of the development in a green low carbon way.

  11. A Framework for Coordination Process into Construction Projects

    Directory of Open Access Journals (Sweden)

    Alaloul Wesam S.

    2016-01-01

    Full Text Available Construction industry is recognized as high fragmentation, low efficiency, cost and time overruns in contrast with other industries. These peculiarities are the main roots of poor performance facing by the industry. Effective coordination is vital in construction projects success and mitigate the fragmentation dilemma, however it is often difficult to achieve and need iterative process. Coordination is core issue to improve performance in construction project. Relevant studies have addressed the coordination process importance and implementation, but not in a framework. This paper propose a framework for coordination process in construction projects, as well as its relationship with performance. The objective of the framework is to provide a roadmap for the construction parties to realize operational excellence so that collectively stakeholders can recognize the effect of coordination process application on the project performance. The data were obtained from literature review and structured interviews with five experts. The analysis produced the framework of coordination based on the extensively used procedures for information and data flow between stakeholders.

  12. Factors causing cost variation for constructing wastewater projects in Egypt

    Directory of Open Access Journals (Sweden)

    Remon Fayek Aziz

    2013-03-01

    Full Text Available Cost is one of the major considerations throughout the project management life cycle and can be regarded as one of the most important parameters of a project and the driving force of project success. Despite its proven importance, it is common to see a construction project failing to achieve its objectives within the specific cost. Cost variation is a very frequent phenomenon and is almost associated with nearly constructing all wastewater projects. Maintaining steady cost projection on wastewater projects had been recently an issue of serious concern, both to the client and project contractors. Cost deviation from initial cost plan had been prevalent on construction sites. However, little or no effort has been made to curtail the phenomenon, this research work attempts to identify, investigate and rank factors perceived to affect cost variation in the Egyptian wastewater projects with respect to their relative importance so as to proffer possible ways of coping with this phenomenon. To achieve this objective, author invited practitioners and experts, comprising a statistically representative sample, to participate in a structured questionnaire survey. Brain storming was taken into consideration, through which a number of cost variation factors were identified for constructing wastewater projects. Totally 52 factors were short-listed to be made part of the questionnaire survey and the survey was conducted with experts and representatives from private, public and local general construction firms. The data were analyzed using Relative Importance Index, ranking and simple percentages. It was analytically discovered that factors such as: (1 Lowest bidding procurement method; (2 Additional work; (3 Bureaucracy in bidding/tendering method; (4 Wrong method of cost estimation; and (5 Funding problems were critical for causing cost variation, while (1 Inaccurate cost estimation; (2 Mode of financing and payment for completed work; (3 Unexpected ground

  13. A conceptual model of psychological contracts in construction projects

    Directory of Open Access Journals (Sweden)

    Yongjian Ke

    2016-09-01

    Full Text Available The strategic importance of relationship style contracting is recognised in the construction industry. Both public and private sector clients are stipulating more integrated and collaborative forms of procurement. Despite relationship and integrated contractual arrangement being available for some time, it is clear that construction firms have been slow to adopt them. Hence it is timely to examine how social exchanges, via unwritten agreement and behaviours, are being nurtured in construction projects. This paper adopted the concept of Psychological Contracts (PC to describe unwritten agreement and behaviours. A conceptual model of the PC is developed and validated using the results from a questionnaire survey administered to construction professionals in Australia. The results uncovered the relationships that existed amongst relational conditions and relational benefits, the PC and the partners’ satisfaction. The results show that all the hypotheses in the conceptual model of the PC are supported, suggesting the PC model is important and may have an effect on project performance and relationship quality among contracting parties. A validated model of the PC in construction was then developed based on the correlations among each component. The managerial implications are that past relationships and relationship characteristics should be taken into account in the selection of procurement partners and the promise of future resources, support and tangible relational outcomes are also vital. It is important for contracting parties to pay attention to unwritten agreements (the PC and behaviours when managing construction projects.

  14. Facilitating Value Creation and Delivery in Construction Projects

    DEFF Research Database (Denmark)

    Thyssen, Mikael Hygum; Bonke, Sten

    -dynamics theory. In addition, the following instrumental management concepts, which were deemed relevant to the topic, have been outlined: Briefing / architectural programming, value management and value engineering, values-based management, Lean product development and lean construction. Construction project....... Furthermore, in the instrumental area, the study includes the first scientific and critical examination of the ‘workshop model’. Finally, the thesis introduces an in-novative methodology in construction design management research by adopting (and adjusting) the ‘Reflexive methodology’ developed by Alvesson...

  15. A prototype of workflow management system for construction design projects

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    A great deal of benefits can be achieved if information and process are integrated within the building design project. This paper aims to establish a prototype of workflow management system for construction design project through the application of workflow technology. The composition and function of prototype is presented to satisfy the needs of information share and process integration. By integrating all subsystems and modules of the prototype, the whole system can deal with design information-flow modeling, emulating and optimizing, task planning and distributing, automatic tracking and monitoring, as well as network service, etc. In this way, the collaborative design environment of building design project is brought into being.

  16. 41 CFR 102-80.75 - Who assesses environmental issues in Federal construction and lease construction projects?

    Science.gov (United States)

    2010-07-01

    ... environmental issues in Federal construction and lease construction projects? 102-80.75 Section 102-80.75 Public... Management Assessment of Environmental Issues § 102-80.75 Who assesses environmental issues in Federal construction and lease construction projects? Federal agencies must assess required environmental...

  17. Sustainability indicators for pipeline projects; Indicadores de sustentabilidade aplicados em empreendimentos dutoviarios

    Energy Technology Data Exchange (ETDEWEB)

    Rossin, Carlos H.; Forte, Ana Paula C.; Ferreira, Alexandre R. [PricewaterhouseCoopers (Brazil)

    2005-07-01

    In today's world, large scale projects can no longer be managed through tradition project management tools. The reasons why traditional controls do not work effectively in such projects, is due in large by the complexity of stake holders engagement found in the project's large areas of influence. These stake holders are composed by the communities, the government, the NGOs, and other institutions that are actively present in the project's area of impact and have power to influence the project's embargo. Therefore, it becomes extremely important to manage these impacts to avoid future conflicts with these stake holders. This new concept is a systematic monitoring system that monitors the project's impacts through the use of global indicators (social, economic and environmental) that not only provide a quantitative measure of change in time, but can be further used as a benchmarking tool to compare performance between projects and companies. (author)

  18. National Account Energy Alliance Final Report for the Basin Electric Project at Northern Border Pipeline Company's Compressor Station #7, North Dakota

    Energy Technology Data Exchange (ETDEWEB)

    Sweetzer, Richard [Exergy Partners Corp.; Leslie, Neil [Gas Technology Institute

    2008-02-01

    A field research test and verification project was conducted at the recovered energy generation plant at Northern Border Pipeline Company Compressor Station #7 (CS#7) near St. Anthony. Recovered energy generation plant equipment was supplied and installed by ORMAT Technologies, Inc. Basin Electric is purchasing the electricity under a purchase power agreement with an ORMAT subsidiary, which owns and operates the plant.

  19. The Rural Girls in Science Project: from Pipelines to Affirming Science Education

    Science.gov (United States)

    Ginorio, Angela B.; Huston, Michelle; Frevert, Katie; Seibel, Jane Bierman

    The Rural Girls in Science (RGS) program was developed to foster the interest in science, engineering, and mathematics among rural high school girls in the state of Washington. Girls served include American Indians, Latinas, and Whites. This article provides an overview of the program and its outcomes not only for the participants (girls, teachers, counselors, and schools) but the researchers. Lessons learned from and about the participants are presented, and lessons learned from the process are discussed to illustrate how RGS moved from a focus on individuals to a focus on the school. The initial guiding concepts (self-esteem and scientific pipeline) were replaced by “possible selves” and our proposed complementary concepts: science-affirming and affirming science education.

  20. Performance-based procurement for low disturbance brdige construction projects

    NARCIS (Netherlands)

    Sebastian, R.; Claeson-Jonsson, C.; Di Giulio, R.

    2013-01-01

    Purpose – This paper aims to introduce a method of performance-based procurement, based on the most economically advantageous tender (MEAT), for low-disturbance bridge construction projects in urban environment. Design/methodology/approach – The first part of this paper reviews the key performance i

  1. Quality management in construction project design and management

    CSIR Research Space (South Africa)

    Conradie, Dirk CU

    2008-03-01

    Full Text Available The aim of this paper is to propose the use of simulation to improve design quality and to introduce new opportunities to use quality management throughout the various development stages of construction projects. The paper will attempt to identify...

  2. Performance-based procurement for low disturbance brdige construction projects

    NARCIS (Netherlands)

    Sebastian, R.; Claeson-Jonsson, C.; Di Giulio, R.

    2013-01-01

    Purpose – This paper aims to introduce a method of performance-based procurement, based on the most economically advantageous tender (MEAT), for low-disturbance bridge construction projects in urban environment. Design/methodology/approach – The first part of this paper reviews the key performance

  3. identifying the critical causes of conflict in construction projects in ...

    African Journals Online (AJOL)

    user

    2016-04-02

    Apr 2, 2016 ... Both questionnaire survey and interview were used to capture the perspective of consultants ... related phases- briefing, design, construction and ... evaluation were responsible for conflicts. ... in Nigeria using a mixed method research approach. ..... [11] Dada, M. O. “Analysis of Conflict Centers in Projects.

  4. Information richness in construction projects: A critical social theory

    NARCIS (Netherlands)

    Adriaanse, Adriaan Maria; Voordijk, Johannes T.; Greenwood, D

    2002-01-01

    Two important factors influencing the communication in construction projects are the interests of the people involved and the language spoken by the people involved. The objective of the paper is to analyse these factors by using recent insights in the information richness theory. The critical

  5. Levels of interorganizational trust in construction projects: empirical evidence

    NARCIS (Netherlands)

    Laan, A.T.; Voordijk, J.T.; Noorderhaven, N.G.; Dewulf, G.P.M.R.

    2012-01-01

    Interorganizational trust is important, especially in an industry characterized by constantly changing combinations of organizations working on temporary projects, as in the construction industry. However, little is known about the factors influencing trust in this setting. This study aims to begin

  6. Reducing construction waste: A study of urban infrastructure projects.

    Science.gov (United States)

    de Magalhães, Ruane Fernandes; Danilevicz, Ângela de Moura Ferreira; Saurin, Tarcisio Abreu

    2017-09-01

    The construction industry is well-known for producing waste detrimental to the environment, and its impacts have increased with the development process of cities. Although there are several studies focused on the environmental impact of residential and commercial buildings, less knowledge is available regarding decreasing construction waste (CW) generation in urban infrastructure projects. This study presents best practices to reduce waste in the said projects, stressing the role of decision-making in the design stage and the effective management of construction processes in public sector. The best practices were identified from literature review, document analysis in 14 projects of urban infrastructure, and both qualitative and quantitative survey with 18 experts (architects and engineers) playing different roles on those projects. The contributions of these research are: (i) the identification of the main building techniques related to the urban design typologies analyzed; (ii) the identification of cause-effect relationships between the design choices and the CW generation diagnosis; (iii) the proposal of a checklist to support the decision-making process, that can be used as a control and evaluation instrument when developing urban infrastructure designs, focused on the construction waste minimization (CWM). Copyright © 2017 Elsevier Ltd. All rights reserved.

  7. Child Development Center Construction Project Final Environmental Assessment

    Science.gov (United States)

    2005-04-01

    3-9 3.5.1 Noise Sensitive Receptors...Project Page iii Environmental Assessment LIST OF ACRONYMS 96 ABW 96th Airbase Wing 96 ABW/SEU Range Safety 96 AMDS/ SGB Base Bioenvironmental...site is classified as landscaped/urban. Some longleaf pines would be removed as a result of the construction, but no sensitive species would be

  8. The use of interorganisational ICT in United States construction projects

    NARCIS (Netherlands)

    Adriaanse, Arjen; Voordijk, Hans; Dewulf, Geert

    2010-01-01

    In recent research, the use of ICT applications in real time construction projects have been documented and analysed extensively. However, there is a need for identifying and analysing in-depth the mechanisms influencing the use of interorganisational ICT applications and for solutions to eliminate

  9. Development as an effective management system construction and investment projects

    Directory of Open Access Journals (Sweden)

    Beloborodov Roman S.

    2011-02-01

    Full Text Available The article presents the material of the application of the conception «Development» as the effective methodology of the investment-construction project management within the framework the systems approach. Theoretical principles of the application of this conception are generalized and systematized based on the example of the creation of the low habitable complex.

  10. Synthetic Evaluation on Decision of Public Bidding for Construction Project

    Institute of Scientific and Technical Information of China (English)

    孙涛; 颜秋许

    2002-01-01

    Public bidding is the international current practice to contract construction project. But the decision on the bidding often is made according to the qualitative evaluation based on the subjective opinion of specialists. Therefore, the fuzzy mathematics principle was applied and a synthetic evaluation model was established to provide an effective method for the development of quantitative bidding decision in this paper.

  11. Identifying and managing risk in international construction projects

    Directory of Open Access Journals (Sweden)

    Sachin Kerur

    2012-04-01

    Full Text Available Over the last decade, major construction projects have increasingly arisen in countries or regions that lack specialist, expert construction contractors, suppliers and consultants. Steps are being taken by governments in the Middle East, Eastern Europe, China, India and developing markets to address national infrastructure deficits, and by so doing, are creating new regions of booming construction demand. When coupled with anaemic growth in developed markets such as the United Kingdom, the USA and Western Europe, foreign markets present attractive opportunities to the global construction industry. However, foreign markets are littered with the cautionary tales of international contractors and consultants that have failed to grasp the intricacies and risks of operating in a new environment and have failed to capitalise on the opportunities available. By identifying the classes of risks, and undertaking detailed analysis, ranking and mitigation of relevant jurisdictional risks, participants in international construction projects will increase the likelihood of project success and commercial longevity in the new jurisdiction. Risk identification and assessment is not a science but an art, and while there are many potential approaches to the issue, we propose that our strategies for identifying, assessing, ranking and mitigating jurisdictional risks offer new international players a good chance of commercial success.

  12. Expansive Learning in Construction Projects - a Contradiction in terms?

    DEFF Research Database (Denmark)

    Klitgaard, Anne; Nissen, Søren Bülow; Beck, Frederikke

    2016-01-01

    of a workshop was conducted where coordination and collaboration meetings were observed. The data was analysed using activity theory and the expansive learning model. The analysis shows that the strong focus on object by project’s activity system hinders expansive learning. The students learned through...... acquisition and participation but not by expansive learning. The construction industry needs to accept that the learning generated from projects will be limited to learning by acquisition and participation. The interorganizational network cannot facilitate expansive learning while working on object......This research is a preliminary study performed as part of a primary research into expansive learning in interorganizational network set up to solve a construction project. The construction industry has long had issues about productivity, which can be an indication of lack of learning. A case study...

  13. Oblique Y-groove cracking test of the welding cold cracking susceptibility of domestic X-70 pipeline steel

    Institute of Scientific and Technical Information of China (English)

    陈丽萍; 杜则裕; 李云涛; 李九生

    2002-01-01

    "Gas Transmitting From West to East Project" is significant. It should ensure the welding quality and safety of pipeline. The task is very arduous to guarantee the quality of the project in the condition of long line, complex weather and geology features. In this paper, the welding cold cracking susceptibility of domestic X-70 pipeline steel adopted by the project, which is one of the most interesting questions of welding quality about petrol pipeline, was studied by means of oblique Y-groove cracking test. The crack ratio of surface and section was tested under the conditions of different welding materials and preheat temperature .The X-70 pipeline steel has good crack resistance. The research has important value for the construction of large-scale pipeline engineering and the application of domestic X-70 pipeline steel.

  14. Slurry pipeline hydrostatic testing

    Energy Technology Data Exchange (ETDEWEB)

    Betinol, Roy G.; Navarro Rojas, Luis Alejandro [BRASS Chile S.A., Santiago (Chile)

    2009-07-01

    The transportation of concentrates and tailings through long distance pipeline has been proven in recent years to be the most economic, environmentally friendly and secure means of transporting of mine products. This success has led to an increase in the demand for long distance pipeline throughout the mining industry. In year 2007 alone, a total of over 500 km of pipeline has been installed in South America alone and over 800 km are in the planning stages. As more pipelines are being installed, the need to ensure its operating integrity is ever increasing. Hydrostatic testing of long distance pipeline is one of the most economical and expeditious way to proving the operational integrity of the pipe. The intent of this paper is to show the sound reasoning behind construction hydro testing and the economic benefit it presents. It will show how hydro test pressures are determined based on ASME B31.11 criteria. (author)

  15. 长输管道低温施工的技术问题分析%Technical problems of long distance pipeline construction analysis at low temperature

    Institute of Scientific and Technical Information of China (English)

    张卫云

    2015-01-01

    这篇文章是关于降低温度的环境问题影响长输管道的施工的影响,提出了焊接、下沟、管沟爆破、防腐、回填、管沟开挖等施工技术的保障办法,列举了较低温度下的施工机械和施工人员的防冻保护事项。%This article is about the influence of the construction of long distance pipeline to reduce the temperature of the impact of environmental issues,the welding pipe ditch,ditch,blasting,anti-corrosion,back fill,pipe trench excavation construction technology security measures,lists the antifreeze protection issues of construction machinery and construction workers at lower temperature.

  16. Organization of industrial maintenance in oil pipeline and terminals activities: a project for the implantation of a corporative management system

    Energy Technology Data Exchange (ETDEWEB)

    Correia, Paulo de Tarso Arruda [TRANSPETRO - PETROBRAS Transporte S.A., Rio de Janeiro, RJ (Brazil). Diretoria de Terminais e Oleodutos; Arruda, Daniela Mendonca; Oliveira, Italo Luiz [TRANSPETRO - PETROBRAS Transporte S.A., Rio de Janeiro, RJ (Brazil)

    2009-07-01

    This paper discusses the definition and implementation of a corporate management model for industrial maintenance within TRANSPETRO's Terminals and Oil Pipelines business segment. A project is under way to answer the company's needs for better coordination of its maintenance activities as well as to face the challenge of increasing performance with higher systems and equipment' availability, at lower costs. To achieve this target, the project has been employing updating management tools for industrial maintenance planning and control. Its scope comprises the definition of: industrial maintenance process guidelines; industrial maintenance normative requirements and operational procedures; industrial maintenance performance indicators; local organizational charts; training of maintenance personnel; qualification and certification policies; conceptualization of maintenance engineering and maintenance based on risk; updating technologies such as asset management; warehousing and logistics for maintenance support in the supply of spare parts and materials. The project will also consider the results of a previous strategic sourcing study, concerning the definition of the most suitable out sourcing strategy for each operational unit, considering its characteristics as well as the characteristics of the region where it is located. (author)

  17. Environmental assessment on PETROBRAS pipeline projects: case study of Cacimbas-Catu gas pipeline; Engenharia de avaliacao ambiental no processo de concepcao de projetos de dutos da PETROBRAS - estudo de caso do Gasoduto Cacimbas (ES) - Catu (BA)

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Wilson Jose de; Pereira Junior, Edson R.; Fonseca, Renata A. Almeida; Rocha, Marcelo de Andrade; Soares, Luis Felipe [PETROBRAS Engenharia, RJ (Brazil). Engenharia de Avaliacao Ambiental

    2005-07-01

    The environmental assessment process is one of the most important phases in the implementation of pipeline projects. For that reason, new technologies and work procedures are used to perform the environmental assessment of areas where pipeways will be implemented. Since the quality of environmental assessment studies influences the social acceptance of projects and, consequently, the time required to obtain the environmental permits, PETROBRAS (Engenharia/IETEG/ETEG/EAMB) applies advanced technological tools to acquire remote sensing data (conventional / digital aero-surveys and satellite images), as well as software for digital image processing and integration and spatial analysis of information. Information about the physical, biological and socioeconomic environments are further verified and complemented through field trips using helicopters. This process makes it possible to identify environmentally favorable corridors to develop guidelines for the implementation of the pipeline, assuring its environmental feasibility, and produces relevant data to support the Environmental Impact Assessment Study, the Environmental Impact Assessment Report and the Risk Analysis Study. As an example of the application of this methodology, this paper presents results of the assessment of the Cacimbas / Catu gas pipeline, which is currently being permitted and is planned to be implemented in areas of high environmental complexity. (author)

  18. Study and Application on Pipeline Integrity Data Model in Construction Stage%建设期管道完整性数据模型及应用

    Institute of Scientific and Technical Information of China (English)

    李保吉; 冯庆善; 苗绘; 李振宇

    2015-01-01

    为解决建设期数据管理模式与管道完整性数据模型无法融合的问题,采用以建设期焊口编号与运营期内检测编号数据对齐技术,建立了建设期以质量追踪为主线的数据模型与完整性数据模型的关联关系,从而实现了管道完整性数据模型向建设期数据管理的延伸. 所提出优化数据模型实现了从钢管制造到管道报废的数据全生命周期管理,并结合实例给出了优化模型的应用方法和效果.%In order to solve the problem that data management model and pipeline integrity data model can''t fully meet in construction stage, based on construction joint number detection and operation period number data alignment technology,the rele-vance relationship between data model and integrity data model was built in the construction stage and operation stage,thus reali-zing the pipeline integrity data model to the extension of construction data management.The full life-cycle management of pipeline integrity data management is achieved, which is from rolling steel plates in factory to decommissioning, and the application meth-od and effect of the optimization model is presented combining with the examples.

  19. Identification of critical factors affecting flexibility in hospital construction projects.

    Science.gov (United States)

    Olsson, Nils E O; Hansen, Geir K

    2010-01-01

    This paper analyzes the dynamics relating to flexibility in a hospital project context. Three research questions are addressed: (1) When is flexibility used in the life cycle of a project? (2) What are the stakeholders' perspectives on project flexibility? And (3) What is the nature of the interaction between flexibility in the process of a project and flexibility in terms of the characteristics of a building? Flexibility is discussed from both a project management point of view and from a hospital architecture perspective. Flexibility in project life cycle and from a stakeholder perspective is examined, and the interaction between flexibility in scope lock-in and building flexibility is investigated. The results are based on case studies of four Norwegian hospital projects. Information relating to the projects has been obtained from evaluation reports, other relevant documents, and interviews. Observations were codified and analyzed based on selected parameters that represent different aspects of flexibility. One of the cases illustrates how late changes can have a significant negative impact on the project itself, contributing to delays and cost overruns. Another case illustrates that late scope lock-in on a limited part of the project, in this case related to medical equipment, can be done in a controlled manner. Project owners and users appear to have given flexibility high priority. Project management teams are less likely to embrace changes and late scope lock-in. Architects and consultants are important for translating program requirements into physical design. A highly flexible building did not stop some stakeholders from pushing for significant changes and extensions during construction.

  20. Project Culture in the Chinese Construction Industry: Perceptions of Contractors

    Directory of Open Access Journals (Sweden)

    Jian Zou

    2012-11-01

    Full Text Available In recent years culture has become one of the most studied topicsin project management research. Some studies have investigatedthe infl uence of culture at different levels – such as nationalculture, industry culture, organisational culture and professionalculture. As a project-based industry, the construction industryneeds to have more insight concerning cultural issues at theproject level and their infl uence on the performance of constructionprojects. Few studies, however, have focused on culture at theproject level. This paper uses a questionnaire survey to determinethe perceptions of Chinese contractors about the impact of projectculture on the performance of local construction projects. This isaugmented by a series of in-depth interviews with senior executivemanagers in the industry. The fi ndings indicate that specifi c projectculture does contribute signifi cantly towards project outcomes.In particular, goal orientation and fl exibility, as two dimensionsof project culture, have a negative statistical correlation withperceived satisfaction of the process, commercial success, futurebusiness opportunities, lessons learnt from the project, satisfactionwith the relationships, and overall performance. This paper alsoindicates that the affordability of developing an appropriate projectculture is a major concern for industry practitioners.

  1. Intelligent Materials Tracking System for Construction Projects Management

    Directory of Open Access Journals (Sweden)

    Narimah Kasim

    2015-05-01

    Full Text Available An essential factor adversely affecting the performance of construction projects is the improper handling of materials during site activities. In addition, paper-based reports are mostly used to record and exchange information related to the material components within the supply chain, which is problematic and inefficient. Generally, technologies (such as wireless systems and RFID are not being adequately used to overcome human errors and are not well integrated with project management systems to make tracking and management of materials easier and faster. Findings from a literature review and surveys showed that there is a lack of positive examples of such tools having been used effectively. Therefore, this research focused on the development of a materials tracking system that integrates RFID-based materials management with resources modelling to improve on-site materials tracking. Rapid prototyping was used to develop the system and testing of the system was carried out to examine the functionality and working appropriately. The proposed system is intended to promote the employment of RFID for automatic materials tracking with integration of resource modelling (Microsoft (R Office Project in the project management system in order to establish which of the tagged components are required resources for certain project tasks. In conclusion, the system provides an automatic and easy tracking method for managing materials during materials delivery and inventory management processes in construction projects.

  2. The Use of Project Time Management Processes and the Schedule Performance of Construction Projects in Mexico

    Directory of Open Access Journals (Sweden)

    Rómel G. Solís-Carcaño

    2015-01-01

    Full Text Available Delays have been frequently reported as the cause of several conflicts that affect the different parties involved in construction projects. Project Time Management (PTM includes a number of planning and controlling processes that are recommended for complying with requirements related to project time. The study reported in this paper aimed at assessing the use of PTM processes and its relation with project schedule performance (i.e., timely completion. Seven PTM processes and seventy-seven tasks associated with them were identified from the literature that is globally relevant to project management. The study included the assessment of fourteen school construction projects executed by a public agency in the Yucatan Peninsula, Mexico. These projects were monitored during the construction phase in order to measure two different variables: the use of processes related to PTM (i.e., schedule planning and controlling processes and the project schedule performance. For each of these projects a Use Index was obtained for assessing the first variable, while the Schedule Performance Index and the Schedule Variance were computed to assess the second one. The results demonstrated there is statistical dependence between these two variables. Most of the projects that attained timely completion also made a greater use of the PTM processes.

  3. CONSTRUCTION PROJECTS VERSUS THE PROTECTION OF NATURE AND ENVIRONMENT

    Directory of Open Access Journals (Sweden)

    Elżbieta Hanna Szafranko

    2017-02-01

    Full Text Available Construction investments are related to the economic development of each country. Expansion of towns and settlements, construction, industrial, commercial and recreational objects and the communication network is necessary and results from regional development strategies. For their implementation it is necessary to prepare the area designated for their development. In many regions of our country area suitable for construction are increasingly limited, and furthermore investors often looks for an attractive investment location. For this reason, more and more construction projects dangerously close to areas of high natural value and protected and often are entering the these areas. To minimize the negative investment impact on the environment there are developed several variants of investment. Next, assessing the positive and negative effects, we choose the best, from the point of view of the surrounding environment solution. To illustrate the procedure example of analysis using the method proposed by the author, the indicator is shown.

  4. Engineering critical assessment of PETROBRAS Camarupim pipeline

    Energy Technology Data Exchange (ETDEWEB)

    Gordon, J.R. [Microalloying International, Houston, TX (United States); Gatlin, R.W. [Global Industries, Rio de Janeiro, RJ (Brazil); Zumpano Junior, P.; Kaspary, T. [PETROBRAS S.A., Rio de Janeiro, RJ (Brazil)

    2009-12-19

    This paper presents details of an Engineering Critical Assessment (ECA) performed to develop girth weld flaw acceptance criteria for the PETROBRAS Camarupim Pipeline which was installed in Espirito Santo Basin, ES, offshore Brazil in May 2008 by Global Industries. The pipeline was constructed using 24-inch diameter API Grade X65 pipe with wall thicknesses of 0.875-inch (22.2 mm) and 1.00 inch (25.4 mm). Although the Camarupim pipeline will initially transport sweet gas there is the potential for mildly sour service operation in mid to late life. To assess the effect of sour service on the material toughness properties a series of slow strain rate fracture toughness tests were performed in a Project representative sour service environment. In addition the results of sour service fatigue crack growth tests were analyzed to develop a conservative sour service fatigue crack growth law for the ECA analysis. (author)

  5. Integrated system of competitive management as distinguishing for companies of gas pipelines networks construction; Sistema integrado de gestao como diferencial competitivo para empresas de construcao de redes de gasodutos

    Energy Technology Data Exchange (ETDEWEB)

    Menezes, Jose R.R. de; Sobral, Maria do C.M.; Silva, J.J. Rego [Universidade Federal de Pernambuco (UFPE), Recife, PE (Brazil)

    2004-07-01

    The perspective of fast and noticeable expansion of the natural gas market has stimulated investments in projects of natural gas distribution network. The roadblocks overcoming in this expansion, demands an adequate coordination between both, the environmental and power generation policy. In this article some aspects are discussed considering the integration between quality management and environment, using as a reference the NBR ISO 9001 and NBR ISO 14001 standards, which have been implemented in building companies involved in the construction of gas pipelines in urban regions. The implementation of these systems is understood as a competitive differential, contributing for companies' business strategy in a coherent way with the current concept of sustainable development. Finally, a brief model of implementation of a progressive environmental management system is presented, based on NBR ISO 14001 standards and the principles established in the System of Qualification for Companies of the Brazilian Program of the Habitat Quality and Productivity - PBQP-H. (author)

  6. ENCOAL mild coal gasification project public design and construction report

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1994-12-01

    This Public Design Report describes the 1000 ton per day ENCOAL mild coal gasification demonstration plant now in operation at the Buckskin Mine near Gillette, Wyoming. The objective of the project is to demonstrate that the proprietary Liquids From Coal (LFC) technology can reliably and economically convert low Btu PRB coal into a superior, high-Btu solid fuel (PDF), and an environmentally attractive low-sulfur liquid fuel (CDL). The Project`s plans also call for the production of sufficient quantities of PDF and CDL to permit utility companies to carry out full scale burn tests. While some process as well as mechanical design was done in 1988, the continuous design effort was started in July 1990. Civil construction was started in October 1990; mechanical erection began in May 1991. Virtually all of the planned design work was completed by July 1991. Most major construction was complete by April 1992 followed by plant testing and commissioning. Plant operation began in late May 1992. This report covers both the detailed design and initial construction aspects of the Project.

  7. Multi-person Decision Model for Unfinished Construction Project

    Directory of Open Access Journals (Sweden)

    Christiono Utomo

    2010-05-01

    Full Text Available This paper discusses a proposed model of multi-person decision on prioritizing selection with regard to continuing or terminating unfinished construction projects. This involved multiple steps including determining criteria and sub criteria, selecting and weighting of alternatives, optimizing, and analyzing coalition formation and agreement option. Criteria and sub criteria that were obtained from perspectives of 120 project managers are the first basis to construct decision hierarchy. The model is implemented in one of the biggest private construction projects in Indonesia. The implementation was based on the Analytic Hierarchy Process for multi criteria decision involving coalition and agreement options in a multi-person decision. Goal Programming was used to optimize based on cost constrains. The results demonstrate a process of multiperson decision to select priorities of each alternative to each decision and concluded that some of the projects were continued, postponed or terminated. The new direction of research presented in this paper presents some interesting challenges to those involved in modeling computer-based multi-person decision support utilizing both Multi Agent System and Multi Criteria Decision Making.

  8. Potential Effects on Large Mara Construction Projects Due To Construction Delay

    Directory of Open Access Journals (Sweden)

    M.R. Abdullah

    2009-12-01

    Full Text Available The construction industry continues to be the driving force in the growth of the nation’s socio economic development. One of the major issues in large construction industry is its frequent delay where this delay decelerates the multiplier effects to the economy. This paper presents the study of a survey on significant cause of delay and its effects in large MARA (Majlis Amanah Rakyat construction project in the views of project management consultants (PMC. Respondents of this survey were personnel that work as PMC ranging from the executives, managerial and supporting groups. The result revealed that the five most significant delay causes as seen by PMC were cash flow and financial difficulties faced by contractors, contractor’s poor site management, inadequate contractor experience, shortage of site workers and ineffective planning and scheduling by contractors and its three most significant effects were time overrun, cost overrun and arbitration. Hopefully, the findings of this study will at least shade some lights to the problems faced by Malaysia construction industry particularly MARA large construction project and effort can be taken to improve it.

  9. The Application of Orbital Method with the Floating Method of Pipeline Construction Technology in Mudflats and Swamp Area%轨道法与浮游法管道施工技术在滩涂及沼泽地段的应用

    Institute of Scientific and Technical Information of China (English)

    衣国辉; 王海

    2014-01-01

    中缅油气管道工程(缅甸段)管道沿线,通过的8条大中型海沟两侧中间的滩涂、沼泽地段无可利用的进场道路。对这些地段管道施工,宜采用浮游法等特殊施工方法。本文就5#海沟穿越管道采用轨道法与浮游法相结合进行了论述。%Along the pipeline of China and Myanmar oil and gas pipeline project (Myanmar section), through the middle of mudflats and swamp area on both sides of eight large and med-ium-sized oceanic trenches with no useful access road. On the-se sections of pipeline construction, the special construction methods such as the floating method should be taken. In this article, the author discusses the 5 # trench crossing pipeline ad-opt the orbital method combines with the floating method.

  10. The Technical Specification and Physical Performance Level of Line Pipes for West-East Gas Pipeline

    Institute of Scientific and Technical Information of China (English)

    FengBin; WangMaotang; LiuFangming; XiaoLiming

    2004-01-01

    The west-east gas transmission engineering is an important project attracting domestic and foreign attention. The gas pipeline used in this project is a gas pipeline with the longest distance, largest pipe diameter and highest transmission pressure in the history of petroleum pipeline construction of China. For the construction of top-rank gas pipeline in the world with high standard, high speed and high benefit, the key of specifying production of metallurgical and pipe-making enterprises and ensuring quality performance of the steel and steel pipe is to research and formulate a feasible and satisfactory technical Specification for engineering steel and steel pipe with international level. In this paper the author introduces the establishment of the technical specification for West-East gas pipeline project, and lays emphasis on the analysis and discussion of principle and method determining major technical indexes related to line pipes for West-East gas pipeline. The author also introduces actual material selection of gas pipeline home and abroad, and presents examination and application of the technical specification for West-East gas pipeline.

  11. Financing is next step in Brazil-Bolivia natural gas project. [Economic costs and benefits of a new natural gas pipeline project

    Energy Technology Data Exchange (ETDEWEB)

    Cajueiro Costa, A.S. (Petroleo Brasileiro, Rio de Janeiro (Brazil))

    1993-11-01

    This paper reviews a new four billion dollar arrangement which would start a major gas network between Brazil and Bolivia. The proposed 2,200 mile long, 28 and 14 inch pipeline network would connect Bolivian reserves with the undeserved markets of southern Brazil. The paper briefly reviews the economic involvement and impacts on both countries and the current market for natural gas in Brazil. Because most of Brazil's energy is currently from hydroelectric power or petroleum, the new distribution network will have dramatic effects on industries which need this high-grade fuel source for operation. Financing of this project will be by Petrobras and 49 percent through stock options.

  12. Ranking the Project Management Success Factors for Construction Project in South India

    Science.gov (United States)

    Aneesha, K.; Haridharan, M. K.

    2017-07-01

    In Today’s construction industry, to achieve a greater advantage over the firms, success of each project and efficiency is required. Effective Project Management overcomes these types of challenges. This study identifies the success factors which are important for project management in construction project success. From the literature review, 26 factors were found to be critical. Project managers, construction managers, civil engineers, contractors and site engineers were the respondents. After analyzing the data in SPSS software, the dominant factors from the regression analysis are top management support, competent project team, abilities to solve problems, realistic cost and time estimates, information/communication, competency of the project manager are the 6 factors out of 12 in 26 factors. Effective communication between stakeholders got highest priority and client involvement, good leadership, clarity of project goals got second priority. Informal communication gives better results compared to formal communications like written formats. To remove communication barrier with the stakeholders, informal communication like speaking face-to-face with the language this fits for the stakeholders.

  13. Fuzzy MCDM Model for Risk Factor Selection in Construction Projects

    Directory of Open Access Journals (Sweden)

    Pejman Rezakhani

    2012-11-01

    Full Text Available Risk factor selection is an important step in a successful risk management plan. There are many risk factors in a construction project and by an effective and systematic risk selection process the most critical risks can be distinguished to have more attention. In this paper through a comprehensive literature survey, most significant risk factors in a construction project are classified in a hierarchical structure. For an effective risk factor selection, a modified rational multi criteria decision making model (MCDM is developed. This model is a consensus rule based model and has the optimization property of rational models. By applying fuzzy logic to this model, uncertainty factors in group decision making such as experts` influence weights, their preference and judgment for risk selection criteria will be assessed. Also an intelligent checking process to check the logical consistency of experts` preferences will be implemented during the decision making process. The solution inferred from this method is in the highest degree of acceptance of group members. Also consistency of individual preferences is checked by some inference rules. This is an efficient and effective approach to prioritize and select risks based on decisions made by group of experts in construction projects. The applicability of presented method is assessed through a case study.

  14. Application of Project Scheduling in Agriculture (Case Study: Mechanized Greenhouses Construction Project

    Directory of Open Access Journals (Sweden)

    Nasim Monjezi

    2012-02-01

    Full Text Available PERT is an acronym for Project Evaluation and Review Technique. It provides a method of modeling, simulating and solving a wide range of simplex large-scale system problems. In this paper, project scheduling in agriculture, for mechanized greenhouses construction in the Khuzestan province of Iran, is carried out by PERT method. The operation of allocating resources to activities was carried out by means of breaking the basic activities of the project into smaller ones. Network models are increasingly powerful tool for modeling, scheduling, planning, controlling, and analyzing of agricultural projects. The generated PERT network model is a powerful tool to help manager who could able to make optimum decision.

  15. Critical Success Factors for Malaysian Construction Projects: An Investigative Review

    Directory of Open Access Journals (Sweden)

    Yee Cheong Yong

    2017-05-01

    Full Text Available Construction projects play an important role in the advancement of a nation through infrastructure development that leads to economic growth. They are planned carefully to accomplish certain goals. However, not all the projects achieved the goals as per planned. Many factors contribute to the successes and failures, and it becomes an interesting arena for research. The primary objective of this paper is to outline the development trend of project success measurement globally and locally. The research method employed was to make selected reviews on critical success factors' (CSFs literature and to compare international standards and progress in incorporating human behavioural aspects of project management to the situation in Malaysia. A somewhat similar pattern can be observed in Malaysia where the studies have departed from the usual criteria of time, cost and quality, to define project success in a more holistic way. However, the domestic industry has failed to respond to the emerging trend globally as there has yet been any widely published research on the importance of human-related factors towards project success. A consolidated framework of CSFs has therefore, been proposed in responding to the findings. This paper fulfils an identified need as there has been a dearth of research on the subject matter locally.

  16. 42 CFR 137.275 - May Self-Governance Tribes include IHS construction programs in a construction project agreement...

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 1 2010-10-01 2010-10-01 false May Self-Governance Tribes include IHS construction... OF HEALTH AND HUMAN SERVICES TRIBAL SELF-GOVERNANCE Construction Purpose and Scope § 137.275 May Self-Governance Tribes include IHS construction programs in a construction project agreement or in a...

  17. Comprehensive long distance and real-time pipeline monitoring system based on fiber optic sensing

    Energy Technology Data Exchange (ETDEWEB)

    Nikles, Marc; Ravet, Fabien; Briffod, Fabien [Omnisens S.A., Morges (Switzerland)

    2009-07-01

    An increasing number of pipelines are constructed in remote regions affected by harsh environmental conditions. These pipeline routes often cross mountain areas which are characterized by unstable grounds and where soil texture changes between winter and summer increase the probability of hazards. Due to the long distances to be monitored and the linear nature of pipelines, distributed fiber optic sensing techniques offer significant advantages and the capability to detect and localize pipeline disturbance with great precision. Furthermore pipeline owner/operators lay fiber optic cable parallel to transmission pipelines for telecommunication purposes and at minimum additional cost monitoring capabilities can be added to the communication system. The Brillouin-based Omnisens DITEST monitoring system has been used in several long distance pipeline projects. The technique is capable of measuring strain and temperature over 100's kilometers with meter spatial resolution. Dedicated fiber optic cables have been developed for continuous strain and temperature monitoring and their deployment along the pipeline has enabled permanent and continuous pipeline ground movement, intrusion and leak detection. This paper presents a description of the fiber optic Brillouin-based DITEST sensing technique, its measurement performance and limits, while addressing future perspectives for pipeline monitoring. (author)

  18. Developing a took for project contingency estimation in a large portfolio of construction projects

    Directory of Open Access Journals (Sweden)

    Van Niekerk, Mariette

    2014-11-01

    Full Text Available To enable the management of project-related risk on a portfolio level in an owner organisation, project contingency estimation should be performed consistently and objectively. This article discusses the development of a contingency estimation tool for a large portfolio that contains similar construction projects. The purpose of developing this tool is to decrease the influence of subjectivity on contingency estimation methods throughout the project life cycle, thereby enabling consistent reflection on project risk at the portfolio level. Our research contribution is the delivery of a hybrid tool that incorporates both neural network modelling of systemic risks and expected value analysis of project-specific risks. The neural network is trained using historical project data, supported by data obtained from interviews with project managers. Expected value analysis is achieved in a risk register format employing a binomial distribution to estimate the number of risks expected. By following this approach, the contingency estimation tool can be used without expert knowledge of project risk management. In addition, this approach can provide contingency cost and duration output on a project level, and it contains both systemic and project-specific risks in a single tool.

  19. Construction, repair and maintenance

    Energy Technology Data Exchange (ETDEWEB)

    Hinger, R. [Terasen Pipelines, Calgary, AB (Canada); Wong, P. [KC Integrity Corp., Calgary, AB (Canada); Yeomans, M.; Glover, A. [TransCanada PipeLines Ltd., Calgary, AB (Canada)

    2003-07-01

    The presentations by Working Group 4 focused on construction, repair and maintenance of pipelines with particular reference to high-strength steels and their applications for natural gas transmission pipelines. Discussions focused on how technology can be used to provide cost-effective design and construction solutions for long distance pipelines in a manner that does not compromise safety and reliability. The role that carbon plays in increasing the toughness of steel was also discussed. A few fundamental changes in steel production technology and a reduction in carbon content can result in a simultaneous increase in strength and toughness of steels. The cost impact of this technology was summarized. It was concluded that high strength steels offer effective solutions to deliver cost-effective pipelines to transport natural gas from northern basins. This session also presented pipeline routes that transport diluted bitumens from the Athabasca Oil Sands Project and the Muskeg River Mine to upgrader facilities in Alberta. Construction issues included design conservatism, water course crossings, winter construction, winter ditching, and public consultation. Examples of high strength steel pipe applications were also included with reference to experience gained by TransCanada and Corridor Pipeline. tabs., figs.

  20. Construction and startup experience for Milliken FGD Retrofit Project

    Energy Technology Data Exchange (ETDEWEB)

    Harvilla, J.; Mahlmeister, M. [New York State Electric and Gas Corp., Binghamton, NY (United States); Buchanan, T.; Jackson, C. [Parsons Power Group, Inc., Reading, PA (United States); Watts, J. [USDOE, Pittsburgh Energy Technology Center, PA (United States)

    1996-12-01

    Under Round 4 of the U.S. Department of Energy`s Clean Coal Technology program, New York State Electric & Gas Corp. (NYSEG), in partnership with Saarbereg-Stebbins Engineering and Manufacturing Company, has retrofitted a formic acid enhanced forced oxidation wet limestone scrubber on Units 1 & 2 at the Milliken Steam Electric Station. Units 1 & 2 are 1950`s vintage Combustion Engineering tangentially fired pulverized coal units which are rated at nominal 150 MW each and operate in balanced draft mode. The FGD system for Unit 2 was placed into operation in January 1995 and the Unit 1 system in June, 1995. The project incorporates several unique aspects including low pH operation, a ceramic tile-lined cocurrent/countercurrent, split module absorber, a wet stack supported on the roof of the FGD building, and closed loop, zero liquid discharge operation producing commercial grade gypsum, and calcium chloride brine. The project objectives include 98% SO{sub 2} removal efficiency while burning high sulfur coal, the production of marketable byproducts to minimize solid waste disposal, zero wastewater discharge and space-saving design. The paper provides a brief overview of the project design, discusses construction and startup issues and presents early operating results. Process capital cost and economics of this design, procure and construct approach are reviewed relative to competing technologies.

  1. Community health outreach program of the Chad-Cameroon petroleum development and pipeline project.

    Science.gov (United States)

    Utzinger, Jürg; Wyss, Kaspar; Moto, Daugla D; Tanner, Marcel; Singer, Burton H

    2004-02-01

    A critical appraisal has been presented of the CHOP for a large-scale energy infrastructure development project that was implemented in two of the world's poorest countries. The project is under close scrutiny from various independent monitoring groups, civil society organizations, and human rights groups. Reviewing the achievements and shortcomings permits the extraction of important lessons that will be critical for the future adoption of the CHOP in the current setting and for the implementation of additional CHOPs elsewhere in the developing world. The authors believe that the design must be flexible, efficient, and innovative so that a CHOP promptly can address pressing public health issues as they arise (eg, epidemic outbreak) and include the needs and demands of the concerned communities. An innovative feature of the current project is the high degree and mix of public-private partnerships. The project's CHOP also relies on partnerships. As elaborated elsewhere, public-private partnerships should be seen as a social experiment--they reveal promise but are not the solution for every problem. For this CHOP, the focus is on partnerships between a multinational consortium, government agencies, and international organizations. The partnerships also include civil society organizations for monitoring and evaluation and local NGOs designated for the implementation of the selected public health interventions within the CHOP. The governments and their respective health policies often form the umbrella under which the partnerships operate. With the increase in globalization, however, the importance and capacities of governments have diminished, and there is growing private-sector involvement. Private enterprise is seen as an efficient, innovative, pragmatic, and powerful means to achieve environmental and social sustainability. Experiences with the partnership configurations in the current CHOP are of importance for tackling grand challenges in global health by

  2. Economic and Strategic Expectations from Trans Anatolian Natural Gas Pipeline Project

    Directory of Open Access Journals (Sweden)

    Elchin Suleymanov

    2016-12-01

    Full Text Available Following the successful implementation of the oil strategy, Azerbaijan began to define strategic objectives in relation to gas export policy. Currently, Azerbaijan is the only country in the region exporting gas to the international markets (Turkey, Russia, Georgia. For this reason, it is seen as “the provider and participant” of Southern Gas Corridor by EU. In this direction, Azerbaijan aims to be the country of an important and strategic natural gas exporter. From Shahdeniz field to the end European user, it targets to take part in the every ring of the value chain. These assumptions bring Azerbaijan to the position of a remarkable natural gas supplier for the export of large amount of gas to the European markets through Nabucco West. The implementation of the project with financial and technical capabilities of Azerbaijan and Turkey has made it a project to be realized between Turkey-Azerbaijan. TANAP means Turkey and Azerbaijan will emerge together in the European market for energy transportation. Along with Baku-Tbilisi-Ceyhan and Baku-Tbilisi-Erzurum, TANAP has reinforced Turkey’s position as a necessary energy corridor in delivering the energy resources of the Caspian Sea to the Western markets. In this paper, expected strategic and economic outcomes of TANAP are analyzed.

  3. Optimizing strategy software for repetitive construction projects within multi-mode resources

    OpenAIRE

    Remon Fayek Aziz

    2013-01-01

    Estimating tender data for specific project is the most essential part in construction areas as of contractor’s view such as: proposed project duration with corresponding gross value and cash flows. This paper focuses on how to calculate tender data using Optimizing Strategy Software (OSS) for repetitive construction projects with identical activity’s duration in case of single number of crew such as: project duration, project/bid price, project maximum working capital, and project net presen...

  4. Selecting the right collaborative components in a construction project

    DEFF Research Database (Denmark)

    Bohnstedt, Kristian Ditlev; Wandahl, Søren

    2017-01-01

    Regardless of context and scope, collaboration is consistently attributed to be an essential determinant of success in construction projects. Researches have long been concerned with the issue of poor collaboration, but situational determination of collaborative components has been overlooked....... The questionnaire was distributed electronically to 440 respondents; after sorting a total of 288 valid responses were obtained. The result is a set of components in a model of structures of collaboration that facilitates a more efficient and effective situational collaboration (EESC), it is denoted as target areas...

  5. Genetic algorithm-based multi-objective model for scheduling of linear construction projects

    OpenAIRE

    Senouci, Ahmed B.; Al-Derham, H.R.

    2007-01-01

    This paper presents a genetic algorithm-based multi-objective optimization model for the scheduling of linear construction projects. The model allows construction planners to generate and evaluate optimal/near-optimal construction scheduling plans that minimize both project time and cost. The computations in the present model are organized in three major modules. A scheduling module that develops practical schedules for linear construction projects. A cost module that computes the project's c...

  6. Magnitude of Construction Cost and Schedule Overruns in Public Work Projects

    OpenAIRE

    Pramen P. Shrestha; Burns, Leslie A.; Shields, David R.

    2013-01-01

    This study analyzed 363 Clark County Department of Public Works (CCDPW) projects to determine construction cost and schedule overruns in various types and sizes of the projects. The sample projects were constructed from 1991 to 2008, with a total construction cost of $1.85 billion, equivalent to 2012 cost. A one-factor ANOVA test was conducted to determine whether construction cost and schedule overruns significantly varied based on types and sizes of the projects. The study showed that lar...

  7. Fuzzy Optimization of Construction Engineering Project Schedule Based on Critical Chain Management

    OpenAIRE

    Liu, Jianbing; Ren, Hong; Junshu DU

    2013-01-01

    Critical chain management was the very important theory innovation in the development of construction project schedule management field in recent years. Compared with the traditional methods of construction project schedule management, the methods of critical chain management considered resource constraints into construction project schedule management, the construction project cycle was shortened and the efficiency was enhanced by using the dynamic thinking and circulation pattern to manage ...

  8. 42 CFR 137.362 - May construction project agreements be amended?

    Science.gov (United States)

    2010-10-01

    ... INDIAN HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES TRIBAL SELF-GOVERNANCE Construction Roles of the Secretary in Establishing and Implementing Construction Project Agreements § 137.362 May... Secretary to amend a construction project agreement to include additional projects. In addition, amendments...

  9. 48 CFR 236.274 - Restriction on acquisition of steel for use in military construction projects.

    Science.gov (United States)

    2010-10-01

    ... of steel for use in military construction projects. 236.274 Section 236.274 Federal Acquisition....274 Restriction on acquisition of steel for use in military construction projects. In accordance with..., Division E), do not acquire, or allow a contractor to acquire, steel for any construction project...

  10. Technological and regulatory aspects of quality management during the life cycle of investment and construction projects

    OpenAIRE

    Kropyvko Serhii Maksymovych

    2016-01-01

    The division of the life cycle of investment and construction projects in four phases, based on their technological features, is proposed in the article. Regulatory aspects of quality management during each phase of the life cycle of investment and construction projects are analyzed. The model of quality management during the phases of the life cycle of investment and construction project is developed.

  11. Defense Infrastructure: DOD Needs Clearer Guidance on Notifying Congress of Privately Financed Construction Projects

    Science.gov (United States)

    2017-01-01

    DEFENSE INFRASTRUCTURE DOD Needs Clearer Guidance on Notifying Congress of Privately Financed Construction Projects...Guidance on Notifying Congress of Privately Financed Construction Projects What GAO Found The Department of Defense (DOD) has issued Instruction...have generally followed the reporting guidance for major commissary surcharge and nonappropriated fund construction projects (those with a

  12. Construction Project Leadership from the Perspective of Islam

    National Research Council Canada - National Science Library

    Muhamad Rosdi Senam; Khairuddin Abdul Rashid; Azila Ahmad Sarkawi; Rapiah Mohd Zaini

    2014-01-01

    ... leaders and project managers today. Researchers in project management literature calls for more project leadership research as leadership now is increasingly recognised as project success factor...

  13. 77 FR 66580 - Notice of Availability of the Record of Decision (ROD) for the Gulf Coast Pipeline Project

    Science.gov (United States)

    2012-11-06

    ... this approximately 480 mile pipeline from Cushing, Oklahoma, to Nederland, Texas. This is in accordance... approximately 478-mile long ``Gulf Coast'' segment from Cushing, Oklahoma to Nederland, Texas; and the...

  14. 钢套钢直埋蒸汽(热水)保温管道施工技术%Construction Technology of the Steel Buried Steam (Hot Water) Heat Preservation Pipeline with Steel Casing

    Institute of Scientific and Technical Information of China (English)

    彭平

    2014-01-01

    This paper from aspects as the deepening design, prefabrication, pipeline surveying and trench excavation, pipe welding, testing and cleaning introduces the steel casing buried steam (hot water) heat preservation pipeline construction. The construction has reasonable and advanced process, good effect.%本文从深化设计、工厂化预制、管线测量和管沟开挖、管道焊接、试验和清洗等方面介绍了钢套钢直埋蒸汽(热水)保温管道施工。其施工工艺合理先进,效果良好。

  15. Individual Learning in Construction Projects: Professions and their Approaches

    Directory of Open Access Journals (Sweden)

    Ingeborg Wasif

    2010-10-01

    Full Text Available New materials, use of sophisticated technologies and increased customer demands, in combination with growing competition among construction companies, have led to a high organizational boundaries. The results indicate that personal networks are the most common source of learning for all professions. While clients, architects, and designers also engage in reading and attending courses, site managers and workers are less engaged in these activities. Experimenting and organizing for learning appear to be underutilized strategies by all professions. This leads to the conclusion that attempts to increase learning have to address the differences in learning behaviours of the various groups. Further, focus on experimenting and organizing for learning is a possibility to change the learning behaviour from learning as a consequence of problems to learning for future improvement.degree of specialization. For successful integration of the different professional specialists, there is a need for shared learning between project co-workers. Based on twenty eight interviews in six different Swedish construction projects, this paper illustrates strategies for individual and shared learning, among different actors and across various

  16. Constructing Projection Frequent Pattern Tree for Efficient Mining

    Institute of Scientific and Technical Information of China (English)

    XiangJian-wen; HeYan-xiang; KokichiFutatsugi; KongWei-qiang

    2003-01-01

    Frequent Pattern mining plays an essential role in data mining.Most of the previous studies adopt an Apriori-like candidate set generation-and-test approach. However, candidate set generation is still costly, especially when there exist prolific patterns and/or long patterns. In this study, we introduce a novel frequent pattern growth (FP-growth)method, which is efficient and scalable for mining both long and short frequent patterns without candidate generation. And build a new projection frequent pattern tree (PFP-tree) algorithm on this study, which not only heirs all the advantages in the FP-growth method, but also avoids it's bottleneck in database size dependence when constructing the frequent pattern tree (FP-tree). Efficiency of mining is achieved by introducing the projection technique, which avoid serial scan each frequent item in the database, the cost is mainly related to the depth of the tree, namely the number of frequent items of the longest transaction in the database, not the sum of all the frequent items in the database,which hugely shortens the time of tree-construction. Our performance study shows that the PFP-tree method is efficient and scalable for mining large databases or data warehouses, and is even about an order of magnitude faster than the FP-growth method.

  17. Constructing Projection Frequent Pattern Tree for Efficient Mining

    Institute of Scientific and Technical Information of China (English)

    Xiang Jian-wen; He Yan-xiang; Kokichi Futatsugi; Kong Wei-qiang

    2003-01-01

    Frequent Pattern mining plays an essential role in data mining.Most of the previous studies adopt an Apriori-like candidate set generation-and-test approach. However, candidate set generation is still costly, especially when there exist prolific patterns and/or long patterns.In this study, we introduce a novel frequent pattern growth (FP-growth)method, which is efficient and scalable for mining both long and short frequent patterns without candidate generation. And build a new projection frequent pat-tern tree (PFP-tree) algorithm on this study, which not only heirs all the ad-vantages in the FP-growth method, but also avoids it's bottleneck in database size dependence when constructing the frequent pattern tree (FP-tree). Effi-ciency of mining is achieved by introducing the projection technique, which avoid serial scan each frequent item in the database, the cost is mainly related to the depth of the tree, namely the number of frequent items of the longest trans-action in the database, not the sum of all the frequent items in the database,which hugely shortens the time of tree-construction. Our performance study shows that the PFP-tree method is efficient and scalable for mining large databas-es or data warehouses, and is even about an order of magnitude faster than the FP-growth method.

  18. Optimizing strategy for repetitive construction projects within multi-mode resources

    Directory of Open Access Journals (Sweden)

    Remon Fayek Aziz

    2013-03-01

    Full Text Available Estimating tender data for specific project is the most essential part in construction areas as of a contractor’s view such as: proposed project duration with corresponding gross value and cash flows. Cash flow analysis of construction projects has a long history and has been an important topic in construction management. Determination of project cash flows is very sensitive, especially for repetitive construction projects. This paper focuses on how to calculate tender data for repetitive construction projects such as: project duration, project cost, project/bid price, project cash flows, project maximum working capital and project net present value that is equivalent to net profit at the beginning of the project. A simplified multi-objective optimization formulation will be presented that creates best tender data to contractor comparing with more feasible options that are generated from multi-mode resources in a given project. This mathematical formulation is intended to give more scenarios which provide a practical support for typical construction contractors who need to optimize resource utilization in order to minimize project duration, project/bid price and project maximum working capital while maximizing its net present value simultaneously. At the end of the paper, an illustrative example will be presented to demonstrate the applications of proposed technique to an optimization expressway of repetitive construction project.

  19. Slurry pipeline technology: an overview

    Energy Technology Data Exchange (ETDEWEB)

    Chapman, Jay P. [Pipeline Systems Incorporated (PSI), Belo Horizonte, MG (Brazil); Lima, Rafael; Pinto, Daniel; Vidal, Alisson [Ausenco do Brasil Engenharia Ltda., Nova Lima, MG (Brazil). PSI Div.

    2009-12-19

    Slurry pipelines represent an economical and environmentally friendly transportation means for many solid materials. This paper provides an over-view of the technology, its evolution and current Brazilian activity. Mineral resources are increasingly moving farther away from ports, processing plants and end use points, and slurry pipelines are an important mode of solids transport. Application guidelines are discussed. State-of-the-Art technical solutions such as pipeline system simulation, pipe materials, pumps, valves, automation, telecommunications, and construction techniques that have made the technology successful are presented. A discussion of where long distant slurry pipelines fit in a picture that also includes thickened and paste materials pipe lining is included. (author)

  20. Benefits of Building Information Modelling in the Project Lifecycle: Construction Projects in Asia

    Directory of Open Access Journals (Sweden)

    Jian Li

    2014-08-01

    Full Text Available Building Information Modelling (BIM is a process involving the creation and management of objective data with property, unique identity and relationship. In the Architecture, Engineering and Construction (AEC industry, BIM is adopted a lot in the lifecycle of buildings because of the high integration of information that it enables. Four-dimensional (4D computer-aided design (CAD has been adopted for many years to improve the construction planning process. BIM is adopted throughout buildings’ lifecycles, in design, construction and operation. This paper presents five large-scale public and financial projects that adopt BIM in the design, construction and operational phases. Different uses of BIM are compared and contrasted in the context of the separate backgrounds. It is concluded that productivity is improved where BIM is used to enable easy sharing and integration of information and convenient collaboration.

  1. 78 FR 23554 - Sierrita Gas Pipeline LLC; Supplemental Notice of Intent To Prepare an Environmental Impact...

    Science.gov (United States)

    2013-04-19

    ... operation of facilities by Sierrita Gas Pipeline LLC (Sierrita) in Pima County, Arizona (the project was... process to determine whether the Project is in the public convenience and necessity. The Commission staff... construction of two meter stations and various other appurtenant facilities in Pima County, Arizona....

  2. Identifying Contractors’ Planned Quality Costs in Indonesian Construction Projects

    Directory of Open Access Journals (Sweden)

    Puti F. Marzuki

    2014-12-01

    Full Text Available In a very competitive construction industry, quality costs have to be measured to be able to identify potential quality problem areas and to focus attention on work output improvement opportunities. The awareness of contractors on the importance of quality costs could be reflected in the extent of their quality costs planning. This paper presents an identification of planned quality costs in three construction projects executed by two large Indonesian contractors, a state-owned company and a private company in Jakarta. The objective is to enable the contractors to elaborate their quality costs planning and thereby improve their work output based on the findi ngs. Quality costs are first grouped into three categories: prevention, appraisal, and failure costs. Based on the works of previous researchers, a list of quality management activities that should be covered in each quality costs category is then created. The contractors’ planned quality costs data for each category are identified and collected through interviews and questionnaire surveys that refer to the list. Quality costs are expressed as a percentage of contract value. It is revealed that although large contractors already have certain knowledge on quality costs in construction projects, these costs are not planned in a structured way through an analysis of systematic quality costs records. Through cost categorization it is also shown that higher prevention and appraisal costs lead to lower failure costs. It is then concluded that a lot of work is still to be done by the contractors to set up a quality costs recording system which can serve as a basis for their quality improvement planning.

  3. Effectiveness of Project Teams and their Impact on the Performance of Saudi Construction Projects

    Directory of Open Access Journals (Sweden)

    Sadi Assaf

    2014-06-01

    Full Text Available The objective of this study is to determine the nature and strength of relationship between the different elements of teamwork effectiveness and overall project success. Literature has been reviewed on constituents of effective teamwork and indicators for project success to determine the relationship. Two questionnaires were used to determine the nature and strength of the relationship between components of effective teamwork and overall project success. Data on the questionnaires were gathered from 13 different project teams of large commercial buildings in Saudi Arabia. The research showed a positive and high correlation between team effectiveness and project success. Analysis of the obtained data indicated that three factors of teamwork are strongly associated with project success. These factors are team roles and responsibilities, team goals and objectives and team leadership. The research conducted is most beneficial for project managers and team leaders in construction organizations to adjust their focus on key components of effective teamwork that lead to augment the possibilities of project success.

  4. Leadership Pipeline

    DEFF Research Database (Denmark)

    Elmholdt, Claus Westergård

    2012-01-01

    Artiklen analyserer grundlaget for Leadership Pipeline modellen med henblik på en vurdering af substansen bag modellen, og perspektiverne for generalisering af modellen til en dansk organisatorisk kontekst.......Artiklen analyserer grundlaget for Leadership Pipeline modellen med henblik på en vurdering af substansen bag modellen, og perspektiverne for generalisering af modellen til en dansk organisatorisk kontekst....

  5. Architect Critical Challenges as a Project Manager in Construction Projects: A Case Study

    Directory of Open Access Journals (Sweden)

    Mohammadreza Yadollahi

    2014-01-01

    Full Text Available All construction professionals such as civil, mechanical, and electrical engineers, quantity surveyors, and architects have important roles in the construction process. Among these, architects are frequently appointed as a project manager (PM. The role of a PM will drive the success of the projects implementation. Therefore, the capability of an architect as a PM (ArPM is critical in reducing challenges encountered. Accordingly, the identification of these challenges is an important task in selecting an appropriate ArPM. The aim of this study is to identify the most critical challenges faced by an ArPM for construction projects. The data were collected through questionnaires and interviews with architects and professionals in the Malaysian construction industry. Because of the fuzziness and uncertainty of subjective responses, Fuzzy Set Ttheory is applied to identify critical challenges. A total of 65 questionnaires were distributed and 36 questionnaires were returned. The results revealed that the critical challenges faced by an ArPM are “poor planning,” “unfamiliar technology,” “unfamiliarity with green buildings and materials,” “inappropriate scheduling,” and “poor workmanship.” All critical challenges were then categorized into six main groups including technical, managerial, personal skills, contractual, psychological, and financial.

  6. Multi-model-based Access Control in Construction Projects

    CERN Document Server

    Hilbert, Frank; Araujo, Larissa; 10.4204/EPTCS.83.1

    2012-01-01

    During the execution of large scale construction projects performed by Virtual Organizations (VO), relatively complex technical models have to be exchanged between the VO members. For linking the trade and transfer of these models, a so-called multi-model container format was developed. Considering the different skills and tasks of the involved partners, it is not necessary for them to know all the models in every technical detailing. Furthermore, the model size can lead to a delay in communication. In this paper an approach is presented for defining model cut-outs according to the current project context. Dynamic dependencies to the project context as well as static dependencies on the organizational structure are mapped in a context-sensitive rule. As a result, an approach for dynamic filtering of multi-models is obtained which ensures, together with a filtering service, that the involved VO members get a simplified view of complex multi-models as well as sufficient permissions depending on their tasks.

  7. Multi-model-based Access Control in Construction Projects

    Directory of Open Access Journals (Sweden)

    Frank Hilbert

    2012-04-01

    Full Text Available During the execution of large scale construction projects performed by Virtual Organizations (VO, relatively complex technical models have to be exchanged between the VO members. For linking the trade and transfer of these models, a so-called multi-model container format was developed. Considering the different skills and tasks of the involved partners, it is not necessary for them to know all the models in every technical detailing. Furthermore, the model size can lead to a delay in communication. In this paper an approach is presented for defining model cut-outs according to the current project context. Dynamic dependencies to the project context as well as static dependencies on the organizational structure are mapped in a context-sensitive rule. As a result, an approach for dynamic filtering of multi-models is obtained which ensures, together with a filtering service, that the involved VO members get a simplified view of complex multi-models as well as sufficient permissions depending on their tasks.

  8. Integrity management of Brazil-Bolivia gas pipeline to reduce risks due third party damage

    Energy Technology Data Exchange (ETDEWEB)

    Vasconcellos, Carlos Renato Aragonez de; Monte, Oswaldo [PETROBRAS, Rio de Janeiro, RJ (Brazil); Colen, Eustaquio; Cunha, Roberto de Souza; Oliveira, Hudson Regis de [Transportadora Brasileira Gasoduto Bolivia-Brasil, S.A., Rio de Janeiro, RJ (Brazil); Lima, Rogerio de Souza [RSL Consultoria Geoprojetos (Brazil); Schultz Neto, Walter [Milton Braga Assessoria Tecnica (Brazil)

    2005-07-01

    The Bolivia-Brazil Natural Gas Pipeline has 2.600 kilometers from Rio Grande City in Bolivia to Canoas City, in the south of Brazil. The right-of-way crosses a lot of types of topography and areas subjected to various kinds of anthropological actions, like areas in class locations 3, locals under agricultural activities, forests and minerals explorations, and near constructions of highway and railway, industrial constructions, new pipelines in the same right-of -way, channels, dams, that requires special projects to avoid that the gas pipeline could be subject to strengths that were not consider in the original design. The aim of this paper is to present the jobs developed by TBG during seven years of gas pipeline operations, as public awareness program, procedures to design, construct and inspect specials constructions along and near the right-of -way, control of mineral and forest explorations, monitoring and controlling of excavations on the right-of-way to install new pipelines and optical cables, to reduce risks of gas pipeline damage due third party, as a component of TBG' Managing Integrity Gas Pipeline Program. (author)

  9. The Bank of Westminster and Hyland Park Construction Contracts as Engineering Student Classroom Projects; Construction Phase.

    Science.gov (United States)

    1984-12-13

    of the Bank of Westminster project as compared to other’projects. % * - ’ Laurence E. Reiner, Handbook for Construction Management (Englewood Cliffs...rA,,j II d~jI4 c OA, Pm M^,#fA T &,AO ’.\\&Jr~rS C-Act..PH0NE e..P L o j Loc 0/Z CALLeD Ree #, Lgsoi biw - Stio 0 F64Y 7A,.Xeb 7a Ao1-Pg*y PACAVAT.,oM...SUPPLIER REMARKS -5; I -1g 5 LIW -Q I Ph4CI- r1,0𔃺. PbADY 37 ~~R 48R*J -AAkD PfnRLJM% t,17rM 22T .8A7’ra1 IkAM Couc.. ~ bjw 5~~ ree 79.A.uw LifA

  10. Magnitude of Construction Cost and Schedule Overruns in Public Work Projects

    Directory of Open Access Journals (Sweden)

    Pramen P. Shrestha

    2013-01-01

    Full Text Available This study analyzed 363 Clark County Department of Public Works (CCDPW projects to determine construction cost and schedule overruns in various types and sizes of the projects. The sample projects were constructed from 1991 to 2008, with a total construction cost of $1.85 billion, equivalent to 2012 cost. A one-factor ANOVA test was conducted to determine whether construction cost and schedule overruns significantly varied based on types and sizes of the projects. The study showed that large, long-duration projects had significantly higher cost and schedule overruns than smaller, short-duration projects.

  11. Overview of interstate hydrogen pipeline systems.

    Energy Technology Data Exchange (ETDEWEB)

    Gillette, J .L.; Kolpa, R. L

    2008-02-01

    The use of hydrogen in the energy sector of the United States is projected to increase significantly in the future. Current uses are predominantly in the petroleum refining sector, with hydrogen also being used in the manufacture of chemicals and other specialized products. Growth in hydrogen consumption is likely to appear in the refining sector, where greater quantities of hydrogen will be required as the quality of the raw crude decreases, and in the mining and processing of tar sands and other energy resources that are not currently used at a significant level. Furthermore, the use of hydrogen as a transportation fuel has been proposed both by automobile manufacturers and the federal government. Assuming that the use of hydrogen will significantly increase in the future, there would be a corresponding need to transport this material. A variety of production technologies are available for making hydrogen, and there are equally varied raw materials. Potential raw materials include natural gas, coal, nuclear fuel, and renewables such as solar, wind, or wave energy. As these raw materials are not uniformly distributed throughout the United States, it would be necessary to transport either the raw materials or the hydrogen long distances to the appropriate markets. While hydrogen may be transported in a number of possible forms, pipelines currently appear to be the most economical means of moving it in large quantities over great distances. One means of controlling hydrogen pipeline costs is to use common rights-of-way (ROWs) whenever feasible. For that reason, information on hydrogen pipelines is the focus of this document. Many of the features of hydrogen pipelines are similar to those of natural gas pipelines. Furthermore, as hydrogen pipeline networks expand, many of the same construction and operating features of natural gas networks would be replicated. As a result, the description of hydrogen pipelines will be very similar to that of natural gas pipelines

  12. Constructing symmetric topological phases of bosons in three dimensions via fermionic projective construction and dyon condensation

    Science.gov (United States)

    Ye, Peng; Wen, Xiao-Gang

    2014-01-01

    Recently, there is a considerable study on gapped symmetric phases of bosons that do not break any symmetry. Even without symmetry breaking, the bosons can still be in many exotic new states of matter, such as symmetry-protected topological (SPT) phases, which are short-range entangled and symmetry-enriched topological (SET) phases, which are long-range entangled. It is well known that noninteracting fermionic topological insulators are SPT states protected by time-reversal symmetry and U(1) fermion number conservation symmetry. In this paper, we construct three-dimensional exotic phases of bosons with time-reversal symmetry and boson number conservation U(1) symmetry by means of fermionic projective construction. We first construct an algebraic bosonic insulator, which is a symmetric bosonic state with an emergent U(1) gapless gauge field. We then obtain many gapped bosonic states that do not break the time-reversal symmetry and boson number conservation via proper dyon condensations. We identify the constructed states by calculating the allowed electric and magnetic charges of their excitations, as well as the statistics and the symmetric transformation properties of those excitations. This allows us to show that our constructed states can be trivial SPT states (i.e., trivial Mott insulators of bosons with symmetry), nontrivial SPT states (i.e., bosonic topological insulators), and SET states (i.e., fractional bosonic topological insulators). In nontrivial SPT states, the elementary monopole (carrying zero electric charge but unit magnetic charge) and elementary dyon (carrying both unit electric charge and unit magnetic charge) are fermionic and bosonic, respectively. In SET states, intrinsic excitations may carry fractional charge.

  13. Stakeholders Assessment of Constraints to Project Delivery in the Nigerian Construction Industry

    OpenAIRE

    Bruno L. Tanko; Fadhlin Abdullah; Zuhaili Mohamad Ramly

    2017-01-01

    The central goal of construction stakeholders is to successfully deliver projects to stated objective (s). However, for decades, construction projects have been plagued by perennial constraints of cost and time overruns, poor quality, and lack of sustainability. The objective of this paper is to identify and assess the constraints to construction project delivery, and to recommend solutions to enhance project performance. This paper adopted both quantitative and qualitative methods to establi...

  14. An Innovative Time-Cost-Quality Tradeoff Modeling of Building Construction Project Based on Resource Allocation

    OpenAIRE

    Wenfa Hu; Xinhua He

    2014-01-01

    The time, quality, and cost are three important but contradictive objectives in a building construction project. It is a tough challenge for project managers to optimize them since they are different parameters. This paper presents a time-cost-quality optimization model that enables managers to optimize multiobjectives. The model is from the project breakdown structure method where task resources in a construction project are divided into a series of activities and further into construction l...

  15. Apparatus for metering the angle of inclination of construction projects

    Energy Technology Data Exchange (ETDEWEB)

    Zaripov, M.F.; Kovshov, G.N.; Lavrov, B.V.

    1980-08-30

    A design is submitted for an apparatus to be used in metering the inclination angle of construction projects such as wells. This apparatus consists of a hinged universal joint, both internal and external frames, a pendulum with a ferromagnetic probe mounted on the internal frame, two sources for the formation of a controlled magnetic field, magnetic posts which are in-line with the frame axis, and a conversion-metering circuit. A two-phase current generator is mounted on the external frame and a ferromagnetic probe is placed at a 45-degree angle to the rotation axis for the internal frame, perpendicular to the vertical posts. Such a configuration serves to improve the metering accuracy by removing error and instability in the magnetic field source current.

  16. Project, construction and test of a mini computerized tomograph

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira Junior, J.M. de [Universidade de Sorocaba (UNISO), SP (Brazil). Centro de Ciencias Exatas e Tecnologicas (CETEC)

    2003-06-01

    Computed Tomography (CT) refers to the cross-sectional imaging of an object from both transmission or reflection data collected by illuminating the object from many different directions. CT is an imaging technique that has revolutionized the field of medical diagnostics. There are many others applications for CT images, such as, nondestructive evaluation of industrial products and analysis of biological specimens. A mini computerized tomograph was projected, constructed and tested. It operates with a gamma ray source of {sup 241} Am (photons of 60 keV and 100 mCi of intensity) and a NaI(Tl) solid state detector. The system features translation and rotation scanning modes, a 100 mm effective field of view, and 1 mm spatial resolution. The preliminary results indicated a resolution between 5 % to 7 % to detect mass attenuation coefficient variations. The total cost of the Mini Computerized Tomograph of UNISO (MTCU) was about US$ 20.000,00. (author)

  17. Sinopec Fuels Development of Pipelines in East China

    Institute of Scientific and Technical Information of China (English)

    Li Xuemei

    2004-01-01

    @@ Crude pipeline completed in Yangtze River Delta The Ningbo-Shanghai-Nanjing crude pipeline was recently wound up for construction following completion of the subsea segment in Hangzhou Bay,the last part of the pipeline. The 711 mm-diameter crude pipeline, designed and constructed by Sinopec, adopts the advanced SCADA system for full automation control. The pipeline is designed to have an annual crude transmission capacity of 20million tons.

  18. Two Submarine Pipelines To Be Built in Bohai Sea

    Institute of Scientific and Technical Information of China (English)

    1997-01-01

    @@ To ensure the second step forward of CNOOC on oil/gas output for the Ninth -Five-Year Plan period, a transcentury project embarked upon its implementation in an all-round way at the beginning of this year by Bohai Company, i.e. two submarine oil/gas pipelines are going to be built across the Bohai Seabed. The two pipelines are of remarkably strategic significance for delivering the abundant resources of oil and gas developed in the Bohai Sea waters to the coastal cities in support of local economic construction and, in a couple of years, they will become "energy corridors" with great economic expectation.

  19. Construction

    Science.gov (United States)

    2002-01-01

    Harbor Deepening Project, Jacksonville, FL Palm Valley Bridge Project, Jacksonville, FL Rotary Club of San Juan, San Juan, PR Tren Urbano Subway...David. What is nanotechnology? What are its implications for construction?, Foresight/CRISP Workshop on Nanotechnology, Royal Society of Arts

  20. Sinopec: Pipeline Goes Ahead

    Institute of Scientific and Technical Information of China (English)

    Xie Ye

    2002-01-01

    @@ Asia's largest refinery, Sinopec Corp, will proceed with a 1,600-kilometre oil pipeline across southern provinces of China, although speculation continues to linger that the company will scrap the plan due to a postponement of the multi-million-dollar project.

  1. 77 FR 19799 - Pipeline Safety: Pipeline Damage Prevention Programs

    Science.gov (United States)

    2012-04-02

    ..., excavation, tunneling, or construction activity to establish the location of underground facilities in the demolition, excavation, tunneling, or construction area; 2. Disregard location information or markings... construction activity; and 3. Fail to report excavation damage to a pipeline facility to the owner or operator...

  2. The competitive dialogue procedure: negotiations and commitment in inter-organisational construction projects

    NARCIS (Netherlands)

    Hoezen, M.E.L.

    2012-01-01

    The construction industry has a bad image. There seems a lack of quality in construction works at the time of delivery, and estimates of time and costs seem to be exceeded structurally, especially in public projects. Partially, this has to do with the increased complexity of construction projects. T

  3. Development of ecologically safe method for main oil and gas pipeline trenching

    Directory of Open Access Journals (Sweden)

    Akhmedov Asvar Mikdadovich

    2014-05-01

    Full Text Available Constructive, technical and technological reliability of major pipeline ensures ecological safety on different stages of life circle - beginning with project preparation activities up to the end of major pipeline operation. Even in the process of transition into new life circle stage, no matter if the pipeline needs major repairs or reconstruction, such technical and technological solutions should be found, which would preserve ecological stability of nature-anthropogenic system. Development of ecology protection technologies of construction, reconstruction and major repairs of main pipelines is of great importance not only for a region, but ensures ecological safety across the globe. The article presents a new way of trenching the main oil and gas pipeline, preservation and increase of ecological safety during its service. The updated technological plan is given in the paper for overhaul of the main oil and gas pipeline using the new technology of pipeline trenching. The suggested technical solution contributes to environment preservation with the help of deteriorating shells - the shells’ material decomposes into environment-friendly components: carbon dioxide, water and humus. The quantity of polluting agents in the atmosphere decreases with the decrease of construction term and quantity of technical equipment.

  4. Northern pipelines : challenges and needs

    Energy Technology Data Exchange (ETDEWEB)

    Dean, D.; Brownie, D. [ProLog Canada Inc., Calgary, AB (Canada); Fafara, R. [TransCanada PipeLines Ltd., Calgary, AB (Canada)

    2007-07-01

    Working Group 10 presented experiences acquired from the operation of pipeline systems in a northern environment. There are currently 3 pipelines operating north of 60, notably the Shiha gas pipeline near Fort Liard, the Ikhil gas pipeline in Inuvik and the Norman Wells oil pipeline. Each has its unique commissioning, operating and maintenance challenges, as well as specific training and logistical support requirements for the use of in-line inspection tools and other forms of integrity assessment. The effectiveness of cathodic protection systems in a permafrost northern environment was also discussed. It was noted that the delay of the Mackenzie Gas Pipeline Project by two to three years due to joint regulatory review may lead to resource constraints for the project as well as competition for already scarce human resources. The issue of a potential timing conflict with the Alaskan Pipeline Project was also addressed as well as land use issues for routing of supply roads. Integrity monitoring and assessment issues were outlined with reference to pipe soil interaction monitoring in discontinuous permafrost; south facing denuded slope stability; base lining projects; and reclamation issues. It was noted that automatic welding and inspection will increase productivity, while reducing the need for manual labour. In response to anticipated training needs, companies are planning to involve and train Aboriginal labour and will provide camp living conditions that will attract labour. tabs., figs.

  5. 77 FR 14006 - Proposed Development of the Alaska Stand Alone Gas Pipeline Project (ASAP), From the North Slope...

    Science.gov (United States)

    2012-03-08

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF DEFENSE Department of the Army, Corps of Engineers Proposed Development of the Alaska Stand Alone Gas Pipeline... January 20, 2012, issue of the Federal Register (77 FR No. 13), the U.S. Army Corps of Engineers...

  6. International Cooperation for the Construction of South Korea — North Korea — Russia Pipeline Natural Gas (PNG): Effectiveness and Restrictions

    National Research Council Canada - National Science Library

    Ji Won Yun

    2015-01-01

    The main purpose of this article is to examine the process and restrictions of the energy cooperation between South Korea and Russia which began with the initiation of the Kovykta gas field project...

  7. Pipeline rehabilitation planning

    Energy Technology Data Exchange (ETDEWEB)

    Palmer-Jones, Roland; Hopkins, Phil; Eyre, David [PENSPEN (United Kingdom)

    2005-07-01

    An operator faced with an onshore pipeline that has extensive damage must consider the need for rehabilitation, the sort of rehabilitation to be used, and the rehabilitation schedule. This paper will consider pipeline rehabilitation based on the authors' experiences from recent projects, and recommend a simple strategy for planning pipeline rehabilitation. It will also consider rehabilitation options: external re-coating; internal lining; internal painting; programmed repairs. The main focus will be external re-coating. Consideration will be given to rehabilitation coating types, including tape wraps, epoxy, and polyurethane. Finally it will discuss different options for scheduling the rehabilitation of corrosion damage including: the statistical comparison of signals from inspection pigs; statistical comparison of selected measurements from inspection pigs and other inspections; the use of corrosion rates estimated for the mechanisms and conditions; expert judgement. (author)

  8. Decisive management in selecting locations for development of construction projects

    Science.gov (United States)

    Szafranko, E.; Pawłowicz, J. A.

    2017-08-01

    The location of an investment project is one of the most important decisions in the construction and land development business. The shape of a new building and aspects of its future use depend on making a good choice of a land plot where it will be constructed. There are many characteristics involved descriptions of land available for development. On the one hand, different buildings (with different envisaged use) fit differently to a given location. Residential homes, for example, require a location which will ensure a peaceful lifestyle, with places for walks and recreation, situated in a relatively quite setting. On the other hand, close proximity to schools, shops or a health clinic is another important consideration. Industrial buildings should be localized so as not to be a nuisance to others, and their location should facilitate efficient transport of raw materials and ready products. Yet other requirements are defined for public buildings. It is therefore evident that the characteristics included in an evaluation of the location of a planned building can be highly diverse and their diversity makes the evaluation difficult. Selection of a location can be supported by a variety of methods. For instance, an evaluation can rely on assigning points which indicate the fulfillment of certain criteria. This approach generates a complex evaluation in the form of tables and maps of usefulness. Another possibility is to make an assessment of the criteria that a given land parcels should satisfy in order to develop a specific type of a building. Having combined these two sets of information, we can create a system or a model for the management of land resources, which will easily help to support decision making processes pertaining to the choice of a location. This article shows a model approach for a specific building.

  9. 探讨建设工程造价控制%On Construction Project Cost Control

    Institute of Scientific and Technical Information of China (English)

    刘志

    2014-01-01

    建设工程中的造价控制在控制建设工程投资上有重要的意义。笔者结合建设工程造价的特点,针对我国建设工程造价的现状进行了分析,提出了建设工程造价控制的有效措施,以充分发挥建设工程的经济效益。%Construction project cost control is very important for the control of construction project investment. Combined with the characteristics of the construction project cost, this article analyzes the current situation of construction project cost in China, and puts forward the effective measures of the construction project cost control, in order to give full play to the economic benefits of construction project.

  10. Pipeliners go regulator shopping

    Energy Technology Data Exchange (ETDEWEB)

    Byfield, M.

    1996-12-09

    The weakening of Alberta`s regulatory grip on gas pipelines was discussed. Palliser Pipeline Limited has challenged Nova Corp`s monopoly by applying to the National Energy Board (NEB) for permission to build a 150-mile pipeline from Calgary to the Saskatchewan border. If the $350 million project proceeds, it would mean that gas would be flowing out of Alberta for the first time through a line that is not operated by Nova Corp. Palliser would operate with a lower shipping toll, set by the NEB rather than Alberta`s Energy and Utilities Board. Alliance Pipeline Ltd. will also apply to the NEB to build a 1850-mile pipeline that would originate in British Columbia, cross Alberta and terminate in Chicago. Nova Corp has implied that it might have to consider charging distance-based tolls if the Palliser bypass line proceeds. However, Palliser countered that it should not be necessary to change the postage stamp system for that small a fraction. Palliser suggested that Nova was simply reacting because it was facing competition for the first time. Final decision is in the hands of the federal government.

  11. Interorganizational communication and ICT in construction projects: a review using metatriangulation

    NARCIS (Netherlands)

    Adriaanse, Adriaan Maria; Voordijk, Johannes T.

    2005-01-01

    Although communication is of vital importance in construction projects, the construction industry is confronted with great communication difficulties and an ineffective use of information and communication technology (ICT) systems. In this study, the objective is to analyse obstacles and

  12. Interorganizational communication and ICT in construction projects: a review using metatriangulation

    NARCIS (Netherlands)

    Adriaanse, Arjen; Voordijk, Hans

    2005-01-01

    Although communication is of vital importance in construction projects, the construction industry is confronted with great communication difficulties and an ineffective use of information and communication technology (ICT) systems. In this study, the objective is to analyse obstacles and preconditio

  13. 42 CFR 137.352 - What is contained in a construction project progress report?

    Science.gov (United States)

    2010-10-01

    ... HUMAN SERVICES INDIAN HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES TRIBAL SELF-GOVERNANCE Construction Roles of Self-Governance Tribe in Establishing and Implementing Construction Project Agreements... the Self-Governance Tribe, if any. ...

  14. Potential Improvement of Building Information Modeling (BIM) Implementation in Malaysian Construction Projects

    OpenAIRE

    Latiffi, Aryani,; Mohd, Suzila; Rakiman, Umol,

    2015-01-01

    Part 4: Building Information Modeling (BIM); International audience; Application of building information modeling (BIM), such as preview design clashes and visualize project’s model increase effectiveness in managing construction projects. However, its implementation in Malaysian construction projects is slow in order to see and gain the benefits. Therefore, this paper aims to explore on potential improvement that could increase BIM implementation in construction projects. A literature review...

  15. Roles and Responsibilities of Construction Players in Projects Using Building Information Modeling (BIM)

    OpenAIRE

    Latiffi, Aryani,; Brahim, Juliana; Fathi, Mohamad,

    2015-01-01

    Part 4: Building Information Modeling (BIM); International audience; Building Information Modeling (BIM) has been implemented in construction projects to overcome problems such as project delay, cost overrun and poor quality of project. BIM enhances construction player to perform their activities in effective and efficient through the development of three dimensional (3D) model. However, BIM requires changes in current practices among construction players in terms of the processes and technol...

  16. Technological and regulatory aspects of quality management during the life cycle of investment and construction projects

    Directory of Open Access Journals (Sweden)

    Kropyvko Serhii Maksymovych

    2016-12-01

    Full Text Available The division of the life cycle of investment and construction projects in four phases, based on their technological features, is proposed in the article. Regulatory aspects of quality management during each phase of the life cycle of investment and construction projects are analyzed. The model of quality management during the phases of the life cycle of investment and construction project is developed.

  17. Developing a methodology for preparation and Execution phase of construction project

    National Research Council Canada - National Science Library

    Sonja Kolaric; Dragana Pavlovic; Mladen Vukomanovic

    2015-01-01

    ...) in procuring construction projects. As a direct response, many governments of the most developed states within the EU, introduced a short-term goals to make all major projects designed with BIM till the end of 2016...

  18. Construction of new tie-in in the Bolivia-Brazil Gas Pipeline (GASBOL) using hot tapping techniques; Derivacao do Gasoduto Bolivia-Brasil com a tecnica de hot-tapping

    Energy Technology Data Exchange (ETDEWEB)

    Frisoli, Caetano [TRANSPETRO - PETROBRAS Transportes, Rio de Janeiro, RJ (Brazil); Frota, Cristiane Souto; Leite Filho, Ismael Casono; Lobao Filho, Jesualdo Pereira; Saavedra, Marcelo Curto [Transportadora Brasileira Gasoduto Bolivia-Brasil, S.A., Rio de Janeiro, RJ (Brazil)

    2003-07-01

    To supply 2,4 MM m3/d of natural gas to Tres Lagoas thermo electric plant, it was necessary to install a new delivery point of 12'' in the 32'' trunk line of Bolivia-Brazil gas pipeline. The most efficient method for executing new delivery points and maintenance repairs in pipelines is using the 'hot-tapping' technique, because there is no need to stop flow and blow down lines. This paper shows the project, specifications, planning and a detailed job execution to support this new city-gate, using a T split sleeve welded in the pipeline, explaining all the activities. Complex and innovative aspects related to the welding and inspection processes, executed in a API 5L X70 pipe at 92 kgf/cm{sup 2}, are also reported. (author)

  19. China’s Largest Integrated Aluminum Project to Be Constructed in Yulin,Shaanxi Province

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    <正> With an estimated investment of RMB 11.5 bil-lion,the country’s largest coal-power-aluminum integrated production project will beconstructed in Yulin,Sha’anxi Province.It ispreliminarily decided to locate the project siteat Jinjitan Town,Yuyang District of YulinCity,and construction of the project is to beundertaken by China Aluminum Corporation.As auxiliary constructions of the project,theHanglaiwan Coal Mine with an annual coal

  20. Relationship between time management in construction industry and project management performance

    Science.gov (United States)

    Nasir, Najuwa; Nawi, Mohd Nasrun Mohd; Radzuan, Kamaruddin

    2016-08-01

    Nowadays, construction industry particularly in Malaysia struggle in achieving status of eminent time management for construction project. Project managers have a great responsibility to keep the project success under time of project completion. However, studies shows that delays especially in Malaysian construction industry still unresolved due to weakness in managing the project. In addition, quality of time management on construction projects is generally poor. Due to the progressively extended delays issue, time performance becomes an important subject to be explored to investigate delay factors. The method of this study is review of literature towards issues in construction industry which affecting time performance of project in general by focusing towards process involved for project management. Based on study, it was found that knowledge, commitment, cooperation are the main criteria as an overall to manage the project into a smooth process during project execution until completion. It can be concluded that, the strength between project manager and team members in these main criteria while conducting the project towards good time performance is highly needed. However, there is lack of establishment towards factors of poor time performance which strongly related with project management. Hence, this study has been conducted to establish factors of poor time performance and its relations with project management.

  1. Role of PMC in Construction of Collector Well Project, a Case Study

    Directory of Open Access Journals (Sweden)

    Sarath. C

    2016-10-01

    Full Text Available The rapid expansion and intricacy in the construction industry cause difficulties in maintaining performance, time, and quality services of a construction project, which leads to the failure to meet the scope and objective of a project. In addition, improper planning, widespread dependence, and low availability of materials increase the cost of the construction project. To manage such issues, Project Management Consultancy is one of the management solutions that have been widely used. Project Management Consultancy plays a multifaceted role in providing services from the beginning of construction to its completion. Project Management Consultancy makes sure whether we are moving in the right pathway according to the planned schedule. Use of Project Management Consultancy offers constructive management solution for the proper execution of work, improved performance, quality, and outcome of the project. The objective of this paper is to study the role and responsibilities of Project Management Consultancy while executing a project and the risks associated with it. This research is carried out via a case study of the construction of an industrial project governed by a Project Management Consultancy from preconstruction phase to completion

  2. Leadership Pipeline

    DEFF Research Database (Denmark)

    Elmholdt, Claus Westergård

    2013-01-01

    I artiklen undersøges det empiriske grundlag for Leader- ship Pipeline. Først beskrives Leadership Pipeline modellen om le- delsesbaner og skilleveje i opadgående transitioner mellem orga- nisatoriske ledelsesniveauer (Freedman, 1998; Charan, Drotter and Noel, 2001). Dernæst sættes fokus på det...... forholdet mellem kontinuitet- og diskontinuitet i ledel- seskompetencer på tværs af organisatoriske niveauer præsenteres og diskuteres. Afslutningsvis diskuteres begrænsningerne i en kompetencebaseret tilgang til Leadership Pipeline, og det foreslås, at succesfuld ledelse i ligeså høj grad afhænger af...

  3. Leadership Pipeline

    DEFF Research Database (Denmark)

    Elmholdt, Claus Westergård

    2013-01-01

    I artiklen undersøges det empiriske grundlag for Leader- ship Pipeline. Først beskrives Leadership Pipeline modellen om le- delsesbaner og skilleveje i opadgående transitioner mellem orga- nisatoriske ledelsesniveauer (Freedman, 1998; Charan, Drotter and Noel, 2001). Dernæst sættes fokus på det...... forholdet mellem kontinuitet- og diskontinuitet i ledel- seskompetencer på tværs af organisatoriske niveauer præsenteres og diskuteres. Afslutningsvis diskuteres begrænsningerne i en kompetencebaseret tilgang til Leadership Pipeline, og det foreslås, at succesfuld ledelse i ligeså høj grad afhænger af...

  4. Pipeline coating comparison methods for northern pipelines

    Energy Technology Data Exchange (ETDEWEB)

    Singh, P. [Shaw Pipe Protection, Calgary, AB (Canada); Purves, G.A. [Cimarron Engineering Ltd., Calgary, AB (Canada)

    2004-07-01

    Two high-quality pipe coatings designed for northern environments were compared for their relative costs and suitability for the conditions that will be encountered in the field. Coating selection should consider local conditions to achieve the optimum life-cycle costs for the system. Some of the key factors affecting the integrity of the protective coating on a pipe include the effects of cold temperature and soil types. In this study, both Fusion Bonded Epoxy (FBE) and High Performance Composite Coatings (HPCC) were evaluated for an entire pipeline installation in a northern environment, from the coating plant to the pipe trench. The evaluation focused on the advantages of better abrasion resistance of the HPCC coating. This was compared against the incremental cost of HPCC coating over FBE on large diameter NPS 30 to NPS 48 pipelines. The following parameters influenced the choice of coating: storage, transportation and handling; bending ability under cold weather conditions; pipe installation and backfilling; weld joint coatings; coating repair and cathodic protection and pipeline integrity. Some of the construction costs that are indirectly affected by the choice of pipe coating include right-of-way preparation and restoration; trenching; supervision, service and downtime and specialist crossings. It was concluded that HPCC has better resistance to abrasion than FBE and is more flexible in extremely cold temperatures. Standard FBE is about 10 per cent less expensive than HPCC. In general HPCC will require less coating protection than FBE, depending on site conditions. 3 refs., 18 tabs., 8 figs.

  5. causes of conflicts in construction projects in nigeria

    African Journals Online (AJOL)

    user

    of the projects. Empirical evidence from previous studies shows that conflicts affects projects outcomes, if not .... Questionnaire survey was used because it can be used ... DATA ANALYSIS ..... order evaluation, design errors, excessive contract.

  6. Bias Corrected Constructed Analogs V2 Daily Climate Projections

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This archive contains projections of daily BCCA CMIP3 and CMIP5 projections of precipitation, daily maximum, and daily minimum temperature over the contiguous United...

  7. Construction and assembly of pipelines using API 5L grade X80 tubes - considerations to be observed with high-strength steels; Construcao e montagem de dutos terrestres utilizando tubos API 5L Gr. X80

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Ailton C. de; Rabello, Jose Mauricio B. [PETROBRAS S.A., Rio de Janeiro, RJ (Brazil)

    2005-07-01

    The use of line pipes API 5L Grade X80, at the point of view of designer allows: reduction of wall thickness and pipe weight or increase of design pressure. In the pipeline construction point of view, the use of line pipes API 5L Grade X80 provide some advantages, however some difficulties must be expected in several stages of the construction and assembly. The implications in cost, productivity, inspection and integrity, with the application of these high resistance steels, complying with PETROBRAS Standard N - 464 Construcao, Montagem e Condicionamento de Dutos Terrestres (Rev. H - 2004 Dec) and the experience consolidated in pipelines construction abroad were presented. At the design stage, a comparison between pipelines designed using API 5L-X70 and API 5L-X80 was carried out approaching the aspects of variation of thickness, pressure design and design factor. An evaluation of the expected gains when choosing API 5L Grade X80 steels were done, regarding reduction of costs and pipe weight. Regarding API 5L-X80 pipe fabrication, the obtained results were reported, proving that this aspect was already overcome, showing the viability of its production in Brazil. Difficulties were detected regarding construction and assembly stage and showing the need of revision of PETROBRAS standard N-464. (author)

  8. Communication Cable Inspection in Sewage Pipeline Construction by Radar Testing Method%雷达法探测污水管道施工中遇到的通讯电缆

    Institute of Scientific and Technical Information of China (English)

    杨放; 王晓文; 曹华; 代晓柯; 周艳芳

    2012-01-01

    The pipe jacking construction technology is always used in urban sewage pipeline construction,but the existed communication cable has affected the construction progress.This paper introduces the principle of testing underground pipeline by radar method,researches the testing progress how to determine the location of the existed communication cable before sewage pipeline construction by radar method with some engineering examples and has positive guiding significance for similar engineering difficulty.%城市污水管道工程常采用顶管施工技术,而原有通讯电缆的存在构成了施工过程中的障碍,影响了工程进度。文章介绍了雷达法探测地下管线的原理,并结合工程实例,叙述了在顶管施工前应用雷达法确定原有通讯电缆位置的探测过程,对解决类似工程难题具有积极的指导意义。

  9. Assessing Environmental Impact Indicators in Road Construction Projects in Developing Countries

    Directory of Open Access Journals (Sweden)

    Mohamed Marzouk

    2017-05-01

    Full Text Available Environmental pollution is considered to be one of the main concerns in the construction industry. Environmental pollution has become a major challenge to construction projects due to the huge amount of pollution caused by construction projects. There are different types of environmental impact indicators, such as the greenhouse gas (GHG footprint, eutrophication potential (EP, acidification potential (AP, human health (HH particulate, ozone depletion, and smog. Each of these environmental impact indicators can be linked to different phases of the construction projects. The overall environmental impact indicators can be divided into direct, indirect, and operational emissions. This paper presents a Building Information Modeling (BIM-based methodology for the assessment of environmental impacts in road construction projects. The model takes into account the overall life cycle of the road construction project, which is divided into: manufacturing phase, transportation phase, construction phase, maintenance phase, operational phase, recycling phase, and deconstruction phase. A case study is presented to demonstrate the applicability of the proposed model. The proposed model solves a major problem for road construction project teams who want to assess the environmental impact indicators associated with their project prior to the start of the execution of their projects.

  10. Critical Causes and Consequences of Construction Project Interruption: Client, Contractor, Consultant and External Factors Standpoints

    Directory of Open Access Journals (Sweden)

    Nurbasirah Mohamed Alias

    2013-09-01

    Full Text Available It should be pointed out that the dilemma of interruption and stoppage in the construction industry is a large-scale trend. Construction interruption and stoppage is considered one of the most recurring problems in the construction industry. Construction Interruption and stoppage is always measured as costly to all parties concerned in the projects and very often it will result in clash, claims, total desertion and much difficult for the feasibility and it slows the growth of construction sector. The objective of the research work that underpins this paper was to investigate the Factors and Consequences of construction projects on local contractors. A construction project is commonly acknowledged as successful when the aim of the project is achieved in terms of predetermined objectives that are mainly completed the project on time, within budget and specified quality in accordance with the specifications and to stakeholders’ satisfaction. One of the most important problems that may arise in the construction project is delays and the magnitude of these delays varies considerably from project to project. According to delay categories that were contractor related, client related, consultant related, labour related and external related, the study revealed the six major effects of delay that were time overrun, cost overrun, dispute, arbitration, total abandonment, and litigation.

  11. Examining the Challenging Hindrances facing in the Construction Projects: South India’s Perspective

    Science.gov (United States)

    Subramanyam, K.; Haridharan, M. K.

    2017-07-01

    Developing countries like India require a huge infrastructure to facilitate needs of the people. Construction industry provides several opportunities to the individuals. Construction manager work is to supervise and organize the construction activities in construction projects. Now a day construction manager facing challenges. This paper aimed to study the challenges facing by the construction manager in the perception of construction professionals. 39 variables were taken from the literature review which found to be severe impact on construction managers’ performance. Construction manager, project manager and site engineers are the respondents for this survey. Using SPSS, regression analysis was done and recognized significant challenges. These challenges were classified into 5 domains. In management challenges, resource availability and allocation, risks and uncertainties existing in the project onsite, top management support and cost constraints are the most significant variables. In skills requirement of a construction manager challenges, technical skills required to learn and adapt new technology in the project, decision making and planning according to the situation in site are the most significant variables. In performance challenges, implementation of tasks according to the plan is the important variable whereas in onsite challenges, manage project risks, develop project policies and procedures are the most important.

  12. A Pilot Survey on Causes of Delay in Malaysian Construction Project

    Directory of Open Access Journals (Sweden)

    Tawil Norngainy Mohd

    2014-01-01

    Full Text Available Construction delay is a common problem in the construction industry all over the world. Many researchers seeking the causes of delay in order to reduce the probability of delay to occur. Most researcher identified causes of delay in construction to reduce the possibility of construction project to continued delay. This study is to obtain the holistic delay categories base on Drewin Open Conversion System (DOCS for the development of a theoretical framework delay and to get the most significant causes of delay in construction industries. There are three main factor of construction delay based on DOCS; input factor, internal factor and external factor. There are130 items on causes of delay and it is divided into 31 categories. This pilot survey is distributed to students and fresh graduates that have educational background in construction. The result shown the main factor that contributes to construction delay are mistakes during construction and unrealistic project durations.

  13. The research of breakdown structure and coding system for construction project

    Institute of Scientific and Technical Information of China (English)

    丁大勇; 金维兴; 李培

    2004-01-01

    Whether the breakdown structure and coding system of construction projects are reasonable or not determines to a large degree the pepfofmance level of the entire project management. We analyze in detail the similarities and differences of two kinds of decomposing methods classified by type of work and construction elements based on the discussion of international typical coding standards system designing. We then deduce the differential coefficient relation between project breakdown strueture(PBS) and work breakdown structure (WBS). At the same time we constitute a comprehensive construction project breakdown system including element code and type of work code and make a further schematic presentation of the implementation of the sysrem' s functions.

  14. The importance of environmental communications in gas pipeline projects; A importancia da pre-comunicacao ambiental no licenciamento, implantacao e operacao de dutos

    Energy Technology Data Exchange (ETDEWEB)

    Figueiredo, Marcia Bartolini; Sarno, Ruy Alberto Campos [PETROBRAS, Rio de Janeiro, RJ (Brazil)

    2005-07-01

    The Environmental Pre-Communication is a tool developed to identify the profiles of communities surrounding the marked area (lifestyle, resources, fragilities, beliefs, culture and wishes), how they make their living, and production (community dependence relationship with ecosystems, such as rivers and subsistence areas), social organization, needs and expectations. Besides developing a social economic diagnostic, pre-communication prepares a community perception study. Regarding gas pipelines, the area of study comprehends 200 m towards each side of gas pipeline right-of-way in rural areas and 400 m towards each side in urban areas. Pre-Communication diagnostic, which is included in the process of environmental licensing, is aimed at subsidizing EIS (Environmental Impact Statement), providing data which help to elaborate mitigating and compensatory plans and programs. Moreover, diagnostic information make it possible to run public forums before Public Hearings take place, aiming at clarifying specific community issues related to construction and reduction of resistances, avoiding problems and conflicts. Also, during the entrepreneurship implementation phase, there is the advantage to know the bordering community and its daily activities, increasing the effectiveness of Environmental Programs. (author)

  15. Three Theoretical Perspectives for Understanding Inter-firm Coordination of Construction Project Supply Chains

    Directory of Open Access Journals (Sweden)

    Carlos Torres Formoso

    2011-09-01

    Full Text Available The success of construction projects is highly dependent on the coordination of a fairly large number of stakeholders, such as client organizations, designers, general contractors, and subcontractors. Each of those stakeholders can both affect and be affected by the way a project is managed, and none of them usually has the power or the ability to coordinate project supply chains. However, the existing literature on supply chain management does not provide a comprehensive theoretical foundation for describing or explaining the coordination of construction project supply chains. This paper discusses the role of three different theoretical perspectives for understanding the inter-firm coordination process of project supply chains in the construction industry: the Theory of Coordination, the Transaction Cost Theory and the Language-Action Perspective. The contribution of each theoretical approach is pointed out in the paper, and their complementary role is illustrated in a case study carried out in a petrochemical construction project in Brazil.

  16. Measuring the effects of using ICT/BIM in construction projects

    DEFF Research Database (Denmark)

    Lambrecht, Jan Fuglsig; Vestergaard, Flemming; Karlshøj, Jan

    2016-01-01

    his paper focuses on presenting part of the findings from a research project completed in the period of 2009-2013.The research project was funded by the Danish Building & Property Agency with the primary aim to identify and measure the economic effects of using ICT/BIM in construction projects....... Firstly, this paper presents a conceptual evaluation method developed in order to define and describe how case studies focusing on use of ICT/BIM in construction projects could be completed in order to measure (both quantitatively and qualitatively) the effects achieved from using ICT/BIM in construction...... projects. In this context effects are defined both as tangible and intangible effects (both economically and non-economically) directly and/or indirectly as a consequence of using ICT/BIM in a construction project. Secondly, the paper presents and analyses findings achieved from completing four case...

  17. Identifying the most critical project complexity factors using Delphi method: the Iranian construction industry

    Directory of Open Access Journals (Sweden)

    Mohammad Mehdi Mozaffari

    2012-09-01

    Full Text Available Complexity is one of the most important issues influencing success of any construction project and there are literally different studies devoted to detect important factors increasing complexity of projects. During the past few years, there have been growing interests in developing mass construction projects in Iran. The proposed study of this paper uses Delphi technique to find out about important factors as barriers of construction projects in Iran. The results show that among 47 project complexity factors, 19 factors are more important than others are. The study groups different factors into seven categories including environmental, organizational, objectives, tasks, stakeholders, technological, information systems and determines the relative importance of each. In each group, many other sub group activities are determined and they are carefully investigated. The study provides some detailed suggestions on each category to reduce the complexity of construction project.

  18. Measuring the effects of using ICT/BIM in construction projects

    DEFF Research Database (Denmark)

    Lambrecht, Jan Fuglsig; Vestergaard, Flemming; Karlshøj, Jan

    2016-01-01

    This paper focuses on presenting part of the findings from a research project completed in the period of 2009-2013.The research project was funded by the Danish Building & Property Agency with the primary aim to identify and measure the economic effects of using ICT/BIM in construction projects....... Firstly, this paper presents a conceptual evaluation method developed in order to define and describe how case studies focusing on use of ICT/BIM in construction projects could be completed in order to measure (both quantitatively and qualitatively) the effects achieved from using ICT/BIM in construction...... projects. In this context effects are defined both as tangible and intangible effects (both economically and non-economically) directly and/or indirectly as a consequence of using ICT/BIM in a construction project. Secondly, the paper presents and analyses findings achieved from completing four case...

  19. Products pipeline network plans set out for North Yemen

    Energy Technology Data Exchange (ETDEWEB)

    Venus, C.

    1984-02-13

    The growth of oil-products demand in future years is leading the Yemen Arab Republic (Y.A.R.) to improve the distribution network for the products by constructing a pipeline system. Petroleum products are currently distributed by road tankers only between the receiving terminals and the main cities, which represent the most important consumption centers, together with new industrial plants such as cement factories, power plants, etc. The technical design and economic and financial feasibility study of the project was entrusted to Omnium Technique des Transports par Pipelines (OTP). The scope covers the setting up in the Y.A.R. of the basic equipment for the supply, storage, and land transportation of petroleum products with a view to: Meeting the national demand for the next 25 years. Providing an adequate strategic reserve of petroleum products with a total storage capacity amounting to 3 months of consumption. The only exception in the transportation of the petroleum products will involve heavy fuel oil which will continue to be transported by road tankers. This article describes the basic facilities which have to be installed before the start-up of the projected network. The project includes a marine terminal in Salif and a pipeline to Sana'a with the related storage, truck loading, and pumping facilities for white products and gas oil which will be transported by pipeline.

  20. Robust Optimization for Time-Cost Tradeoff Problem in Construction Projects

    OpenAIRE

    Ming Li; Guangdong Wu

    2014-01-01

    Construction projects are generally subject to uncertainty, which influences the realization of time-cost tradeoff in project management. This paper addresses a time-cost tradeoff problem under uncertainty, in which activities in projects can be executed in different construction modes corresponding to specified time and cost with interval uncertainty. Based on multiobjective robust optimization method, a robust optimization model for time-cost tradeoff problem is developed. In order to illus...

  1. 49 CFR 195.248 - Cover over buried pipeline.

    Science.gov (United States)

    2010-10-01

    ... HAZARDOUS LIQUIDS BY PIPELINE Construction § 195.248 Cover over buried pipeline. (a) Unless specifically... (457) Any other area 30 (762) 18 (457) 1 Rock excavation is any excavation that requires blasting or...

  2. Investigating the Benefits of Using Information Systems in Saudi Arabia Construction Projects

    Directory of Open Access Journals (Sweden)

    Saleh Alatawi

    2014-10-01

    Full Text Available Constructions is the second growing industry in KSA. The lion share of the national budget is directed to construction projects and this will be continue for at least 10 years or more.Ensuring the success of any construction project, many depend of success of its management. Therefore, recently, research on management of construction projects in KSA has grabbed the highest attention in both academic and industry domains. The main contribution of this paper is proposing of an Information System (IS to handle the complication of managing construction projects in KSA. The paper starting by defining what is an IS to solve the conflict and misunderstanding between definitions of Information Communication Technology (ICT and IS. Paper is proceed with exploring the reasons behind the complications of construction projects in KSA. These reasons will answer the question of why ICT is not enough to manage construction projects in KSA. Benefits and structure of using the proposed IS in managing construction projects in KSA have been defined.

  3. An Investigation into Cultural Dimensions of Construction Professionals Working for International Projects in Oman

    Directory of Open Access Journals (Sweden)

    Byung Gyoo Kang

    2016-04-01

    Full Text Available International construction projects involve multinational participants with different nationalities and cultural backgrounds. To execute international projects, construction companies easily face significant risks which hinder the capability to create profits and degrade company credibility. One of the major risk factors affecting project performance and success is cultural characteristics of project participants, especially expatriates, working in international construction projects. This research investigates the cultural dimensions of Indian, Sri Lankan and British construction professionals working for international projects in Oman. Cultural dimensions have been surveyed by a quantitative approach. The outcomes indicate that even though these professionals are working in the same construction industry and currently in similar working environments, their cultural dimensions are mainly influenced by national culture. Further Asian participants of the survey showed lower Power Distance Index (PDI and Uncertainty Avoidance Index (UAI than their national cultural dimensions. This is a reflection of westernization of their companies in the international construction markets. Also lower Long Term Orientation (LTO indicates the temporary tendency of employment in international construction projects. Further research will need to focus on the relationship between corporate culture and national culture to complete the entire picture of culture in construction.

  4. Study on the Overall Construction Management of Wuhan Railway Terminal Projects

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    The Wuhan railway terminal projects that are under construction and proposed are in their varieties of numbers with mutual constraints,cross influence and complex coordination with each other The construction has great interference to the train operations of the existing lines.The paper puts forward the principles and measures for the construction management based on the analyses on the necessity of the overall construction management of Wuhan railway terminal projects and proposes the general ideas and construction measures for the construction projects of the Wuhan North Marshalling Station,the lead-in of Hefei-Wuhan Railway to the Terminal,Tianxingzhou Bridge,Goods Train Passing-around Line,New Wuhan Railway Station,Fuxingwan Dispatching and Decoupling Area and reconstruction of Hankou Railway Station.All these projects should be arranged according to the overall plan and in combination with the target of construction period to identify the dominance of the project,make use of the capacity of the existing terminal and take the transitional measures for provisional operation as the support and for the overall arrangement in advance so as to minimize the interference between train operation and construction and to guarantee a rational construction of all the projects in good order.

  5. Risk Evaluation on UHV Power Transmission Construction Project Based on AHP and FCE Method

    Directory of Open Access Journals (Sweden)

    Huiru Zhao

    2014-01-01

    Full Text Available Ultra high voltage (UHV power transmission construction project is a high-tech power grid construction project which faces many risks and uncertainty. Identifying the risk of UHV power transmission construction project can help mitigate the risk loss and promote the smooth construction. The risk evaluation on “Zhejiang-Fuzhou” UHV power transmission construction project was performed based on analytic hierarchy process (AHP and fuzzy comprehensive evaluation (FCE method in this paper. After the risk evaluation index system was built, the AHP was used to determine the weights of risk indicators, and the FCE method was to perform the risk evaluation. The evaluation result shows that (1 “Zhejiang-Fuzhou” UHV power transmission construction project has moderate risk, which indicates the occurrence probability of project risk is medium and the risk occurrence will cause general loss for project, (2 “society risk” has the highest level, and the next is “policy and law risk,” “technique risk,” “natural environmental risk,” and “Management risk,” respectively, and it should keep main eye on the social risk, policy and law risk, and technique risk. Finally, according to the risk evaluation result, the specific risk control recommendations were proposed for the smooth construction of this project.

  6. State and residual service life of gas and water pipelines of the first PE generation. Results of a DVGW research project; Integritaet von PE-Gas- und Wasserleitungen der ersten Generation. Ergebnisse eines DVGW-Forschungsvorhabens

    Energy Technology Data Exchange (ETDEWEB)

    Wuest, Juergen; Wenzel, Mirco [SKZ, Wuerzburg (Germany); Scholten, Frans; Wolters, Mannes [Kiwa Gas Technology, Apeldoorn (Netherlands); Heinemann, Juergen; Bockenheimer, Alexander [Technische Univ. Darmstadt (DE). Staatliche Materialpruefungsanstalt Darmstadt (MPA)

    2010-10-15

    Within the scope of a DVGW research project the KIWA, SKZ and MPA Darmstadt research institutes examined the condition and possible residual service life of gas and water pipelines of the first PE generation operating for more than 30 years. The creep rupture curves determined on the old pipelines are very similar to the ones ascertained approx. 40 years ago, allowing an extrapolation over at least another 25 years at service temperature upon expiry of the originally predicted service life of 50 years. Both the gas and water pipelines still show an actively effective thermal stabilization so that an early thermo-oxidative failure is not to be expected even after expiry of the originally estimated service life of 50 years. Nevertheless, public utilities operating gas and water pipelines made of PE of the first generation are recommended to closely observe the damage statistics/damage progression within the scope of the regular inspections of the pipeline network, thus being in a position to recognise ageing phenomena which indicate an end of the service life of the pipeline system in time and perform further examinations. (orig.)

  7. Progress in Spiral Saw Steel Pipe Manufacturing Technology Promotes Construction of Oil/Gas Long-Distance Pipelines in West China

    Institute of Scientific and Technical Information of China (English)

    Huang Zhiqian

    1997-01-01

    @@ Introduction Since the tremendous development of oil and gas exploration achieved in West China at the beginning of 1990's, it is demanded to build several long-distance oil/gas pipelines to transmit the crude oil and natural gas from Tarimu Basin, Tuha Basin, Junggar Basin as well as Shaan-Gan-Ning Basin to the cities of Urumuqi,Klamayi, Xi'an and Beijing (details see Table 1). The total length of pipelines is more than 3 200 km, and the natural conditions along the pipelines are very harsh. This raises a challenge to the Chinese pipe manufacturing industry.

  8. Preferred Team Roles of Construction Team Members in Selected Higher Institution Projects

    Directory of Open Access Journals (Sweden)

    Olatunde Nathaniel Ayinde

    2017-05-01

    Full Text Available The study appraises the preferred team role of construction team members in selected higher institution projects in Nigeria, with a view to improving delivery of such projects. The study used purposive sampling technique to select two higher institutions studied and census survey was used in selecting 35 completed construction projects executed by the institutions. A total of 191 questionnaires were distributed to obtain information from construction team members who participated in the selected construction projects. Mean Item Score was used in ranking the preferred team roles of construction team members. The results revealed that the construction team members’ preferred team roles by personal assessment are different from their preferred team roles by other observers’ assessment of individual construction team members. Construction team members have more than one preferred team roles and that the most preferred team role of Quantity surveyors, clients and contractors is resource investigator while the most preferred team role of Architects, Structural/Civil Engineers and Service Engineer is Planter, Implementer/company worker and specialist respectively. The study concluded that a deliberate attempt should be made in determining the preferred team roles of construction team members before co- opting them into a team so as to improve construction projects delivery.

  9. Maturity of project management in construction companies with the use of fuzzy numbers

    Science.gov (United States)

    Klaus-Rosińska, Agata; Kuchta, Dorota

    2017-07-01

    The main aim of the article is to describe issue of maturity in project management regarding construction companies. Taking into consideration this problem the literature research was made, existing project management maturity models were analyzed, model of maturity in project management (using fuzzy numbers approach) was described and tested. The results of testing stage are shown in the case study.

  10. Pipeline clean-up : speed, environment drive pipelining equipment

    Energy Technology Data Exchange (ETDEWEB)

    Budd, G.

    2004-08-01

    Horizontal drilling technology is the single most important enhanced oil recovery technology which has resulted in a significant increase in pipeline utilization. Pipeline operators such as Calgary-based Denim Pipeline Construction Ltd. are responding by using the latest equipment, including excavation equipment, to avoid maintenance delays and downtime. The sales of Denim's horizontal pipe bending equipment have increased due to their attention to worker safety. Denim's horizontal bending machine does not require as much technical support, plus it is faster to install and speeds up production. The machine consists of 3 hydraulic jacks that move on a horizontal plate. Curved dies can be modified to accommodate various diameters of pipe. The bending operation is performed very near to the ground, thereby significantly reducing the risk of pipe injury. Environmental damage is minimized through the use of mechanized mulching which has replaced burning of unwanted trees and brush to clean for pipelines. 1 fig.

  11. Construction practices for ore slurry pipeline of Baiyunebo iron mine, Baotou iron and steel company%包钢白云矿浆管线工程建设实践

    Institute of Scientific and Technical Information of China (English)

    谭俊清; 沈翠良

    2011-01-01

    包钢白云矿浆管线工程是国内第三条铁精矿矿浆管线,也是目前国内管径最大、输送能力最强、单极泵站输送距离最远的浆体管线,年输送550万t铁精矿和2000万t的水.目前,已经建成投入运行,管线位于内蒙古高原的严寒冻土地带,建设期间解决了诸多施工技术问题.%As the third iron concentrate slurry pipeline interiorly, the largest ore slurry pipeline system and include the longest water pipeline with one pump station in China, Bayan Obo slurry pipeline engineering of Baotou has been operated. It can transport 5. 5 million tons of iron concentrate and 20 million m3 water per year. In order to overcome freezing temperatures and rugged terrain, many technical problems have been resolved in the period of construction.

  12. Anchor Loads on Pipelines

    OpenAIRE

    Wei, Ying

    2015-01-01

    Anchor hooking on a subsea pipeline has been investigated in this thesis. Anchor loads on pipelines is in general a rarely occurring event, however, the severity when it occurs could easily jeopardize the integrity of any pipeline. It is considered as an accidental load in the design of pipelines. Pipeline Loads, limit state criteria and anchor categories are defined by the DNV standards. For pipeline, DNV-OS-F101 (08.2012), Submarine Pipeline Systems is adopted. Offshore standard DNV-RP...

  13. Yacuiba - Rio Grande Gas Pipeline (GASYRG), in Bolivia. The development of a company and the construction of the pipeline in a regulated and competitive environment; Gasoducto Yacuiba - Rio Grande (GASYRG), in Bolivia - experiencias de la creacion de una empresa y de la construccion del gasoducto bajo las condiciones de un escenario competitivo e regulado

    Energy Technology Data Exchange (ETDEWEB)

    Loureiro, Mauro de Oliveira; Montano, Jose Ruben [Transierra S.A. (Bolivia)

    2003-07-01

    In order to fulfill contractual agreements, three Bolivian companies decided to create Transierra S.A., a gas transportation company that would increase the gas transportation capacity from the gas fields, located in the Southern part of Bolivia. The overall objective was to build and operate a gas pipeline from Yacuiba to Rio Grande in time to comply with already agreed dates to star commercial operation. The creation of the company and the construction process were conducted in a highly competitive and regulated environment. Construction completion schedules were tight; therefore, under the previously mentioned scenario, the company implemented creative strategies to achieve its goals. (author)

  14. Prediction of Scour Depth around Offshore Pipelines in the South China Sea

    Institute of Scientific and Technical Information of China (English)

    Yonggang Cao; Yuchuan Bai; Junqin Wang; Shizhi Liao; Dong Xu

    2015-01-01

    Scour depth prediction of offshore pipelines is of great significance to the design and construction of the submarine pipeline projects. In this paper, based on the CFD software package FLUENT and User Defined Function (UDF), an Eulerian two-phase model, which includes an Euler-Euler coupled model for water and sediment phases, and a turbulent model for the fluid phase, is adopted to predict the scour depth around pipelines. The model is verified by observation data obtained from laboratory experiments. On the basis of the simulations, the factors affecting the scour depth, including the effects of incipient velocity, pipe diameter and sediment particle size and so on, were investigated. Meanwhile, according to formulas of incipient velocity of various sediments, approximate calculation on theoretical scour depths is developed for pipelines of seven stations in the South China Sea, where engineering application information is available.

  15. Prediction of scour depth around offshore pipelines in the South China Sea

    Science.gov (United States)

    Cao, Yonggang; Bai, Yuchuan; Wang, Junqin; Liao, Shizhi; Xu, Dong

    2015-03-01

    Scour depth prediction of offshore pipelines is of great significance to the design and construction of the submarine pipeline projects. In this paper, based on the CFD software package FLUENT and User Defined Function (UDF), an Eulerian two-phase model, which includes an Euler-Euler coupled model for water and sediment phases, and a turbulent model for the fluid phase, is adopted to predict the scour depth around pipelines. The model is verified by observation data obtained from laboratory experiments. On the basis of the simulations, the factors affecting the scour depth, including the effects of incipient velocity, pipe diameter and sediment particle size and so on, were investigated. Meanwhile, according to formulas of incipient velocity of various sediments, approximate calculation on theoretical scour depths is developed for pipelines of seven stations in the South China Sea, where engineering application information is available.

  16. Critical Causes and Consequences of Construction Project Interruption: Client, Contractor, Consultant and External Factors Standpoints

    OpenAIRE

    2013-01-01

    It should be pointed out that the dilemma of interruption and stoppage in the construction industry is a large-scale trend. Construction interruption and stoppage is considered one of the most recurring problems in the construction industry. Construction Interruption and stoppage is always measured as costly to all parties concerned in the projects and very often it will result in clash, claims, total desertion and much difficult for the feasibility and it slows the growth o...

  17. Impact of senior design project for the development of leadership and management skills in construction management

    Science.gov (United States)

    Chowdhury, Tamara

    2013-08-01

    Senior design courses are a core part of curricula across engineering and technology disciplines. Such courses offer Construction Management (CMG) students the opportunity to bring together, assimilate and apply the knowledge they have acquired over their entire undergraduate academic programme to an applied technical project. Senior or Capstone design course engages students in a real-world project, enhance leadership development, and prepare to manage and lead project teams. The CMG programme's multidisciplinary approach at Alabama A&M University, combines essential components of construction techniques with concepts of business management to develop technically qualified individuals for responsible management roles in the design, construction and operation of major construction projects. This paper analyses the performance of the students and improvement due to the interaction with the faculty advisors and industrial panel during the two semester Capstone project. The results of this Capstone sequence have shown a continuous improvement of student performance.

  18. Fuzzy Optimization of Construction Engineering Project Schedule Based on Critical Chain Management

    Directory of Open Access Journals (Sweden)

    Jianbing LIU

    2013-07-01

    Full Text Available Critical chain management was the very important theory innovation in the development of construction project schedule management field in recent years. Compared with the traditional methods of construction project schedule management, the methods of critical chain management considered resource constraints into construction project schedule management, the construction project cycle was shortened and the efficiency was enhanced by using the dynamic thinking and circulation pattern to manage whole project. In view of the progress of critical chain management of the article, fuzzy theory  was used to calculate and optimize the buffer zone sizes with the determination of the buffer size of  the existing resources in certain critical chain management so as to shorten the cycle..

  19. Determining Success Criteria and Success Factors for International Construction Projects for Malaysian Contractors

    Directory of Open Access Journals (Sweden)

    Ali Mohammed Alashwal

    2017-06-01

    Full Text Available The success of international construction projects is fraught with various challenges such as competitiveness, lack of resources, versatile global economy, and specific conditions in the host country. Malaysian contractors have been venturing into global construction market since early 1980s. However, their venturing was not successful all the time. The number of international projects awarded to Malaysian contractors has reduced drastically during the past decade. Taking advantage of this experience, this paper aims to identify the success criteria and success factors of international construction projects. The data was collected from 120 respondents using a questionnaire survey and analysed using principal component analysis and regression analysis. The results revealed three principal criteria of project success namely, Management Success, Functional Success, and Organisation Success. The main components of success factors include Team Power and Skills, Resource Availability, External Environment, Organisation Capability, Project Support, and Project Organisation. Further analysis emphasized the importance of strong financing capacity of contractors, project social environment, and competence of the project manager in achieving project success. The results of this paper can serve as a guideline for contractors and project managers to achieve success in this context. Future studies may provide in-depth analysis of success criteria and success factors specific for construction project type and host-country location.

  20. Engineered pipeline field joint coating solutions for demanding conditions

    Energy Technology Data Exchange (ETDEWEB)

    Lwemuchi, Andre L.; Gudme, Carl C.; Buchanan, Robert [Canusa-CPS, Toronto, OT (Canada)

    2009-12-19

    Trends in the oil and gas pipeline industry see that the demand for new technologies and engineered solutions for pipeline external coatings are increasing. In general, superior mechanical resistance and long term performance are being required in addition to operating at higher temperatures. This demand for more robust coatings has been created because of factors such as more remote fields, deep onshore reservoirs, deep water offshore fields and heavy oil that must be pumped at higher temperatures. The development of new techniques for pipeline construction is also exposing the coatings to more aggressive construction conditions. Because of this, the use of three layer and multi-layer polypropylene mainline coating systems have been growing considerably. Following this trend, the field joint coating manufacturers developed polypropylene systems and more recently had to work on engineered solutions required for recent offshore projects in Europe where very thick polypropylene field joint heat-shrinkable systems were provided. In addition, projects in remote locations such as the recently completed projects in the Brazilian Amazon required special logistics and field services. The growth of the mining industry in South America with slurry pipelines constructed in the recent years also demanded thicker, more robust coatings. The popularization of directional drilling and shore approach applications moved the industry to develop improved abrasion resistant coating systems such as using sacrificial elements to protect the primary coating integrity after the pipeline pull. PETROBRAS plans to replace existing thermally insulated pipelines crossing Great Sao Paulo. Therefore, pumping heavy oil at high temperatures created the need to develop improved mainline and field joint coatings to avoid having the same sort of problems they are facing in existing thermally insulated lines. Due to these needs, the field joint coating manufactures have been challenged to provide

  1. The inverse electroencephalography pipeline

    Science.gov (United States)

    Weinstein, David Michael

    The inverse electroencephalography (EEG) problem is defined as determining which regions of the brain are active based on remote measurements recorded with scalp EEG electrodes. An accurate solution to this problem would benefit both fundamental neuroscience research and clinical neuroscience applications. However, constructing accurate patient-specific inverse EEG solutions requires complex modeling, simulation, and visualization algorithms, and to date only a few systems have been developed that provide such capabilities. In this dissertation, a computational system for generating and investigating patient-specific inverse EEG solutions is introduced, and the requirements for each stage of this Inverse EEG Pipeline are defined and discussed. While the requirements of many of the stages are satisfied with existing algorithms, others have motivated research into novel modeling and simulation methods. The principal technical results of this work include novel surface-based volume modeling techniques, an efficient construction for the EEG lead field, and the Open Source release of the Inverse EEG Pipeline software for use by the bioelectric field research community. In this work, the Inverse EEG Pipeline is applied to three research problems in neurology: comparing focal and distributed source imaging algorithms; separating measurements into independent activation components for multifocal epilepsy; and localizing the cortical activity that produces the P300 effect in schizophrenia.

  2. Locally Constructed Analogs (LOCA) Daily CMIP5 Climate Projections

    Data.gov (United States)

    Federal Geographic Data Committee — This archive contains 64 projections of daily LOCA CMIP5 climate over the contiguous United States. This archive includes these meteorological variables at 1/16th...

  3. Locally Constructed Analogs (LOCA) Daily CMIP5 Climate Projections

    Data.gov (United States)

    US Bureau of Reclamation, Department of the Interior — This archive contains 64 projections of daily LOCA CMIP5 climate over the contiguous United States. This archive includes these meteorological variables at 1/16th...

  4. 7 CFR 1726.403 - Project construction contract closeout.

    Science.gov (United States)

    2010-01-01

    ..., architect or engineer, contractor, and the respective RUS General Field Representative (GFR), if the GFR has... closeout documents for RUS approval (through the GFR except for generation projects): (A) RUS Form...

  5. The contributions of construction material waste to project cost ...

    African Journals Online (AJOL)

    Management, Faculty ... management of materials and waste leads to an increase in the total cost of building ... cost, quality and sustainability, as well as on the success of projects. (Nagapan ..... Moving beyond optimism bias and strategic ...

  6. The practice of project construction and management of Three Gorges ship-lock%The practice of project construction and management of Three Gorges ship-lock

    Institute of Scientific and Technical Information of China (English)

    Fan Qixiang; Yang Zongli; Liu Gang

    2011-01-01

    The double-line five-step ship-lock of Three Gorges Project (TGP) is an extra-large navigation structure with the maximum design total head and single-step delivery head in the world and complicated technical problems. The ship- lock is a challenging and world-class project integrating the advanced techniques and equipment, the up-to-date technol- ogies and materials, as well as the advanced project management. Through 17-year construction and 9-year operation of the ship-lock, various difficulties in design, construction, equipment manufacturing and installation as well as system debugging have been overcome effectively. The project management ideas, management system, management methods, technological innovation and team building are summarized according to the management practice of the second stage main work of Three Gorges ship-lock.

  7. Format-free databases and the construction of knowledge in primary school science projects

    Science.gov (United States)

    Nason, Rod; Lloyd, Peter; Ginns, Ian

    1996-09-01

    Most current science education reform documents are placing much emphasis on having students become competent in identifying, accessing and operating upon relevant information sources and in using the information to construct new knowledge. One of the means they suggest for achieving these aims is science project work. However, a review of the research literature indicates that little knowledge construction occurs during science projects. This article reports on a study in which a teacher used the collaborative development of a format-free computer database to facilitate the construction of knowledge by a group of three Year 6 students during a science project.

  8. Rehabilitation and certification of the PGPB Cactus-San Fernando gas pipeline system

    Energy Technology Data Exchange (ETDEWEB)

    Graciano, L.S. [Permex Gas y Petroquimica Basica, Mexico City (Mexico); Clyne, A. [GE Energy PII Pipeline Solutions, Buenos Aires (Argentina); Cazenave, P.; Willis, S. [GE Energy PII Pipeline Solutions, Houston, TX (United States); Kania, R. [GE Energy Pipeline Solutions, Calgary, AB (Canada)

    2004-07-01

    The Cactus-San Fernando gas pipeline system is 650 km in length and was constructed in the late 1970s. The system transports more than 1100 million standard cubic feet per day of dry natural gas to electricity generators in Mexico. This paper described a project undertaken to re-validate the pipeline and demonstrate the future integrity of the pipeline system and ensure that it was suitable for operation to 1219 psig. Pipeline sections were inspected using high resolution magnetic flux leakage (MFL) in-line inspection (ILI) tools, and inertial mapping unit vehicles equipped with global positioning surveys (GPS). The combined inspections allowed the project team to accurately identify features of the pipeline that required repairs. External and internal corrosion were identified as the most prevalent defects. RSTRENG methodologies were used to investigate the interaction of individual corrosion anomalies. Corrosion patterns were compared, and above-ground survey data were used to establish the causes of both the external and internal corrosion, as well as to establish future corrosion growth rates. Decision tree analysis was then used to analyze the growth rates and to identify statistical differences between corrosion growth rates as a function of distance along the pipeline. After the ILI reports were generated, an integrity assessment was then conducted to identify necessary repair options. Repairs plans were then developed along with recommended re-inspection intervals for each section. After the integrity assessments were accepted by a certification company, field work was conducted to locate and measure defects. Defects characteristic of major volumetric welding flaws introduced during pipeline construction were identified and repaired with an epoxy sleeve technique. It was concluded that repairs needed to operate the pipeline at the requested pressure were accomplished within a period of 8 months. 7 refs., 2 tabs., 4 figs.

  9. Upstream pipelines : inspection, corrosion and integrity management

    Energy Technology Data Exchange (ETDEWEB)

    Paez, J.; Stephenson, M. [Talisman Energy Inc., Calgary, AB (Canada)] (comps.)

    2009-07-01

    Accurate inspection techniques are needed to ensure the integrity of pipelines. This working group discussed methods of reducing pipeline failures for a variety of pipes. A summary of recent pipeline performance statistics was presented, as well as details of third party damage and fiberglass pipe failures. A batch inhibitor joint industry project was described. The session demonstrated that integrity program need to be developed at the field-level as well as at the upper management level. Fiberglass pipeline failures are significant problem for pipeline operators. Corrosion monitoring, pigging and specific budgets are needed in order to ensure the successful management of pipeline integrity. New software developed to predict pipeline corrosion rates was discussed, and methods of determining mole fractions and flow regimes were presented. The sessions included updates from regulators and standards agencies as well as discussions of best practices, regulations, codes and standards related to pipeline integrity. The working group was divided into 4 sessions: (1) updates since 2007 with input from the Canadian Association of Petroleum Producers (CAPP) and the Upstream Pipeline Integrity Management Association (UPIMA); (2) integrity of non-metallic pipelines; (3) upstream pipeline integrity issues; and (4) hot topics. tabs., figs.

  10. Nondestructive characterization of pipeline materials

    Science.gov (United States)

    Engle, Brady J.; Smart, Lucinda J.; Bond, Leonard J.

    2015-03-01

    There is a growing need to quantitatively and nondestructively evaluate the strength and toughness properties of pipeline steels, particularly in aging pipeline infrastructure. These strength and toughness properties, namely yield strength, tensile strength, transition temperature, and toughness, are essential for determining the safe operating pressure of the pipelines. For some older pipelines crucial information can be unknown, which makes determining the pressure rating difficult. Current inspection techniques address some of these issues, but they are not comprehensive. This paper will briefly discuss current inspection techniques and relevant literature for relating nondestructive measurements to key strength and toughness properties. A project is in progress to provide new in-trench tools that will give strength properties without the need for sample removal and destructive testing. Preliminary experimental ultrasonic methods and measurements will be presented, including velocity, attenuation, and backscatter measurements.

  11. Distinction of Concept and Discussion on Construction Idea of Smart Water Grid Project

    Science.gov (United States)

    Ye, Y.; Yizi, S., Sr.; Lili, L., Sr.; Sang, X.; Zhai, J.

    2016-12-01

    Smart water grid project includes construction of water physical grid consisting of various flow regulating infrastructures, construction of water information grid in line with the trend of intelligent technology and construction of water management grid featured by system & mechanism construction and systemization of regulation decision-making. It is the integrated platform and comprehensive carrier for water conservancy practices. Currently, there still is dispute over engineering construction idea of smart water grid which, however, represents the future development trend of water management and is increasingly emphasized. The paper, based on distinction of concept of water grid and water grid engineering, explains the concept of water grid intelligentization, actively probes into construction idea of Smart water grid project in our country and presents scientific problems to be solved as well as core technologies to be mastered for smart water grid construction.

  12. Stakeholders Assessment of Constraints to Project Delivery in the Nigerian Construction Industry

    Directory of Open Access Journals (Sweden)

    Bruno L. Tanko

    2017-01-01

    Full Text Available The central goal of construction stakeholders is to successfully deliver projects to stated objective (s. However, for decades, construction projects have been plagued by perennial constraints of cost and time overruns, poor quality, and lack of sustainability. The objective of this paper is to identify and assess the constraints to construction project delivery, and to recommend solutions to enhance project performance. This paper adopted both quantitative and qualitative methods to establish the constraints in the Nigerian construction industry. A pilot survey and literature reviewed revealed a total of fifty (50 construction constraints, which were further classified into eight (8 major groups. Well-structured questionnaires were administered to construction stakeholders (client, consultant and contractor in Abuja, the federal capital city of Nigeria. Relative Importance Index (RII was used to analyze the data using Likert scale.  The results suggest that cost/time overrun related factors (inability to reduce project cost, Stakeholders interactive-related factors (inability to establish client value system, Client-related factors (Delay in interim payment and finance problem, and Labor/material-related factors (escalation of material prices and materials quality variability are the most prevalent constraints in the Nigerian construction environment.  To mitigate the effects of these challenges, it is suggested that a formal innovative approach should be used by stakeholders to address the problems of poor communication, high project cost, and delay. Clients should also take measures to provide adequate funding and should promptly honor interim certificates.

  13. An Investigation into the use and Construction Professionals` Preference for Migrant Craftsmen in Construction Project Delivery in Ondo State

    Directory of Open Access Journals (Sweden)

    Olanipekun Emmanuel Abiodun

    2017-02-01

    Full Text Available The paper investigated the extent of participation of migrant craftsmen in construction projects delivery in Ondo State; identified the countries of origin and the aspect of construction trades where they are involved, factors influencing the choice of migrant craftsmen by construction manager, as well as factors militating against the use of local craftsmen and the effect of using migrant craftsmen in the study area. A social survey strategy was adopted and questionnaire was used as an instrument to gather relevant data from practicing construction professionals in Ondo State. The data were compiled and analyzed using SPSS 17.0. The result shows that migrant craftsmen from three major countries in West Africa namely Togo, Benin and Ghana were used on construction sites and they were commonly employed in the trades of tilling and interlocking. The dexterity of indigenous craftsmen (MS=4.20 was the major factor influencing the use of migrant craftsmen in these trades; cutting corners and rushing work while performing their responsibility, not keen on improving their training, alcoholism and drug abuse were ranked by the respondents as major factors militating against the use of local craftsmen. The result also indicates that the use and preference for Migrant craftsmen would increase unemployment rate for local craftsmen. The study concluded that migrant craftsmen were not predominantly used in construction projects delivery in Ondo State.

  14. Identification of Tools and Techniques to Enhance Interdisciplinary Collaboration During Design and Construction Projects.

    Science.gov (United States)

    Keys, Yolanda; Silverman, Susan R; Evans, Jennie

    2016-01-01

    The purpose of this study was to collect the perceptions of design professionals and clinicians regarding design process success strategies and elements of interprofessional engagement and communication during healthcare design and construction projects. Additional objectives were to gather best practices to maximize clinician engagement and provide tools and techniques to improve interdisciplinary collaboration for future projects. Strategies are needed to enhance the design and construction process and create interactions that benefit not only the project but the individuals working to see its completion. Meaningful interprofessional collaboration is essential to any healthcare design project and making sure the various players communicate is a critical element. This was a qualitative study conducted via an online survey. Respondents included architects, construction managers, interior designers, and healthcare personnel who had recently been involved in a building renovation or new construction project for a healthcare facility. Responses to open-ended questions were analyzed for themes, and descriptive statistics were used to provide insight into participant demographics. Information on the impressions, perceptions, and opportunities related to clinician involvement in design projects was collected from nurses, architects, interior designers, and construction managers. Qualitative analysis revealed themes of clinician input, organizational dynamics, and a variety of communication strategies to be the most frequently mentioned elements of successful interprofessional collaboration. This study validates the need to include clinician input in the design process, to consider the importance of organizational dynamics on design team functioning, and to incorporate effective communication strategies during design and construction projects.

  15. Risk Consideration and Cost Estimation in Construction Projects Using Monte Carlo Simulation

    Directory of Open Access Journals (Sweden)

    Claudius A. Peleskei

    2015-06-01

    Full Text Available Construction projects usually involve high investments. It is, therefore, a risky adventure for companies as actual costs of construction projects nearly always exceed the planed scenario. This is due to the various risks and the large uncertainty existing within this industry. Determination and quantification of risks and their impact on project costs within the construction industry is described to be one of the most difficult areas. This paper analyses how the cost of construction projects can be estimated using Monte Carlo Simulation. It investigates if the different cost elements in a construction project follow a specific probability distribution. The research examines the effect of correlation between different project costs on the result of the Monte Carlo Simulation. The paper finds out that Monte Carlo Simulation can be a helpful tool for risk managers and can be used for cost estimation of construction projects. The research has shown that cost distributions are positively skewed and cost elements seem to have some interdependent relationships.

  16. Instrumented Pipeline Initiative

    Energy Technology Data Exchange (ETDEWEB)

    Thomas Piro; Michael Ream

    2010-07-31

    This report summarizes technical progress achieved during the cooperative agreement between Concurrent Technologies Corporation (CTC) and U.S. Department of Energy to address the need for a for low-cost monitoring and inspection sensor system as identified in the Department of Energy (DOE) National Gas Infrastructure Research & Development (R&D) Delivery Reliability Program Roadmap.. The Instrumented Pipeline Initiative (IPI) achieved the objective by researching technologies for the monitoring of pipeline delivery integrity, through a ubiquitous network of sensors and controllers to detect and diagnose incipient defects, leaks, and failures. This report is organized by tasks as detailed in the Statement of Project Objectives (SOPO). The sections all state the objective and approach before detailing results of work.

  17. Optimizing strategy software for repetitive construction projects within multi-mode resources

    Directory of Open Access Journals (Sweden)

    Remon Fayek Aziz

    2013-09-01

    Full Text Available Estimating tender data for specific project is the most essential part in construction areas as of contractor’s view such as: proposed project duration with corresponding gross value and cash flows. This paper focuses on how to calculate tender data using Optimizing Strategy Software (OSS for repetitive construction projects with identical activity’s duration in case of single number of crew such as: project duration, project/bid price, project maximum working capital, and project net present value of the studied project. A simplified multi-objective optimization software (OSS will be presented that creates best tender data to contractor compared with more feasible options generated from multi-mode resources in a given project. OSS is intended to give more scenarios which provide practical support for typical construction contractors who need to optimize resource utilization in order to minimize project duration, project/bid price, and project maximum working capital while maximizing its net present value simultaneously. OSS is designed by java programing code system to provide a number of new and unique capabilities, including: (1 Ranking the obtained optimal plans according to a set of planner specified weights representing the relative importance of duration, price, maximum working capital and net present value in the analyzed project; (2 Visualizing and viewing the generated optimal trade-off; and (3 Providing seamless integration with available project management calculations. In order to provide the aforementioned capabilities of OSS, the system is implemented and developed in four main modules: (1 A user interface module; (2 A database module; (3 A running module; (4 A connecting module. At the end of the paper, an illustrative example will be presented to demonstrate and verify the applications of the proposed software (OSS to an optimization expressway of repetitive construction project.

  18. Haltenpipe and Troll oil pipeline, technology at the forefront

    Energy Technology Data Exchange (ETDEWEB)

    Blaker, F. [Statoil, Stavenger (Norway)

    1996-12-31

    Offshore pipeline technology coprises a spectrum of technologies within seabed mapping, design, materials, construction, inspection and maintenance. This paper deals with some of the recent developments, characterised by achievements within two specific projects on the Norwegian continental shelf. These developments concern the Troll oil pipeline and the Haltenbank projects. These are the use of advanced subsea mapping and position technology, hydraulic flow modelling simulating unique flow conditions inside a deep and narrow fjord, control of multiple free span behaviour by use of advanced design methology, use of strain based criteria to reduce large scale seabed correction works, high precision pipeline installation in deep weater involving guided laying to ensure the correct position of the pipeline across pre-installed gravel burns and at lateral counteracts, and a midline tie-in concept comprising an above-water welded tie-in of a prefabricated bend section and on bottom installation of hydraulic operated mechanical connectors specially developed for diverless repair contingency in deep waters. 10 figs.

  19. A decision support system framework to improve design-construction integration and project performance on public sector underground utility projects

    Science.gov (United States)

    Gehrig, Gary Bruce

    One of the noted difficulties with the traditional public works project development process is the lack of integration and sharing of information between engineering and construction entities that results in a decrease in project performance. To improve project performance on public sector underground utility projects, the research develops a decision support system framework that enhances the exchange and integration of relevant information and knowledge between entities on such projects by incorporating a lessons-learned database to document, organize and disseminate lessons-learned on a project. To identify the critical activities within the project development process that could be linked to the decision support system, the Integration Definition for Functioning Modeling (IDEFO) technique was used to create a representative model of the public works project development process. The resultant model demonstrated the repeatable nature of the process both across project phases and from project-to-project and identified the decision-making activities of generating and evaluating alternatives as key opportunities for construction-related input that could be linked to a decision support system. An inspection of current industry practices was conducted through interviews with knowledgeable industry sources to determine the scope of the decision support system framework. Results revealed the type of critical decisions on underground utility projects that could benefit from construction-related input and identified the documentation of lessons-learned as a major industry weakness. A prototype decision support system incorporating a lessons-learned database was developed and the framework integrated into common project management reporting mechanisms found in the industry. The actual decision-maker can retrieve lessons-learned according to predetermined categories of critical decisions, compare and evaluated retrieved alternatives, and document the rationale behind the

  20. Assuring health and safety performance on construction projects ...

    African Journals Online (AJOL)

    and management was organised. The article proposes a .... Botswana and South Africa on the practice of H&S in the construction industry. ... academic journals, 345 recent conference papers and 341 other ...... Further examination of the indirect influence of client H&S culture .... set up incentives for good H&S behaviour;.

  1. Measuring the effects of using ICT/BIM in construction projects

    DEFF Research Database (Denmark)

    Lambrecht, Jan Fuglsig; Vestergaard, Flemming; Karlshøj, Jan

    2016-01-01

    his paper focuses on presenting part of the findings from a research project completed in the period of 2009-2013.The research project was funded by the Danish Building & Property Agency with the primary aim to identify and measure the economic effects of using ICT/BIM in construction projects....... Firstly, this paper presents a conceptual evaluation method developed in order to define and describe how case studies focusing on use of ICT/BIM in construction projects could be completed in order to measure (both quantitatively and qualitatively) the effects achieved from using ICT/BIM in construction...... has a significant impact on the processes completed in both design and construction and that an advanced field-study approach is necessary in order to be able to measure the effects....

  2. PROBLEMS OF PROJECTS AND EFFECTS OF DELAYS IN THE CONSTRUCTION INDUSTRY OF PAKISTAN

    Directory of Open Access Journals (Sweden)

    M. Haseeb

    2011-09-01

    Full Text Available The problem of project delays is a fact that occurs mostly in construction industry of Pakistan. Delays are always measured as expensive to all parties concerned in the projects and very often it will result in clash, claims, total desertion and much difficult for the feasibility and it slows the growth of construction sector. For analyzing the causes of delay, an appraisal on construction project’s time performance was conducted. The main objective of this study is the identification of factors of delay and their effects on the success and completion of project. The most common factor of delay are natural disaster in Pakistan like flood and earthquake and some others like financial and payment problems, improper planning, poor site management, insufficient experience, shortage of materials and equipment etc. This paper covers the delay factors and causes of delay and some suggestion for reducing these delays in large construction projects in Pakistan.

  3. A Neural Network Model for Construction Projects Site Overhead Cost Estimating in Egypt

    CERN Document Server

    ElSawy, Ismaail; Razek, Mohammed Abdel

    2011-01-01

    Estimating of the overhead costs of building construction projects is an important task in the management of these projects. The quality of construction management depends heavily on their accurate cost estimation. Construction costs prediction is a very difficult and sophisticated task especially when using manual calculation methods. This paper uses Artificial Neural Network (ANN) approach to develop a parametric cost-estimating model for site overhead cost in Egypt. Fifty-two actual real-life cases of building projects constructed in Egypt during the seven year period 2002-2009 were used as training materials. The neural network architecture is presented for the estimation of the site overhead costs as a percentage from the total project price.

  4. Design and construction coordination problems and planning for design-build project new users

    National Research Council Canada - National Science Library

    Shen, Fang-Ying; Chang, Andrew S; Ibbs, William

    2010-01-01

    ... to be encountered in execution by new users. This paper investigates coordination problems arising from design and construction concurrence and solutions by studying five ongoing DB projects and interviewing nine major contract parties...

  5. Time Contingency Assessment in Construction Projects in Egypt using Artificial Neural Networks Model

    Directory of Open Access Journals (Sweden)

    Hazem Yahia

    2011-07-01

    Full Text Available Time schedule is an essential tool for construction project management. For instance, it can materially help to identify the expected financial requirements. It is also an important tool for the time control process. Construction project time schedule is greatly affected by many uncertain but predictable factors. Hence, a certain percentage of time contingency should be added to the scheduled time to arrive at more reliable time schedule. In this research, the most important factors affecting time contingency in construction projects were identified based on a comprehensive survey among a collected sample of the Egyptian construction experts. In addition, a neural networks model was developed in order to help project planner to have a more reliable prediction for the amount of time contingency that should be added to the scheduled completion time. This paper explains the data collection process, lists the main factors affecting time contingency and discusses the model development methodology.

  6. SpiderFab: Process for On-Orbit Construction of Kilometer-Scale Apertures Project

    Data.gov (United States)

    National Aeronautics and Space Administration — This project develops a process for automated on-orbit construction of very large structures and multifunctional components. The foundation of this process is a...

  7. Challenges of the expansive use of Building Information Modeling (BIM in construction projects

    Directory of Open Access Journals (Sweden)

    Hannele Kerosuo

    2015-06-01

    Full Text Available Building information modeling (BIM is an emerging modeling technology which challenges existing work procedures and practices in the construction industry. In this article we study the challenges, problems and potential expansions of BIM as a tool in the design, construction and operation of buildings. For this purpose the interfaces between different parties are examined in Finnish construction projects. The methodological approach of the study is cultural-historical activity theory, according to which a new artifact becomes a mediating instrument when the participatory subjects reconfigure the entire activity. The implementation of BIM is now spreading from the design activity to other phases of the construction projects, but its use is still limited in the projects' other three interfaces. BIM is an evolving set of software developed for various purposes which is locally 'combined' to fit the circumstances and capabilities of the stakeholders of the construction process.

  8. Calculation of the hydraulic characteristics of the protective coating used in trenchless technologies for the construction and renovation of pipelines to extend their service life

    Directory of Open Access Journals (Sweden)

    Orlov Vladimir

    2017-01-01

    Full Text Available The lifetime of the pipeline, which undergoes trenchless repair by pulling and then fixing various types of internal protective coatings inside, is determined by the strength characteristics of the two-layer structure “old pipeline + internal protective coating”. Hydraulic parameters of internal protective coatings, such as surface roughness and degree of hydrophobicity (water repellency, can play a role in prolonging the life of the repaired pipeline. With a high degree of hydrophobicity of the protective coating, the contact of the transported liquid with the walls of the pipeline during its operation in the non-pressure regime decreases, which leads to a decrease in the negative impact on the walls, in particular, their attrition, interaction with the specific structure of the coating material, which in turn reduces the energy costs when transporting water. Given article deals with a mathematical description of the interaction of the surface structure (with its inherent wetting ability and the transported liquid in a mini-stream created on an inclined open chute imitating the inner surface of a pressureless pipeline. The theoretical positions and methodology for calculating the degree of hydrophobicity are based on research conducted on the basis of frontal and coaxial (along the flow digital photo and video. T

  9. An Objective Evaluation of Determinants of Construction Project Success.

    Science.gov (United States)

    1986-12-01

    Management Institute. pp. 13-2 1. 6 6p 7 or all parties to a project. A central theme throughout many of the articles is the different measures of success...estimated ’for low or negative factor levels is less than (or greater than) zero. .HEDULE PERFORMANCE FACTOR BETTER LOWER % DIFF SIGN MEASURE LL LEL EBM

  10. Estimating Performance Time for Air Force Military Construction Projects

    Science.gov (United States)

    2005-03-01

    Arditi et al, (1985) NEDO, (1988) Mansfield et al, (1994) Naoum, (1991) Assaf et al, (1995) Chan and Kumaraswam y, (1997) Kaming et al, (1997...00 0, 00 0 Project Cost D ur at io n (d ay s) Regression Line Data Upper/Lower Quartiles 212 Bibliography Arditi ,D., G.T. Akan, and S. Gurdamer

  11. Risk Determination, Prioritization, and Classifying in Construction Project Case Study: Gharb Tehran Commercial-Administrative Complex

    Directory of Open Access Journals (Sweden)

    Azadeh Sohrabinejad

    2015-01-01

    Full Text Available Construction projects play an important role in infrastructure projects in developing countries. According to type, size, and complexity of the project, the number and importance of each risk could be different and many projects cannot reach the project goals due to exposure to multiple risks. Many papers have been published on the subject of risk management in construction projects; unfortunately most of them have not been implemented in practical conditions. The aim of this study is to identify and prioritize risks in construction projects. The classical approach used probability and impact for risk assessment, but these criteria do not sufficiently address all aspects of projects risks and there might be a relationship between different criteria. This study proposes the hierarchical dependencies between criteria. A case study of construction project is presented to illustrate performance and usage of the proposed model. Utilizing library studies and interview with experts, managers, and specialists, decision criteria were identified through brain storming. Risks were categorized by the experts into eleven risks. Important risks were evaluated based on the fuzzy ANP, fuzzy DEMATEL, and fuzzy TOPSIS methods. The proposed model is more suitable than the traditional decision-making methods in prioritizing risk concerning cost, time, and quality.

  12. Lead Zinc Project of Xingwang Mining Commencing Construction in Pingnan County of Guangxi Province

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    <正>Lead zinc project of Xingwang Mining Ltd.in Pingnan County formally started its construc- tion.The project is mainly engaged in the min- ing of lead zinc mine in Guancheng Town.The construction will be carried out in 3 phases for the construction of one mine with annual capacity of 200,000 tons of ore,one lead-zinc

  13. DEVELOPMENT OF ALGORITHMS OF NUMERICAL PROJECT OPTIMIZATION FOR THE CONSTRUCTION AND RECONSTRUCTION OF ENGINEERING STRUCTURES

    Directory of Open Access Journals (Sweden)

    MENEJLJUK О. І.

    2016-08-01

    Full Text Available Raising of problem. The paper analyzes the numerical optimization methods of construction projects and reconstruction of engineering structures. Purpose. Possible ways of modeling organizational and technological solutions in construction are presented. Based on the analysis the most effective method of optimization by experimental and statistical modeling with application of modern computer programs in the field of project management and mathematical statistics is selected. Conclusion. An algorithm for solving optimization problems by means of experimental and statistical modeling is developed.

  14. Analysis of the Influences of the Western Petroleum Products Pipeline Project on Soil Environmental Quality%西部成品油管道工程对土壤环境质量影响研究

    Institute of Scientific and Technical Information of China (English)

    黄勇; 文雯; 陈忱; 蔡体久; 肖强; 马生丽

    2013-01-01

    通过西部原油成品油管道工程土壤环境中对照样点与扰动点的pH值、有机质(TOC)、全氮(TN)、全磷(TP)现场调查和土壤监测,结果表明:对照样点与扰动点表、底层土壤的各项指标均存在显著相关性(N=25,p<0.01);对照样与扰动样表、底层土壤指标的差异性受到管线建设前后干扰,表层土壤:pH值、全氮、全磷都没有显著差异(成对数据t检验,自由度d f=24,p>0.01),有机质差异显著.底层土壤:pH值、全磷都没有显著差异(自由度df=24,p>0.01),有机质和全氮差异显著;各样点之间土壤属性的差别很大,但同一个点受干扰前后各土壤属性值差别不大,说明工程建设对土壤的影响在可接受的范围内.%Field investigation and soil monitoring were carried out of pH,TOC (total organic carbon),TN (total nitrogen) and TP (total phosphorus) of the environmental soils at the control sampling points and the disturbance points of PetroChina Western Crude-Oil and Petroleum Products Pipeline Project.The results showed that the soil indicators studied were significantly associated(N=25,p<0.01)between the top soil layer and the subsoil layer at the control points and the disturbance points.The differences in the soil indicators at the top soil layer and the subsoil layer at the control points and the disturbance points were interfered by the pipeline construction.In the surface soil,pH,TN and TP were not significantly different between the control points and the disturbance points (paired-sample t test,d f=24,p>0.01),while TOC was significantly different.In the bottom soils,pH and TP were not significantly different (df =24,p>0.01) but TOC and TN were significantly different between the control points and the disturbance points.However,the disturbance caused by the Pipeline Project resulted in no significant differences in the soil properties investigated,suggesting that the impact of the construction on soil remains in an

  15. Effective factor of virtual team: Resolving communication breakdown in IBS construction project

    Science.gov (United States)

    Pozin, Mohd Affendi Ahmad; Nawi, Mohd. Nasrun Mohd.

    2016-08-01

    Currently, rapid development of information technology has provided new opportunities to organisation toward increasing the effectiveness of collaboration and teamwork management. Thus the virtual team approach has been implemented in numerous of field. However, there is limited study of virtual team in construction project management. Currently IBS project is still based on traditional construction process which is isolation team working environment. Therefore this approach has been declared as a main barrier to ensure cooperative working relation in term of communication and information in between project stakeholders. Thus, this paper through literature review is attempted to present a discussion of the virtual team approach toward IBS project in developing effective team communication during construction project.

  16. Transmission pipeline calculations and simulations manual

    CERN Document Server

    Menon, E Shashi

    2014-01-01

    Transmission Pipeline Calculations and Simulations Manual is a valuable time- and money-saving tool to quickly pinpoint the essential formulae, equations, and calculations needed for transmission pipeline routing and construction decisions. The manual's three-part treatment starts with gas and petroleum data tables, followed by self-contained chapters concerning applications. Case studies at the end of each chapter provide practical experience for problem solving. Topics in this book include pressure and temperature profile of natural gas pipelines, how to size pipelines for specified f

  17. A quick guide to pipeline engineering

    CERN Document Server

    Alkazraji, D

    2008-01-01

    Pipeline engineering requires an understanding of a wide range of topics. Operators must take into account numerous pipeline codes and standards, calculation approaches, and reference materials in order to make accurate and informed decisions.A Quick Guide to Pipeline Engineering provides concise, easy-to-use, and accessible information on onshore and offshore pipeline engineering. Topics covered include: design; construction; testing; operation and maintenance; and decommissioning.Basic principles are discussed and clear guidance on regulations is provided, in a way that will

  18. Analysis of Air Force Wartime Contracted Construction Project Performance

    Science.gov (United States)

    2015-03-26

    KPIs ) identified in current literature. Chan’s meta-analysis of KPIs found that time and cost are the primary objective indicators of a successful...Smith, Currie & Hancock, 2009). 46 Key performance indicators ( KPI ) were also used as input factors to analyze differences between contracts...Chan, et al. (2002) performed a meta-analysis of KPIs , as determined by construction researchers. They found that the most predictive performance

  19. Status of the IUCF Cooler Injector Synchrotron Construction Project

    Science.gov (United States)

    Friesel, D. L.; Lee, S. Y.

    1997-05-01

    Construction of a 2.24 T-m, rapid-cycling booster synchrotron is nearing completion at IUCF. The synchrotron is designed to accelerate protons to 220 MeV and will replace the IUCF isochronous cyclotrons as an injector of polarized light ion beams into the 3.6 T-m electron-cooled storage ring. CIS (Cooler Injector Synchrotron), with a circumference of 1/5th the Cooler ring, will fill the Cooler to about 10^11 protons via ``boxcar" stacking in a few seconds for research. The compact booster design, which can accelerate protons to energies between 60 and 220 MeV, is also well suited for use in proton therapy applications. At 28 months into the construction program, all major ring elements (dipoles, quads, injector linac, RF system) are fabricated, assembled, installed and in some cases, commissioned. Ring beam injection and ramping studies are scheduled to start in May, 1997 and Cooler injection studies are planned for late 1997. The booster design properties, component commissioning results and construction completion schedule will be summarized.

  20. Implementation of an approach to replacing the construction hydrostatic test with an alternative integrity validation

    Energy Technology Data Exchange (ETDEWEB)

    Glover, Alan; Purcell, Jennifer; Rudge, Paul; Hudson, Bob [TransCanada PipeLines Ltd., Toronto (Canada)

    2005-07-01

    Hydrostatic testing has been an accepted method of verifying the integrity of newly constructed pipelines prior to putting them in-service since the mid 1950s. Since that time many things have changed that have reduced the incidence of hydrostatic test failures both during the strength and leak testing portion. Critical to these changes have been improvements in pipeline design, materials and construction technology. Using these advancements TransCanada developed an Alternative Integrity Validation (AIV) approach that could be used to replace the field hydrostatic test on natural gas pipelines. This process was validated with key stake holders and the regulatory body (Alberta Energy Utilities Board) and experimental approval was given to apply the approach on a recent pipeline project. The paper will describe the background to the approach, the AIV process and its successful application on an onshore pipeline project completed in March 2005. The paper will also describe the current limitations in applying the approach and path forward. (author)

  1. Optimal Scheduling of Railway Track Possessions in Large-Scale Projects with Multiple Construction Works

    DEFF Research Database (Denmark)

    Li, Rui; Roberti, Roberto

    2017-01-01

    This paper addresses the railway track possession scheduling problem (RTPSP), where a large-scale railway infrastructure project consisting of multiple construction works is to be planned. The RTPSP is to determine when to perform the construction works and in which track possessions while satisf...

  2. An innovative time-cost-quality tradeoff modeling of building construction project based on resource allocation.

    Science.gov (United States)

    Hu, Wenfa; He, Xinhua

    2014-01-01

    The time, quality, and cost are three important but contradictive objectives in a building construction project. It is a tough challenge for project managers to optimize them since they are different parameters. This paper presents a time-cost-quality optimization model that enables managers to optimize multiobjectives. The model is from the project breakdown structure method where task resources in a construction project are divided into a series of activities and further into construction labors, materials, equipment, and administration. The resources utilized in a construction activity would eventually determine its construction time, cost, and quality, and a complex time-cost-quality trade-off model is finally generated based on correlations between construction activities. A genetic algorithm tool is applied in the model to solve the comprehensive nonlinear time-cost-quality problems. Building of a three-storey house is an example to illustrate the implementation of the model, demonstrate its advantages in optimizing trade-off of construction time, cost, and quality, and help make a winning decision in construction practices. The computational time-cost-quality curves in visual graphics from the case study prove traditional cost-time assumptions reasonable and also prove this time-cost-quality trade-off model sophisticated.

  3. An Innovative Time-Cost-Quality Tradeoff Modeling of Building Construction Project Based on Resource Allocation

    Directory of Open Access Journals (Sweden)

    Wenfa Hu

    2014-01-01

    Full Text Available The time, quality, and cost are three important but contradictive objectives in a building construction project. It is a tough challenge for project managers to optimize them since they are different parameters. This paper presents a time-cost-quality optimization model that enables managers to optimize multiobjectives. The model is from the project breakdown structure method where task resources in a construction project are divided into a series of activities and further into construction labors, materials, equipment, and administration. The resources utilized in a construction activity would eventually determine its construction time, cost, and quality, and a complex time-cost-quality trade-off model is finally generated based on correlations between construction activities. A genetic algorithm tool is applied in the model to solve the comprehensive nonlinear time-cost-quality problems. Building of a three-storey house is an example to illustrate the implementation of the model, demonstrate its advantages in optimizing trade-off of construction time, cost, and quality, and help make a winning decision in construction practices. The computational time-cost-quality curves in visual graphics from the case study prove traditional cost-time assumptions reasonable and also prove this time-cost-quality trade-off model sophisticated.

  4. Relevance of Partnering as an Alternative Approach to Management of Construction Projects in Ghana

    Science.gov (United States)

    Ansah, Samuel Kwame; Awere, Eric; Edu-Buandoh, Kobina Badu Micah

    2016-01-01

    Understandably, clients in both the public and the private sectors in Ghanaian construction industry have become increasingly dissatisfied. What they see is unpredictability and under-performance. What they receive is too often of poor quality, late and over-priced. More often contractors enter the construction project focusing on achieving their…

  5. China Pins Hopes on Pipeline with Russia

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    @@ China still has faith in the gigantic Sino-Russia oil pipeline, despite reports which said that Russia is inclined to build a competing pipeline in favor of Japan. CNPC, the company representing China to negotiate with Russia on the project, is reported to continue its preparation work to receive Russian crude.

  6. Vulnerability of pipelines

    Energy Technology Data Exchange (ETDEWEB)

    Anon.

    2006-07-01

    Although pipelines may be damaged due to natural sources such as stress corrosion cracking (SCC) or hydrogen-induced cracking (HIC), most pipeline damages are a result of third-party interference, such as unauthorized construction in a right of way. Pipelines are also among the prime targets for sabotage because interruptions in energy distribution can render large segments of a population debilitated. The importance of protecting critical infrastructure was emphasized in this theme issue which disseminated information on vulnerability of pipelines due to third-party intrusions, both intentional and unintentional. It summarized the 10 presentations that were delivered at a pipelines security forum in Calgary, Alberta, addressing Canadian and U.S. government and industry approaches to oil and natural gas pipeline security. The opening keynote address remarked on the evolution of international terror networks, the targeting of the energy sector, and the terrorist threat and presence in Canada. Policies towards critical energy infrastructure protection (CIP) were then examined in light of these threats. A policy shift away from traditional defensive protective security towards an offensive intelligence-led strategy to forestall terrorist threats was advocated. Energy sector representatives agreed that Canada needs an effective national lead agency to provide threat assessments, alert notification, and coordination of information pertaining to CIP. It was agreed that early warning information must come from Canadian as well as U.S. sources in order to be pertinent. The conference session on information collection concentrated on defining what sort of threat information is needed by the energy sector, who should collect it and how should it be shared. It was emphasized that government leadership should coordinate threat reporting and disseminate information, set standards, and address the issues of terrorism risk insurance. Concern was raised about the lack of

  7. Using Geographic Information System - GIS - for pipeline management: case of Urucu-Coari LPG pipeline

    Energy Technology Data Exchange (ETDEWEB)

    Furquim, Maysa P.O. [ESTEIO Engenharia e Aerolevantamentos S.A, Curitiba, PR (Brazil)

    2009-07-01

    This technical paper seeks to demonstrate the stages run during the GIS - Geographic Information System accomplishment as for the follow-up of a pipeline work. The GLPDUTO (LPG Pipeline) Urucu-Coari work shall be the focus of this paper. The main challenges in the compilation of data generated in the work site will be presented, as well the importance for the definition of which data should be relevant, so that the construction company and PETROBRAS could follow up its evolution. The GIS development has been performed since January 2007 and should be finished by the first semester of 2009. The following stages for GIS definition for the work management will be presented: brief history of the project - project conception, purpose, structure implemented and accomplishment expectations; survey data in loco - raw data obtained directly during the carrying out of the work and generated in the project and implantation stage; treated data - data resulting from raw data, but already treated as for the GIS environment; routines developed - specific tools created for the consolidation of the data to be manipulated on GIS in an optimized and functional way; result presented - GIS in its final conception, developed and input with the routines and data regarding the project. (author)

  8. Evaluating Levels of Project Planning and their Effects on Performance in the Nigerian Construction Industry

    Directory of Open Access Journals (Sweden)

    Godwin Idoro

    2012-11-01

    Full Text Available This study compares the level of project planning on public andprivate sectors projects and its impact on performance. Thepurpose is to create awareness of the level and effectivenessof the planning done by public and private clients in the deliveryof construction projects. A questionnaire survey administeredto a sample of 130 client representatives selected by stratifi edrandom sampling from the population of public and private clientsin the Nigerian construction industry is used and analysed usingdescriptive statistics, the t-test and Spearman correlation test. Theresults show that the level of preconstruction planning on privatesector projects is higher than that of public sector projects whilethe level of contract planning done by the latter is higher thanthat of the former. Furthermore, the performance of private sectorprojects is higher than that of public sector projects in many of theparameters used. However, the level of preparation of life-cyclecharts that concern project delivery time in both public and privatesectors projects is low and the level of project planning in the twocategories of projects has a limited impact on project performance.The understanding of how public and private sectors projectsperform in planning and its impact are expected to assist publicand private clients to know the challenges ahead of them in theireffort to improve the planning and performance of their projects.

  9. Project-Based Learning and Student Knowledge Construction during Asynchronous Online Discussion

    Science.gov (United States)

    Koh, Joyce Hwee Ling; Herring, Susan C.; Hew, Khe Foon

    2010-01-01

    Project-based learning engages students in problem solving through artefact design. However, previous studies of online project-based learning have focused primarily on the dynamics of online collaboration; students' knowledge construction throughout this process has not been examined thoroughly. This case study analyzed the relationship between…

  10. Perceptions and Meanings Constructed by Participants in a Four-Year Instructional Coaching Project

    Science.gov (United States)

    Perry Hummons, Monica

    2012-01-01

    This qualitative study was conducted in the Midwestern U.S. It explored the stories of 27 educators who participated in a four-year instructional coaching project in a large urban school district. Subjects shared their perceptions of and meanings they constructed as a result of their experiences in the coaching project through participation in a…

  11. Hybrid Simulation Environment for Construction Projects: Identification of System Design Criteria

    Directory of Open Access Journals (Sweden)

    Mohamed Moussa

    2014-01-01

    Full Text Available Large construction projects are complex, dynamic, and unpredictable. They are subject to external and uncontrollable events that affect their schedule and financial outcomes. Project managers take decisions along the lifecycle of the projects to align with projects objectives. These decisions are data dependent where data change over time. Simulation-based modeling and experimentation of such dynamic environment are a challenge. Modeling of large projects or multiprojects is difficult and impractical for standalone computers. This paper presents the criteria required in a simulation environment suitable for modeling large and complex systems such as construction projects to support their lifecycle management. Also presented is a platform that encompasses the identified criteria. The objective of the platform is to facilitate and simplify the simulation and modeling process and enable the inclusion of complexity in simulation models.

  12. Information System Specific in Achievement of Construction Projects

    Directory of Open Access Journals (Sweden)

    Cătălin Onuţu

    2005-01-01

    Full Text Available Because of the economic changes from our country and also of the rapid adjusting necessity to the requirement of a market economy, it is observed a huge request for information, and especially techniques, tools, methodologies that would facilitate the managerial activity in any field. In the construction field the problem is even more serious because of specific aspects and of the traditional information system that is very stiff. Formal and bureaucratic, and this makes the adjusting process of specialist to the economic realities to be more difficult.

  13. 基于属性识别理论的油气管道施工质量风险评价%Risk assessment on constructing quality of oil & gas pipeline based on attribute recognition theory

    Institute of Scientific and Technical Information of China (English)

    鲜涛; 姚安林; 李熠辰; 万甫; 周旭

    2015-01-01

    In order to realistically evaluate the risk on construction quality of oil &gas pipelines, a risk evaluation method was put forward based on attribute recognition model.Firstly, the attribute space matrix was established and orderly divided.The combination weight assigning of entropy weight method with objective weight assigning and G1 method with subjective weight assigning was applied to determine the weight and attribute measurement of each e-valuation index.The confidence criterion was used to recognize the model and obtain the possibility level of quality reduction in pipelines construction.Finally, the result of quality reduction in pipelines construction was evaluated, and the risk grade was obtained by risk matrix.The given example showed that the construction quality of oil&gas pipelines is greatly affected by the quality and wrong behaviors of personnel, construction technology and manage-ment method.The possibility that the construction quality of oil&gas pipelines will reduce in section S4 and S5 is higher.There is a high level of risk in section S4 and S5 by risk matrix.Therefore, attention and concern should be paid to manage and control the risk factors in section S4 and S5 by pipeline company and construction company..%为了贴近客观实际地评价油气管道施工质量风险,提出了基于属性识别模型的风险评价方法。首先建立属性空间矩阵并进行有序分割,采用客观赋权的熵权法和主观赋权的G1法组合赋权确定各评价指标权重和属性测度,利用置信度准则对模型进行识别,得到管道施工质量降低可能性等级。然后评价管道施工质量降低的后果,依据风险矩阵得到施工质量风险等级。算例表明:人员的素质、错误行为、施工工艺方法和管理方法对油气管道施工质量的影响较大。管段S4、S5发生油气管道施工质量降低的可能性偏高,通过风险矩阵得到管段S4、S5的风险等级

  14. Structural equation model to investigate the factors influencing quality performance in Indian construction projects

    Indian Academy of Sciences (India)

    S Shanmugapriya; K Subramanian

    2015-09-01

    Indian construction industry has seen remarkable growth and it is an integral part of the economy with massive foreign investments which demands quality construction. The pressure to reduce time and cost of construction increases the risk on the part of stakeholders with respect to quality and safety of the construction. The problem is serious and dangerous in developing countries like India which requires focus and attention for sustained growth in construction sector. This research reports on the adoption and development of structural equation model to study the fundamental relationship between five enablers of European Foundation for quality management (EFQM) framework to improve the quality performance in Indian construction projects. Data collected from clients, contractors and consultants of Indian construction industry through questionnaire survey was used to analyze the conceptual framework using smart PLS software. The conceptual model in this research includes eight hypotheses and T-statistics values is used for checking the significance of the hypothesis. The findings of the study revealed that leadership factor has strongest total effect on people factor (Path coefficient = 0.77) and process factor has strongest effect in achieving the goals of quality performance improvement in construction projects (Path coefficient = 0.7). The results indicate that Indian construction organizations must give top priority to leadership and process related problems in various phases of the project to result in continuous improvement in quality performance.

  15. Coal-based 50 kt/a Vinyl Acetate Project Is To Be Constructed in Bashan, Yunnan Province

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    @@ The largest in western Yunnan Chemical projects -the 200 kt/a calcium carbide project and the 50 kt/a vinyl acetate project- will be officially constructed in Baoshan city by the Yunwei Company under Yunnan Coal Chemical Group.

  16. Jiangxi Copper Lead Zinc Smelting Project with an Investment of Nearly 5 billion yuan Started Construction in Hukou

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    <正>Recently,Jiangxi Copper Group Lead Zinc Smelting Project,a key construction project of Jiangxi Province’s "Ten,Hundred,Thousand Project" (referring to the plan to have a number of leading enterprises with annual sales topping

  17. The MIS Pipeline Toolkit

    Science.gov (United States)

    Teuben, Peter J.; Pound, M. W.; Storm, S.; Mundy, L. G.; Salter, D. M.; Lee, K.; Kwon, W.; Fernandez Lopez, M.; Plunkett, A.

    2013-01-01

    A pipeline toolkit was developed to help organizing, reducing and analyzing a large number of near-identical datasets. This is a very general problem, for which many different solutions have been implemented. In this poster we present one such solution that lends itself to users of the Unix command line, using the Unix "make" utility, and adapts itself easily to observational as well as theoretical projects. Two examples are given, one from the CARMA CLASSy survey, and another from a simulated kinematic survey of early galaxy forming disks. The CLASSy survey (discussed in more detail in three accompanying posters) consists of 5 different star forming regions, observed with CARMA, each containing roughly 10-20 datasets in continuum and 3 different molecular lines, that need to be combined in final data cubes and maps. The strength of such a pipeline toolkit shows itself as new data are accumulated, the data reduction steps are improved and easily re-applied to previously taken data. For this we employed a master script that was run nightly, and collaborators submitted improved script and/or pipeline parameters that control these scripts. MIS is freely available for download.

  18. Using BIM to Improve the Design and Construction of Bridge Projects: A Case Study of a Long-span Steel-box Arch Bridge Project

    OpenAIRE

    Wenping Liu; Hongling Guo; Heng Li; Yan Li

    2014-01-01

    More and more mega-complex bridge projects are being or will be built worldwide. At the same time, the design and construction of such projects involve more and more challenges, e.g., complex structural designs, complicated construction environments, etc. This research study aims to apply BIM (Building Information Modelling) to bridge projects to improve the efficiency and effectiveness of design and construction. Through the analysis of the characteristics of bridge projects and relevant, as...

  19. A new approach for modelling variability in residential construction projects

    Directory of Open Access Journals (Sweden)

    Mehrdad Arashpour

    2013-06-01

    Full Text Available The construction industry is plagued by long cycle times caused by variability in the supply chain. Variations or undesirable situations are the result of factors such as non-standard practices, work site accidents, inclement weather conditions and faults in design. This paper uses a new approach for modelling variability in construction by linking relative variability indicators to processes. Mass homebuilding sector was chosen as the scope of the analysis because data is readily available. Numerous simulation experiments were designed by varying size of capacity buffers in front of trade contractors, availability of trade contractors, and level of variability in homebuilding processes. The measurements were shown to lead to an accurate determination of relationships between these factors and production parameters. The variability indicator was found to dramatically affect the tangible performance measures such as home completion rates. This study provides for future analysis of the production homebuilding sector, which may lead to improvements in performance and a faster product delivery to homebuyers. 

  20. A new approach for modelling variability in residential construction projects

    Directory of Open Access Journals (Sweden)

    Mehrdad Arashpour

    2013-06-01

    Full Text Available The construction industry is plagued by long cycle times caused by variability in the supply chain. Variations or undesirable situations are the result of factors such as non-standard practices, work site accidents, inclement weather conditions and faults in design. This paper uses a new approach for modelling variability in construction by linking relative variability indicators to processes. Mass homebuilding sector was chosen as the scope of the analysis because data is readily available. Numerous simulation experiments were designed by varying size of capacity buffers in front of trade contractors, availability of trade contractors, and level of variability in homebuilding processes. The measurements were shown to lead to an accurate determination of relationships between these factors and production parameters. The variability indicator was found to dramatically affect the tangible performance measures such as home completion rates. This study provides for future analysis of the production homebuilding sector, which may lead to improvements in performance and a faster product delivery to homebuyers.

  1. Improvements Needed in Managing Scope Changes and Oversight of Construction Projects at Camp Lemonnier, Djibouti

    Science.gov (United States)

    2016-09-30

    Improvements Needed in Managing Scope Changes and Oversight of Construction Projects at Camp Lemonnier, Djibouti S E P T E M B E R 3 0 , 2 0 1 6 Report...Improvements Needed in Managing Scope Changes and Oversight of Construction Projects at Camp Lemonnier, Djibouti Visit us at www.dodig.mil Objective We...Findings (cont’d) ii │ DODIG-2016-141 (Project No. D2014-D000RE-0157.000) Results in Brief Improvements Needed in Managing Scope Changes and Oversight

  2. Prioritization of Effective Risk Factors on Oil Industry Construction Projects (By PMBOK Standard Approach

    Directory of Open Access Journals (Sweden)

    Hossein Baharmand

    2013-06-01

    Full Text Available This study is an applied, analytic-descriptive research in terms of nature. It is thus an analysis in which a sample has been applied for data collection and it is descriptive since its variables are assessed and reported as they are in reality. This study seeks to identify effective risks existing in construction industry specifically in the national macro projects such as oil industry projects through utilizing Project Management Body of Knowledge (PMBOK model and to estimate the relative impact of each risk on the projects. It aims at prioritizing the effective risk factors on the construction projects (a case study of National Iranian Oil Company. Thus NIOC construction projects, consulting engineers companies and contractor companies in construction projects of oil industry have been selected as the statistical universe to identify and prioritize the risks. Due to the focus of oil industry construction projects on South Pars Special Economic Zone, under planning, implementation or completion phases and with regard to the phases' expansion in terms of number and volume of activities and also strategic features and confidentiality of information, three phases out of 28 ones have been case-studied. It is generally concluded in this study that with respect to the country significant strategic, geopolitical, geographical, economic and military position in the world, it is a matter of great magnitude to regard the risks identification and management as one of the important areas in the project management and to consider it as a national and comprehensive plan when designing and ratifying industrial projects of the country.

  3. Engaged scholarship in construction management research: the adoption of information and communications technology in construction projects

    NARCIS (Netherlands)

    Voordijk, Johannes T.; Adriaanse, Adriaan Maria

    2016-01-01

    The objective is to explore what engaged scholarship (ES) could mean for construction management research in facilitating interactions between practice and theory. ES aims to develop knowledge that advances both science and practice through engagement of scholars with practice. Three types of ES are

  4. Assessing the Risk Factors for Musculoskeletal Disorders in Construction Workers Using PATH, Case Study: Construction Project

    Directory of Open Access Journals (Sweden)

    Shaban parhani

    2017-02-01

    Full Text Available Construction workers experience a high risk of developing musculoskeletal disorders due to the nature of their jobs. This article aimed to evaluate the risk factors of musculoskeletal disorders among construction workers using Posture, Activity Tools and Handling (PATH. This is a sectional, descriptive-analytical study in a construction site in Tehran, Iran. Certain factors were identified namely body posture, weight of carried tools and objects, activities and tools, and their tasks and activities using PATH. PATH sheets were coded for a certain job. Descriptive data and Chi-square test were employed to analyze the data using SPSS.19. Identification and evaluation were performed in three most important stages of construction: foundation, carcass, finishing (elaborate work. The mean age was 33.08±8.97. Body posture included gentle bending posture (21.2%, severe bending (8.2%, bending and twisting (7% and 1.9%, respectively. Body positions, feet, hands, and weight of tools and objects were significantly different in the working stages (P

  5. Safety risk assessment using analytic hierarchy process (AHP) during planning and budgeting of construction projects.

    Science.gov (United States)

    Aminbakhsh, Saman; Gunduz, Murat; Sonmez, Rifat

    2013-09-01

    The inherent and unique risks on construction projects quite often present key challenges to contractors. Health and safety risks are among the most significant risks in construction projects since the construction industry is characterized by a relatively high injury and death rate compared to other industries. In construction project management, safety risk assessment is an important step toward identifying potential hazards and evaluating the risks associated with the hazards. Adequate prioritization of safety risks during risk assessment is crucial for planning, budgeting, and management of safety related risks. In this paper, a safety risk assessment framework is presented based on the theory of cost of safety (COS) model and the analytic hierarchy process (AHP). The main contribution of the proposed framework is that it presents a robust method for prioritization of safety risks in construction projects to create a rational budget and to set realistic goals without compromising safety. The framework provides a decision tool for the decision makers to determine the adequate accident/injury prevention investments while considering the funding limits. The proposed safety risk framework is illustrated using a real-life construction project and the advantages and limitations of the framework are discussed. Copyright © 2013 National Safety Council and Elsevier Ltd. All rights reserved.

  6. Risk Matrix for Delay Causes in Construction Projects in Saudi Arabia

    Directory of Open Access Journals (Sweden)

    Ibrahim Mahamid

    2015-03-01

    Full Text Available Time performance of a project is usually a particularly important consideration for the construction parties. Often, the most troublesome construction disputes involve delay and failure to complete the work in the specified time frame. Many variables have an impact upon construction delay in Saudi Arabia. This study aims at identifying the risk matrix for delay causes in construction projects in Saudi Arabia from consultants’ viewpoint. A questionnaire survey was undertaken of 51 consultants working on construction projects in the Northern Province of Saudi Arabia. Thirty five delay causes were identified through literature review. The study concluded that the top delay causes in construction projects in Saudi Arabia from consultants’ perspective are: bid award for lowest price, changes in material types and specifications during construction, contract management, duration of contract period, fluctuation of prices of materials, frequent changes in design, improper planning, inflationary pressure, lack of adequate manpower, long period between design and time of implementation, payments delay, poor labor productivity and rework.

  7. The Stripe 82 Massive Galaxy Project I: Catalog Construction

    CERN Document Server

    Bundy, Kevin; Saito, Shun; Bolton, Adam; Lin, Yen-Ting; Marason, Claudia; Nichol, Robert C; Schneider, Donald P; Thomas, Daniel; Wake, David A

    2015-01-01

    The Stripe 82 Massive Galaxy Catalog (S82-MGC) is the largest-volume stellar mass-limited sample of galaxies beyond z~1 constructed to date. Spanning 139.4 deg2, the S82-MGC includes a mass-limited sample of 41,770 galaxies with log Mstar > 11.2 to z~0.7, sampling a volume of 0.3 Gpc3, roughly equivalent to the volume of the Sloan Digital Sky Survey-I/II (SDSS-I/II) z 11.2 sample, and geometric masking. We provide near-IR based stellar mass estimates and compare these to previous estimates. All catalog products are made publicly available. The S82-MGC not only addresses previous statistical limitations in high-mass galaxy evolution studies but begins tackling inherent data challenges in the coming era of wide-field imaging surveys.

  8. Robust Optimization for Time-Cost Tradeoff Problem in Construction Projects

    Directory of Open Access Journals (Sweden)

    Ming Li

    2014-01-01

    Full Text Available Construction projects are generally subject to uncertainty, which influences the realization of time-cost tradeoff in project management. This paper addresses a time-cost tradeoff problem under uncertainty, in which activities in projects can be executed in different construction modes corresponding to specified time and cost with interval uncertainty. Based on multiobjective robust optimization method, a robust optimization model for time-cost tradeoff problem is developed. In order to illustrate the robust model, nondominated sorting genetic algorithm-II (NSGA-II is modified to solve the project example. The results show that, by means of adjusting the time and cost robust coefficients, the robust Pareto sets for time-cost tradeoff can be obtained according to different acceptable risk level, from which the decision maker could choose the preferred construction alternative.

  9. Construction Projects Focus on Evaluation and Its Benefits by Pre-planning

    DEFF Research Database (Denmark)

    Larsen, Jesper Kranker; Ussing, Lene Faber; Brunø, Thomas Ditlev

    2013-01-01

    Evaluation and pre-planning are two critical factors which give the project organization and project manager the opportunity to plan, and avoid unexpected situations in the construction process before it starts. The aim of this study is to answer the following two questions: how often are evaluat......Evaluation and pre-planning are two critical factors which give the project organization and project manager the opportunity to plan, and avoid unexpected situations in the construction process before it starts. The aim of this study is to answer the following two questions: how often...... are evaluations carried out? And which trade group focus most on evaluations? The study is based on a questionnaire survey for the most common trade groups in the Danish construction industry, where 167 respondents completed the survey. Findings indicate that the architect’s has most focus on evaluation in both...

  10. Implementation of Six Sigma Method to Maintain The Quality of Construction Projects

    Directory of Open Access Journals (Sweden)

    Yusuf Latief

    2010-10-01

    Full Text Available Six sigma (6-sigma is a method that widely developed in the world, especially in manufacturing industry to decrease failures in achieving good quality in construction projects. The objective of this research is to explore the existing condition of quality management and the aplication of 6-sigma method in maintaining quality of construction projects. Structured interviews to experienced experts and people who were recommended by their companies were conducted. Non-parametric analysis using frequencies distribution procedures were used for analysis. The result shows that existing condition in quality management of construction project in Indonesia have been implemented 6-sigma method approach, that concern with is how to adapt with either from internal or external condition of that project.

  11. PE-3 - a high class pipeline; PE-3 - um oleoduto high-class

    Energy Technology Data Exchange (ETDEWEB)

    Hashiguchi, D. Issao; Santos, J.A. Costa; Medeiros, A. Roberto [GDK Engenharia, Salvador, BA (Brazil); Garcia, Amaury [TRANSPETRO - PETROBRAS Transportes, Rio de Janeiro, RJ (Brazil); Santos, F. Cesar [Superpesa Transportes Especiais e Intermodais, Rio de Janeiro, RJ (Brazil)

    2003-07-01

    Pipeline PE-3, with a length of approximately 17 Km mainly inside of Guanabara Bay, connects the refinery of Duque de Caxias to the terminal of the Ilha D'Agua. It is used to export dark products from the refinery. Product transfer, by operational necessity, is conducted at a temperature of 75 deg C. This introduces a considerable load of tension on the pipeline, in addition to creating a fatigue-inducing thermal cycle. Because of this, and unlike almost all other existing oil and gas pipelines, PE-3 posses a zig zag configuration, alternating a straight tube with a curve of 10 degrees. This stands out as an innovative concept. Their are only two other similar installations in the world, but in very different conditions, thus conferring a pioneering aspect on this pipeline. Due to its criticality, the pipeline is predicated on complete certification in its entirety, from design to operation and in adherence with the strictest requirements. The environmental conditions encountered along its right of way, and the constructive tolerances imposed by the project, obligate the adoption of constructive and technical solutions that are themselves innovative in the terrestrial and marine realms. The principal objective of this work is to present a general overview of the methodology employed in PE-3 construction, installation and assembly. (author)

  12. 78 FR 79688 - Paiute Pipeline Company; Notice of Intent To Prepare an Environmental Assessment for the Planned...

    Science.gov (United States)

    2013-12-31

    ... Center, 700 Moren Way, Elko, Nevada 89801. This public meeting is designed to provide you with more... underground natural gas pipeline and appurtenant facilities in Elko County, Nevada, extending from the Ruby... a result of blasting to remove existing surface and bedrock during Project construction....

  13. 77 FR 70429 - Gulf South Pipeline Company, LP; Notice of Intent To Prepare an Environmental Assessment for the...

    Science.gov (United States)

    2012-11-26

    ... operation of facilities by Gulf South Pipeline Company, LP (Gulf South) in Jasper, Forrest, Perry, Greene... its decision-making process to determine whether the project is in the public convenience and... an easement to construct, operate, and maintain the planned facilities. The company would seek...

  14. Quantitative Assessment of Implicit Environmental Impacts of Construction Projects

    Institute of Scientific and Technical Information of China (English)

    SHUAI Xiao-gen; LI Hui-qiang; TANG Li

    2009-01-01

    Assessment system of implicit environmental impacts was established including environmental impact indicator, resources consumption indicator and energy consumption indicator. The quantification of environmental impact indicators is based on the life cycle assessment system of the Society of Environmental Toxicology and Chemistry (SETAC) and the evaluation software BEES. Normalization reference values and weights of 12 categories of environmental impacts were identified, and the environmental impact indicators in the phases of raw material extraction, transportation, manufacturing, use and end of life were analyzed. By analyzing the environmental performance of a university refectory as a case study, it is demonstrated that human health, global warming and acidification are the first three environmental impacts in 12 categories. The total implicit environmental impact load per square meter of this project is 18.448×10~(-2) standard human equivalent weight. Moreover, 97.3% of total environmental impacts occur in the phase of raw material extraction.

  15. Constructive commutative algebra projective modules over polynomial rings and dynamical Gröbner bases

    CERN Document Server

    Yengui, Ihsen

    2015-01-01

    The main goal of this book is to find the constructive content hidden in abstract proofs of concrete theorems in Commutative Algebra, especially in well-known theorems concerning projective modules over polynomial rings (mainly the Quillen-Suslin theorem) and syzygies of multivariate polynomials with coefficients in a valuation ring. Simple and constructive proofs of some results in the theory of projective modules over polynomial rings are also given, and light is cast upon recent progress on the Hermite ring and Gröbner ring conjectures. New conjectures on unimodular completion arising from our constructive approach to the unimodular completion problem are presented. Constructive algebra can be understood as a first preprocessing step for computer algebra that leads to the discovery of general algorithms, even if they are sometimes not efficient. From a logical point of view, the dynamical evaluation gives a constructive substitute for two highly nonconstructive tools of abstract algebra: the Law of Exclud...

  16. MAKER2: an annotation pipeline and genome-database management tool for second-generation genome projects

    Directory of Open Access Journals (Sweden)

    Holt Carson

    2011-12-01

    Full Text Available Abstract Background Second-generation sequencing technologies are precipitating major shifts with regards to what kinds of genomes are being sequenced and how they are annotated. While the first generation of genome projects focused on well-studied model organisms, many of today's projects involve exotic organisms whose genomes are largely terra incognita. This complicates their annotation, because unlike first-generation projects, there are no pre-existing 'gold-standard' gene-models with which to train gene-finders. Improvements in genome assembly and the wide availability of mRNA-seq data are also creating opportunities to update and re-annotate previously published genome annotations. Today's genome projects are thus in need of new genome annotation tools that can meet the challenges and opportunities presented by second-generation sequencing technologies. Results We present MAKER2, a genome annotation and data management tool designed for second-generation genome projects. MAKER2 is a multi-threaded, parallelized application that can process second-generation datasets of virtually any size. We show that MAKER2 can produce accurate annotations for novel genomes where training-data are limited, of low quality or even non-existent. MAKER2 also provides an easy means to use mRNA-seq data to improve annotation quality; and it can use these data to update legacy annotations, significantly improving their quality. We also show that MAKER2 can evaluate the quality of genome annotations, and identify and prioritize problematic annotations for manual review. Conclusions MAKER2 is the first annotation engine specifically designed for second-generation genome projects. MAKER2 scales to datasets of any size, requires little in the way of training data, and can use mRNA-seq data to improve annotation quality. It can also update and manage legacy genome annotation datasets.

  17. MAKER2: an annotation pipeline and genome-database management tool for second-generation genome projects.

    Science.gov (United States)

    Holt, Carson; Yandell, Mark

    2011-12-22

    Second-generation sequencing technologies are precipitating major shifts with regards to what kinds of genomes are being sequenced and how they are annotated. While the first generation of genome projects focused on well-studied model organisms, many of today's projects involve exotic organisms whose genomes are largely terra incognita. This complicates their annotation, because unlike first-generation projects, there are no pre-existing 'gold-standard' gene-models with which to train gene-finders. Improvements in genome assembly and the wide availability of mRNA-seq data are also creating opportunities to update and re-annotate previously published genome annotations. Today's genome projects are thus in need of new genome annotation tools that can meet the challenges and opportunities presented by second-generation sequencing technologies. We present MAKER2, a genome annotation and data management tool designed for second-generation genome projects. MAKER2 is a multi-threaded, parallelized application that can process second-generation datasets of virtually any size. We show that MAKER2 can produce accurate annotations for novel genomes where training-data are limited, of low quality or even non-existent. MAKER2 also provides an easy means to use mRNA-seq data to improve annotation quality; and it can use these data to update legacy annotations, significantly improving their quality. We also show that MAKER2 can evaluate the quality of genome annotations, and identify and prioritize problematic annotations for manual review. MAKER2 is the first annotation engine specifically designed for second-generation genome projects. MAKER2 scales to datasets of any size, requires little in the way of training data, and can use mRNA-seq data to improve annotation quality. It can also update and manage legacy genome annotation datasets.

  18. Stress analysis of parallel oil and gas steel pipelines in inclined tunnels

    OpenAIRE

    Wu, Xiaonan; Lu, Hongfang; Wu, Shijuan

    2015-01-01

    Geological conditions along long distance pipelines are complex. In consideration of differences in elevation and terrain obstacles, long distance pipelines are commonly laid through tunnels. Oil and gas pipelines are often laid side by side to reduce construction costs and minimize geological impact. The layout and construction of parallel oil and gas pipelines are more complex than those of single pipelines. In order to reduce safety hazards, it is necessary to carry out stress analysis of ...

  19. An Index to Measure Sustainability of a Business Project in the Construction Industry: Lithuanian Case

    Directory of Open Access Journals (Sweden)

    Nomeda Dobrovolskienė

    2015-12-01

    Full Text Available The continuous growth of the world population, resource scarcity and the threat of climate change pose numerous environmental and social problems to the world. Therefore, much hope is put in the concept of sustainability. Companies are increasingly coming under strong global pressure to incorporate sustainability considerations into their project decision-making process. Business projects in the construction industry are among the most important, as this sector is one of the largest sectors and of major importance for the national economy and therefore has a huge impact on the environment and society. Thus, we have to explore ways to integrate sustainability into the management of those projects. This paper presents a composite sustainability index of a project (CSIP which has been created following a review of existing literature and a pilot research study. A pilot research study was conducted in the Lithuanian construction industry between January 2015 and June 2015. Sustainability criteria were chosen and grouped on the basis of the analysis of the literature and different standards relating to sustainability applicable in the construction industry. A survey was used to select and rank the most important sustainability criteria. The index was constructed using multi-criteria decision-making methods. The results of the pilot study revealed that practitioners in the Lithuanian construction sector attach most importance to 15 sustainability criteria. A composite sustainability index of a project combining all these criteria may be useful in assessing the sustainability of a business project and making decisions regarding project portfolio selection and financial resource allocation. When addressing the issue of financial resource allocation in a project portfolio, the decision-maker could take into account not only the project’s return and risk, but also its sustainability. The understanding of this study should enable companies to execute

  20. Power Grid Construction Project Portfolio Optimization Based on Bi-level programming model

    Science.gov (United States)

    Zhao, Erdong; Li, Shangqi

    2017-08-01

    As the main body of power grid operation, county-level power supply enterprises undertake an important emission to guarantee the security of power grid operation and safeguard social power using order. The optimization of grid construction projects has been a key issue of power supply capacity and service level of grid enterprises. According to the actual situation of power grid construction project optimization of county-level power enterprises, on the basis of qualitative analysis of the projects, this paper builds a Bi-level programming model based on quantitative analysis. The upper layer of the model is the target restriction of the optimal portfolio; the lower layer of the model is enterprises’ financial restrictions on the size of the enterprise project portfolio. Finally, using a real example to illustrate operation proceeding and the optimization result of the model. Through qualitative analysis and quantitative analysis, the bi-level programming model improves the accuracy and normative standardization of power grid enterprises projects.

  1. A fuzzy pert approach to evaluate plant construction project scheduling risk under uncertain resources capacity

    Directory of Open Access Journals (Sweden)

    Hsian Jong Hsiau

    2009-07-01

    Full Text Available A plant construction project always involves lots of activities. Precise information about the activities duration is unfortunately unavailable due to the uncertain resources capacity. The fuzzy program evaluation and review technique (PERT has been widely applied to solve the fuzzy project scheduling problem. This paper presents an extended fuzzy PERT approach with four major improvement aspects to support the construction project scheduling management: 1 Evaluate operation fuzzy times based on available working volumes, resources quantity and fuzzy capacity of resources, 2 Adopting a maximal alpha_i-level cut method to compare the fuzzy precedent activities times to determine the reasonable earliest starting times of each activity, 3 Using fuzzy algebra method instead of fuzzy subtraction method to compute the fuzzy latest starting times and 4 Developing a project scheduling risk index (PSRI to assist the decision maker to evaluate the project scheduling risk. Simulations experiments are conducted and demonstrated satisfactory results.

  2. Assessment of Lean Construction Principles: A Case Study at Semarang Medical Centre Hospital Project

    Directory of Open Access Journals (Sweden)

    Matias Roy Adi Wijaya

    2016-06-01

    Full Text Available The lean construction frameworks have been developed for years to enhance the poor performance of Indonesian project delivery system which influenced by the waste of non-value adding activities. Never the less most of the developments were limited on working process and lack in people empowerment. Toyota Way which integrate working process optimization and people empowerment, was developed as a lean construction frame works. This paper aimed to assess the implementation of Toyota Way principles in project delivery system by observing project’s delivery current state (status quo. The assessment began by conducting a questionnaire survey about Toyota Way implementation which then validated by interview with involved stakeholders and field observation. The assessment showed that project’s stakeholders were still unfamiliar with Toyota Way concept. Although some Toyota Way guidelines have been used in projects completion process such as visual management and training program, it found that those guidelines had not fully implemented. The project delivery system was lack of process focus and concerns more on relationship inter-parties. It also found thatToyota Way implementation will constrained by the difficulties to change the status quo of project delivery. Moreover, it seems that construction projects need practical guidelines to simplify the Toyota Way implementation in project delivery system such as project flow evaluation and system of reflection.

  3. An Evaluation of the use of ADR in the Nigerian Public Construction Project Disputes

    Directory of Open Access Journals (Sweden)

    Falilat Olubunmi Idowu

    2015-03-01

    Full Text Available Today’s construction projects are becoming more complex and more capital intensive. Governments of developing countries of the world are responsible for the provision of infrastructural facilities to its citizenry. Many researchers have however found that these projects are delivered late by contractors and disputes have been found as a major cause of such late deliveries. Disputes have also been found as a cause of cost overruns on construction projects. Therefore the use of ADR (Alternative Dispute Resolution in resolving construction disputes cannot be over emphasized. This study examines the issues which militate against the use of ADR as well as the ADR techniques which give satisfaction to disputants in terms of cost, time and maintenance and sustainability of relationship. The study gathered information from both primary and secondary sources. Data from primary sources were collected from fifty seven construction and legal practitioners in the public and contracting organisations with the use of questionnaires. The sampling technique that was employed was stratified simple random sampling and data was analysed with the use of SPSS. The study found Lack of awareness of ADR as one of the factors that militate against the use of ADR. The ADR techniques which give satisfaction to disputants in terms of cost, time and maintenance and sustainability of relationship are adjudication and negotiation respectively. The study recommends that awareness of ADR techniques in resolving construction dispute should be increased in order to maximize the full benefit of the use of ADR in construction projects.

  4. The S-curve for forecasting waste generation in construction projects.

    Science.gov (United States)

    Lu, Weisheng; Peng, Yi; Chen, Xi; Skitmore, Martin; Zhang, Xiaoling

    2016-10-01

    Forecasting construction waste generation is the yardstick of any effort by policy-makers, researchers, practitioners and the like to manage construction and demolition (C&D) waste. This paper develops and tests an S-curve model to indicate accumulative waste generation as a project progresses. Using 37,148 disposal records generated from 138 building projects in Hong Kong in four consecutive years from January 2011 to June 2015, a wide range of potential S-curve models are examined, and as a result, the formula that best fits the historical data set is found. The S-curve model is then further linked to project characteristics using artificial neural networks (ANNs) so that it can be used to forecast waste generation in future construction projects. It was found that, among the S-curve models, cumulative logistic distribution is the best formula to fit the historical data. Meanwhile, contract sum, location, public-private nature, and duration can be used to forecast construction waste generation. The study provides contractors with not only an S-curve model to forecast overall waste generation before a project commences, but also with a detailed baseline to benchmark and manage waste during the course of construction. The major contribution of this paper is to the body of knowledge in the field of construction waste generation forecasting. By examining it with an S-curve model, the study elevates construction waste management to a level equivalent to project cost management where the model has already been readily accepted as a standard tool.

  5. Pipelines from the north : a U.S. perspective

    Energy Technology Data Exchange (ETDEWEB)

    Slutz, J. [United States Dept. of Energy, Washington, DC (United States)

    2003-07-01

    The United States will continue to look to Canada and Alaska for a significant part of its natural gas supply in an effort to meet its growing demand for energy. The United States depends on Canadian gas as a reliable and secure supply of energy, and is therefore examining natural gas markets and the wide range of supply opportunities. This presentation highlighted changes in cross border natural gas trade in North America and noted that 94 per cent of natural gas going to the United States from Canada is shipped via pipeline. On the liquefied natural gas (LNG) front, U.S. exports to Mexico now exceed imports, but import volumes from Trinidad and Nigeria are increasing as expected. Total import volumes in 2001 surpassed the previous year. A look at the infrastructure of LNG in the United States was also presented along with the advantages and limitations of each option. Cost comparisons were also presented. It was noted that any import or LNG project would result in unique economics. LNG projects are now cheaper because of better engineering, economies of scale and better pipeline economics. The U.S. National Energy Policy recommends that the pipeline to bring Alaskan gas to U.S. markets should be constructed as soon as possible. It was emphasized that any project to ship natural gas from Alaska to the lower 48 will need to work closely with Canada in order to be successful. 15 figs.

  6. Effectiveness of Project Teams and their Impact on the Performance of Saudi Construction Projects

    OpenAIRE

    Sadi Assaf; Mohammad A. Hassanain; Hafiz Mughal

    2014-01-01

    The objective of this study is to determine the nature and strength of relationship between the different elements of teamwork effectiveness and overall project success. Literature has been reviewed on constituents of effective teamwork and indicators for project success to determine the relationship. Two questionnaires were used to determine the nature and strength of the relationship between components of effective teamwork and overall project success. Data on the questionnaires were gather...

  7. Management of investment-construction projects basing on the matrix of key events

    Directory of Open Access Journals (Sweden)

    Morozenko Andrey Aleksandrovich

    2016-11-01

    Full Text Available The article considers the current problematic issues in the management of investment-construction projects, examines the questions of efficiency increase of construction operations on the basis of the formation of a reflex-adaptive organizational structure. The authors analyzed the necessity of forming a matrix of key events in the investment-construction project (ICP, which will create the optimal structure of the project, basing on the work program for its implementation. For convenience of representing programs of the project implementation in time the authors make recommendations to consolidate the works into separate, economically independent functional blocks. It is proposed to use an algorithm of forming the matrix of an investment-construction project, considering the economic independence of the functional blocks and stages of the ICP implementation. The use of extended network model is justified, which is supplemented by organizational and structural constraints at different stages of the project, highlighting key events fundamentally influencing the further course of the ICP implementation.

  8. Underground pipeline corrosion

    CERN Document Server

    Orazem, Mark

    2014-01-01

    Underground pipelines transporting liquid petroleum products and natural gas are critical components of civil infrastructure, making corrosion prevention an essential part of asset-protection strategy. Underground Pipeline Corrosion provides a basic understanding of the problems associated with corrosion detection and mitigation, and of the state of the art in corrosion prevention. The topics covered in part one include: basic principles for corrosion in underground pipelines, AC-induced corrosion of underground pipelines, significance of corrosion in onshore oil and gas pipelines, n

  9. REVIEW OF INTERNATIONAL PROJECTS IN А FIELD OF HUMAN MICROBIAL ECOLOGY AND CONSTRUCTION OF PROBIOTICS

    Directory of Open Access Journals (Sweden)

    S. A. Starovoitova

    2013-06-01

    Full Text Available Modern huge and world-wide known projects concerning studying of human microbial ecology and construction of probiotics, particularly: Society for Microbial Ecology and Disease, Probiotics & Health Targeted Initiative of International Science and Technology Center (TI PROBIO ISTC, Human Microbiome Project of National Institutes of Health, MetaHIT Project (Metagenomics of the Human Intestinal Tract of European Commission, Human Metabolome Project of Canadian University of Alberta and some more else were characterized in the article. Brief historical information and reference to official sites of every discussed project were given. Main goals and tasks of every project were described. Short characteristic of discussed projects and also modern accessible results of researches were given. Importance of every examined project for widening scientific knowledge in the field of human microbial ecology and also for improvement and/or for construction of modern effective probiotics on basis of human normal intestinal microflora were paid attention. Close interaction of scientific data received by realization of every discussed project was shown.

  10. Pipelined CPU Design with FPGA in Teaching Computer Architecture

    Science.gov (United States)

    Lee, Jong Hyuk; Lee, Seung Eun; Yu, Heon Chang; Suh, Taeweon

    2012-01-01

    This paper presents a pipelined CPU design project with a field programmable gate array (FPGA) system in a computer architecture course. The class project is a five-stage pipelined 32-bit MIPS design with experiments on the Altera DE2 board. For proper scheduling, milestones were set every one or two weeks to help students complete the project on…

  11. Pipelined CPU Design with FPGA in Teaching Computer Architecture

    Science.gov (United States)

    Lee, Jong Hyuk; Lee, Seung Eun; Yu, Heon Chang; Suh, Taeweon

    2012-01-01

    This paper presents a pipelined CPU design project with a field programmable gate array (FPGA) system in a computer architecture course. The class project is a five-stage pipelined 32-bit MIPS design with experiments on the Altera DE2 board. For proper scheduling, milestones were set every one or two weeks to help students complete the project on…

  12. Local scour at submarine pipelines

    Institute of Scientific and Technical Information of China (English)

    Yee-Meng Chiew

    2010-01-01

    The rapid development of offshore oil_fields has increased the number of submarine pipelines being constructed for the transport of crude oil to onshore refineries.Interactions between the pipeline and an erodible bed under the influence of current and waves often lead to local scouring around the structure.When this occurs, the pipeline may be suspended on the seabed resulting in the formation of a span.If the free span is long enough, the pipe may experience resonant flow-induced oscillations,leading to structural failure.This study examines the complex flow-structure-sediment interaction leading to the development of local scour holes around submarine pipelines.It reviews published literature in this area,which primarily is confined to the development of 2-dimensional scour holes.Despite the abundance of such research studies,pipeline-scour in the field essentially is 3-dimensional in nature.Hence, most of these studies have overlooked the importance of the transverse dimension of the scour hole,while emphasizing on its vertical dimension.This dearly is an issue that must be re-examined in light of the potential hazard and environmental disaster that one faces in the event of a pipeline failure.Recent studies have begun to recognize this shortcoming,and attempts have been made to overcome the deficiency.The study presents the state-of-the-art knowledge on local scour at submarine pipelines,both from a 2-dimensional as well as the 3-dimensional perspective.

  13. Road maintaining and constructing machine training center project in Morocco; Morocco doro hoshu kensetsu kiki kunren center project

    Energy Technology Data Exchange (ETDEWEB)

    Hagiwara, T. [Japan Sewage Works Agency, Tokyo (Japan)

    1997-10-25

    This paper describes technical cooperation with Morocco on road maintenance. In the latter half of the 1980`s, road transportation accounted for 95% of traveler transportation and 80% of freight transportation. Thereafter, construction of new roads has been reduced due to financial situation, and maintenance of the existing roads has become the core of road project of the government. The government has requested Japan in 1986 a gratuitous fund cooperation required for building a training facility for road maintenance, and technical cooperation for implementing the training courses. The Japan International Cooperation Agency has built the Morocco road maintaining and constructing machine training center under a gratuitous fund cooperation of about 1.6 billion yen, and provided construction machines, and other machines and appliances. The center inauguration ceremony was held in July 1993. The Japanese side has provided implements and materials, sent professional persons, and accepted trainees. The Moroccan side has taken burden of land development, construction of staff boarding houses and locative structures, and other local costs. The center holds 35 official staff members. The training courses cover operation, servicing, management of machines, and road maintenance, and have a total of 719 persons completed the courses. The five-year project has been completed, and the subsequent project is now being performed by the Moroccan side alone. 5 figs., 4 tabs.

  14. Research on Reliability and Cost Integrated Optimization Algorithm of Construction Project Logistics System

    Directory of Open Access Journals (Sweden)

    Xiaoping Bai

    2013-01-01

    Full Text Available The structure of the construction project logistics system is decomposed in detail; some uncertain factors affecting system reliability are analyzed. This paper applies the probability-influence coordinate graph to screen out the logistics subsystem that has great influence on system reliability under the conditions of occurring failure, and establishes an allocation model of the reliability index in construction project logistics system based on the restriction of cost, makes use of the presented model and algorithm to calculate the cost-based reliability, contrasts it with the index reliability assigned by the scoring method to the optimal distribution value of reliability index and the optimal cost. The presented detailed methods and steps can offer the meaningful reference for reliability optimization management of the logistics system in the construction project.

  15. A Decision Support System for Construction Projects Based on Standardized Exchanged Documents

    Institute of Scientific and Technical Information of China (English)

    MA Zhiliang; LU Ning; GU Weihua

    2008-01-01

    Large amounts of documents are exchanged during the construction phase of projects, which covers the important management information. To utilize the exchanged documents to support decision-making of the management staffs, the requirement analysis was carried out based on the interviews to the practitioners. A decision support system called Explyzer+ was developed based on the previous prototype system Explyzer. The latter was enhanced by adding the functions to automate the whole process and the techniques of data mining including decision tree analysis and clustering analysis. A case study for in-depth information analysis was conducted based on the data obtained from a large construction project to demon-strate its feasibility and effectiveness. The system could effectively assist the management staffs to carry out in-depth information analysis for decision-making in construction projects.

  16. A Novel Evaluation Method for Building Construction Project Based on Integrated Information Entropy with Reliability Theory

    Science.gov (United States)

    Bai, Xiao-ping; Zhang, Xi-wei

    2013-01-01

    Selecting construction schemes of the building engineering project is a complex multiobjective optimization decision process, in which many indexes need to be selected to find the optimum scheme. Aiming at this problem, this paper selects cost, progress, quality, and safety as the four first-order evaluation indexes, uses the quantitative method for the cost index, uses integrated qualitative and quantitative methodologies for progress, quality, and safety indexes, and integrates engineering economics, reliability theories, and information entropy theory to present a new evaluation method for building construction project. Combined with a practical case, this paper also presents detailed computing processes and steps, including selecting all order indexes, establishing the index matrix, computing score values of all order indexes, computing the synthesis score, sorting all selected schemes, and making analysis and decision. Presented method can offer valuable references for risk computing of building construction projects. PMID:23533352

  17. Causes and Effects of Change Orders on Construction Projects in Kuwait

    Directory of Open Access Journals (Sweden)

    Alia Alaryan

    2014-07-01

    Full Text Available This research investigates the change orders in public and private construction projects in Kuwait. The study in this research presents the results of a questionnaire surveying the owners, contractors and consultants on a sample comprising 385 engineers representing the construction industry. The responses to the questionnaire help in identifying the general characteristics of the construction industry in Kuwait as well as ranking the most common causes of changes, their effects on the projects and the control measures to address the changes. The results of the questionnaire indicate that the owner is the most responsible party causing changes. The study identifies that the first cause is change of plans by owner, otherwise increase in cost of the project is the first effect. All changes to design documents are checked and reviewed is the first control.

  18. 42 CFR 137.367 - May the Secretary issue a stop work order under a construction project agreement?

    Science.gov (United States)

    2010-10-01

    ...-GOVERNANCE Construction Roles of the Secretary in Establishing and Implementing Construction Project..., the Secretary has no role in the day-to-day management of a construction project. ... 42 Public Health 1 2010-10-01 2010-10-01 false May the Secretary issue a stop work order under a...

  19. 77 FR 70543 - Pipeline Safety: Meeting of the Gas Pipeline Advisory Committee and the Liquid Pipeline Advisory...

    Science.gov (United States)

    2012-11-26

    ... for natural gas pipelines and for hazardous liquid pipelines. Both committees were established under... TRANSPORTATION Pipeline and Hazardous Materials Safety Administration Pipeline Safety: Meeting of the Gas Pipeline Advisory Committee and the Liquid Pipeline Advisory Committee AGENCY: Pipeline and...

  20. Pipeline rules of thumb handbook a manual of quick, accurate solutions to everyday pipeline engineering problems

    CERN Document Server

    McAllister, EW

    2014-01-01

    Presented in easy-to-use, step-by-step order, Pipeline Rules of Thumb Handbook is a quick reference for day-to-day pipeline operations. For more than 35 years, the Pipeline Rules of Thumb Handbook has served as the ""go-to"" reference for solving even the most day-to-day vexing pipeline workflow problems. Now in its 8th edition, this handbook continues to set the standard by which all other piping books are judged. Along with over 30% new or updated material regarding codes, construction processes, and equipment, this book continues to offer hundreds of ""how-to"" methods and ha