Enersave API: Android-based power-saving framework for mobile devices

Directory of Open Access Journals (Sweden)

A.M. Muharum

2017-06-01

Full Text Available Power consumption is a major factor to be taken into consideration when using mobile devices in the IoT field. Good Power management requires proper understanding of the way in which it is being consumed by the end-devices. This paper is a continuation of the work in Ref. [1] and proposes an energy saving API for the Android Operating System in order to help developers turn their applications into energy-aware ones. The main features heavily used for building smart applications, greatly impact battery life of Android devices and which have been taken into consideration are: Screen brightness, Colour scheme, CPU frequency, 2G/3G network, Maps, Low power localisation, Bluetooth and Wi-Fi. The assessment of the power-saving API has been performed on real Android devices and also compared to the most powerful power-saving applications – DU Battery Saver and Battery Saver 2016 – currently available on the Android market. Comparisons demonstrate that the Enersave API has a significant impact on power saving when incorporated in android applications. While DU Battery Saver and Battery Saver 2016 help saving 22.2% and 40.5% of the battery power respectively, the incorporation of the Enersave API in android applications can help save 84.6% of battery power.

LightSavers : accelerating advanced outdoor lighting

Energy Technology Data Exchange (ETDEWEB)

Purcell, B.; Pickering, M.

2010-01-15

This paper provided an update to the Toronto Atmospheric Fund (TAF) LightSavers program. The program was designed to accelerate market transformation for light emitting diode (LED) and advanced lighting management systems in outdoor lighting applications. It is expected that the program will result in significant electricity savings and emissions reductions within the Greater Toronto Area (GTA) and other Ontario municipalities. The first phase of the program established advanced outdoor lighting pilot programs in parking lots, garages, and pathway lighting applications that were guided by a common monitoring protocol to ensure useful and reliable assessment of the pilot programs. The TAF has since developed a strategy to strengthen public understanding and support for the use of advanced lighting, and continues to address policy issues that may impact the future of LED lighting programs. The TAF has also activated an electronic newsletter, delivered public workshops, and has been represented at several conferences. A working partnership has been established with Toronto Hydro Energy Services. Five pilot sites have been installed and have begun to provide monitoring data. Details of the pilot programs were provided. 16 figs.

Documentation of Calculation Methodology, Input data, and Infrastructure for the Home Energy Saver Web Site

Energy Technology Data Exchange (ETDEWEB)

Pinckard, Margaret J.; Brown, Richard E.; Mills, Evan; Lutz, James D.; Moezzi, Mithra M.; Atkinson, Celina; Bolduc, Chris; Homan, Gregory K.; Coughlin, Katie

2005-07-13

The Home Energy Saver (HES, http://HomeEnergySaver.lbl.gov) is an interactive web site designed to help residential consumers make decisions about energy use in their homes. This report describes the underlying methods and data for estimating energy consumption. Using engineering models, the site estimates energy consumption for six major categories (end uses); heating, cooling, water heating, major appliances, lighting, and miscellaneous equipment. The approach taken by the Home Energy Saver is to provide users with initial results based on a minimum of user input, allowing progressively greater control in specifying the characteristics of the house and energy consuming appliances. Outputs include energy consumption (by fuel and end use), energy-related emissions (carbon dioxide), energy bills (total and by fuel and end use), and energy saving recommendations. Real-world electricity tariffs are used for many locations, making the bill estimates even more accurate. Where information about the house is not available from the user, default values are used based on end-use surveys and engineering studies. An extensive body of qualitative decision-support information augments the analytical results.

Commercial Building Energy Saver: An energy retrofit analysis toolkit

International Nuclear Information System (INIS)

Hong, Tianzhen; Piette, Mary Ann; Chen, Yixing; Lee, Sang Hoon; Taylor-Lange, Sarah C.; Zhang, Rongpeng; Sun, Kaiyu; Price, Phillip

2015-01-01

Highlights: • Commercial Building Energy Saver is a powerful toolkit for energy retrofit analysis. • CBES provides benchmarking, load shape analysis, and model-based retrofit assessment. • CBES covers 7 building types, 6 vintages, 16 climates, and 100 energy measures. • CBES includes a web app, API, and a database of energy efficiency performance. • CBES API can be extended and integrated with third party energy software tools. - Abstract: Small commercial buildings in the United States consume 47% of the total primary energy of the buildings sector. Retrofitting small and medium commercial buildings poses a huge challenge for owners because they usually lack the expertise and resources to identify and evaluate cost-effective energy retrofit strategies. This paper presents the Commercial Building Energy Saver (CBES), an energy retrofit analysis toolkit, which calculates the energy use of a building, identifies and evaluates retrofit measures in terms of energy savings, energy cost savings and payback. The CBES Toolkit includes a web app (APP) for end users and the CBES Application Programming Interface (API) for integrating CBES with other energy software tools. The toolkit provides a rich set of features including: (1) Energy Benchmarking providing an Energy Star score, (2) Load Shape Analysis to identify potential building operation improvements, (3) Preliminary Retrofit Analysis which uses a custom developed pre-simulated database and, (4) Detailed Retrofit Analysis which utilizes real-time EnergyPlus simulations. CBES includes 100 configurable energy conservation measures (ECMs) that encompass IAQ, technical performance and cost data, for assessing 7 different prototype buildings in 16 climate zones in California and 6 vintages. A case study of a small office building demonstrates the use of the toolkit for retrofit analysis. The development of CBES provides a new contribution to the field by providing a straightforward and uncomplicated decision

Report on the production magnet measurement system for the Fermilab Energy-Saver superconducting dipoles and quadrupoles

International Nuclear Information System (INIS)

Brown, B.C.; Cooper, W.E.; Garvey, J.D.

1983-03-01

The measurement system and procedures used to test more than 900 superconducting dipole magnets and more than 275 superconducting quadrupole magnets for the Fermilab Energy Saver are described. The system is designed to measure nearly all parameters relevant to the use of the magnets in the accelerator including maximum field capability and precision field measurements. The performance of the instrumentation with regard to precision, reliability, and operational needs for high volume testing will be described. Previous reports have described the measurement system used during development of the Saver magnets from which this system has evolved

Efficiency and Cost Analysis of Cell Saver Auto Transfusion System in Total Knee Arthroplasty

Directory of Open Access Journals (Sweden)

Mustafa Gökhan Bilgili

2014-06-01

Full Text Available Background: Blood loss and replacement is still a controversial issue in major orthopaedic surgery. Allogenic blood transfusion may cause legal problems and concerns regarding the transmission of transfusion-related diseases. Cellsaver Systems (CSS were developed as an alternative to allogenic transfusion but CSS transfusion may cause coagulation, infection and haemodynamic instability. Aims: Our aim was to analyse the efficiency and cost analysis of a cell saver auto-transfusion system in the total knee arthroplasty procedure. Study Design: Retrospective comparative study. Methods: Those patients who were operated on by unilateral, cemented total knee arthroplasty (TKA were retrospectively evaluated. Group 1 included 37 patients who were treated using the cell saver system, and Group 2 involved 39 patients who were treated by allogenic blood transfusion. The groups were compared in terms of preoperative haemoglobin and haematocrit levels, blood loss and transfusion amount, whether allogenic transfusion was made, degree of deformity, body mass index and cost. Results: No significant results could be obtained in the statistical comparisons made in terms of the demographic properties, deformity properties, preoperative laboratory values, transfusion amount and length of hospital stay of the groups. Average blood loss was calculated to be less in Group 1 (p<0.05 and cost was higher in Group 1 (p<0.05. Conclusion: Cell saver systems do not decrease the amount of allogenic blood transfusion and costs more. Therefore, the routine usage of the auto-transfusion systems is a controversial issue. Cell saver system usage does not affect allogenic blood transfusion incidence or allogenic blood transfusion volume. It was found that preoperative haemoglobin and body mass index rates may affect allogenic blood transfusion. Therefore, it is foreseen that auto-transfusion systems could be useful in patients with low haemoglobin level and body mass index.

A liquid helium saver

International Nuclear Information System (INIS)

Avenel, O.; Der Nigohossian, G.; Roubeau, P.

1976-01-01

A cryostat equipped with a 'liquid helium saver' is described. A mass flow rate M of helium gas at high pressure is injected in a counter-flow heat exchanger extending from room to liquid helium temperature. After isenthalpic expansion through a calibrated flow impedance this helium gas returns via the low pressure side of the heat exchanger. The helium boil-off of the cryostat represents a mass flow rate m, which provides additional precooling of the incoming helium gas. Two operating regimes appear possible giving nearly the same efficiency: (1) high pressure (20 to 25 atm) and minimum flow (M . L/W approximately = 1.5) which would be used in an open circuit with helium taken from a high pressure cylinder; and (2) low pressure (approximately = 3 atm), high flow (M . L/W > 10) which would be used in a closed circuit with a rubber diaphragm pumping-compressing unit; both provide a minimum theoretical boil-off factor of about 8%. Experimental results are reported. (U.K.)

Is there any difference between Back Saver Sit-Reach Test and Modified Back Saver Sit-Reach Test in estimating hamstring flexibility among the primary school children?

Directory of Open Access Journals (Sweden)

Bhoomita Gadhiya

2014-01-01

Full Text Available Background: Modified back saver sit-and-reach test (MBSSRT has more advantages over Back saver sit-and-reach test (BSSRT in measuring hamstring flexibility among middle school children and adolescents. However, whether MBSSRT can be used instead of the other among the primary school going children is not yet clear. Objective : To estimate the association between BSSRT and MBSSRT for measuring hamstring flexibility. Procedure : One hundred and forty-one healthy children (5-12 years were selected from the primary school identified by the cluster sampling method for this cross-sectional study. The subjects were asked to perform three trials of BSSRT and MBSSRT (both leg in randomized order. Average was used for data analysis. The association between the two tests was established by Spearman Rank Correlation test. Results: The correlation between BSSRT and MBSSRT for right lower limb ranged from 0.43 to 0.77 with mean correlation of ρ = 0.66 (P < 0.01 and for left lower limb ranged from 0.46 to 0.78 with mean correlation of ρ = 0.68 (P < 0.01. Conclusion: MBSSRT can be used alternatively instead of BSSRT to measure hamstring flexibility among the primary school children.

Are atomic power plants saver than nuclear power plants

International Nuclear Information System (INIS)

Roeglin, H.C.

1977-01-01

It is rather impossible to establish nuclear power plants against the resistance of the population. To prevail over this resistance, a clarification of the citizens-initiatives motives which led to it will be necessary. This is to say: It is quite impossible for our population to understand what really heappens in nuclear power plants. They cannot identify themselves with nuclear power plants and thus feel very uncomfortable. As the total population feels the same way it is prepared for solidarity with the citizens-initiatives even if they believe in the necessity of nuclear power plants. Only an information-policy making transparent the social-psychological reasons of the population for being against nuclear power plants could be able to prevail over the resistance. More information about the technical procedures is not sufficient at all. (orig.) [de

Saver.net lidar network in southern South America

Science.gov (United States)

Ristori, Pablo; Otero, Lidia; Jin, Yoshitaka; Barja, Boris; Shimizu, Atsushi; Barbero, Albane; Salvador, Jacobo; Bali, Juan Lucas; Herrera, Milagros; Etala, Paula; Acquesta, Alejandro; Quel, Eduardo; Sugimoto, Nobuo; Mizuno, Akira

2018-04-01

The South American Environmental Risk Management Network (SAVER-Net) is an instrumentation network, mainly composed by lidars, to provide real-time information for atmospheric hazards and risk management purposes in South America. This lidar network have been developed since 2012 and all its sampling points are expected to be fully implemented by 2017. This paper describes the network's status and configuration, the data acquisition and processing scheme (protocols and data levels), as well as some aspects of the scientific networking in Latin American Lidar Network (LALINET). Similarly, the paper lays out future plans on the operation and integration to major international collaborative efforts.

Simulation of the Energy Saver refrigeration system

International Nuclear Information System (INIS)

Barton, H.R. Jr.; Nicholls, J.E.; Mulholland, G.T.

1981-10-01

The helium refrigeration for the Energy Saver is supplied by a Central Helium Liquefier and 24 Satellite Refrigerators installed over a 1-1/4 square mile area. An interactive, software simulator has been developed to calculate the refrigeration available from the cryogenic system over a wide range of operating conditions. The refrigeration system simulator incorporates models of the components which have been developed to quantitatively describe changes in system performance. The simulator output is presented in a real-time display which has been used to search for the optimal operating conditions of the Satellite-Central system, to examine the effect of an extended range of operating parameters and to identify equipment modifications which would improve the system performance

Energy Saver: Tips on Saving Energy and Money in Your Home

Energy Technology Data Exchange (ETDEWEB)

Casey, Allison L [National Renewable Energy Laboratory (NREL), Golden, CO (United States)

2017-10-04

This guide shows you how easy it is to reduce your energy use at home and on the road. You'll find quick tips you can use to start saving today, as well as information on larger projects that will help save you money over the long term. Find even more information about saving money and energy at home by visiting our website, EnergySaver.gov.

Efficiency and cost analysis of cell saver auto transfusion system in total knee arthroplasty.

Science.gov (United States)

Bilgili, Mustafa Gökhan; Erçin, Ersin; Peker, Gökhan; Kural, Cemal; Başaran, Serdar Hakan; Duramaz, Altuğ; Avkan, Cevdet

2014-06-01

Blood loss and replacement is still a controversial issue in major orthopaedic surgery. Allogenic blood transfusion may cause legal problems and concerns regarding the transmission of transfusion-related diseases. Cellsaver Systems (CSS) were developed as an alternative to allogenic transfusion but CSS transfusion may cause coagulation, infection and haemodynamic instability. Our aim was to analyse the efficiency and cost analysis of a cell saver auto-transfusion system in the total knee arthroplasty procedure. Retrospective comparative study. Those patients who were operated on by unilateral, cemented total knee arthroplasty (TKA) were retrospectively evaluated. Group 1 included 37 patients who were treated using the cell saver system, and Group 2 involved 39 patients who were treated by allogenic blood transfusion. The groups were compared in terms of preoperative haemoglobin and haematocrit levels, blood loss and transfusion amount, whether allogenic transfusion was made, degree of deformity, body mass index and cost. No significant results could be obtained in the statistical comparisons made in terms of the demographic properties, deformity properties, preoperative laboratory values, transfusion amount and length of hospital stay of the groups. Average blood loss was calculated to be less in Group 1 (pblood transfusion and costs more. Therefore, the routine usage of the auto-transfusion systems is a controversial issue. Cell saver system usage does not affect allogenic blood transfusion incidence or allogenic blood transfusion volume. It was found that preoperative haemoglobin and body mass index rates may affect allogenic blood transfusion. Therefore, it is foreseen that auto-transfusion systems could be useful in patients with low haemoglobin level and body mass index.

Saver.net lidar network in southern South America

Directory of Open Access Journals (Sweden)

Ristori Pablo

2018-01-01

Full Text Available The South American Environmental Risk Management Network (SAVER-Net is an instrumentation network, mainly composed by lidars, to provide real-time information for atmospheric hazards and risk management purposes in South America. This lidar network have been developed since 2012 and all its sampling points are expected to be fully implemented by 2017. This paper describes the network’s status and configuration, the data acquisition and processing scheme (protocols and data levels, as well as some aspects of the scientific networking in Latin American Lidar Network (LALINET. Similarly, the paper lays out future plans on the operation and integration to major international collaborative efforts.

Wind power plants the fuel savers

International Nuclear Information System (INIS)

Akbar, M.

2006-01-01

Wind is a converted from of solar energy. The Sun's radiation heats different parts of the earth at variable rates as the earth surfaces absorb or reflect at different rates. This in turn causes portions of the atmosphere to warm at varying levels. The hot air rises reducing atmospheric pressure at the earth's surface beneath, the cooler air rushes to replace it and in the process creates a momentum called wind. Air possesses mass and when it sets into motion, it contains the energy of that motion, called the Kinetic Energy. A part of the Kinetic Energy of the wind can be converted into other forms of energy i.e. mechanical force or electric power that can be used to perform work. The cost of electric energy from the wind system has dropped from the initial cost of 30 to 40 Cents per kWh to about 5 to 7 Cents/k Wh during the past 20 years. The costs are continually declining as the technology is advanced, the unit size is increased and larger plants are built. Wind power is now a viable, robust and fast growing industry. The cost of wind energy is expected to drop to 2 to 3 Cents / kWh during the next 5 to 10 years. Due to sky-rocketing prices of the fossil fuels, the competitive position of power generation technologies is rapidly changing. Wind energy is likely to emerge as the cheapest source of electric power generation in the global market in the near future. The current assessment of the global wind resources indicate that the wind energy potential is more than double the world's electricity needs. (author)

Vancomycin added to the wash solution of the cell-saver. Effect on bacterial contamination.

Science.gov (United States)

Perez-Ferrer, A; Gredilla-Díaz, E; de Vicente-Sánchez, J; Navarro-Suay, R; Gilsanz-Rodríguez, F

2017-04-01

The aim of this study is to test whether the addition of a low-dose of antibiotic (vancomycin) to the wash solution (saline) of the cell-saver reduces the incidence of bacterial contamination of the autologous red blood cell (RBCs) concentrate recovered. Experimental, randomized, double-blind, parallel group study performed on 20 consecutive patients scheduled for posterior spinal fusion surgery. Intraoperative bleeding was processed through a cell-saver: HaemoLite ® 2+, in which the RBCs were washed according to randomization group, with saline (control group) or saline+10μg/ml -1 vancomycin (vanco group). Data regarding age, weight, processed and recovered volume, blood count, blood culture, and vancomycin concentration in RBCs concentrates obtained and incidence of fever after reinfusion were collected. Processed volume was 843±403ml and recovered volume 121±29ml, with haemoglobin concentration 10.4±5.0g/dl -1 and haematocrit 29.1±15.9% (mean±SD). Recovered RBC concentrate cultures were positive for coagulase-negative Staphylococcus in 5 cases (50%) of the control group while all cultures were negative in the vanco group (P=.016). The difference between the theoretical concentration of vancomycin administered and the concentration determined in the recovered RBC concentrate was 1.31μg/ml -1 (95% CI 1.19 to 1.43; P=.074). The addition of vancomycin at a concentration of 10ug/ml -1 to the wash solution of the cell-saver achieved similar concentrations in the autologous blood concentrate recovered allowing for bacterial removal, with negative blood cultures in all cases. Copyright © 2016 Sociedad Española de Anestesiología, Reanimación y Terapéutica del Dolor. Publicado por Elsevier España, S.L.U. All rights reserved.

Energy saver A-sector power test results

International Nuclear Information System (INIS)

Martin, P.; Flora, R.; Tool, G.; Wolff, D.

1982-01-01

The superconducting magnets and associated cryogenic components in A-sector represent the initial phase of installation of the Fermilab superconducting accelerator, designed to accelerate proton beams to energies of 1 TeV. Installation of the magnets, comprising one-eighth of the ring, was completed in December, 1981. Cooldown and power tests took place in the first half of 1982, concurrent with main ring use for 400 GeV high energy physics. The tests described in this paper involved 151 cryogenic components in the tunnel: 94 dipoles, 24 quadrupoles, 25 spool pieces, 3 feed cans, 4 turn-around boxes and 1 bypass. Refrigeration was supplied by three satellite refrigerators, the Central Helium Liquefier, and two compressor buildings. The magnets were powered by a single power supply

Efficiency and Cost Analysis of Cell Saver Auto Transfusion System in Total Knee Arthroplasty

OpenAIRE

Mustafa Gökhan Bilgili; Ersin Erçin; Cemal Kural; Altuğ Duramaz; Cevdet Avkan; Gökhan Peker; Serdar Hakan Başaran

2014-01-01

Background: Blood loss and replacement is still a controversial issue in major orthopaedic surgery. Allogenic blood transfusion may cause legal problems and concerns regarding the transmission of transfusion-related diseases. Cellsaver Systems (CSS) were developed as an alternative to allogenic transfusion but CSS transfusion may cause coagulation, infection and haemodynamic instability. Aims: Our aim was to analyse the efficiency and cost analysis of a cell saver auto-transfusion system ...

Status of the Fermilab Energy Doubler/Saver project

Energy Technology Data Exchange (ETDEWEB)

1977-01-01

The possibility of building a ring of superconducting magnets was considered very early in the design of the Fermilab main accelerator. It was concluded that the technology of superconducting magnets was not at that time, sufficiently advanced. Therefore, the main ring was designed and built with conventional magnets. However, space was left in the main-ring tunnel for a future ring of superconducting magnets. The Energy Doubler/Saver (ED/S) was initiated in 1972 as a project to build a ring of superconducting magnets with the objective of dramatically increasing the research potential of the Fermilab accelerators. This was to be accomplished at a moderate cost and in such a manner as to make possible a significant saving of electrical energy. A description is given of the evolution of this program as well as give a status report of the Ed/S research and development program.

Status of the Fermilab Energy Doubler/Saver project

International Nuclear Information System (INIS)

1977-01-01

The possibility of building a ring of superconducting magnets was considered very early in the design of the Fermilab main accelerator. It was concluded that the technology of superconducting magnets was not at that time, sufficiently advanced. Therefore, the main ring was designed and built with conventional magnets. However, space was left in the main-ring tunnel for a future ring of superconducting magnets. The Energy Doubler/Saver (ED/S) was initiated in 1972 as a project to build a ring of superconducting magnets with the objective of dramatically increasing the research potential of the Fermilab accelerators. This was to be accomplished at a moderate cost and in such a manner as to make possible a significant saving of electrical energy. A description is given of the evolution of this program as well as give a status report of the Ed/S research and development program

Wind power plant system services

DEFF Research Database (Denmark)

Basit, Abdul; Altin, Müfit

Traditionally, conventional power plants have the task to support the power system, by supplying power balancing services. These services are required by the power system operators in order to secure a safe and reliable operation of the power system. However, as in the future the wind power...... is going more and more to replace conventional power plants, the sources of conventional reserve available to the system will be reduced and fewer conventional plants will be available on-line to share the regulation burden. The reliable operation of highly wind power integrated power system might...... then beat risk unless the wind power plants (WPPs) are able to support and participate in power balancing services. The objective of this PhD project is to develop and analyse control strategies which can increase the WPPs capability to provide system services, such as active power balancing control...

Cryogenic system for production testing and measurement of Fermilab energy saver superconducting magnets

International Nuclear Information System (INIS)

Cooper, W.E.; Barger, R.K.; Bianchi, A.J.; Cooper, W.E.; Johnson, F.B.; McGuire, K.J.; Pinyan, K.D.; Wilson, F.R.

1983-01-01

The cryogenic system of the Fermilab Magnet Test Facility has been used to provide cooling for the testing of approximately 1200 Energy Saver superconducting magnets. The system provides liquid helium, liquid nitrogen, gas purification, and vacuum support for six magnet test stands. It provides for simultaneous high current testing of two superconducting magnets and nonhigh current cold testing of two additional magnets. The cryogenic system has been in operation for about 32000 hours. The 1200 magnets have taken slightly more than three years to test

Cryogenic system for production testing and measurement of Fermilab energy saver superconducting magnets

International Nuclear Information System (INIS)

Cooper, W.E.; Bianchi, A.J.; Barger, R.K.; Johnson, F.B.; McGuire, K.J.; Pinyan, K.D.; Wilson, F.R.

1983-03-01

The cryogenic system of the Fermilab Magnet Test Facility has been used to provide cooling for the testing of approximately 1200 Energy Saver superconducting magnets. The system provides liquid helium, liquid nitrogen, gas purification, and vacuum support for six magnet test stands. It provides for simultaneous high current testing of two superconducting magnets and non-high current cold testing of two additional magnets. The cryogenic system has been in operation for about 32000 hours. The 1200 magnets have taken slightly more than three years to test

Fibrin sealants or cell saver eliminate the need for autologous blood donation in anemic patients undergoing primary total knee arthroplasty.

Science.gov (United States)

Bou Monsef, Jad; Buckup, Johannes; Waldstein, Wenzel; Cornell, Charles; Boettner, Friedrich

2014-01-01

Reducing allogeneic blood transfusions remains a challenge in total knee arthroplasty. Patients with preoperative anemia have a particularly high risk for perioperative blood transfusions. 176 anemic patients (Hb < 13.5 g/dl) undergoing total knee replacement were prospectively evaluated to compare the effect of a perioperative cell saver (26 patients), intraoperative fibrin sealants (5 ml Evicel, Johnson & Johnson Wound Management, Ethicon, Somerville, NJ) (45 patients), preoperative autologous blood donation (PABD) (21 patients), the combination of fibrin sealants and preoperative autologous blood donation (44) and no intervention (40 patients) on perioperative blood loss and transfusion requirements. All protocols resulted in significant reduction of allogeneic blood transfusions. Transfusion rates were similar with the use of PABD (19%), Evicel (18%), and cell saver (19%), all significantly lower than the control group (38 %, p < 0.05). Combining Evicel with PABD resulted in significantly higher wastage of autologous units (p < 0.05) with no significant reduction in allogeneic transfusion rate (14%). The use of fibrin sealant resulted in a significant reduction of blood loss compared to the PABD group (603 vs. 810 ml, p < 0.005) as well as the control group (603 vs. 822 ml, p < 0.005). While PABD proved to be the most cost-effective treatment option in anemic patients, fibrin sealants and cell saver show similar reduction in allogeneic transfusion rates compared to controls. The combination of fibrin sealants and PABD is not cost-effective and increases the number of wasted units.

Power Service Shops

Data.gov (United States)

Federal Laboratory Consortium — TVA's Power Service Shops provides expert repair and maintenance of power system components and large industrial equipment. With world-class maintenance facilities...

Critique of accommodating central bank policies and the 'expropriation of the saver' - A review

OpenAIRE

Bindseil, Ulrich; Domnick, Clemens; Zeuner, Jörg

2015-01-01

In parts of the German media, with the support of a number of German economists, the ECB’s low nominal interest rate policy is criticised as unnecessary, ineffective and as expropriating the German saver. This paper provides a review of the relevant arguments. It is recalled that returns on savings are anchored to the real rate of return on capital. Good monetary policy tries to avoid being a source of disturbance in itself, and may be able to smooth the effects of temporary external shocks, ...

FLECH PowerMax Service Requirement Specification

DEFF Research Database (Denmark)

It is expected that in the future, ancillary services will be required at distribution level. This work describes how one of these ancillary services, the PowerMax service, must be spec ified within a market framework. The basis of this work is the Flexibility Clearing House (FLE CH) platform...... and the Distribution System Operator (DSO) services defined in [1]. The PowerMax service has been further discussed in [2], and this technical report seeks to clarify the implementation details first discussed in that paper. The aim of the PowerMax service it to relieve congestion issue s in the distribution system...... by establishing a maximum power that a cluster of consumer devices may draw from the syste m. The consumers will receive a payment for providing this service, and the DSO will be able to postpone grid reinfo rcement...

Basic-CPR and AIDS: are volunteer life-savers prepared for a storm?

Science.gov (United States)

Bierens, J J; Berden, H J

1996-10-01

Professional health care workers have access to guidelines, equipment and techniques to reduce the exposure to infectious material in case of resuscitation. The current official content of national courses for volunteer life-savers do not address this issue, as far as we know. Concern about the risks of infection due to resuscitation is increasing in this group. This article describes a rational approach of the problem, that includes data on the infection risk of basic-CPR, and an approach that accepts that the concern can not be controlled by objective data. In such an emotional approach, direct contact has to be minimised by using devices. Requirements for resuscitation devices with a barrier function are listed. Although both approaches will reduce the fear of infection, we advice a rational approach.

Ahorre Energía: Consejos para ahorro dinero y energía en su hogar (Spanish Brochure), Energy Saver Guide

Energy Technology Data Exchange (ETDEWEB)

None

2017-11-01

La versión en castellano de la guía del Departamento de Energía de los Estados Unidos que ayuda a consumidores a ahorrar energía y dinero en su hogar y en las carreteras. The Spanish-language version of U.S. Department of Energy's Energy Saver consumer guide to saving energy and money at home and on the road.

Ecosystem Services Flows: Why Stakeholders' Power Relationships Matter.

Science.gov (United States)

Felipe-Lucia, María R; Martín-López, Berta; Lavorel, Sandra; Berraquero-Díaz, Luis; Escalera-Reyes, Javier; Comín, Francisco A

2015-01-01

The ecosystem services framework has enabled the broader public to acknowledge the benefits nature provides to different stakeholders. However, not all stakeholders benefit equally from these services. Rather, power relationships are a key factor influencing the access of individuals or groups to ecosystem services. In this paper, we propose an adaptation of the "cascade" framework for ecosystem services to integrate the analysis of ecological interactions among ecosystem services and stakeholders' interactions, reflecting power relationships that mediate ecosystem services flows. We illustrate its application using the floodplain of the River Piedra (Spain) as a case study. First, we used structural equation modelling (SEM) to model the dependence relationships among ecosystem services. Second, we performed semi-structured interviews to identify formal power relationships among stakeholders. Third, we depicted ecosystem services according to stakeholders' ability to use, manage or impair ecosystem services in order to expose how power relationships mediate access to ecosystem services. Our results revealed that the strongest power was held by those stakeholders who managed (although did not use) those keystone ecosystem properties and services that determine the provision of other services (i.e., intermediate regulating and final services). In contrast, non-empowered stakeholders were only able to access the remaining non-excludable and non-rival ecosystem services (i.e., some of the cultural services, freshwater supply, water quality, and biological control). In addition, land stewardship, access rights, and governance appeared as critical factors determining the status of ecosystem services. Finally, we stress the need to analyse the role of stakeholders and their relationships to foster equal access to ecosystem services.

Impact of advanced wind power ancillary services on power system

DEFF Research Database (Denmark)

Hansen, Anca Daniela; Altin, Müfit

The objective of this report is to illustrate and analyse, by means of simulation test cases, the impact of wind power advanced ancillary services, like inertial response (IR), power oscillation damping (POD) and synchronising power (SP) on the power system. Generic models for wind turbine, wind...... power plant and power system are used in the investigation....

Services for nuclear power stations

International Nuclear Information System (INIS)

Fremann, M.; Ryckelynck

1987-01-01

This article gives an information as complete as possible about the activities of the french nuclear industry on the export-market. It describes the equipment and services available in the field of services for nuclear power stations [fr

Ecosystem Services Flows: Why Stakeholders’ Power Relationships Matter

Science.gov (United States)

Felipe-Lucia, María R.; Martín-López, Berta; Lavorel, Sandra; Berraquero-Díaz, Luis; Escalera-Reyes, Javier; Comín, Francisco A.

2015-01-01

The ecosystem services framework has enabled the broader public to acknowledge the benefits nature provides to different stakeholders. However, not all stakeholders benefit equally from these services. Rather, power relationships are a key factor influencing the access of individuals or groups to ecosystem services. In this paper, we propose an adaptation of the “cascade” framework for ecosystem services to integrate the analysis of ecological interactions among ecosystem services and stakeholders’ interactions, reflecting power relationships that mediate ecosystem services flows. We illustrate its application using the floodplain of the River Piedra (Spain) as a case study. First, we used structural equation modelling (SEM) to model the dependence relationships among ecosystem services. Second, we performed semi-structured interviews to identify formal power relationships among stakeholders. Third, we depicted ecosystem services according to stakeholders’ ability to use, manage or impair ecosystem services in order to expose how power relationships mediate access to ecosystem services. Our results revealed that the strongest power was held by those stakeholders who managed (although did not use) those keystone ecosystem properties and services that determine the provision of other services (i.e., intermediate regulating and final services). In contrast, non-empowered stakeholders were only able to access the remaining non-excludable and non-rival ecosystem services (i.e., some of the cultural services, freshwater supply, water quality, and biological control). In addition, land stewardship, access rights, and governance appeared as critical factors determining the status of ecosystem services. Finally, we stress the need to analyse the role of stakeholders and their relationships to foster equal access to ecosystem services. PMID:26201000

The rheologic properties of red blood cells processed by 2 different types of cell savers, and its effects on microcirculatory blood flow and tissue oxygenation in vivo.

NARCIS (Netherlands)

Scheeren, Thomas; de Lange, S.; Martinez, A.; Hagenaars, Johanna A. M.; Ben Ayad, N.; de Vries, Hans

2016-01-01

Introduction: Cell savers (CS) reduce the percentage of patients who need blood products during cardiac surgery. While some CS use discontinuous blood processing with a spinning bowl, others use continuous blood processing based on the elutriation principle. Both may influence aggregation and

1999 Annual report: compression + power + service

International Nuclear Information System (INIS)

2000-01-01

Enerflex manufactures, services and leases compression systems for the production and processing of natural gas and gas-fueled power generation systems. Design, engineering, project management, financing, installation commissioning and after-sales service are also part of Enerflex's arsenal of tools to ensure innovation, and high standards of quality and service. In 1999, Enerflex suffered an 18 per cent decline in revenues from $315 million in 1998 to $257 million in 1999, entirely due to lower sales of big ticket compression equipment in Canada. At the same time, revenues from international sales and service increased to $ 61.8 million in 1999, from $ 53 million in 1998. The company successfully completed the move to a new 328,000 sq. ft state-of-the-art manufacturing facility, and made its first significant sale to the United States in 1999 in the form of delivering a coal bed methane project in the Powder River area of Wyoming, and power generation equipment to Massachusetts. Although in the short term unusually warm average temperatures, industry cash flows, and access to capital may determine demand for the company's products and services, the long-term fundamentals are positive and demand for compression equipment and power generation systems is likely to grow. Indeed, in the fourth quarter of 1999, market conditions improved significantly and the company recorded its highest quarterly revenues and earnings during the last quarter. The annual review provides further details about the operations of the company's various divisions, (Compression and Power Systems, Parts and Compression Services, Leasing and Financing), management's review of the company's overall operations and finances, audited financial statements, and shareholders' information

Power system studies of new ancillary services

DEFF Research Database (Denmark)

Hansen, Anca Daniela; Altin, Müfit

The objective of this report is to illustrate and analyse, by means of simulation test cases, the impact of wind power advanced ancillary services, like inertial response (IR), power oscillation damping (POD) and synchronising power (SP) on the power system. Generic models for wind turbine, wind...... power plant and power system are used in the investigation....

Integrated services and maintenance in nuclear power plants

International Nuclear Information System (INIS)

Roos, Georg

2001-01-01

The general situation concerning services and nuclear power maintenance is reviewed following liberalization of Europa's power market. Issues relating to outsourcing maintenance services, effectiveness and reducing cost structure of maintenance are addressed on the cases of power markets in northern countries, Spain, Switzerland, Germany and Hungary. A special attention is paid on range of maintenance activity offered and performanced by Framatome. Ways of reducing costs in the field of maintenance as well as of reducing outage time are indicated. In conclusion, the following items are emphasized: - liberalization of Europe's power market in eastern Europe at its beginning; - in-house service in eastern Europe with numerous personnel; - Framatome ANP covers the entire range of maintenance competence; - consultance can be the first approach for a common co-operation

Minimizing the Power Consumption of Location-Based Services on Mobile Phones

DEFF Research Database (Denmark)

Kjærgaard, Mikkel Baun

2012-01-01

Location-based services have to pay careful attention to their power consumption in order not to drain the batteries of mobile phones. It is not a simple task to build low power location-based services that can run for hours because such services make heavy use of many power consuming features...... of mobile phones. In this article we discuss the power consumption of location-based services and mobile phone features, survey methods for how to minimize power consumption and summarize a number of design considerations for location-based service developers....

Research on Holographic Evaluation of Service Quality in Power Data Network

Science.gov (United States)

Wei, Chen; Jing, Tao; Ji, Yutong

2018-01-01

With the rapid development of power data network, the continuous development of the Power data application service system, more and more service systems are being put into operation. Following this, the higher requirements for network quality and service quality are raised, in the actual process for the network operation and maintenance. This paper describes the electricity network and data network services status. A holographic assessment model was presented to achieve a comprehensive intelligence assessment on the power data network and quality of service in the operation and maintenance on the power data network. This evaluation method avoids the problems caused by traditional means which performs a single assessment of network performance quality. This intelligent Evaluation method can improve the efficiency of network operation and maintenance guarantee the quality of real-time service in the power data network..

Beginning Power BI with Excel 2013 self-service business intelligence using Power Pivot, Power View, Power Query, and Power Map

CERN Document Server

Clark, Dan

2014-01-01

Understanding your company's data has never been easier than with Microsoft's new Power BI package for Excel 2013. Consisting of four powerful tools-Power Pivot, Power View, Power Query and Power Maps-Power BI makes self-service business intelligence a reality for a wide range of users, bridging the traditional gap between Excel users, business analysts and IT experts and making it easier for everyone to work together to build the data models that can give you game-changing insights into your business. Beginning Power BI with Excel 2013 guides you step by step through the process of analyzin

Biofouling of power-plant service systems by Corbicula

International Nuclear Information System (INIS)

Page, T.L.; Neitzel, D.A.; Simmons, M.A.; Hayes, P.F.

1983-08-01

Corbicula sp. foul the service water systems at nuclear power plants because the environment within these systems is compatible with the ecological requirements of the species. To reduce Corbicula fouling, components of service water systems and operating procedures that enhance the potential for fouling need to be identified. Factors important in mediating biofouling of service water systems appear to be screening potential, minimum and maximum velocities and the operational procedures employed during power plant biofoulant control and downtime. These conclusions are based on the results of a categorical model we used to correlate information from power plants with that on Corbicula life history. Power plant parameters in the model include temperature, dissolved oxygen concentration, screen and strainer size, maximum and minimum velocities, and elements of the biofouling control procedures. Parameters for Corbicula include tolerances to temperature, dissolved oxygen, biofouling control chemicals, velocity preferences, and optimal temperatures for each life stage and behavior. 13 references, 5 figures

Management of external support services for Almaraz Nuclear Power Plant

International Nuclear Information System (INIS)

Rayo Medina, A.; Lozano, J.M.

1994-01-01

Operation support services for a nuclear power plant have become increasingly important and voluminous during the power operation of the plant as well as during the shutdown and refuelling outage periods. Optimization of organization and management of these services entails a series of advantages and improvements aimed at the common objective of increasing plant availability and safety and eventually improving general operation results. This paper describes the existing operation support services at Almaraz nuclear power plant, with emphasis on site services, analysing the different possible options, their advantages and disadvantage with regard to plant organization and characteristics and describing, among others, the following aspects of these services: - Areas and specialities of required services - Scope of activities performed - Selection of candidate companies - Definition of technical and human resources - Supervision, coordination and control - Contracting and economic approach An evaluation is also made of the repercussions on the volume of workfromoperation support services rendered at Almaraz NPP by contracted companies, grouping them into three homogeneous areas (Full-Power Operation, Refuelling, and Design and Modifications) whose approach and execution are subject to different. (Author)

Service hall in Number 1 Fukushima Nuclear Power Station, Tokyo Electric Power Company, Inc

International Nuclear Information System (INIS)

Tawara, Shigesuke

1979-01-01

There are six BWR type nuclear power plants in the Number 1 Fukushima Nuclear Power Station, Tokyo Electric Power Company, Inc. The service hall of the station is located near the entrance of the station. In the center of this service hall, there is the model of a nuclear reactor of full scale. This mock-up shows the core region in the reactor pressure vessel for the number one plant. The diameter and the thickness of the pressure vessel are about 5 m and 16 cm, respectively. The fuel assemblies and control rods are set just like the actual reactor, and the start-up operation of the reactor is shown colorfully and dynamically by pushing a button. When the control rods are pulled out, the boiling of water is demonstrated. The 1/50 scale model of the sixth plant with the power generating capacity of 1100 MWe is set, and this model is linked to the mock-up of reactor written above. The operations of a recirculating loop, a turbine and a condenser are shown by switching on and off lamps. The other exhibitions are shielding concrete wall, ECCS model, and many kinds of panels and models. This service hall is incorporated in the course of study and observation of civics. The good environmental effects to fishes and shells are explained in this service hall. Official buildings and schools are built near the service hall utilizing the tax and grant concerning power generation. This service hall contributes to give much freedom from anxiety to the public by the tour. (Nakai, Y.)

SERVICE MAINTENANCE OF HIGHWAYS WHILE USING WIND POWER

Directory of Open Access Journals (Sweden)

Y. N. Kovalev

2011-01-01

Full Text Available The paper considers possible provision of electric power to motorway service stations on the basis of comparison of a diesel power station and a wind power plant. Arguments in favour of wind power plants that prove an economic and technical efficiency of their application are given in the paper.

47 CFR 74.785 - Low power TV digital data service pilot project.

Science.gov (United States)

2010-10-01

... 47 Telecommunication 4 2010-10-01 2010-10-01 false Low power TV digital data service pilot project... Power TV, TV Translator, and TV Booster Stations § 74.785 Low power TV digital data service pilot project. Low power TV stations authorized pursuant to the LPTV Digital Data Services Act (Public Law 106...

Evaluation of Different Power Saving Techniques for MBMS Services

Directory of Open Access Journals (Sweden)

Antonios Alexiou

2009-01-01

Full Text Available Over the last years we have witnessed an explosive growth of multimedia computing, wireless communication and applications. Following the rapid increase in penetration rate of broadband services, the Third Generation Partnership Project (3GPP is currently standardizing the Evolved-Multimedia Broadcast/Multicast Service (E-MBMS framework of Long Term Evolution (LTE, the successor of Universal Mobile Telecommunications System (UMTS. MBMS constitutes a point-to-multipoint downlink bearer service that was designed to significantly decrease the required radio and wired link resources. However, several obstacles regarding the high-power requirements should be overcome for the realization of MBMS. Techniques, such as Macrodiversity Combining and Rate Splitting, could be utilized to reduce the power requirement of delivering multicast traffic to MBMS users. In this paper, we analytically present several power saving techniques and analyze their performance in terms of power consumption. We provide simulation results that reveal the amount of power that is saved and reinforce the need for the usage of such techniques.

Remote operation and maintenance support services for nuclear power plants

International Nuclear Information System (INIS)

Yamamoto, Hiroki; Higuma, Koji; Shimizu, Shunichi; Sakuma, Masatake; Sonoda, Yukio; Kanemoto, Shigeru

2004-01-01

Toshiba Corporation constructed e-Toshiba Operating Plant Service (e-TOPS TM ) system and began remote operation and maintenance support service for nuclear power plants. The service put into practice remote operation and maintenance by harmony of information technologies such as internet and mobile, and nuclear power measurement/diagnostic technologies and security techniques. Outline of e-TOPS TM , remote-control service, -inspection system, -diagnostic service and technologies support service are explained. Construction, objects and application effects of e-TOPS TM , remote diagnostic system using image treatment techniques, construction of device record card control system are illustrated. (S.Y.)

Power quality measurement service in the support of large customers

Energy Technology Data Exchange (ETDEWEB)

Levesque, F. [Hydro-Quebec, Montreal, PQ (Canada)

2006-07-01

Power quality and how it is measured among Hydro Quebec's major customers were the focus of this conference presentation. Background information on Hydro Quebec and its customers was provided with reference to information on clients, employees and how the organization is organized. The presentation also included a discussion of power quality and how it is delivered at Hydro Quebec. For example, characteristics and target values of the voltage supplied by Hydro Quebec for high, medium and low voltages were examined. Personnel responsible for the grid have created a system to document each event submitted by customers. Documenting the actual power quality at the point of common coupling allows benchmarking of real data against announced characteristics and target values. This approach quantifies disturbances and helps to find and focus on disturbances that really influence large customers, mainly industrials. Portable and permanent installations issues were discussed followed by a discussion of a new service offering power quality metering on a regular basis. This metering service includes a complete analysis and technical support with dedicated expertise since customers are rarely fully experienced in power quality. The metering service is presented from the perspective of preventive maintenance with continuous quantification of a large number of indicators to assess the quality of the delivered power. Essential tools that customers can benefit from with this new service include real time electronic mail notification, weekly reporting and ad hoc technical support. This combination of various levels of services allows Hydro-Quebec to address the needs of these large customers in a flexible way. figs.

Information service system in the power plant

International Nuclear Information System (INIS)

Maruyama, Yukio; Mizuno, Hiromi; Shoda, Kohei; Sekine, Yasuhiro.

1994-01-01

For the purpose of improving the intelligent productivity in offices, the introduction of PC-LAN system by the initiative of users has been advanced. In this example, by connecting many personal computers, the information service system that possesses the information on the business of power stations in common was constructed, and intelligent productivity was improved. This information service system is that in which all users are the sponsor as the users and the offerer of information are united, therefore, high conscience level is required for individual users, and the attentive device for the easiness of use was exercised so as to always maintain newest information. The background of introducing this system is explained. The information systems in power stations are the system related to operation control, preventive maintenance and so on and the system for helping the routine works of personnel. The main functions are the offer of the operational data of power stations, the offer of the information on the expected visitors to the PR hall of nuclear power stations, electronic information exchange and so on. The constitution and the features of the system are reported. (K.I.)

Trace saver: A tool for network service improvement and personalised analysis of user centric statistics

Science.gov (United States)

Bilal, Muhammad; Asfand-e-Yar, Mockford, Steve; Khan, Wasiq; Awan, Irfan

2012-11-01

Mobile technology is among the fastest growing technologies in today's world with low cost and highly effective benefits. Most important and entertaining areas in mobile technology development and usage are location based services, user friendly networked applications and gaming applications. However, concern towards network operator service provision and improvement has been very low. The portable applications available for a range of mobile operating systems which help improve the network operator services are desirable by the mobile operators. This paper proposes a state of the art mobile application Tracesaver, which provides a great achievement over the barriers in gathering device and network related information, for network operators to improve their network service provision. Tracesaver is available for a broad range of mobile devices with different mobile operating systems and computational capabilities. The availability of Tracesaver in market has proliferated over the last year since it was published. The survey and results show that Tracesaver is being used by millions of mobile users and provides novel ways of network service improvement with its highly user friendly interface.

Scheduling and coordination for in-service inspection of nuclear power plant

International Nuclear Information System (INIS)

Li Songbai

1996-11-01

Based on the practice and experiences of pre-service and in-service inspections for Daya Bay Nuclear Power Plant (NPP) by Research Institute of Nuclear Power Operation (RINPO) following RSEM code, requirements of utility and actual situation in China, the in-service inspection preparation for organization, techniques and equipment/tooling, materials, personnel and documentation is briefly described. And the scheduling and coordinating consideration for planed in-service inspection activities during NPP outage is emphatically introduced. (2 refs., 4 figs.)

Power Efficient Service Differentiation Based on Traffic-Aware Survivable Elastic Optical Networks

DEFF Research Database (Denmark)

Turus, Ioan; Fagertun, Anna Manolova; Dittmann, Lars

2014-01-01

This study assesses the feasible energy savings whendefining different service classes based on protection schemesincore optical networks.Wepropose a dedicated energy savingstrategy for each of the service classes in order to minimize theoverall power consumption of the network.Four Classes of Se...... while for the proposed approach the difference in power consumption is almost negligible.Moreover, incase of the proposed approach,silver serviceclass can benefit for superior quality of service compared to the gold service class, due to the grooming mechanism.......This study assesses the feasible energy savings whendefining different service classes based on protection schemesincore optical networks.Wepropose a dedicated energy savingstrategy for each of the service classes in order to minimize theoverall power consumption of the network.Four Classes...... the sleep-mode capability of the opto-electronic devices as well as the elastic data-rateadaptation based on symbol-rate and modulation-format re-configurations. The results show that in the baseline approach the power consumption is strongly dependent on the ratio between the different service classes...

Power and Privilege: Community Service Learning in Tijuana

Science.gov (United States)

Camacho, Michelle Madsen

2004-01-01

As social scientists engage their own subjectivity, there is greater awareness of their own touristic "gaze," or at least the power relations that are evoked in the researcher-subject interaction. In teaching students involved in community service learning, the challenge is to provide a learning experience that addresses power inequities…

Challenges faced by engineering services group in meeting nuclear power project targets

International Nuclear Information System (INIS)

Phanse, N.R.

2001-01-01

Nuclear Power Corporation of India Ltd. (NPCIL) is an organisation building and operating nuclear power stations for which a number of different types of engineering services/activities are necessary. All these services are provided by Engineering Services Group of NPCIL. The activities and responsibilities of the group are discussed

Refueling outage services in Spanish Nuclear Power Plants

International Nuclear Information System (INIS)

Landete, J. L.; Soto, M.; Nunuez, A.

2007-01-01

DOMINGUIS Group, through its 75 years of business development, has positioned as the Spanish leader Group in Services for the Nuclear Energy and Petrochemical Sectors. In this article, we present the most significant services summary that, through the companies that constitute DOMINGUIS Group, we have developed in Refueling Outage in Spanish Nuclear Power Plants. (Author)

Research of nuclear power plant in-service maintenance based on virtual reality

International Nuclear Information System (INIS)

Wang Yong; Kuang Weijun

2015-01-01

This paper presents a method of constructing nuclear power plant in-service maintenance virtual simulation scene and virtual maintenance process. Taking air baffles dismantling process of CAP1400(China Advanced Passive 1400) nuclear power plant as an instance, this paper discusses ergonomics, space analysis, time assessment based on virtual reality in the process of in-service maintenance. It demonstrates the advantage of using VR technology to design and verify in-service maintenance process of nuclear power plant compared to the conventional way. (author)

Ancillary reactive power service allocation cost in deregulated markets: a methodology

International Nuclear Information System (INIS)

Hernandez, J. Horacio Tovar; Jimenez-Guzman, Miguel; Gutierrez-Alcaraz, Guillermo

2005-01-01

This paper presents a methodology to allocate reactive power costs in deregulated markets. Reactive power supply service is decomposed into voltage regulation and reactive power spinning reserve. The proposed methodology is based on sensitivities and the postage-stamp method in order to allocate the total costs service among all participants. With the purpose of achieving this goal, the system operator identifies voltage support and/or reactive power requirements, and looks out for suitable providers. One case study is presented here to illustrate the methodology over a simplified southeastern Mexican grid. (Author)

Exploiting ancillary services from distributed generation - perspectives for the Danish power system

DEFF Research Database (Denmark)

Nyeng, Preben; Pedersen, Knud Ole Helgesen; Østergaard, Jacob

2007-01-01

The share of the electric power production originating from distributed energy resources has rapidly increased during the recent past. However when it comes to ancillary services necessary to ensure the stability and appropriate operation of the power system, the distributed energy resources take...... a very passive role. This paper outlines suggestions on how to activate the potential of ancillary services from distributed energy resources, thereby exploiting their ability to contribute to power system operation. Furthermore, methods for integrating the ancillary service delivery into a deregulated...

Optimal generator bidding strategies for power and ancillary services

Science.gov (United States)

Morinec, Allen G.

As the electric power industry transitions to a deregulated market, power transactions are made upon price rather than cost. Generator companies are interested in maximizing their profits rather than overall system efficiency. A method to equitably compensate generation providers for real power, and ancillary services such as reactive power and spinning reserve, will ensure a competitive market with an adequate number of suppliers. Optimizing the generation product mix during bidding is necessary to maximize a generator company's profits. The objective of this research work is to determine and formulate appropriate optimal bidding strategies for a generation company in both the energy and ancillary services markets. These strategies should incorporate the capability curves of their generators as constraints to define the optimal product mix and price offered in the day-ahead and real time spot markets. In order to achieve such a goal, a two-player model was composed to simulate market auctions for power generation. A dynamic game methodology was developed to identify Nash Equilibria and Mixed-Strategy Nash Equilibria solutions as optimal generation bidding strategies for two-player non-cooperative variable-sum matrix games with incomplete information. These games integrated the generation product mix of real power, reactive power, and spinning reserve with the generators's capability curves as constraints. The research includes simulations of market auctions, where strategies were tested for generators with different unit constraints, costs, types of competitors, strategies, and demand levels. Studies on the capability of large hydrogen cooled synchronous generators were utilized to derive useful equations that define the exact shape of the capability curve from the intersections of the arcs defined by the centers and radial vectors of the rotor, stator, and steady-state stability limits. The available reactive reserve and spinning reserve were calculated given a

Public relations activities of the Service Hall for Kashiwazaki-Kariwa Nuclear Power Station

International Nuclear Information System (INIS)

Kono, T.

1998-01-01

This article includes information of the Service Hall for Kashiwazaki-Kariwa Nuclear Power Station. About 30% of the total electricity production in Japan is due to 16 power stations and 52 reactors. The service hall is a kind of atomic power pavilion for public relations. In Japan, each nuclear power station has such a pavilion, which acts a a center of public relations activities for the atomic power. (S. Grainger)

Power system services provided by inverter connected distributed energy resources

DEFF Research Database (Denmark)

For the last few years there has been a significant increase of DER units in Denmark, of those units more and more are connected to the power system using inverters. These inverter connected units have the potential to support the electrical power system with various power system services. One...

Improvement and optimization for in-service inspection of M310 nuclear power station

International Nuclear Information System (INIS)

Wang Chen; Sun Haitao; Gao Chen; Deng Dong

2015-01-01

In-service inspection (ISI) is an important method to ensure the safety of the mechanical equipment in nuclear power stations. According to the in-service inspection experience feedback from the domestic nuclear power stations, the reasonableness of some provisions in the RSE-M code are discussed and the applications of risk-informed in-service inspection (RI-ISI) are introduced, and the advices for the optimization of the ISI of the domestic M310 nuclear power stations are proposed. (authors)

9. Nuclear power plant service life prolongation

International Nuclear Information System (INIS)

Evropin, S.V.

1998-01-01

The problem of prolongation of nuclear power plant service life duration is discussed. A schematic diagram of the program developed in the course of activities dealing with NPP service time prolongation is shown and analyzed in details. It is shown that the basic moment when determining the strategy for NPP service time prolongation is the positive confirmation of the agreement between the NPP safety provisions and modern safety requirements. The other very important aspect of the problem is engineering substantiation of the measures assuring the reactor operation prolongation. The conclusion is made that available methods of recovering reactor materials properties, main components repair and replacement, the modern techniques for nondestructive testing of metals and NPP pipelines, as well as the developed approaches to reactor facility safety improvements make the prolongation of the Russian NPP service lifetimes possible from engineering viewpoint and economically desirable

Provision of enhanced ancillary services from wind power plants - Examples and challenges

DEFF Research Database (Denmark)

Hansen, Anca Daniela; Altin, Müfit; Iov, Florin

2016-01-01

Emphasis in this article is on the power system impact of wind power plants capability to provide enhanced ancillary services, i.e. temporary frequency response (TFR) and power oscillation damping (POD). The main objective of the article is to analyze and justify the challenges in the use of TFR...... and POD from wind power plants (WPPs). The study is conducted with an aggregated wind power plant model which is integrated into a generic power system model, specifically designed to assess the targeted ancillary services in a relatively simple, but still relevant environment. Various case studies...... with different wind power penetration levels are considered. The study shows that WPPs can provide additional control features such as TFR and POD to enhance the stability of power systems with large share of wind power. Nevertheless, the results illustrate that the power system stability can be potentially...

Energy- and value added services in the electric power market in Sweden

International Nuclear Information System (INIS)

Matsson, Peter

2000-03-01

This report tries to give a comprehensive picture of the offerings of energy- and value added services on the deregulated Swedish electric power market. A compilation of the service offerings from some 50 electric utilities is given. Market movements within deregulated sectors are treated with special emphasis on the electric power business

Community liberalisation of the electric power market and public service obligations

International Nuclear Information System (INIS)

Cristoforetti, Brice

2008-06-01

After an overview of original economic and social objectives at the basis of the creation of the European common market, the author examines whether the Community liberalisation of the European domestic electricity market has been an opportunity to acknowledge public service obligations in the European law, and more particularly examines the existence or relevance of the notion of electric power public service. This discussion addresses a period extending from the beginning of the 1960's to the Lisbon Treaty prepared in 2007. The author analyses rules of the European law, and the modalities and consequences of their adoption in the French law, as he considers that the evolution of French administrative legal evolution is the most relevant framework for this study on public service and electric power market. Thus, he first shows that the sector liberalisation, through the conflict between competition and defence of the general interest, actually allowed the existence of public service obligations for State members to be consecrated by the Community law. However, through the study of the electric power public service, the author shows that ambitions which had been initially put forward, are hardly compatible with some modalities of opening to competition

Evaluating perceived quality of CELPE service: A Brazilian power company case study

International Nuclear Information System (INIS)

Paes de Barros Filho, Joao; Fritsch Damasio da Silva, Cleriston; Nascimento Melo, Maria Auxiliadora do; Dumke de Medeiros, Denise

2009-01-01

This paper presents an application of a methodology for the diagnosis and analysis of the service quality perceived by a Particular Group of CELPE Corporate Customers, a Brazilian power company at Pernambuco State. Concepts, on the power sector, of Quality in Services, Performance Objectives and Critical Factors of Success have been used to develop the analysis. Next, the Critical Factors for a power company were determined and classified in accordance with the performance objectives: Quality, Dependability, Speed and Flexibility. From the factors established, a questionnaire was created to collect data. The case studied involves quantitative research on CELPE's private corporate principal customers using statistical tests to measure internal consistency reliability of the questionnaire scales and to identify underlying concepts, in the four groups analyzed, through which the private corporate customers perceive quality in the given services. Among the goals of this study are to improve the relationship with principal Private Corporate Clients, to create customer loyalty, and to maximize efforts in providing the power supply service, all of them with a view to improving and determining the Global Satisfaction Index

Evaluating perceived quality of CELPE service: A Brazilian power company case study

Energy Technology Data Exchange (ETDEWEB)

Paes de Barros Filho, Joao [Federal University of Pernambuco (UFPE), Center of Technology and Geosciences, 5th floor, Academico Helio Ramos av., Cidade Universitaria, Recife, PE 50.670-901 (Brazil)], E-mail: joaopaes@celpe.com.br; Fritsch Damasio da Silva, Cleriston [Federal University of Pernambuco (UFPE), Center of Technology and Geosciences, 5th floor, Academico Helio Ramos av., Cidade Universitaria, Recife, PE 50.670-901 (Brazil)], E-mail: cleriston_silva@yahoo.com.br; Nascimento Melo, Maria Auxiliadora do [Federal University of Pernambuco (UFPE), Center of Technology and Geosciences, 5th floor, Academico Helio Ramos av., Cidade Universitaria, Recife, PE 50.670-901 (Brazil)], E-mail: manmelo@ufpe.br; Dumke de Medeiros, Denise [Federal University of Pernambuco (UFPE), Center of Technology and Geosciences, 5th floor, Academico Helio Ramos av., Cidade Universitaria, Recife, PE 50.670-901 (Brazil)], E-mail: ddm@ufpe.br

2009-04-15

This paper presents an application of a methodology for the diagnosis and analysis of the service quality perceived by a Particular Group of CELPE Corporate Customers, a Brazilian power company at Pernambuco State. Concepts, on the power sector, of Quality in Services, Performance Objectives and Critical Factors of Success have been used to develop the analysis. Next, the Critical Factors for a power company were determined and classified in accordance with the performance objectives: Quality, Dependability, Speed and Flexibility. From the factors established, a questionnaire was created to collect data. The case studied involves quantitative research on CELPE's private corporate principal customers using statistical tests to measure internal consistency reliability of the questionnaire scales and to identify underlying concepts, in the four groups analyzed, through which the private corporate customers perceive quality in the given services. Among the goals of this study are to improve the relationship with principal Private Corporate Clients, to create customer loyalty, and to maximize efforts in providing the power supply service, all of them with a view to improving and determining the Global Satisfaction Index.

Evaluating perceived quality of CELPE service. A Brazilian power company case study

Energy Technology Data Exchange (ETDEWEB)

De Barros Filho, Joao Paes; Da Silva, Cleriston Fritsch Damasio; Do Nascimento Melo, Maria Auxiliadora; De Medeiros, Denise Dumke [Federal University of Pernambuco (UFPE), Center of Technology and Geosciences, 5th floor, Academico Helio Ramos av., Cidade Universitaria, Recife, PE 50.670-901 (Brazil)

2009-04-15

This paper presents an application of a methodology for the diagnosis and analysis of the service quality perceived by a Particular Group of CELPE Corporate Customers, a Brazilian power company at Pernambuco State. Concepts, on the power sector, of Quality in Services, Performance Objectives and Critical Factors of Success have been used to develop the analysis. Next, the Critical Factors for a power company were determined and classified in accordance with the performance objectives: Quality, Dependability, Speed and Flexibility. From the factors established, a questionnaire was created to collect data. The case studied involves quantitative research on CELPE's private corporate principal customers using statistical tests to measure internal consistency reliability of the questionnaire scales and to identify underlying concepts, in the four groups analyzed, through which the private corporate customers perceive quality in the given services. Among the goals of this study are to improve the relationship with principal Private Corporate Clients, to create customer loyalty, and to maximize efforts in providing the power supply service, all of them with a view to improving and determining the Global Satisfaction Index. (author)

Electric Vehicle Based Battery Storages for Future Power System Regulation Services

DEFF Research Database (Denmark)

Pillai, Jayakrishnan Radhakrishna; Bak-Jensen, Birgitte

2009-01-01

supplying the reserve power requirements. This limited regulation services from conventional generators in the future power system calls for other new reserve power solutions like Electric Vehicle (EV) based battery storages. A generic aggregated EV based battery storage for long-term dynamic load frequency...

Ancillary Services for the European Grid with High Shares of Wind and Solar Power

DEFF Research Database (Denmark)

Van Hulle, Frans; Holttinen, Hannele; Kiviluoma, Juha

2012-01-01

to be better understood. This relates both to the technical capabilities of the plants for delivering specific services and to the quantification of the needs. The paper presents the approach of the European IEE project REserviceS, aiming at establishing reference guidance for the ongoing developments......With significantly increasing share of variable renewable power generation like wind and solar PV, the need in the power system for ancillary services supporting the network frequency, voltage, etc. changes. Turning this issue around, market opportunities will emerge for wind and solar PV...... technology to deliver such grid services. In the European power system, adequate market mechanisms need to be developed to ensure that there will be an efficient trading of these services. For that purpose a range of (economic) characteristics of wind (and solar) power as providers of grid services need...

Fuel Cell Backup Power System for Grid Service and Micro-Grid in Telecommunication Applications: Preprint

Energy Technology Data Exchange (ETDEWEB)

Ma, Zhiwen [National Renewable Energy Laboratory (NREL), Golden, CO (United States); Eichman, Joshua D [National Renewable Energy Laboratory (NREL), Golden, CO (United States); Kurtz, Jennifer M [National Renewable Energy Laboratory (NREL), Golden, CO (United States)

2018-03-22

This paper presents the feasibility and economics of using fuel cell backup power systems in telecommunication cell towers to provide grid services (e.g., ancillary services, demand response). The fuel cells are able to provide power for the cell tower during emergency conditions. This study evaluates the strategic integration of clean, efficient, and reliable fuel cell systems with the grid for improved economic benefits. The backup systems have potential as enhanced capability through information exchanges with the power grid to add value as grid services that depend on location and time. The economic analysis has been focused on the potential revenue for distributed telecommunications fuel cell backup units to provide value-added power supply. This paper shows case studies on current fuel cell backup power locations and regional grid service programs. The grid service benefits and system configurations for different operation modes provide opportunities for expanding backup fuel cell applications responsive to grid needs.

Costing and pricing electric power reserve services. Final report

International Nuclear Information System (INIS)

Kirsch, L.D.; Rajaraman, R.; Clark, C.

1997-12-01

In the competitive electric power markets of the imminent future, reserves will be the second largest generation service in terms of their revenues and profits. Because reserves will be more widely traded than at present, they will be provided by the cheapest available sources regardless of the ownership of those sources. Price will determine the willingness of generators and consumers to provide reserve services; and it may also determine the willingness of reserve users to purchase reserve services. This report presents a methodology by which generation firms and merchant firms can profitably cost and price the reserve services that they offer. The methodology is generally applicable to a wide range of market structures that such firms might face

In-service inspection of nuclear power-plant pressure components

International Nuclear Information System (INIS)

Lautzenheiser, C.E.

1976-01-01

The early light-water-reactor systems for production of commercial power were designed and fabricated in accordance with the codes then being used for fossil-fired power-generating stations with some design changes for increased inspectability during fabrication. Over the past few years, major strides have been made in in-service inspection technology. Work has been under way to determine the reliability of nondestructive testing methods and to develop formal inspection programs throughout the world. The major problems associated with in-service inspection are the scarcity of qualified personnel, the variability in procedures and data recording between inspection agencies, and exposure of inspection personnel to radiation. Further work will be required to more completely mechanize piping inspections to reduce radiation exposure and to standardize inspection procedures, equipment, and certification of personnel. Worldwide attention to the requirements of the American Society of Mechanical Engineers' Boiler and Pressure Vessel Code, the size and integrity of inspection agencies, and efforts such as the development of personnel qualification and certification guides emphasize the importance of in-service inspection to nuclear safety

DS-CDMA system outer loop power control and improvement for multi-service

Institute of Scientific and Technical Information of China (English)

Guan Mingxiang; Guo Qing; Li Xing

2008-01-01

When a new user accesses the CDMA system, the load will change drastically, and therefore, the advanced outer loop power control (OLPC) technology has to be adopted to enrich the target signal interference ratio (SIR) and improve the system performance. The existing problems about DS-CDMA outer loop power control for multi-service are introduced and the power control theoretical model is analyzed. System simulation is adopted on how to obtain the theoretical performance and parameter optimization of the power control algorithm. The OLPC algorithm is improved and the performance comparisons between the old algorithm and the improved algorithm are given. The results show good performance of the improved OLPC algorithm and prove the validity of the improved method for multi-service.

Own power: Motives of having electricity without the energy company

International Nuclear Information System (INIS)

Leenheer, Jorna; Nooij, Michiel de; Sheikh, Omer

2011-01-01

New technologies will enable households to generate an increasing amount of their own electricity. Intentions to generate own power are a preliminary step towards actual behavior. Because own generation is still very limited and the behavior of early adopters may not be representative for the complete population, our study focuses on intentions rather than actual behavior. A consumer survey among 2047 Dutch households reveals that environmental concerns are the most important driver of a household's intention to generate its own power. Affinity with technology and energy and the reputation of electricity companies are also significant drivers, but financial factors and power outages are not. About 40% of Dutch households have an intention to generate their own power, with an overrepresentation of young households. This group falls apart in two sub segments; for the 'generating savers' (21%) a high intention to generate own power coincides with a high intention to save energy, whereas generating users (18%) combine a high intention to generate own power with a low intention to save energy. - Highlights: → A consumer survey studies household intentions to generate own power. → Environmental concerns are the most important motive for generating own power. → Other drivers are affinity with technology and reputation of electricity companies. → About 40% of Dutch households feel a need to generate their own electricity.

Integrated, Kerberized Login on MacOS X

Science.gov (United States)

Hotz, Henry B.

2006-01-01

Context for this information. MacOS X login process and available hooks. Authorization Services configuration. Authorization Services plug-in s. Kerberos plug-in s. Other bugs and recommendations. Authorization Services Called by loginwindow, screen saver and fast user switching. It calls Directory Services, Login Hook, and Login Items (System Preferences).

Residual services and power increases for components

International Nuclear Information System (INIS)

Pauli, W.

1991-01-01

As part of the moratorium in Switzerland work in nuclear power stations has been concentrating more on increasing capacity, reducing radiation levels to which personnel is exposed and extending the service life of existing plants. This has meant the requalification, repair or replacement of components and systems some of which have been in operation for more than 20 years. In addition to the classic role of manufacturer, the industry which acts as both supplier and manufacturer of these components also has to be the expertise holder, documentation pool and analysts. The examples described in this article show that close cooperation with operators leads to solutions which fully ensure the safe and successful operation of the plants, even in the second section of their service life. 4 refs

Support services for new nuclear power plant projects

International Nuclear Information System (INIS)

Manrique, Alberto B.; Cazorla, Francisco

2009-01-01

TECNATOM is a spanish engineering company with more than 50 years of experience working for the nuclear industry all over the world. TECNATOM has worked in over 30 countries in activities related to the Operation and Maintenance of Nuclear Power Plants. It started to work in the design of new Nuclear Power Plants in the early 90s and since then has continued collaborating with different suppliers in the design and licensing of new reactors specially in the areas of plant systems design, Man-Machine Interface design, Main Control Room simulators building, training, qualification of equipment and PSI/ISI engineering services. (author)

Quality assurance in the procurement of items and services for nuclear power plants

International Nuclear Information System (INIS)

1979-01-01

This Safety Guide was prepared as part of the Agency's programme, referred to as the NUSS programme, for establishing Codes of Practice and Safety Guides relating to nuclear power plants. It supplements the Agency's Code of Practice on Quality Assurance for Safety in Nuclear Power Plants (Safety Series No.50-C-QA), which states requirements for the control of procurement of items and services which are important to the safety of nuclear power plants, for the purpose of achieving quality. The establishment and implementation of controls over the procurement process provide a basis for establishing an appropriate level of confidence that the activities undertaken during procurement of items and services have been performed in accordance with the principles of quality assurance expressed in the Code, and that the required quality of items and services has been achieved. The purchaser, in establishing control over procurement, shall ensure that the quality criteria, quality level, and other quality requirements specified for the particular item or service are taken into account

Options for pricing ancillary services in a deregulated power system

Science.gov (United States)

Yamin, Hatim Yahya

2001-07-01

GENCOs in restructured systems are compensated for selling energy in the market. In a restructured market, a mechanism is required to entice participants in the market to provide ancillary services and to ensure adequate compensation that would guarantee its economic viability. The ISO controls the dispatch of generation, manages the reliability of the transmission grid, provides open access to the transmission, buys and provides ancillary services as required, coordinates day-ahead, hour-ahead schedules and performs real time balancing of load and generation, settles real time imbalances and ancillary services sales and purchases. The ISO, also, administers congestion management protocols for the transmission grid. Since the ISO does not own any generating units it must ensure that there is enough reserves for maintaining reliability according to FERC regulations, and sufficient unloaded generating capacity for balancing services in a real-time market. The ISO could meet these requirements by creating a competitive market for ancillary services, which are metered and remain unbundled to provide an accurate compensation for each supplier and cost to each consumer, In this study, we give an overview for restructuring and ancillary services in a restructured power marketplace. Also, we discuss the effect of GENCOs' actions in the competitive energy and ancillary service markets. In addition, we propose an auction market design for hedging ancillary service costs in California market. Furthermore, we show how to include the n-1 and voltage contingencies in security constrained unit commitment. Finally, we present two approaches for GENCOs' unit commitment in a restructured power market; one is based on game theory and the other is based on market price forecasting. In each of the two GENCOs' unit commitment approaches, we discuss the GENCOs' optimal bidding strategies in energy and ancillary service markets to maximize the GENCOs' profit.

Covering of the electric power service

International Nuclear Information System (INIS)

Unidad de Planeacion Minero Energetica, UPME

2000-01-01

In this article it is sought to deepen more in the topic of the covering of the electric power service, especially in the related with the mechanisms that could facilitate their amplification. In the new market outline, in the one that the participation of the agents is encouraged in all the activities of the chain of services in which the state is not direct lender of the same one, it is confused the form like a covering will be achieved that is of agreement with the goals that intend in the national plan of development and in the sub sectorial plans. Although the rules of the market one comes consolidating, the process of linking of the private capital, especially in the distribution activity, it evidences the importance of to settle down and to define responsibilities and explicit mechanisms in the topic of expansion of the covering. A first interpretation of the ruled indicates the obligation of the state of extending the covering to 100% and of assuming the projects that don't undertake the matters. This would be the reading from the traditional mentality. However, the regulation of you public services of electricity don't demand a total covering, but rather it covers to the users that have the capacity to assume, with their own resources, the efficient costs of benefit. The service will also be lent to residential users that don't have payment capacity, when there are contribution resources or fiscal resources for subsidiary

A Three-Part Electricity Price Mechanism for Photovoltaic-Battery Energy Storage Power Plants Considering the Power Quality and Ancillary Service

Directory of Open Access Journals (Sweden)

Yajing Gao

2017-08-01

Full Text Available To solve the problem of solar abandoning, which is accompanied by the rapid development of photovoltaic (PV power generation, a demonstration of a photovoltaic-battery energy storage system (PV-BESS power plant has been constructed in Qinghai province in China. However, it is difficult for the PV-BESS power plant to survive and develop with the current electricity price mechanism and subsidy policy. In this paper, a three-part electricity price mechanism is proposed based on a deep analysis of the construction and operation costs and economic income. The on-grid electricity price is divided into three parts: the capacity price, graded electricity price, and ancillary service price. First, to ensure that the investment of the PV-BESS power plant would achieve the industry benchmark income, the capacity price and benchmark electricity price are calculated using the discounted cash flow method. Then, the graded electricity price is calculated according to the grade of the quality of grid-connected power. Finally, the ancillary service price is calculated based on the graded electricity price and ancillary service compensation. The case studies verify the validity of the three-part electricity price mechanism. The verification shows that the three-part electricity price mechanism can help PV-BESS power plants to obtain good economic returns, which can promote the development of PV-BESS power plants.

U.S. Forest Service's Power-IT-Down Program

Energy Technology Data Exchange (ETDEWEB)

None

2016-01-01

Case study describes the U.S. Forest Service's Power-IT-Down Program, which strongly encouraged employees to shut off their computers when leaving the office. The U.S. Forest Service first piloted the program on a voluntary basis in one region then implemented it across the agency's 43,000 computers as a joint effort by the Chief Information Office and Sustainable Operations department.

NETWORK CENTRISM OPTIMIZATION OF EXPEDITIOUS SERVICE OF ELEMENTS OF THE POWER SUPPLY SYSTEM

Directory of Open Access Journals (Sweden)

Ye.I. Sokol

2016-06-01

Full Text Available Purpose. Development of precision selection criteria of options of technical realization of effective active and adaptive system of expeditious service of elements of a power supply system in the conditions of network-centric management. Methodology. In development of power supply systems their evolution from the elementary forms using elementary network technologies and models of interactions in power to more irregular shapes within the concept of Smart Grid with elements of network-centric character is observed. This direction is based on Internet-technologies of the last generation, and realize models of power activity which couldn't be realized before. Results. The number of possible options of active and adaptive system of expeditious service of elements of a power supply system is usually rather big and it is difficult to choose the acceptable option by direct search. Elimination of admissible options of the technical realization constructed on the principles of a network centrism means application of the theory of multicriteria optimization from a position of discrete programming. The basis of procedure of elimination is made by algorithm of an assessment of system by criterion of accuracy. Originality. The case of an assessment of the precision characteristic of system at restrictions for the set accuracy is connected with need of decomposition of requirements of all system in general and on separate subsystems. For such decomposition the ratios connecting the accuracy of functioning of a separate subsystem with variations of parameters of all system, and also with precision characteristics of subsystems of the lower levels influencing this subsystem are received. Practical value. In the conditions of the network-centric organization of management of expeditious service of elements of a power supply system elimination of options of subsystems when using precision criterion allows to receive the maximum number of essentially possible

Demonstration of Essential Reliability Services by a 300-MW Solar Photovoltaic Power Plant

Energy Technology Data Exchange (ETDEWEB)

Loutan, Clyde; Klauer, Peter; Chowdhury, Sirajul; Hall, Stephen; Morjaria, Mahesh; Chadliev, Vladimir; Milam, Nick; Milan, Christopher; Gevorgian, Vahan

2017-03-24

The California Independent System Operator (CAISO), First Solar, and the National Renewable Energy Laboratory (NREL) conducted a demonstration project on a large utility-scale photovoltaic (PV) power plant in California to test its ability to provide essential ancillary services to the electric grid. With increasing shares of solar- and wind-generated energy on the electric grid, traditional generation resources equipped with automatic governor control (AGC) and automatic voltage regulation controls -- specifically, fossil thermal -- are being displaced. The deployment of utility-scale, grid-friendly PV power plants that incorporate advanced capabilities to support grid stability and reliability is essential for the large-scale integration of PV generation into the electric power grid, among other technical requirements. A typical PV power plant consists of multiple power electronic inverters and can contribute to grid stability and reliability through sophisticated 'grid-friendly' controls. In this way, PV power plants can be used to mitigate the impact of variability on the grid, a role typically reserved for conventional generators. In August 2016, testing was completed on First Solar's 300-MW PV power plant, and a large amount of test data was produced and analyzed that demonstrates the ability of PV power plants to use grid-friendly controls to provide essential reliability services. These data showed how the development of advanced power controls can enable PV to become a provider of a wide range of grid services, including spinning reserves, load following, voltage support, ramping, frequency response, variability smoothing, and frequency regulation to power quality. Specifically, the tests conducted included various forms of active power control such as AGC and frequency regulation; droop response; and reactive power, voltage, and power factor controls. This project demonstrated that advanced power electronics and solar generation can be

Climate saver atomic energy?

International Nuclear Information System (INIS)

1992-12-01

According to the Schleswig-Holstein Land government nuclear power phaseout is compatible with measures designed to protect world climate. Only efforts aimed at quickly reducing energy demand by means of thermal insulation, energy conservation techniques, cogeneration systems and application of renewable energies are necessary. The Schleswig-Holstein energy concept is given as an example of making possible a worldwide carbon dioxide reduction. (DG) [de

Using Service Oriented Architecture in a Generic Virtual Power Plant

DEFF Research Database (Denmark)

Andersen, Peter Bach; Poulsen, Bjarne; Træholt, Chresten

2009-01-01

The purpose of this paper is to find and describe a suitable software framework that can be used to help implement the concept of a Generic Virtual Power Plant in the future power system. The Generic Virtual Power Plant concept, along with the utilization of distributed energy resources, has many...... the Generic Virtual Power Plant, an array of different software design principles, patterns and architectures must be applied. Especially Service Oriented Architecture (SOA) can aid in implementing the Generic Virtual Power Plant.......The purpose of this paper is to find and describe a suitable software framework that can be used to help implement the concept of a Generic Virtual Power Plant in the future power system. The Generic Virtual Power Plant concept, along with the utilization of distributed energy resources, has many...... interesting properties that can influence the future shape of power markets. The concept holds many promises including cheaper power to the consumer, a more flexible and responsive power production and the support of a more environment-friendly development. In order to realize a software solution supporting...

Fuel flexibility in power generation onboard offshore floating units

Energy Technology Data Exchange (ETDEWEB)

Keep, Jeroen van [Waertsilae Corporation, Helsinki (Finland)

2012-07-01

Power Plants for offshore oil and gas installations utilizing dual fuel (DF) reciprocating engines are by many owners seen as an interesting alternative to conventional solutions due to the apparent advantages in fuel flexibility, fuel efficiency and lower emission. The paper summarizes the dual fuel technology, typical solutions for FPSO's and operational. Items that are discussed: DF operation and how it works; fuel flexibility, including transfer between fuel modes; fuel efficiency, also in production an important cost saver; emissions of the different fuel modes; size and weights, constraints; experiences of the P-63 project. With the above it is safe to conclude that the DF-technology is mature with important benefits for the offshore production market in certain specific applications, most notably the FPSO's for fields in low gas to oil ratios, bringing important fuel cost savings and also for new-built F-LNG/FSO/FPSO's where the power plant can be accommodated below decks, freeing up valuable deck space for the process plant. (author)

Coordinated system services from offshore wind power plants connected through HVDC networks

DEFF Research Database (Denmark)

Zeni, Lorenzo; Glasdam, Jakob; Hesselbæk, Bo

2014-01-01

This paper presents an overview of power system services in networks involving multiple onshore power systems, a voltage sourced converter (VSC) based high voltage direct current (HVDC) offshore network and an offshore wind power plant (OWPP). A comprehensive list of services regarding onshore...... as well as offshore network operation – both AC and DC – will be discussed from a state of the art perspective. Among them, the most interesting have been selected and will be treated in more detail and the main contribution of this paper will be to shed light on the most relevant aspects related...... to their implementation. For example, new findings on onshore AC voltage control are reported, that help the characterisation of potential AC voltage control that a VSC-HVDC station may offer to an onshore AC grid. The HVDC system behind the VSC-HVDC station may connect, through other converters, to another AC power...

Agent Services for Situation Aware Control of Power Systems With Distributed Generation

DEFF Research Database (Denmark)

Saleem, Arshad; Heussen, Kai; Lind, Morten

2009-01-01

Electric Power system of Denmark exhibits some unique characteristics. An increasing part of the electricity is produced by distributed generators (DGs). Most of these DGs are connected to the network at the distribution level. At the same time the concept of vehicle to grid (V2G) is already...... in the process of realization. This situation has created an incentive in electric power industry to utilize modern information and communication technologies (ICT) for improving the distribution system automation. This paper describes our work on how significantly increased amount of distributed generation...... services. We present results from several experiments where agents offer and utilize services in order to achieve distributed and autonomous control for subgrid operation of a distribution system. Finally it is discussed how the service oriented architecture can be combined with knowledge based reasoning...

the policy paradox in africa

International Development Research Centre (IDRC) Digital Library (Canada)

Book and cover design: Saverance Publishing Services ..... The authors describe how the production of statistical data, economic analysis, and .... In several countries, special interest groups such as labour unions, manufacturers' associations, ...

Secure provision of reactive power ancillary services in competitive electricity markets

Science.gov (United States)

El-Samahy, Ismael

The research work presented in this thesis discusses various complex issues associated with reactive power management and pricing in the context of new operating paradigms in deregulated power systems, proposing appropriate policy solutions. An integrated two-level framework for reactive power management is set forth, which is both suitable for a competitive market and ensures a secure and reliable operation of the associated power system. The framework is generic in nature and can be adopted for any electricity market structure. The proposed hierarchical reactive power market structure comprises two stages: procurement of reactive power resources on a seasonal basis, and real-time reactive power dispatch. The main objective of the proposed framework is to provide appropriate reactive power support from service providers at least cost, while ensuring a secure operation of the power system. The proposed procurement procedure is based on a two-step optimization model. First, the marginal benefits of reactive power supply from each provider, with respect to system security, are obtained by solving a loadability-maximization problem subject to transmission security constraints imposed by voltage and thermal limits. Second, the selected set of generators is determined by solving an optimal power flow (OPF)-based auction. This auction maximizes a societal advantage function comprising generators' offers and their corresponding marginal benefits with respect to system security, and considering all transmission system constraints. The proposed procedure yields the selected set of generators and zonal price components, which would form the basis for seasonal contracts between the system operator and the selected reactive power service providers. The main objective of the proposed reactive power dispatch model is to minimize the total payment burden on the Independent System Operator (ISO), which is associated with reactive power dispatch. The real power generation is

75 FR 22772 - Cargill Power Markets, LLC, Complainant v. Public Service Company of New Mexico, Respondent...

Science.gov (United States)

2010-04-30

... Markets, LLC, Complainant v. Public Service Company of New Mexico, Respondent; Notice of Complaint April... of the Federal Power Act (FPA), 16 U.S.C. 824e (2006), Cargill Power Markets, LLC (Complainant) filed a formal complaint against Public Service Company of New Mexico (Respondent) alleging that...

Energy and ancillary service dispatch through dynamic optimal power flow

International Nuclear Information System (INIS)

Costa, A.L.; Costa, A. Simoes

2007-01-01

This paper presents an approach based on dynamic optimal power flow (DOPF) to clear both energy and spinning reserve day-ahead markets. A competitive environment is assumed, where agents can offer active power for both demand supply and ancillary services. The DOPF jointly determines the optimal solutions for both energy dispatch and reserve allocation. A non-linear representation for the electrical network is employed, which is able to take transmission losses and power flow limits into account. An attractive feature of the proposed approach is that the final optimal solution will automatically meet physical constraints such as generating limits and ramp rate restrictions. In addition, the proposed framework allows the definition of multiple zones in the network for each time interval, in order to ensure a more adequate distribution of reserves throughout the power system. (author)

Power versus participation in health service teams: a delicate balance.

Science.gov (United States)

Marriott, A; Harris, I

2000-05-01

The purpose of this paper is to critically review the effectiveness of a participative management approach within health service teams. It questions the reality of staff empowerment as an essential product of this approach, and examines the influence of power issues on the degree of empowerment that the organization may allow. The benefits and challenges of staff participation are highlighted, with reference to the manager's role in the participation process. The article concludes by advocating the positive use of power in order to maintain the integrity and effectiveness of a participative management approach.

Influence of communication systems to support the services in nuclear power plants

International Nuclear Information System (INIS)

Moron, P.; Ruiz, J. C.; Guerra, F. J.

2005-01-01

The continuous technological advances related to communications infrastructures and mobility solutions, increasingly within reach of the companies, are leading to upgrade most of the associated processes within a service company. Tecnatom is not irrelevant to it and is carrying out a technological development for the intercommunication between its facilities, and the spanish nuclear power plants. Consequently is carrying out and adjustment and optimization of their services. All the performances are included in a corporate project to three years named ARCOM. Along 2004 the first results have been obtained, remote analysis of data has been made and the access to the management information systems from the nuclear power stations has been facilitated. (Author)

The effect of women's decision-making power on maternal health services uptake: evidence from Pakistan.

Science.gov (United States)

Hou, Xiaohui; Ma, Ning

2013-03-01

A large body of research has explored the links between women's decision making and their uptake of maternal health services, but the evidence so far is inconclusive. This study uses the Pakistan Social and Living Standards Measurement Survey to examine the influence of household decision making on women's uptake of maternal health services. We find that women's decision-making power has a significant positive correlation with maternal health services uptake and that influential males' decision-making power has the opposite effect, after controlling for socio-economic indicators and supply-side conditions. Our findings suggest that empowering women and increasing their ability to make decisions may increase their uptake of maternal health services. They also suggest that policies directed toward improving women's utilization of maternal health services in Pakistan must target men as well as women.

Russian Pre-Service and Young In-Service Teachers’ Views on Cultural Dimensions of Russian Education: Power Distance

Directory of Open Access Journals (Sweden)

Victoria Pogosian

2016-10-01

Full Text Available The article discusses Power Distance as one of the cultural dimensions of Russian education based on the perceptions and views of Russian pre-service and young in-service teachers. These views were elicited in the context of a 2 ECTS master’s degree course, “Cultural Dimensions of Education,” offered at Herzen State Pedagogical University of Russia. The course includes Hofstede’s framework of cultural dimensions and the manifestation of these dimensions in educational settings, Hall’s cultural-factors theory (particularly high- and low- context cultures and monochronic versus polychronic cultures, but the research focuses on only one of the cultural dimensions, Hofstede’s Power Distance. The students’ reflections on their own experiences presented in writing as case studies and discussed with their peer students have been analyzed. Evidence has been gained that large Power Distance is a typical feature of Russian educational settings’ attitudes and relationships among all the actors—school administration, teachers, pupils, and their parents. The article discusses some of the cases presented and analyzed by the students and their arguments supporting their points of view. 

Continuing the service of safety-related concrete structures in nuclear power plants

International Nuclear Information System (INIS)

Naus, D.J.; Oland, C.B.; Ellingwood, B.R.; Mori, Y.; Arndt, E.G.

1993-01-01

The Structural Aging (SAG) Program is addressing the aging management of safety-related concrete structures in nuclear power plants (NPPs) for the purpose of providing improved technical bases for their continued service. The program consists of three technical tasks: materials property data base, structural component assessment/repair technologies, and quantitative methodologies for continued service determinations. Recent accomplishments under each of these tasks are summarized

Evaluation of a Generic Virtual Power Plant Framework Using Service Oriented Architecture

DEFF Research Database (Denmark)

Andersen, Peter Bach; Poulsen, Bjarne; Decker, Morten

2008-01-01

interesting properties that can influence the future shape of power markets. The concept holds many promises including cheaper power to the consumer, a more flexible and responsive power production and the support of a more environment- friendly development. In order to realize a software solution supporting...... the generic virtual power plant, an array of different software design principles, patterns and architectures must be applied. Especially Service Oriented Architecture (SOA) can aid in implementing the generic virtual power plant. An analysis of the Nordic power market has been carried out in order...... to identify potential issues and barriers, henceforth mentioned as challenges, connected with the introduction of the generic virtual power plant concept. In this paper, three use case scenarios will show how each of these challenges can be overcome by the proposed solution framework. The use case scenarios...

Nuclear reactor capable of electric power generation during in-service inspection

International Nuclear Information System (INIS)

Nakamura, Shinsuke; Nogami, Hitoshi.

1992-01-01

The nuclear power plant according to the present invention can generate electric power even in a period when one of a pair of reactors is put to in-service inspection. That is, the nuclear power plant of the present invention comprises a system constitution of two nuclear reactors each of 50% thermal power and one turbine power generator of 100% electric power. Further, facilities of various systems relevant to the two reactors each of 50% thermal power, as a pair, are used in common as much as possible in order to reduce the cost for construction and maintenance/ inspection. Further, a reactor building and a turbine building disposed in adjacent with each for paired two reactors each of 50% thermal power are arranged vertically. This arrangement can facilitate the common use of the facilities for various systems and equipments to attain branching and joining of fluids in reactor feed water systems and main steam system pipelines easily with low pressure loss and low impact shocks. The facility utilization factor of such reactors is remarkably improved by doubling the period of continuous power generation. As a result, economic property is remarkably improved. (I.S.)

Next generation environmentally-friendly trams; Die naechste Generation umweltfreundlicher Stadtbahnen

Energy Technology Data Exchange (ETDEWEB)

Froehlich, M.; Klohr, M. [Bombardier Transportation GmbH, Mannheim (Germany); Beek, M. in der [Rhein-Neckar-Verkehr GmbH, Mannheim (Germany)

2008-07-15

Bombardier and transport operator Rhein-Neckar-Verkehr GmbH (RMV) are equipping a fleet of trams with energy storage systems - a first. Compared with modern regenerative-braking trams, the new energy storage technology yields energy savings of 25%. The energy storage system will also enable the introduction of a new tram line in the Neuenheimer Feld district of Heidelberg, which up to now has been rejected by the adjoining university departments. When powered by the energy storage system, i.e. without power input from the overhead line, the trams are likely to produce much less radiation of magnetic fields, which has been the main reason why the university departments at Neuenheimer Feld have opposed the plan. The Mitrac Energy Saver system has already been field-tested in daily revenue service in Mannheim. (orig.)

18 CFR 2.22 - Pricing policy for transmission services provided under the Federal Power Act.

Science.gov (United States)

2010-04-01

... 18 Conservation of Power and Water Resources 1 2010-04-01 2010-04-01 false Pricing policy for... INTERPRETATIONS Statements of General Policy and Interpretations Under the Federal Power Act § 2.22 Pricing policy... Policy Statement on its pricing policy for transmission services provided under the Federal Power Act...

Improving Quality of Service and Reducing Power Consumption with WAN accelerator in Cloud Computing Environments

OpenAIRE

Shin-ichi Kuribayashi

2013-01-01

The widespread use of cloud computing services is expected to deteriorate a Quality of Service and toincrease the power consumption of ICT devices, since the distance to a server becomes longer than before. Migration of virtual machines over a wide area can solve many problems such as load balancing and power saving in cloud computing environments. This paper proposes to dynamically apply WAN accelerator within the network when a virtual machine is moved to a distant center, in order to preve...

Study and discussion on management of nuclear island in-service inspection procedure system in nuclear power plant

International Nuclear Information System (INIS)

Zhang Xueliang; Fan Yancheng

2014-01-01

In-service inspection of nuclear island is the important way for keeping safety operation of nuclear power plant. Taking Daya Bay Nuclear Power Plant as example, the management problems of in-service inspection system was studied and discussed from the angle of references, contents, classifications etc. Based on comparison with French practice, some points of view on perfection of in-service inspection system and improvement of management ability under future multi-bases and multi-units management mode were presented. (authors)

Replacement of major nuclear power plant components for service life extension

International Nuclear Information System (INIS)

Novak, S.

1987-01-01

Problems are discussed associated with replacement of nuclear power plant components with the aim to extend their original scheduled life. The existing foreign experience shows that it is technically feasible to replace practically all basic components for which the necessity of replacement is established. Data is summed up on the replacement of steam generators in US and West German nuclear power plants showing the duration of the job, the total consumption of manhours, the collective dose equivalent and the cost. Attention is also focused on implemented and projected replacements of circulation pipes in nuclear power plants abroad. Based on these figures, the cost is estimated of the replacement of the reactor vessel and the steam generators for WWER-440 nuclear power plants. The conclusion is arrived at that even based on a conservative estimate, the extension by 20 years of the service life of a nuclear power plant is economically more effective than the construction of a new plant. (Z.M.) 2 tabs., 15 refs., 3 figs

77 FR 59679 - Central Vermont Public Service Corporation (Millstone Power Station, Unit 3); Order Approving...

Science.gov (United States)

2012-09-28

... NUCLEAR REGULATORY COMMISSION [NRC-2012-0044; Docket No. 50-423] Central Vermont Public Service Corporation (Millstone Power Station, Unit 3); Order Approving Application Regarding Corporate Restructuring and Conforming Amendment I Dominion Nuclear Connecticut, Inc. (DNC), Central Vermont Public Service...

From conception to decommissioning-servicing nuclear power

International Nuclear Information System (INIS)

Burbridge, R.N.

1988-01-01

In any utility, or integrated group of utilities, there is a need for an identified body charged with being the guardians of the design database. This is essential with nuclear stations. Within the CEGB (Central Electricity Generating Board), the Generation Development and Construction Division (GDCD) acts as that guardian and performs the triple role of Client (specifying the requirements and procuring new stations), of Architect-Engineer (defining systems and plant layouts and performing effective project management), and of Consultant (for servicing operating stations). Long-term plant developments are pursued until they can be securely incorporated into station proposals. Planning Inquiries for new stations are supported technically until the proposed station is approved and the proposal becomes a project which is managed to be completed on programme and within budget to the required standards. Once complete and commissioned, the station is handed over to the operators and the designers and constructors take on their role of Independent Assessors of proposed design changes. At the end of its life, the decommissioning of the station becomes another project requiring effective management. Nuclear power requires servicing from conception to decommissioning. 1 fig

Power Product Equipment Technician: Outboard-Engine Systems and Service. Teacher Edition [and] Student Edition.

Science.gov (United States)

Hilley, Robert

This curriculum guide contains teacher and student materials for a course on outboard-engine boat systems and service for power product equipment technician occupations. The course contains the following four units of instruction: (1) Outboard-Engine Design and Identification; (2) Operation and Service of Engine-Support Systems; (3) Operation and…

77 FR 16026 - Cargill Power Markets, LLC v. Public Service Company of New Mexico; Notice of Compliance Filing

Science.gov (United States)

2012-03-19

... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. EL10-61-002] Cargill Power Markets, LLC v. Public Service Company of New Mexico; Notice of Compliance Filing Take notice that on March 12, 2012, Public Service Company of New Mexico and Cargill Power Markets, LLC submitted a...

Analysis of the Impact of Wind Power Participating in Both Energy and Ancillary Services Markets – The Danish Case

DEFF Research Database (Denmark)

Soares, Tiago; Morais, Hugo; Pinson, Pierre

2014-01-01

The impact of a high penetration of wind power generation in power systems motivates need for an assessment of its inte raction with electricity markets. With the continuous evolution of wind turbines technology, wind farms have today the ability to provide certain ancillary services...... with appropriate levels of security and reliability . The participation of wind f arms i n ancillary service market s ought to rely on market designs and offering strategies that satisfy power system needs, as well as their operating characteristics . Here we evaluate the system impact of different offering...... strategies that wind farms employ on ene rgy and ancillary service market. A lready proposed Proportional Wind Reserve Strategy (PWRS) and a Continuo us Wind Reserve Strategy (CWRS) are used to determine the amount of available power for ancillary services. A case study based on real and recent dat...

Siemens's spectrum of deliveries and services for nuclear power plants

International Nuclear Information System (INIS)

2011-01-01

In 2001, Siemens and Framatome merged their nuclear activities in the present Areva NP joint venture. Siemens has since focused on the construction and further development of conventional power plants and on the so-called conventional island (CI), the non-nuclear part of a nuclear power plant, i.e. the steam turbine, generator, and plant I and C systems, and also on service for the conventional part of nuclear power plants. Its role as a minority shareholder in Areva NP constrained Siemens. For this reason, the company in January 2009 decided to terminate its interest in Areva NP effective January 30, 2012. By January 2012 at the latest, Siemens will transfer to the majority shareholder Areva, holding 66 percent of the shares, its interest in the joint venture. For the time being, the joint venture still entails certain limitations to Siemens's activities in the nuclear field. Its delivery of the conventional island for the Olkiluoto 3 (OL3) nuclear power plant in Finland confirms the company's know-how in power plant construction. When commissioned, its 1,720 MW power will make OL3 the world's largest nuclear generating unit. The turbo-generator of the CI comprises a double-flow HP turbine and a 6-flow LP turbine. The driven 4-pole generator with a power of up to 2,200 MVA consists of a water-cooled stator and a hydrogen-cooled rotor. (orig.)

Least cost planning within the service concept of power supply companies

International Nuclear Information System (INIS)

Lueschen, H.; Sonntag, J.; Werner, R.

1995-01-01

In discussing the implementation of energy service concepts, German power supply companies are gradually adopting categories originating from the USA, namely integrated resources planning (IRP), least cost planning (LCP), and demand-side management (DSM). While the activities of German power supply companies are more encompassing than those of their US counterparts in the traditional features of DSM such as load management, information, and consulting, further-going measures such as direct investment and financial incentive programmes for exploiting energy-saving potentials play a less important role and are controversial in the energy-political debate. The article presents the concept of power supply companies for implementing IRP/LCP and makes a concrete assessment of the worth and efficiency of consulting compared with the newer type of financial incentive programmes. (orig.) [de

Fuel management service for Tarapur Atomic Power Station core thermal hydraulics

International Nuclear Information System (INIS)

Saha, D.; Venkat Raj, V.; Markandeya, S.G.

1977-01-01

Core thermal hydraulic analysis forms an integral part of the fuel management service for the Tarapur reactors. A distinguishing feature of boiling water reactors is the dependence of core flow distribution on the power distribution. Because of the changes in the axial and radial power distribution from cycle to cycle as well as during the cycle and also the variations in leakage flow, it is necessary to evaluate the core thermal hydraulic parameters for every cycle. Some of the typical results obtained in the course of analysis for different cycles of both the units at Tarapur are presented. The use of MCPR (Minimum Critical Power Ratio), instead of MCHFR (Minimum Critical Heat Flux Ratio) as a figure of merit for fuel cladding integrity is also discussed. (K.B.)

Nuclear containment systems and in-service inspection status of Korea nuclear power plants

Energy Technology Data Exchange (ETDEWEB)

Jihong, Park; Jaekeun, Hong; Banuk, Park [Korea Institute of Machinery and Materials, Dept. of Authorized Test and Evaluation, Kyungnam (Korea, Republic of)

2007-07-01

20 unit nuclear power plants in Korea have been operated and maintained since the first unit started in commercial service in 1978. Most recently 4 units were under construction and several units were planned to be constructed. by industries. 4 types of nuclear containment systems have been constructed until now: first, metal containments, then pre-stressed concrete containments with grouted tendon systems, followed by pre-stressed concrete containments with un-grouted tendon systems, and Korea standard nuclear containments. All the nuclear containments should be inspected periodically. Therefore for periodic in-service inspection, several appropriate technical requirements should be applied differently depending on the specific nuclear containment types. With the changes of times, nuclear containment systems have undergone a remarkable change, and finally nuclear containment system of Korea standard nuclear power plant was settled down, and as a matter of course it dominates the trend of present and future nuclear containment systems. Overall in-service inspection results of most Korea nuclear containments have not showed any serious evidence of degradation.

Socially-pedagogical terms of preparation of senior pupils to service in Military Powers of Ukraine

OpenAIRE

Ryutin V.V.

2010-01-01

The problem of preparation of senior pupils is investigational to military service. The social pedagogical terms of preparation of senior pupils are certain to military service. Adequate psychological pedagogical measures are developed on overcoming of tendency of subzero perception by the senior pupils of service in Military Powers of Ukraine. Basic directions the personal interest are rotined in harmonious, valuable psychical and physical development of the Ukrainian young people. The natio...

Experimental investigations of overvoltages in 6kV station service cable networks of thermal power plants

Energy Technology Data Exchange (ETDEWEB)

Vukelja, P.I.; Naumov, R.M.; Drobnjak, G.V.; Mrvic, J.D. [Nikola Tesla Inst., Belgrade (Yugoslavia)

1996-12-31

The paper presents the results of experimental investigations of overvoltages on 6kV isolated neutral station service cable networks of thermal power plants. The overvoltages were recorded with capacitive voltage measurement systems made at the Nikola Tesla Institute. Wideband capacitive voltage measurement systems recorded a flat response from below power frequencies to 10MHz. Investigations of overvoltages were performed for appearance and interruption of metal earth faults, intermittent earth faults, switching operation of HV motors switchgear, switching operation of transformers switchgear, and transfer of the network supply from one transformer to another. On the basis of these investigations, certain measures are proposed for limiting overvoltages and for the reliability of station service of thermal power plants.

Development of in-service inspection plans for nuclear components at the Surry 1 nuclear power station

International Nuclear Information System (INIS)

Vo, T.V.; Simonen, F.A.; Doctor, S.R.; Smith, B.W.; Gore, B.F.

1993-01-01

As part of the nondestructive evaluation reliability program sponsored by the US Nuclear Regulatory Commission at Pacific Northwest Laboratory, a methodology has been developed for establishing in-service inspection priorities of nuclear power plant components. The method uses results of probabilistic risk assessment in conjunction with the techniques of failure modes and effects analysis to identify and prioritize the most risk-important systems and components for inspection at nuclear power plants. Surry nuclear power station unit 1 was selected for demonstrating the methodology. The specific systems selected for analysis were the reactor pressure vessel, the reactor coolant, the low pressure injection including the accumulators, and the auxiliary feedwater. The results provide a risk-based ranking of components that can be used to establish a prioritization of the components and a basis for developing improved in-service inspection plans at nuclear power plants

Load control services in the management of power system security costs

International Nuclear Information System (INIS)

Jayantilal, A.; Strbac, G.

1999-01-01

The new climate of deregulation in the electricity industry is creating a need for a more transparent cost structure and within this framework the cost of system security has been a subject of considerable interest. Traditionally power system security has been supplied by out-of-merit generation, in the short term, and transmission reinforcement, in the long term. This paper presents a method of analysing the role of load-demand in the management of power system security costs by utilising load control services (LCS). It also proposes a competitive market to enable bidding from various participants within the electricity industry to supply system security. (author)

Automatic ultrasonic pre-service, and in-service inspection of pressurized components of the primary circuit of nuclear power stations

International Nuclear Information System (INIS)

Muller, G.P.; Hallermeier, L.; Heinrich, D.; Grabendorfer, W.; Rebrmann, M.

1985-01-01

Ultrasonic pre-service and especially in-service inspection activities on the primary circuit of nuclear power stations form an essential part of the maintenance work that must be performed throughout the lifetime to ensure plant integrity. Consequently, the equipment required to carry out these inspections must be continuously improved in respect of reliability, safety, accuracy and ease of handling in order to minimize disturbances and repairs and reduce radiation exposure of the personnel. The authors' discussion of technique, equipment and performance of automated ultrasonic inspection is based on 15 years of experience in the testing of components of the primary circuit in nuclear power stations. To cover all inspection areas of the RPV of a PWR, four different manipulators are required, two for the closure head, one for the studs and one for the cylindrical shell and bottom closure. The use of the newly developed equipment, which naturally meets all the recommendations of the licensing authorities, allows for the automatic inspection of the components of primary circuit of nuclear power stations and the thus helps to substantially decrease the radiation exposure of the personnel. All the manipulators and their control consoles were designed and manufactured by M.A.N., Nuremberg while the ultrasonic electronic system was developed by Krautkramer, Cologne

Energy- and value added services in the electric power market in Sweden; Energi- och mervaerdestjaenster paa elmarknaden i Sverige

Energy Technology Data Exchange (ETDEWEB)

Matsson, Peter

2000-03-01

This report tries to give a comprehensive picture of the offerings of energy- and value added services on the deregulated Swedish electric power market. A compilation of the service offerings from some 50 electric utilities is given. Market movements within deregulated sectors are treated with special emphasis on the electric power business.

Morphological analysis of energy services: Paving the way to quality differentiation in the power sector

International Nuclear Information System (INIS)

Salah, Florian; Flath, Christoph M.; Schuller, Alexander; Will, Christian; Weinhardt, Christof

2017-01-01

The activation of the still predominantly passive demand side is necessary to further guarantee a stable power system in the short term and ensure capacity adequacy in the long run. A system with a high share of generators with nearly no marginal costs requires new services that facilitate transmitting the right economic signals to the system stakeholders. To this end we refine the notion of energy services and propose a framework to systematically design quality differentiated energy services for consumers. This approach facilitates a value-based economic assessment of energy services that deviates from the marginal-cost-paradigm. We further illustrate pricing options for these new energy service products and outline infrastructural needs and additional use case-specific product properties. Moreover, we discuss how the morphological approach can be formalised using a mathematical programming formulation and introduce a complexity measure that facilitates assessing potential adoption obstacles for end consumers. Additionally, we illustrate the practical applicability of these findings by using a prototypical implementation of a decision support system. To foster differentiated energy services, we recommend a more lenient regulatory regime lowering the barriers for new market entrants. - Highlights: • Activating the demand side is necessary to further guarantee a stable power system. • We refine the notion of energy services helping to tackle this obstacle. • A morphological box to design quality differentiated energy services is proposed. • We extend this framework by implementing a prototypical decision support system. • A more lenient regulatory regime is needed to foster differentiated energy services.

Should the service life of nuclear power plants be limited for technical reasons?

International Nuclear Information System (INIS)

Schomer, E.

1995-01-01

German nuclear power plant operating licenses take into account the fact that the design lifetime of the facilities is 40 years. The technological lifetime, however, is governed by actual ageing processes and operational burden. The service life of nuclear power plants can be extended by replacement of the steam generator and by repair or replacement of the reactor pressure vessel or parts thereof. Attention is also paid to the reactor protection systems. (J.B.). 8 figs

Valuation of Electric Power System Services and Technologies

Energy Technology Data Exchange (ETDEWEB)

Kintner-Meyer, Michael C. W. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Homer, Juliet S. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Balducci, Patrick J. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Weimar, Mark R. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

2017-08-01

Accurate valuation of existing and new technologies and grid services has been recognized to be important to stimulate investment in grid modernization. Clear, transparent, and accepted methods for estimating the total value (i.e., total benefits minus cost) of grid technologies and services are necessary for decision makers to make informed decisions. This applies to home owners interested in distributed energy technologies, as well as to service providers offering new demand response services, and utility executives evaluating best investment strategies to meet their service obligation. However, current valuation methods lack consistency, methodological rigor, and often the capabilities to identify and quantify multiple benefits of grid assets or new and innovative services. Distributed grid assets often have multiple benefits that are difficult to quantify because of the locational context in which they operate. The value is temporally, operationally, and spatially specific. It varies widely by distribution systems, transmission network topology, and the composition of the generation mix. The Electric Power Research Institute (EPRI) recently established a benefit-cost framework that proposes a process for estimating multiple benefits of distributed energy resources (DERs) and the associated cost. This document proposes an extension of this endeavor that offers a generalizable framework for valuation that quantifies the broad set of values for a wide range of technologies (including energy efficiency options, distributed resources, transmission, and generation) as well as policy options that affect all aspects of the entire generation and delivery system of the electricity infrastructure. The extension includes a comprehensive valuation framework of monetizable and non-monetizable benefits of new technologies and services beyond the traditional reliability objectives. The benefits are characterized into the following categories: sustainability, affordability, and

Power reactor services provided by the Penn State Radiation Science and Engineering Center

International Nuclear Information System (INIS)

Voth, M.H.; Jester, W.A.

1993-01-01

The power reactor industry emerged from extensive research and development performed at nonpower reactors (NPRs). As the industry matures, NPRs continue to support and enhance power reactor technology. With the closure of many government and private industry NPRS, there is an increasing call for the 33 universities with operating research reactors to provide the needed services. The Penn State Radiation Science and Engineering Center (RSEC) includes a 1-MW pool-type pulsing TRIGA reactor, a neutron beam laboratory with real-time neutron radiography equipment, hot cells with master-slave manipulators for remote handling of radioactive materials, a gamma-ray irradiation pool, a low-level radiation monitoring laboratory, and extensive equipment for radiation monitoring, dosimetry, and material properties determination. While equipment is heavily utilized in the instructional and academic research programs, significant time remains available for service work. Cost recovery for service work generates income for personnel, equipment maintenance, and facility improvements. With decreasing federal and state funding for educational programs, it is increasingly important that facilities be fully utilized to generate supplementary revenue. The following are examples of such work performed at the RSEC

75 FR 64303 - Vermont Marble Power, Division of Omya Inc.; Central Vermont Public Service Corporation; Notice...

Science.gov (United States)

2010-10-19

...-029; 2445-023; 2558-029] Vermont Marble Power, Division of Omya Inc.; Central Vermont Public Service... Soliciting Comments and Motions To Intervene October 12, 2010. On August 31, 2010, Vermont Marble Power... relicensing. Applicant Contacts: For transferor: Todd Allard, Operations Engineer Omya, Inc., Vermont Marble...

Life cycle assessment of fossil and biomass power generation chains. An analysis carried out for ALSTOM Power Services

Energy Technology Data Exchange (ETDEWEB)

Bauer, Ch.

2008-12-15

This final report issued by the Technology Assessment Department of the Paul Scherrer Institute (PSI) reports on the results of an analysis carried out on behalf of the Alstom Power Services company. Fossil and biomass chains as well as co-combustion power plants are assessed. The general objective of this analysis is an evaluation of specific as well as overall environmental burdens resulting from these different options for electricity production. The results obtained for fuel chains including hard coal, lignite, wood, natural gas and synthetic natural gas are discussed. An overall comparison is made and the conclusions drawn from the results of the analysis are presented.

Evaluation of aged concrete structures for continued service in nuclear power plants

International Nuclear Information System (INIS)

Naus, D.J.; Marchbanks, M.F.; Arndt, E.G.

1988-01-01

Results are summarized of a study on concrete component aging and its significance relative to continued service of nuclear power plants (NPPs) beyond the initial period for which they were granted operating licenses. Progress is presented of a second study being conducted to identify and provide acceptance criteria for structural safety issues which the USNRC staff will need to address when applications are submitted for continued service of NPPs. Major activities under this program include: development of a materials property data base, establishment of structural component assessment and repair procedures, and development of a methodology for determination of structural reliability

Activities in Support of Continuing the Service of Nuclear Power Plant Safety-Related Concrete Structures

International Nuclear Information System (INIS)

Naus, Dan J.

2010-01-01

Nuclear power plant concrete structures are described. In-service inspection and testing requirements in the U.S. are summarized. The license renewal process in the U.S. is outlined and its current status provided. Operating experience related to performance of the concrete structures is presented. Basic components of a program to manage aging of the concrete structures are identified and described: degradation mechanisms, damage models, and material performance; assessment and remediation (i.e., component selection, in-service inspection, non-destructive examinations, and remedial actions); and estimation of performance at present or some future point in time (i.e., application of structural reliability theory to the design and optimization of in-service inspection/maintenance strategies, and determination of the effects of degradation on plant risk). Finally, areas are noted where additional research would be of benefit to aging management of nuclear power plant concrete structures.

Large-scale data analysis of power grid resilience across multiple US service regions

Science.gov (United States)

Ji, Chuanyi; Wei, Yun; Mei, Henry; Calzada, Jorge; Carey, Matthew; Church, Steve; Hayes, Timothy; Nugent, Brian; Stella, Gregory; Wallace, Matthew; White, Joe; Wilcox, Robert

2016-05-01

Severe weather events frequently result in large-scale power failures, affecting millions of people for extended durations. However, the lack of comprehensive, detailed failure and recovery data has impeded large-scale resilience studies. Here, we analyse data from four major service regions representing Upstate New York during Super Storm Sandy and daily operations. Using non-stationary spatiotemporal random processes that relate infrastructural failures to recoveries and cost, our data analysis shows that local power failures have a disproportionally large non-local impact on people (that is, the top 20% of failures interrupted 84% of services to customers). A large number (89%) of small failures, represented by the bottom 34% of customers and commonplace devices, resulted in 56% of the total cost of 28 million customer interruption hours. Our study shows that extreme weather does not cause, but rather exacerbates, existing vulnerabilities, which are obscured in daily operations.

TVA nuclear power: Management of the nuclear program through personal services contracts

International Nuclear Information System (INIS)

1987-01-01

Mr. Steven White, a retired admiral, is serving as manager of the TVA Office of Nuclear Power. GAO previously concluded that Mr. White's retention under contractual arrangements constituted the improper use of a personal services contract and represented a circumvention of the statutory ceiling on salary payments to TVA employees. This report finds that Mr. White's rate of pay is within the range of the salaries paid by a sample of nonfederal utilities to their top executives and is over two and a half times the average salary paid to executives who hold positions which appear to have responsibility for managing the utilities' power or nuclear power operations. GAO also found that (1) TVA's Office of Nuclear Power has employed an additional 25 persons since 1986 under arrangements similar to the employing arrangements of Mr. White and (2) TVA's Nuclear Safety Review staff no longer reports directly to the TVA Board of Directors and General Manager. It has relocated from Knoxville, Tennessee to Chattanooga, Tennessee

Field services experiences

International Nuclear Information System (INIS)

Colflesh, J.A.; Kruse, P.W.; Merluzzi, R.A.

1985-01-01

Combustion Engineering (C-E) is a large diversified manufacturer of products and services for the energy field. At this time, C-E has supplied the nuclear steam supply systems for eleven operating nuclear power plants with two additional units currently undergoing start-up testing. The focus of C-E's commitment in the nuclear power plant services area is the Nuclear Services organization within the Nuclear Power Systems Division. The Nuclear Services organization provides services on a timely cost efficient basis; and dedicates resources to developing new products and services which are truly responsive to the needs of operating power plants world wide. In the paper, C-E's capabilities and experience in the field of nuclear services are described. Highlighted are our capabilities in the areas of transition management services, operating services and engineering services

A Non-Cooperative Approach to the Joint Subcarrier and Power Allocation Problem in Multi-Service SCFDMA Networks

Directory of Open Access Journals (Sweden)

E. E. Tsiropoulou

2016-06-01

Full Text Available In this paper a joint resource allocation problem is studied in a multi-service Single Carrier FDMA (SC-FDMA wireless network. Mobile users request various services with different Quality of Service (QoS characteristics and they determine in a distributed and non-cooperative manner a joint subcarrier and power allocation towards fulfilling their QoS prerequisites. Initially, a well-designed utility function is formulated to appropriately represent users’ diverse QoS prerequisites with respect to their requested service. The subcarriers allocation problem is solved based on a multilateral bargaining model, where users are able to select different discount factors to enter the bargaining game, thus better expressing their different needs in system resources with respect to their requested service. The subcarriers mapping is realized based either on the localized SC-FDMA method where the subcarriers are sequentially allocated to the users or the distributed SC-FDMA via considering the maximum channel gain policy, where each subcarrier is allocated to the user with the maximum channel gain. Given the subcarriers assignment, an optimization problem with respect to users’ uplink transmission power is formulated and solved, in order to determine the optimal power allocation per subcarrier assigned to each user. Finally, the performance of the proposed framework is evaluated via modeling and simulation and extensive numerical results are presented.

Methodologies for assessing the use-phase power consumption and greenhouse gas emissions of telecommunications network services.

Science.gov (United States)

Chan, Chien A; Gygax, André F; Wong, Elaine; Leckie, Christopher A; Nirmalathas, Ampalavanapillai; Kilper, Daniel C

2013-01-02

Internet traffic has grown rapidly in recent years and is expected to continue to expand significantly over the next decade. Consequently, the resulting greenhouse gas (GHG) emissions of telecommunications service-supporting infrastructures have become an important issue. In this study, we develop a set of models for assessing the use-phase power consumption and carbon dioxide emissions of telecom network services to help telecom providers gain a better understanding of the GHG emissions associated with the energy required for their networks and services. Due to the fact that measuring the power consumption and traffic in a telecom network is a challenging task, these models utilize different granularities of available network information. As the granularity of the network measurement information decreases, the corresponding models have the potential to produce larger estimation errors. Therefore, we examine the accuracy of these models under various network scenarios using two approaches: (i) a sensitivity analysis through simulations and (ii) a case study of a deployed network. Both approaches show that the accuracy of the models depends on the network size, the total amount of network service traffic (i.e., for the service under assessment), and the number of network nodes used to process the service.

Internal services simulation control in 220/110kV power transformer station Mintia

Science.gov (United States)

Ciulica, D.; Rob, R.

2018-01-01

The main objectives in developing the electric transport and distribution networks infrastructure are satisfying the electric energy demand, ensuring the continuity of supply to customers, minimizing electricity losses in the transmission and distribution networks of public interest. This paper presents simulations in functioning of the internal services system 400/230 V ac in the 220/110 kV power transformer station Mintia. Using simulations in Visual Basic, the following premises are taken into consideration. All the ac consumers of the 220/110 kV power transformer station Mintia will be supplied by three 400/230 V transformers for internal services which can mutual reserve. In case of damaging at one transformer, the others are able to assume the entire consumption using automatic release of reserves. The simulation program studies three variants in which the continuity of supply to customers are ensured. As well, by simulations, all the functioning situations are analyzed in detail.

Evaluation of aged concrete structures for continued service in nuclear power plants

International Nuclear Information System (INIS)

Naus, D.J.; Marchbanks, M.F.; Arndt, E.G.

1988-01-01

Results are summarized of a study on concrete component aging and its significance relative to continued service of nuclear power plants (NPPs) beyond the initial period for which they were granted operating licenses. Progress is presented of a second study being conducted to identify and provide acceptance criteria for structural safety issues which the USNRC staff will need to address when applications are submitted for continued service of NPPs. Major activities under this program include: development of a materials property data base, establishment of structural component assessment and repair procedures, and development of a methodology for determination of structural reliability. 19 refs., 5 figs., 3 tabs

In-service materials testing of selected components of unit 1 and 2 of V-1 nuclear power plant

International Nuclear Information System (INIS)

Cintula, J.

1982-01-01

The task of in-service nondestructive testing of nuclear installations is to confirm that the state of base material and welded joints has not changed owing to mechanical, thermal or radiation stress. Under the regulations of safe operation the first in-service inspection of all components of a WWER 440 reactor must be carried out after 15,000 to 2O,00O operating hours at the latest. Further in-service inspections are repeated after 30,000 hours (pressure vessels) and 40,000 hours (the main steam piping and the feedwater piping). Proceeding from experience gained so far, intervals are suggested for in-service checks of the other components of the V-1 nuclear power plant. Also briefly described are the main nondestructive methods used for such checks at this power plant. (Z.M.)

Examples of in-service inspections and typical maintenance schedule for low-power research reactors

International Nuclear Information System (INIS)

Boeck, H.

1997-01-01

In-service inspection methods for low-power research reactors are described which have been developed during the past 37 years of the operation of the TRIGA reactor Vienna. Special tools have been developed during this period and their application for maintenance and in-serve inspection is discussed. Two practical in-service inspections at a TRIGA reactor and at a MTR reactor are presented. Further a typical maintenance plan for a TRIGA reactor is listed in the annex. (author)

Modeling Financial Innovation and Economic Growth: Why the Financial Sector Matters to the Real Economy

Science.gov (United States)

Chou, Yuan K.

2007-01-01

The author devises a simple way of incorporating the financial sector into a growth model that is pedagogically useful. Financial innovation raises the efficiency of financial intermediation by increasing the variety of financial products and services, resulting in improved matching of the needs of individual savers with those of firms raising…

Reliability-based service life assessment of concrete structures in nuclear power plants: optimum inspection and repair

International Nuclear Information System (INIS)

Ellingwood, B.R.; Mori, Y.

1995-01-01

Research is being conducted to address aging management of safety-related reinforced concrete structures in nuclear power plants (NPPs). Documentation is being prepared to identify potential structural safety issues and to recommend criteria for use in evaluating reinforced concrete structures for continued service. Time-dependent reliability analysis provides the framework and quantitative tools for the condition assessment. The role of in-service inspection and repair in ensuring continued reliability in-service is examined. (author). 19 refs., 4 figs

78 FR 63177 - Order on Voluntary Remand and Clarifying Policy on Filing of Reactive Power Service Rate...

Science.gov (United States)

2013-10-23

... the obligation to follow a voltage schedule.'' \\19\\ The Commission distinguished Hot Spring Power Co..., to explore the mechanics of public utilities filing reactive power rate schedules for which there is...'' jurisdictional service and, accordingly, must be filed for Commission review); Sulphur Springs Valley Elec. Coop...

Overview of Activities in U.S. Related to Continued Service of Nuclear Power Plant Concrete Structures

International Nuclear Information System (INIS)

Naus, Dan J.

2011-01-01

Safety-related nuclear power plant concrete structures are described and commentary on continued service assessments of these structures is provided. In-service inspection and testing requirements in the U.S. are summarized. The license renewal process in the U.S. is outlined and its current status noted. A summary of operating experience related to U.S. nuclear power plant concrete structures is presented. Several candidate areas are identified where additional research would be of benefit to aging management of NPP concrete structures. Finally current ORNL activities related to aging-management of concrete structures are outlined: development of operating experience database, application of structural reliability theory, and compilation of elevated temperature concrete material property data and information.

Socially-pedagogical terms of preparation of senior pupils to service in Military Powers of Ukraine

Directory of Open Access Journals (Sweden)

Ryutin V.V.

2010-02-01

Full Text Available The problem of preparation of senior pupils is investigational to military service. The social pedagogical terms of preparation of senior pupils are certain to military service. Adequate psychological pedagogical measures are developed on overcoming of tendency of subzero perception by the senior pupils of service in Military Powers of Ukraine. Basic directions the personal interest are rotined in harmonious, valuable psychical and physical development of the Ukrainian young people. The national orientation of military patriotic education of senior pupils is marked. It is based on ethnology and regional principles of education, respect to history of the people and state.

In-service diagnostic systems of steam generators, pressurizers and other components of WWER type nuclear power plants

International Nuclear Information System (INIS)

Matal, O.

1988-01-01

A detailed description is presented of the systems of vibration inspections and systems of determining residual service life, implemented as in-service diagnostic systems for steam generators and pressurizers at the Dukovany nuclear power plant. Low temperature accelerometers of the KD or KS type and high temperature accelerometers CA 91 are used as vibration sensors. In the system of vibration inspection a total of 64 vibration measuring chains of Czechoslovak make and design are installed in the power plant. Systems are being built for determining residual service life which consist of 75 special chains for heat monitoring with thermocouples installed on selected assemblies of the steam generators and the pressurizers serving to monitor and evaluate heat stress. Also included in the system for determining residual service life are 16 routes for water withdrawal from steam generators. Their purpose is to make in-service determinations of places of biggest concentrations of impurities in secondary water, to determine the biggest local chemical exposure of primary collector and heat exchange tube materials and to optimize the size and place of leachate withdrawal. (Z.M.). 2 figs., 2 tabs., 15 refs

Microgrid and Plug in Electric Vehicle (PEV) with Vehicle to Grid (V2G) Power Services Capability (Briefing Charts)

Science.gov (United States)

2015-09-01

for public release Microgrid and Plug in Electric Vehicle (PEV) with Vehicle to Grid (V2G) Power Services Capability Shukri Kazbour PEV Lead Engineer...collection of information if it does not display a currently valid OMB control number. 1. REPORT DATE 01 SEP 2015 2. REPORT TYPE 3. DATES COVERED...00-00-2015 to 00-00-2015 4. TITLE AND SUBTITLE Microgrid and Plug in Electric Vehicle (PEV) with Vehicle to Grid (V2G) Power Services Capability

Activities at ORNL in support of continuing the service of nuclear power plant concrete structures

International Nuclear Information System (INIS)

Naus, D.J.

2012-01-01

In general, nuclear power plant concrete structure's performance has been very good; however, aging of concrete structures occurs with the passage of time that can potentially result in degradation if its effects are not controlled. Safety-related nuclear power plant concrete structures are described. In-service inspection and testing requirements in the U.S. are summarized. The interaction of the license renewal process and concrete structures is noted. A summary of operating experience related to aging of nuclear power plant concrete structures is provided. Several candidate areas are identified where additional research would be beneficial for aging management of nuclear power plant concrete structures. Finally, an update on recent activities at Oak Ridge National Laboratory related to aging management of nuclear power plant concrete structures is provided. (author)

Opportunities for ice storage to provide ancillary services to power grids incorporating wind turbine generation

Science.gov (United States)

Finley, Christopher

Power generation using wind turbines increases the electrical system balancing, regulation and ramp rate requirements due to the minute to minute variability in wind speed and the difficulty in accurately forecasting wind speeds. The addition of thermal energy storage, such as ice storage, to a building's space cooling equipment increases the operational flexibility of the equipment by allowing the owner to choose when the chiller is run. The ability of the building owner to increase the power demand from the chiller (e.g. make ice) or to decrease the power demand (e.g. melt ice) to provide electrical system ancillary services was evaluated.

Operation and Management of Thermostatically Controlled Loads for Providing Regulation Services to Power Grids

Science.gov (United States)

Vanouni, Maziar

The notion of demand-side participation in power systems operation and control is on the verge of realization because of the advancement in the required technologies an tools like communications, smart meters, sensor networks, large data management techniques, large scale optimization method, etc. Therefore, demand-response (DR) programs can be one of the prosperous solutions to accommodate part of the increasing demand for load balancing services which is brought about by the high penetration of intermittent renewable energies in power systems. This dissertation studies different aspects of the DR programs that utilized the thermostatically controlled loads (TCLs) to provide load balancing services. The importance of TCLs among the other loads lie on their flexibility in power consumption pattern while the customer/end-user comfort is not (or minimally) impacted. Chapter 2 discussed a previously presented direct load control (DLC) to control the power consumption of aggregated TCLs. The DLC method performs a power tracking control and based on central approach where a central controller broadcasts the control command to the dispersed TCLs to toggle them on/off. The central controller receives measurement feedback from the TCLs once per couple of minutes to run a successful forecast process. The performance evaluation criteria to evaluate the load balancing service provided by the TCLs are presented. The results are discussed under different scenarios and situation. The numerical results show the proper performance of the DLC method. This DLC method is used as the control method in all the studies in this dissertation. Chapter 3 presents performance improvements for the original method in Chapter 2 by communicating two more pieces of information called forecast parameters (FPs). Communicating improves the forecast process in the DLC and hence, both performance accuracy and the amount of tear-and-wear imposed on the TCLs. Chapter 4 formulates a stochastic

76 FR 77963 - Oglethorpe Power Corporation; Proposed Biomass Power Plant

Science.gov (United States)

2011-12-15

... Service Oglethorpe Power Corporation; Proposed Biomass Power Plant AGENCY: Rural Utilities Service, USDA... related to possible financial assistance to Oglethorpe Power Corporation's (Oglethorpe) for the... online at the following Web site: http://www.rurdev.usda.gov/UWP-OglethorpePower.html and at the: Warren...

77 FR 38796 - Alabama Power Company; Holt Hydroelectric Project; Notice of Revised Restricted Service List for...

Science.gov (United States)

2012-06-29

... Power Company; Holt Hydroelectric Project; Notice of Revised Restricted Service List for a Programmatic... Hydroelectric Project No. 2203. The programmatic agreement, when executed by the Commission, the Alabama SHPO...

Ancillary services and the integration of substantial quantities of wind power

DEFF Research Database (Denmark)

Østergaard, Poul Alberg

2006-01-01

. Ballerup: Elkraft System; 2004]. At the same time, Denmark has other forms of distributed generation, e.g., extensive cogeneration of heat and power (CHP) plants for district heating or for covering industrial heat demands. This results in a high fuel-efficiency but also in a technically complex energy......Denmark has the World’s highest penetration of grid connected wind power in electricity generation with a share of 15.0% of total domestic demand in 2002 [Danish Energy Authority. Rapport fra arbejdsgruppen om kraftvarme- og VE-elektricitet. Bilagsrapport. Copenhagen: Danish Energy Authority; 2001...... as the potential impact of heat pumps used for district heating and installed for integration purposes. The analyses are made with particular focus on grid stability and delivery of ancillary services (required to control voltage and frequency) and demonstrate that it is possible to accommodate 50% or more wind...

Life extension, power upgrade, and return to service work for Pickering NGS and other PWR and CANDU plants

International Nuclear Information System (INIS)

Millman, J.; Idvorian, N.; Schneider, W.

2002-01-01

Work on life extension, power upgrade and return to service has been performed and is in progress for a number of PWR and CANDU plants. For PWR plants, power upgrade work has been done for the new replacement steam generators in several cases. This work consists of redoing the formal equipment qualification analysis and reports for the uprated operating conditions to support the application for license adjustment. Life extension assessments have been performed for several CANDU plants. These are highly detailed assessments in which the particular steam generator is reassessed part by part as to the ability of each to sustain full life operation and also extended life operation. Return to service work for Pickering NGSA specifically has included this type of assessment and also specific repair, cleaning and retrofit activities including secondary side inspection, waterlancing, divider plate repair, eddy current inspection, etc. Steam generator modifications and retrofit work have been performed in a number of cases. The paper discusses various life extension, power upgrade, equipment modification and return to service activities all of which are part of the renewed drive in the industry to realise the full potential of nuclear plants by getting more and better performance from the extended service of existing plants. (author)

Global power production scenarios to 2100 and the dual role of forests: accelerated climate damage or regulating and provisioning ecosystem services?

DEFF Research Database (Denmark)

Callesen, Ingeborg

The worlds' electrical power production is depending on the current energy infrastructure, and future investments in new power supply facilities using renewable and non-renewable energy sources. Continued growth in power production in the 21st century will cause global environmental change (GEC......). GEC with climate change as an important driver will affect the environment and the economy in multiple ways that can be summarized as losses of biodiversity and changing ecosystem services (ES), but with very diverse temporal and spatial impacts. In a simple global growth model for power production......, including non-renewable and renewable energy sources, the potential role of forest biomass is investigated. The demands for forest ecosystem services imposed by the global power production are assessed in the present study. Three global power supply scenarios to 2050 with different emphasis...

A red cell preservation strategy reduces postoperative transfusions in pediatric heart surgery patients.

Science.gov (United States)

Nathan, Meena; Tishler, Brielle; Gauvreau, Kimberlee; Matte, Gregory S; Howe, Robert J; Durham, Linda; Boyle, Sharon; Mathieu, Derek; Fynn-Thompson, Francis; DiNardo, James A; Ibla, Juan C

2018-03-25

Blood transfusion has well-documented adverse effects. As part of a blood conservation initiative at our center, we began routine use of cell saver for all congenital heart surgery performed on cardiopulmonary bypass since 2014. This study aimed to compare transfusion rates prior to, and in the first and second year after this initiative. We hypothesized that cell saver use would decrease transfusion requirements in second year after use of the cell saver compared to the pre cell saver group. Consecutive patients under 18 years undergoing congenital heart surgery on cardiopulmonary bypass were retrospectively analyzed as 3 one-year cohorts defined above. We excluded patients who required mechanical support or reoperation at index admission. Baseline characteristics, and use of blood intraoperatively and postoperatively were compared between groups. The 3 groups had similar baseline characteristics. Blood use was significantly lower in year 2 after cell saver initiation as compared to the pre cell saver group both intra- and postoperatively. The median difference in volume of intraoperative blood transfusion was lower by 138 mL/m 2 (-266, -10 mL/m 2 ) in year 2 when compared to the pre cell saver group. Similarly, the proportion of subjects requiring red blood cell transfusion postoperatively on day of surgery was lower by 10% (-15%, -6%). Standardized use of cell saver significantly decreased perioperative blood use in children undergoing cardiac surgery at our center. A risk-adjusted transfusion threshold for children undergoing heart surgery needs to be developed to further decrease exposure to blood products and associated costs. © 2018 John Wiley & Sons Ltd.

Chemical cleaning the service water system at a nuclear power plant

International Nuclear Information System (INIS)

Brice, T.O.; Glover, W.A.

1994-01-01

Chemical cleaning a large cooling water system in a nuclear power plant presented many unique problems. The selection, qualification, and performance of the cleaning process were done using a phased approach. The piping was inspected to determine the extent of the problem. Deposit samples were removed from the service water system pipe and tested in the laboratory to determine the most effective cleaning solvent for deposit removal. An engineering study was performed to define the design parameters required to implement the system-wide chemical cleaning

In-service inspection of nuclear power plants

International Nuclear Information System (INIS)

1991-01-01

This Manual is intended to provide more comprehensive considerations on the management, organization, preparation, improvement and implementation of in-service inspection activities and the related surveillance. It also gives illustrative examples of good practices and recommendations from operating and other organizations that are consistent with the requirements and recommendations of the Code and Safety Guides. The Manual is directed primarily towards plant management. This Manual should be used in conjunction with the Code and the Safety Guides, in particular with IAEA Safety Series Nos. 50-C-O, 50-SG-O2, 50-SG-05, 50-SG-07, 50-SG-08 and 50-SG-D1, which contain recommendations of a general character about maintenance activities and radiation protection in an operating power plant, and with the 'Manual on the Maintenance of Systems and Components Important to Safety'. This Manual is divided into four technical sections. The first introduces the purpose, structure and main requirements of the programme. The second section describes constituents of the programme, recommending its scope, scheduling, acceptance standards and documentation of results. The following section goes into details of the inspection programme's contents, such as the selection of components, inspection locations, defect types, applicable techniques and procedures, and the evaluation of results. The last section specifies recommended methods and techniques for inspection, such as visual, ultrasonic, eddy current, magnetic particle and others. This main part of the Manual is complemented by a number of annexes which reproduce actual national examples of established procedures, ISI programme parts, acceptance standards, personnel training programmes, testing techniques and other aspects of in-service inspection, illustrating practical implementation of the recommendations of the Manual

76 FR 20624 - Oglethorpe Power Corporation: Proposed Biomass Power Plant

Science.gov (United States)

2011-04-13

... DEPARTMENT OF AGRICULTURE Rural Utilities Service Oglethorpe Power Corporation: Proposed Biomass Power Plant AGENCY: Rural Utilities Service, USDA. ACTION: Notice of Availability of a Draft... financial assistance to Oglethorpe Power Corporation (Oglethorpe) for the construction of a 100 megawatt (MW...

Opening, at the Senate, of the discussion on the public service of the electric power; Ouverture du debat devant le Senat sur le service public de l'electricite

Energy Technology Data Exchange (ETDEWEB)

NONE

2000-01-01

This paper presents a chronological account of the talks presented since october 1999 and concerning the public service of the electrical power. The author criticizes the different law articles law of the law project and the government policy in this domain. In particular he analyses:1) the public service missions; 2) the part of EDF as an integrated enterprise of production, transport and distribution of electric power; 3) the public policy of the energy; 4) the gradual and controlled opening of the market to the competition. (A.L.B.)

Grassroots Supercomputing

CERN Multimedia

Buchanan, Mark

2005-01-01

What started out as a way for SETI to plow through its piles or radio-signal data from deep space has turned into a powerful research tool as computer users acrosse the globe donate their screen-saver time to projects as diverse as climate-change prediction, gravitational-wave searches, and protein folding (4 pages)

LHC@home takes centre stage : some of the people behind the CPSS and LHC@home programs

CERN Multimedia

maximilien Brice

2005-01-01

From left to right: Frank Schmidt (AB), Jukka Klem (Helsinki Institute of Physics), Andreas Wagner (IT), Eric McIntosh (IT) and Ben Segal (IT). The program of LHC@home, which aims to use the computing power of PCs when the screen saver is activated, is being relauched as part of the World Year of Physics.

"It's Changed Everything": Voices of Veterans in the Veteran-Directed Home and Community Based Services Program.

Science.gov (United States)

Mahoney, Ellen K; Milliken, Aimee; Mahoney, Kevin J; Edwards-Orr, Merle; Willis, Danny G

2018-04-05

The purpose of this study was to understand the value and impact of the Veteran-Directed Home and Community Based Services program (VD-HCBS) on Veterans' lives in their own voices. Focus groups and individual interviews by telephone were conducted to elicit participant perspectives on what was most meaningful, and what difference VD-HCBS made in their lives. Transcripts were analyzed using content analysis. The sample included 21 Veterans, with a mean age of 66±14, enrolled in VD-HCBS an average of 20.8 months. All were at risk of institutional placement based on their level of disability. Five major categories captured the information provided by participants: What a Difference Choice Makes; I'm a Person!; It's a Home-Saver; Coming Back to Life; and Keeping Me Healthy & Safe. Participants described the program as life changing. This study is the first time that Veterans themselves have identified the ways in which VD-HCBS impacted their lives, uncovering the mechanisms underlying positive outcomes. These categories revealed new ways of understanding VD-HCBS as an innovative approach to meeting the person-centered needs of Veterans wishing to remain at home, while experiencing quality care and leading meaningful lives, areas identified as priorities for improving long term services and supports.

Design, development and deployment of public service photovoltaic power/load systems for the Gabonese Republic

Science.gov (United States)

Kaszeta, William J.

1987-01-01

Five different types of public service photovoltaic power/load systems installed in the Gabonese Republic are discussed. The village settings, the systems, performance results and some problems encountered are described. Most of the systems performed well, but some of the systems had problems due to failure of components or installation errors. The project was reasonably successful in collecting and reporting data for system performance evaluation that will be useful for guiding officials and system designers involved in village power applications in developing countries.

RIBA Project - Risk-Informed approach for In-Service Inspection of Nuclear Power Plant Components. Project summary

International Nuclear Information System (INIS)

Lidbury, D.; Smith, G.

2001-12-01

The need for a European review of a Risk-Informed Approach for In-Service Inspection of Nuclear Power Plant Components (RIBA) was identified in 1998. This was as a priority item in the programme of activities conducted in the framework of the Council Resolutions of 22 July 1975 and of 18 June 1992 on the Technological Problems of Nuclear Safety. The RIBA Project was established in November 1999 as a 24-month Study Contract funded by the European Commission within the frame of the former DG XI WGCS (Working Group on Codes and Standards). The Study Contract was subsequently managed for the EC by DG TREN. The participants in RIBA were Serco Assurance (project coordinator), Ringhals AB, EDF, Tecnatom SA and Westinghouse Electric Europe. The work is presented in a summary report with the detailed results contained in three companion reports as follows: main conclusions and recommendations, Review of Existing Risk-Informed Methodologies, A Comparative Study of Risk-Informed In-Service Inspection Applications, Conclusions and Recommendations for Risk-Informed in-service inspection methodology applied to Nuclear Power Plants in Europe. (author)

Autonomous power networks based power system

International Nuclear Information System (INIS)

Jokic, A.; Van den Bosch, P.P.J.

2006-01-01

This paper presented the concept of autonomous networks to cope with this increased complexity in power systems while enhancing market-based operation. The operation of future power systems will be more challenging and demanding than present systems because of increased uncertainties, less inertia in the system, replacement of centralized coordinating activities by decentralized parties and the reliance on dynamic markets for both power balancing and system reliability. An autonomous network includes the aggregation of networked producers and consumers in a relatively small area with respect to the overall system. The operation of an autonomous network is coordinated and controlled with one central unit acting as an interface between internal producers/consumers and the rest of the power system. In this study, the power balance problem and system reliability through provision of ancillary services was formulated as an optimization problem for the overall autonomous networks based power system. This paper described the simulation of an optimal autonomous network dispatching in day ahead markets, based on predicted spot prices for real power, and two ancillary services. It was concluded that large changes occur in a power systems structure and operation, most of them adding to the uncertainty and complexity of the system. The introduced concept of an autonomous power network-based power system was shown to be a realistic and consistent approach to formulate and operate a market-based dispatch of both power and ancillary services. 9 refs., 4 figs

Operating experience feedback on lose of offsite power supply for nuclear power plant

International Nuclear Information System (INIS)

Jiao Feng; Hou Qinmai; Che Shuwei

2013-01-01

The function of the service power system of a nuclear power plant is to provide safe and reliable power supply for the nuclear power plant facilities. The safety of nuclear power plant power supply is essential for nuclear safety. The serious accident of Fukushima Daiichi nuclear power plant occurred due to loss of service power and the ultimate heat sink. The service power system has two independent offsite power supplies as working power and auxiliary power. This article collected events of loss of offsite power supply in operating nuclear power plants at home and abroad, and analyzed the plant status and cause of loss of offsite power supply events, and proposed improvement measures for dealing with loss of offsite power supply. (authors)

POSSPOW: Possible Power of Offshore Wind Power Plants

DEFF Research Database (Denmark)

Giebel, Gregor; Göçmen, Tuhfe; Sørensen, Poul Ejnar

2013-01-01

Introduction In recent years, the very large offshore wind farms were designed as wind power plants, including possibilities to contribute to the stability of the grid by offering grid services (also called ancillary services). One of those services is reserve power, which is achieved by down......-regulating the wind farm from its maximum possible power. The power can be ramped up quite quickly, but the influence of wakes makes it difficult to assess the exact amount of down-regulation available to sell. Currently, Transmission System Operators (TSOs) have no real way to determine exactly the possible power...... will be verified on some of the large offshore wind farms owned by Vattenfall, and possibly in a DONG Energy wind farm too. Dedicated experiments to the wind flow in large offshore wind farms are planned. Main body of abstract Modern wind turbines have a SCADA signal called possible power. In normal operation...

Expected returns from a tax on nuclear fuel elements in the context of longer service lives of German nuclear power plants

International Nuclear Information System (INIS)

Kondziella, Hendrik; Bruckner, Thomas

2010-01-01

To what extent will the fuel element tax introduced by the German government in combination with the longer service life of nuclear power stations reduce the profits of public utilities? A qualitative assessment suggests that the tax will not equal the full profits. Using an electricity market model, various scenarios can be calculated for an eight-year prolongation of the residual service life of existing nuclear power plants. (orig.)

Are Wind Power and Hydropower Complements or Competitors? An Analysis of Ecosystem Service Constraints in the Roanoke Basin

Science.gov (United States)

Reed, P. M.; Fernandez, A. R.; Blumsack, S.

2011-12-01

Hydropower can provide inexpensive, flexible fill-in power to compensate for intermittent renewable generation. Policies for hydropower dams maintain multiple services beyond electric generation, including environmental protection, flood control and recreation. We model the decision of a hydroelectric generator to shift some of its power production capacity away from the day-ahead energy market into a "wind-following" service that smoothes the intermittent production of wind turbines. Offering such a service imposes both private and social opportunity costs. Since fluctuations in wind energy output are not perfectly correlated with day-ahead energy prices, a wind-following service will necessarily affect generator revenues. Seasonal wind patterns produce conflicts with the goal of managing rivers for "ecosystem services" - the maintenance or enhancement of downstream ecosystems. We illustrate our decision model using the Kerr Dam in PJM's territory in North Carolina. We simulate the operation of Kerr Dam over a three-year period that features hydrologic variability from normal water years to extreme drought conditions. We use an optimization framework to estimate reservation prices for Kerr Dam offering wind-following services in the PJM market. Wind-following may be profitable for Kerr Dam at low capacity levels during some time periods if ecosystems services are neglected and if side payments, or reserves-type payments, are provided. Wind-following with ecosystem services yields revenue losses that typically cannot be recovered with reserves market payments. Water release patterns are inconsistent with ecosystem-services goals when Kerr Dam dedicates significant capacity to wind-following, particularly in drought years.

Business data processing in the service of quality and safety in nuclear power plant construction

International Nuclear Information System (INIS)

Chassignet, C.

1980-01-01

Construction of a nuclear power plant implies collection and correlation of several thousand items of information which must be identified and which must remain retrievable throughout the service life of the plant. The Framatome Corporation, which has one of the largest nuclear power plant construction programs in the world, therefore set up a processing and checking system for the documents containing this information. The author describes the functions and principles of this system (known as SHARAD), together with its technical data and its operation [fr

The selective application of quality assurance activities to nuclear power plant items and services

International Nuclear Information System (INIS)

Anderson, J.W.

1982-01-01

The definition of quality assurance and the criteria for a quality assurance programme that are contained in both national and international codes and standards provide the principle of selective application of quality assurance activities for cost-effective results. The effective implementation of this principle requires a systematic and disciplined methodology that should be established by or for the owner at the beginning of a nuclear power plant project. The methodology that has proven to be successful generally includes a uniform method of classifying plant items and services at their lowest level of unit assembly and using that classification in the selection of applicable quality assurance activities and the specification of appropriate requirements for those activities. The applicable quality assurance activities are those to be implemented by the organizations designing, manufacturing, installing and operating plant items or performing support services. The methods and techniques provided illustrate the methodology and are one way by which a nuclear power plant project may translate the principle into application in order to achieve the desired results. (author)

Beliefs concerning the reliability of nuclear power plant in-service inspections

International Nuclear Information System (INIS)

Kettunen, J.

1997-01-01

The aim of the study was to investigate belief systems held by the officials responsible for the planning and supervision of NDT operations within the Finnish nuclear industry. They were asked to express their opinions on (1) the reliability of NDT methods in general, (2) the factors influencing the reliability of in-service inspections, and (3) the degree of reliability of the current inspections operations conducted by means of NDT methods in the Finnish nuclear power plants. Another goal of the study was to assess the adequacy of officials' beliefs (or belief systems). The research data was collected by interviewing representatives from Finnish power companies (Imatran Voima Oy and Teollisuuden Voima Oy), independent inspection organisations, and the Finnish Centre for Radiation and Nuclear Safety (STUK). The adequacy of the beliefs expressed was assessed by means of the results obtained from international NDT reliability studies and on the basis of interviewees' own justification. (refs.)

Marketing and service activities of German power suppliers. Results of a recent investigation; Marketing- und Dienstleistungsktivitaeten der deutschen Stromversorger. Ergebnisse einer aktuellen Erhebung

Energy Technology Data Exchange (ETDEWEB)

Nickel, M. [Bereich Markt und Daten, Verband der Eiektrizitaetswirtschaft - VDEW - e.V., Berlin (Germany)

2006-07-03

Service activities have always played an important role for power suppliers. Facing the growing competitive environment, the enterprises' activities were given new directions, with more strength. The EU energy service regulation gives this subject even more importance. VDEW (Association of the Electricity Industry) has been regularly investigating the range of the services offered by the enterprises, for the last time by means of questionnaire in 2005. The findings give a general view of the marketing measures presently used by the enterprises and the services they offer. It was found out that services and special measures of customer care have kept their importance to customer binding and customer acquisition also in 2005. Services have always been of importance for power suppliers.

77 FR 28797 - Redundancy of Communications Systems: Backup Power Private Land Mobile Radio Services: Selection...

Science.gov (United States)

2012-05-16

... FEDERAL COMMUNICATIONS COMMISSION 47 CFR Parts 12 and 90 [DA 11-1838] Redundancy of Communications Systems: Backup Power Private Land Mobile Radio Services: Selection and Assignment of Frequencies, and Transition of the Upper 200 Channels in the 800 MHz Band to EA Licensing AGENCY: Federal Communications...

Commercialization of PV-powered pumping systems for use in utility PV service programs. Final report

Energy Technology Data Exchange (ETDEWEB)

NONE

1997-03-01

The project described in this report was a commercialization effort focused on cost-effective remote water pumping systems for use in utility-based photovoltaic (PV) service programs. The project combined a commercialization strategy tailored specifically for electric utilities with the development of a PV-powered pumping system that operates conventional ac pumps rather than relying on the more expensive and less reliable PV pumps on the market. By combining these two attributes, a project goal was established of creating sustained utility purchases of 250 PV-powered water pumping systems per year. The results of each of these tasks are presented in two parts contained in this Final Summary Report. The first part summarizes the results of the Photovoltaic Services Network (PSN) as a new business venture, while the second part summarizes the results of the Golden Photon system installations. Specifically, results and photographs from each of the system installations are presented in this latter part.

Vehicle-to-Grid Power in Danish Electric Power Systems

DEFF Research Database (Denmark)

Pillai, Jayakrishnan Radhakrishna; Bak-Jensen, Birgitte

2009-01-01

The integration of renewable energy systems is often constrained by the variable nature of their output. This demands for the services of storing the electricity generated from most of the renewable energy sources. Vehicle-to-grid (V2G) power could use the inherent energy storage of electric...... vehicles and its quick response time to balance and stabilize a power system with fluctuating power. This paper outlines the use of battery electric vehicles in supporting large-scale integration of renewable energy in the Danish electric power systems. The reserve power requirements for a high renewable...... energy penetration could be met by an amount of V2G based electric vehicles less than 10% of the total vehicle need in Denmark. The participation of electric vehicle in ancillary services would earn significant revenues to the vehicle owner. The power balancing services of electric vehicles...

A Study of the potency of construction service industries to support the first nuclear power plant construction in Indonesia

International Nuclear Information System (INIS)

Dharu Dewi; Sriyana

2008-01-01

The study was conducted to identify the potency of construction service industries to participate in nuclear power plant program in Indonesia. The potency is identified by evaluation results of national industries potency in some multinational construction service industries. The research methodology chosen was the survey method by sending questionnaires, visits to National industries, interview, and literature study. The data collection technique was sampling purposive. Data can be obtained from both primary and secondary data. The study results showed that the performance of construction service industries to support the NPP program must be increased through the selection of competent human resources, reliable equipment and an effective and efficient project management system, so that they can be expected to play necessary role in the nuclear power plant construction in Indonesia. (author)

Customized power quality service provided by converter interfaced microgrids — Voltage harmonics as a study case

DEFF Research Database (Denmark)

Meng, Lexuan; Chaudhary, Sanjay K.; Guerrero, Josep M.

2017-01-01

Customers may have different power quality requirements, thus, the economic operational strategy can try to provide them with distinctive quality levels as customized service. An optimization based method is proposed in this paper to realize this functionality, offering the possibility...

A COMPARISON OF THE SIT-AND-REACH TEST AND THE BACK-SAVER SIT-AND-REACH TEST IN UNIVERSITY STUDENTS

Directory of Open Access Journals (Sweden)

Pedro A. López-Miñarro

2009-03-01

Full Text Available This study compares the forward reach score, spine and pelvis postures, and hamstring criterion-related validity (concurrent validity between the sit-and-reach test (SR and the back-saver sit-and-reach test (BS. Seventy-six men (mean age ± SD: 23.45 ± 3.96 years and 67 women (mean age ± SD: 23.85 ± 5.36 years were asked to perform three trials of SR, BS left (BSl, right (BSr, and passive straight leg raise (PSLR right and left (hamstring criterion measure in a randomized order. The thoracic, lumbar, and pelvis angles (measured with a Uni-level inclinometer and forward reach scores were recorded once the subjects reached forward as far as possible without flexing the knees. A repeated measure ANOVA was performed followed by Bonferroni´s post hoc test. Pearson correlation coefficients were used to define the relationships between SR and BS scores with respect to PSLR. In both men and women, the thoracic angle in BS was significantly greater than in SR (p<0.016. However, no significant differences were found between the tests in lumbar angle, pelvic angle, and forward reach scores. The concurrent validity of the forward reach score as a measure of hamstring extensibility was moderate in women (0.66 0. 76 and weak to moderate in men (0.51 0.59. The concurrent validity was slightly higher in SR than in BS, although no significant differences between the correlation values were observed. There were significant differences in the thoracic angle between the SR and BS, but not in the forward reach score. There was no difference in concurrent validity between the two tests. However, the traditional SR was preferred because it reached better concurrent validity than the BS

Aging and service wear of air compressors and dryers in nuclear power plants

International Nuclear Information System (INIS)

Moyers, J.C.

1989-01-01

Compressed air systems and their associated compressors and dryers as incorporated in LWR power plants usually are not classified as safety related systems and components because their continued operation is not required to bring the plant to a safe shutdown condition. However, control air is a vital requirement for maintaining stable plant operation and its loss often results in a reactor trip and, on occasion, the actuation of engineered safety feature systems. Concerns caused by repeated instances of failures in air systems resulted in the high-priority ranking of Generic Issue No. 43, ''Reliability of Air Systems'' by the NRC. In support of the Nuclear Plant Aging Research (NPAR) Program, the Oak Ridge National Laboratory is carrying out a Phase I aging assessment of air compressors and dryers used in LWR power plants. The objectives of this study include: (1) determination of the types and ratings of equipment utilized in typical plants; (2) identification of aging and service wear stressors imposed on the machines; (3) evaluation of operating experience with the machines; (4) comparison of user and manufacturer-recommended inspection, surveillance, and monitoring (ISM) methods; and (5) the identification of any improved ISM methods that might lead to longer, more reliable, service. 2 refs

Power allocation and achievable data rate in spectrum-sharing channels under adaptive primary service outage constraints

KAUST Repository

Yang, Yuli; Aï ssa, Sonia

2012-01-01

used, provides an interference-tolerable zone. Based on this gap, a secondary user (SU) has an increased opportunity to access the licensed spectrum and to determine the transmit power it should use to keep the PU's quality-of-service (QoS) unaffected

Power allocation and achievable data rate in spectrum-sharing channels under adaptive primary service outage constraints

KAUST Repository

Yang, Yuli

2012-09-01

In this paper, we focus on a cognitive radio network where adaptive modulation is adopted in primary links. The gap between the primary user (PU)\\'s received signal-to-noise ratio (SNR) and the lower SNR boundary of the modulation mode that is being used, provides an interference-tolerable zone. Based on this gap, a secondary user (SU) has an increased opportunity to access the licensed spectrum and to determine the transmit power it should use to keep the PU\\'s quality-of-service (QoS) unaffected. However, since the SU cannot obtain perfect information on the PU\\'s received SNR, it has to choose an SNR point between the lower and upper boundaries of the PU\\'s current modulation mode as if this point were the real SNR received by the PU. Considering this issue, in order to quantify the effect of the SU\\'s transmissions on the PU\\'s QoS, we define the PU\\'s service outage probability and obtain its closed-form expressions by taking into account whether the peak transmit power constraint is imposed on the secondary\\'s transmission or not. Subsequently, we derive the SU\\'s achievable data rate in closed form for counterpart scenarios. Numerical results provided here quantify the relation between the PU\\'s service outage probability and the SU\\'s achievable data rate, which further demonstrate that the higher the peak transmit power a secondary transmitter can support, the better performance the cognitive radio network can achieve. © 2012 IEEE.

Improving the reliability of service-water systems at nuclear power plants

International Nuclear Information System (INIS)

Neitzel, D.A.; Johnson, K.I.; Daling, P.M.; Chang, T.Y.

1989-01-01

Fouling and clogging caused by sedimentation, corrosion, and the buildup of biological organisms is a persistent problem whenever raw water from a river, lake, or ocean is used as a heat exchange medium. The fouling caused by raw water cooling of service-water systems at nuclear power plants is a particular concern because of the potential for affecting safety-related heat exchangers and components, including online and redundant backup units. Open-cycle service-water, as discussed here, provide cooling to reactor support systems required during shutdown and emergency conditions and relate to those heat exchangers and components cooled directly by raw water. To resolve this issue, the NRC initiated a research program at the Pacific Northwest Laboratory (PNL), to study the conditions that allow fouling and to compare alternative surveillance and control programs to minimize service water system fouling. There is no single solution to biological, sediment, and corrosion fouling. An effective surveillance and control program must satisfy certain criteria to address major areas of the service-water system and the major fouling types. Three fouling program alternatives were developed. Value/impact (or cost/benefit) studies were performed on these three alternatives. The alternative chosen to be most cost effective is a baseline fouling program. It consists of two principal elements of a control program, continuous chlorination (for example during bivalve spawning seasons) and periodic flushing and flow testing of redundant and infrequently used cooling loops, to minimize flow blockage that would result from biofouling and sediment/corrosion product buildup. In addition, a surveillance program is recommended to regularly inspect the intake structure for macroscopic biological fouling organisms, sediment, and corrosion

Ahorre Energia: Consejos sobre el ahorro de dinero y energia en el hogar (Book)

Energy Technology Data Exchange (ETDEWEB)

2014-09-01

Learn how to save money with Energy Saver: Tips on Saving Money & Energy at Home, from the U.S. Department of Energy. The Energy Saver guide will help you reduce your monthly energy costs and live more efficiently. This guide takes you through the systems and appliances that consume the most energy in your home, and provides solutions to cut costs for you while saving the environment. The Energy Saver guide also includes transportation tips to help you save money at the pump.

Simulating Global AeroMACS Airport Ground Station Antenna Power Transmission Limits to Avoid Interference With Mobile Satellite Service Feeder Uplinks

Science.gov (United States)

Wilson, Jeffrey D.

2013-01-01

The Aeronautical Mobile Airport Communications System (AeroMACS), which is based upon the IEEE 802.16e mobile wireless standard, is expected to be implemented in the 5091 to 5150 MHz frequency band. As this band is also occupied by Mobile Satellite Service feeder uplinks, AeroMACS must be designed to avoid interference with this incumbent service. The aspects of AeroMACS operation that present potential interference are under analysis in order to enable the definition of standards that assure that such interference will be avoided. In this study, the cumulative interference power distribution at low Earth orbit from transmitters at global airports was simulated with the Visualyse Professional software. The dependence of the interference power on antenna distribution, gain patterns, duty cycle, and antenna tilt was simulated. As a function of these parameters, the simulation results are presented in terms of the limitations on transmitter power from global airports required to maintain the cumulative interference power under the established threshold.

High power communication satellites power systems study

International Nuclear Information System (INIS)

Josloff, A.T.; Peterson, J.R.

1994-01-01

This paper discusses a DOE-funded study to evaluate the commercial attractiveness of high power communication satellites and assesses the attributes of both conventional photovoltaic and reactor power systems. This study brings together a preeminent US Industry/Russian team to cooperate on the role of high power communication satellites in the rapidly expanding communications revolution. These high power satellites play a vital role in assuring availability of universally accessible, wide bandwidth communications, for high definition TV, super computer networks and other services. Satellites are ideally suited to provide the wide bandwidths and data rates required and are unique in the ability to provide services directly to the users. As new or relocated markets arise, satellites offer a flexibility that conventional distribution services cannot match, and it is no longer necessary to be near population centers to take advantage of the telecommunication revolution. The geopolitical implications of these substantially enhanced communications capabilities will be significant

Coordinated Control Scheme for Ancillary Services from Offshore Wind Power Plants to AC and DC Grids

DEFF Research Database (Denmark)

Sakamuri, Jayachandra N.; Altin, Müfit; Hansen, Anca Daniela

2016-01-01

This paper proposes a new approach of providing ancillary services to AC and DC grids from offshore wind power plants (OWPPs), connected through multi-terminal HVDC network. A coordinated control scheme where OWPP’s AC grid frequency modulated according to DC grid voltage variations is used...... to detect and provide the ancillary service requirements of both AC and DC grids, is proposed in this paper. In particular, control strategies for onshore frequency control, fault ridethrough support in the onshore grid, and DC grid voltage control are considered. The proposed control scheme involves only...

Blind test results - measure of incessant progress in personnel monitoring services at Kudankulam Nuclear Power Project

International Nuclear Information System (INIS)

Jashi, K.B.; Ashok Kumar, A.; Pandaram, P.

2018-01-01

Personnel Monitoring Services (PMS) at Thermoluminescent Dosimeter (TLD) laboratory, Kudankulam Nuclear Power Project (KKNPP) involve monitoring of about 1500 radiation workers of KKNPP for external radiation exposure on monthly basis. Quality assurance in PMS provides an overall estimate of accuracy which depends not only upon the dosimeter quality and reader performance but also on data interpretation, applicable software and the system. Therefore it measures the effectiveness of quality control mechanism. Blind test is an effective tool to check the performance of the processor without their knowledge during routine processing of the service cards

Application of risk-informed methods to in-service piping inspection in Framatome type nuclear power plants

International Nuclear Information System (INIS)

Kim, Jin Hoi; Lee, Jeong Seok; Yun, Eun Sub

2014-01-01

The Pressurized water reactor owners group (PWROG) developed and applied a risk-informed in-service inspection (RI-ISI) program, as an alternative to the existing ASME Section XI sampling inspection method. The RI-ISI programs enhance overall safety by focusing inspections of piping at high safety significance (HSS) locations where failure mechanisms are likely to be present. Additionally, the RI-ISI program can reduce nondestructive evaluation (NDE) exams, man-rem exposure for inspectors, and inspection time, among other benefits. The RI-ISI method of in-service piping inspection was applied to 3 units (KSNPs: Korea standard nuclear power plants) and is being deployed to the other units. In this paper, the results of RI-ISI for a Framatome type (France CPI) nuclear power plant are presented. It was concluded that application of RI-ISI to the plant could enhance and maintain plant safety, as well as provide the benefits of greater reliability.

High power communication satellites power systems study

Science.gov (United States)

Josloff, Allan T.; Peterson, Jerry R.

1995-01-01

This paper discusses a planned study to evaluate the commercial attractiveness of high power communication satellites and assesses the attributes of both conventional photovoltaic and reactor power systems. These high power satellites can play a vital role in assuring availability of universally accessible, wide bandwidth communications, for high definition TV, super computer networks and other services. Satellites are ideally suited to provide the wide bandwidths and data rates required and are unique in the ability to provide services directly to the users. As new or relocated markets arise, satellites offer a flexibility that conventional distribution services cannot match, and it is no longer necessary to be near population centers to take advantage of the telecommunication revolution. The geopolitical implications of these substantially enhanced communications capabilities can be significant.

Assured clean power enhances customer service

International Nuclear Information System (INIS)

Angell, D.; Venosdel, K.; Padaca, V.

1998-01-01

Steps taken by Idaho Power Co. (IPCO) in Boise, Idaho, to increase efficiency and reduce costs by installing more distribution automation capabilities were outlined. The utility monitors the quality and reliability of power supplied to hi-tech industrial customers through state-of-the-art, client-server software linked to digital meters. The digital metering was integrated into the company's existing supervisory control and data acquisition (SCADA) and energy management systems (EMS). IPCO's territory covers about 51,800 sq km throughout southern Idaho, eastern Oregon and northern Nevada and consists of 79 towns and a dispersed population of 700,000. Many of the customers are farmers. Seventeen hydro and three coal-fired plants supply the diverse customer population with power through 234 substations. Box and mobile substations are used to reach the company's dispersed customer base. The digital power meters (3710 ACM) from Power Measurements Ltd. of Victoria, British Columbia, were installed about six years ago. They are used to analyze collected data and to prevent the utility from overloading its equipment and risking customer power outages. The data is also used to help farmers increase the efficiency of their water pumps. The meter is programmable, allowing IPCO to choose the information it wants to monitor, including harmonics-created problems in its distribution system. The new meters also eliminate the need for extra transducers to collect voltage, current, watts and VAR information. 2 figs

Power system stabilising features from wind power plants augmented with energy storage

DEFF Research Database (Denmark)

Tarnowski, Germán C.; Kjær, Philip C; Lærke, Rasmus

2014-01-01

This paper describes a wind power plant augmented with energy storage, configured to provide ancillary services (primary reserve, inertial response, power oscillation damping) for enhancement of power system stability. Energy storage can complement wind power plants thus reducing the need for any...... overload or curtailment to allow active power modulation. A 12MW + 1.6MW augmented plant is used for demonstration of representative performance of the particular ancillary service control algorithms...

Representativeness, legitimacy and power in public involvement in health-service management.

Science.gov (United States)

Martin, Graham P

2008-12-01

Public participation in health-service management is an increasingly prominent policy internationally. Frequently, though, academic studies have found it marginalized by health professionals who, keen to retain control over decision-making, undermine the legitimacy of involved members of the public, in particular by questioning their representativeness. This paper examines this negotiation of representative legitimacy between staff and involved users by drawing on a qualitative study of service-user involvement in pilot cancer-genetics services recently introduced in England, using interviews, participant observation and documentary analysis. In contrast to the findings of much of the literature, health professionals identified some degree of representative legitimacy in the contributions made by users. However, the ways in which staff and users constructed representativeness diverged significantly. Where staff valued the identities of users as biomedical and lay subjects, users themselves described the legitimacy of their contribution in more expansive terms of knowledge and citizenship. My analysis seeks to show how disputes over representativeness relate not just to a struggle for power according to contrasting group interests, but also to a substantive divergence in understanding of the nature of representativeness in the context of state-orchestrated efforts to increase public participation. This divergence might suggest problems with the enactment of such aspirations in practice; alternatively, however, contestation of representative legitimacy might be understood as reflecting ambiguities in policy-level objectives for participation, which secure implementation by accommodating the divergent constructions of those charged with putting initiatives into practice.

Electric Service Areas, Electric Servic Area - given to us from GA power and Planters Electric - distributed by the EMA Director, Val Ashcraft, Published in 2008, 1:2400 (1in=200ft) scale, Effingham County Government.

Data.gov (United States)

NSGIC Local Govt | GIS Inventory — Electric Service Areas dataset current as of 2008. Electric Servic Area - given to us from GA power and Planters Electric - distributed by the EMA Director, Val...

RETRACTED: Six different hemofiltration devices for blood conservation in cardiac surgery.

Science.gov (United States)

Boldt, J; Zickmann, B; Fedderson, B; Herold, C; Dapper, F; Hempelmann, G

1991-05-01

Hemofiltration devices and the Cell Saver are the most often used techniques to reduce homologous blood requirements in cardiac surgery. In a controlled, randomized study, 105 patients underwent elective aortocoronary bypass grafting. Six different hemofilters (HF-80, HFT 14, CPB 7000, Cobe 1200, UF-205, BC-140) were tested and compared with the Cell Saver (Cell Saver 4) for blood concentration during and after cardiopulmonary bypass. Efficacy, practicality, and laboratory indices including coagulation variables were documented through the morning of the first postoperative day. The HF-80 and UF-205 were the most effective devices for blood concentration. At the end of the operation, the number of platelets was least reduced in these two groups (HF-80, -7%; UF-205, -6%). Moreover, both devices had a significantly higher filtration rate than the other hemofilters. Use of the Cell Saver resulted in the lowest values in coagulation variables (AT-III, fibrinogen, number of platelets) and the most pronounced deterioration in protein homeostasis (colloid osmotic pressure, albumin). In this group, the AT-III concentration was reduced until the morning of the first postoperative day. No negative effects were seen in regard to hemofiltration (free hemoglobin and polymorphonuclear elastase; the Cell Saver group had similar values for these variables). We conclude that blood salvage with hemofiltration devices is superior to that with the Cell Saver. There were, however, significant differences among the hemofilters. The HF-80 and UF-205 were the most effective devices in this study.

The power and the pain: Mammographic compression research from the service-users' perspective

International Nuclear Information System (INIS)

Robinson, Leslie; Hogg, Peter; Newton-Hughes, Ann

2013-01-01

Purpose: to explore the value service-users can add to our understanding of inter-practitioner compression variability in mammography. Imaging of the breast for the screening and detection of breast carcinoma is generally carried out by mammographic examination the technique for which includes compression of the breast. Evolving research calls into question compression practice in terms of practitioner consistency thus raising the possibility that strong compression may not be required. We were interested to know whether this was important to service-users and if such knowledge might influence their behaviour. Methods: and sample: A qualitative study involving 3 focus groups interviews (n = 4, 6 and 5). Participants were first asked to reflect on their own experiences of breast compression within the context of a breast screening examination, then interpret the results of the evolving research detailed above. We then explored whether these participants might behave differently during future mammography in light being appraised of these research findings. Results: A grounded approach was used to analyse the data into themes. The two overarching themes were i) Service-User Empowerment, which illustrates the difficulties participants believe women would encounter in exercising power in the breast screening mammographic examination; and ii) Service User Experience of Mammography, which unearthed unanticipated aspects of the examination, other than compression, that contribute to pain and discomfort and which therefore need investigation. Conclusion: Involving service-users more collaboratively in research can help investigators understand the impact of their work and highlight patient-relevant areas for further investigation

Considerations in the evaluation of concrete structures for continued service in aged Nuclear Power Plants (NPPs)

International Nuclear Information System (INIS)

Naus, D.; Marchbanks, M.; Oland, B.; Arndt, G.; Brown, T.

1989-01-01

Currently, there are /approximately/119 commercial nuclear power plants (NPPs) in the US either under construction, operating at low-to-full power, or awaiting an operating license. Together, these units have a net generating capacity of /approximately/110 GW(e). Assuming no life extension of present facilities, the operating licenses for these plants will start to expire in the middle of the next decade with Yankee Rowe being the first plant to attain this status. Where it is noted that with no life extension of facilities, a potential loss of electrical generating capacity in excess of 75 GW(e) could occur during the time period 2006 to 2020 when the operating licenses of 80 to 90 NPPs are scheduled to expire. A potential timely and cost-effective solution to meeting future electricity demand, which has worked well for non-nuclear generating plants, is to extend the service life (operating licenses) of existing NPPs. Since the concrete components in these plants provide a vital safety function, any continued service considerations must include an in-depth assessment of the safety-related concrete structures. 7 refs

47 CFR 101.513 - Transmitter power.

Science.gov (United States)

2010-10-01

... 47 Telecommunication 5 2010-10-01 2010-10-01 false Transmitter power. 101.513 Section 101.513... SERVICES 24 GHz Service and Digital Electronic Message Service § 101.513 Transmitter power. The transmitter power will be governed by § 101.113. Further, each application must contain an analysis demonstrating...

In-service diagnostics of main circulating circuit pipes of WWER nuclear power plants

International Nuclear Information System (INIS)

Svoboda, V.; Merta, J.; Merta, V.

1982-01-01

The application is discussed of the acoustic emission method for testing the integrity of the components of the main circulating circuit of the WWER 440 nuclear power plant. A description is given of the main circulating circuit and a stress analysis on the basis of strength computations considering operating modes is presented. An analysis is also presented of the possible damage of the pipe material as related to the application of the acoustic emission method for in-service inspection of the pipes. Certain practical problems of application are discussed. (author)

Value of solar thermal and photovoltaic power plants to Arizona Public Service Company

International Nuclear Information System (INIS)

Smith, P.A.

1994-01-01

Arizona Public Service Company has performed a study using historical solar radiation and system load data to (1) estimate the effects of six types of solar generation on system reliability, (2) estimate the central station value of each to its system, (3) and to assess the potential of each of those technologies to provide bulk power to its system in the 2000 time frame. Technologies included three solar thermal (central receiver, dish Stirling, and parabolic trough) and three flat plate photovoltaic plants (fixed position, one axis, and two axis tracking)

Qualification of NDT systems for in-service inspections of nuclear power plant pressure vessels

International Nuclear Information System (INIS)

Elfving, K.

1998-11-01

The goal of this study is to determine the requirements of the in-service inspection qualification in Europe, their feasibility in practice and to find out possible manufacture defects in test pieces used in practical trials. The literature study consists of qualification requirements set by European regulatory bodies and by the European nuclear power utilities. Also a brief summary of qualification requirements set by ASME Code, Section XI and comparison between ASME and European qualification requirements is included

Development of customer information network system. Part 3. Development of power controller (customer side equipment) for advanced customer service and remote processing of conventional customer service; Juyoka joho network no kaihatsu. 3. Juyoka taio gyomu no enkaku shori to aratana juyoka service no tame no denryoku controller no kaihatsu

Energy Technology Data Exchange (ETDEWEB)

Yoshimitsu, T. [Central Research Institute of Electric Power Industry, Tokyo (Japan)

1996-06-01

To offer remote processing of the conventional customer service and advanced customer service using information network, customer side equipment, power controller, was manufactured as a trial. For inspecting the power meter by remote processing, watt-hour meter placed outside was moved into house, to integrate an indoor distribution board consisting of a breaker for contract, earth leakage breaker and branch breaker by adding functions of communication, equipment monitoring and control and functions of display and operation. When detecting fault, installed CPU (central processing unit) or DSP (digital signal processor) stops its operation and each breaker keeps its state as before the fault. Thus, there is no problem for power supply. This system has a battery to maintain and operate at least the display function in the case of outage. Advanced customer service functions could be added without a large cost. To increase understanding of customers concerning electric power saving and electric power itself, consuming electric energy and current are displayed at each branch. Outage of the whole house can be avoided by the rapid detection and removal of the earth leakage branch line. 14 refs., 14 figs., 3 tabs.

47 CFR 101.807 - Transmitter power.

Science.gov (United States)

2010-10-01

... 47 Telecommunication 5 2010-10-01 2010-10-01 false Transmitter power. 101.807 Section 101.807... SERVICES Local Television Transmission Service § 101.807 Transmitter power. Stations in this service will not be authorized to use transmitters having a rated power output in excess of the limits set forth in...

Webtechnology and internet services at power rail systems of German Railway DB AG; Nutzung von Webtechnologien und Internet-Diensten bei der Energieversorgung der Deutschen Bahn

Energy Technology Data Exchange (ETDEWEB)

Walther, J.T. [DB Energie, Frankfurt am Main (Germany)

2007-07-01

Internet services and the technologies of the World Wide Web are used at power rail systems of German Railway in some processes. Important applications are systems support, service and parametering of substation control- and protection equipment and the monitoring of switches and power transformers. The performance of the security claims of the asset management and the IT-Department are a condition for implementation these technologies. (orig.)

Maintenance services of nuclear power plant using 3D as-built database management system

International Nuclear Information System (INIS)

Okumura, Kazutaka; Nakashima, Kazuhito; Mori, Norimasa; Azuma, Takashi

2017-01-01

Three dimensional As-built DAtabase Management System (NUSEC-ADAMS) is a system whose goal is to produce economical, speedy and accurate maintenance services of nuclear power plants by using 3D point group data. This system makes it possible to understand the plant situation remotely without field measurements. 3D point group data are collected before and after plant equipment installations, and it is stored to database after converted to viewable data on the web. Therefore, it can be shared in domestic network of a company and it can be connected with system diagram, specification of equipment, and additional information (e.g. maintenance record) by registering key information between 3D point group data and equipment's data. Thus, it reduces workload of pre-job field survey and improves work efficiency. In case of problem at a plant, if 3D as-built data is set to be seen on the network, it is possible to understand accurate information and the cause remotely in the beginning of problem. Collecting 3D point group data and updating database continuously keep as-built information up to date, therefore it improves accuracy of off-site study, and plant situation can be grasped timely. As a result, we can reduce workload and improve quality of maintenance services of nuclear power plants. (author)

Dams. Bulletin of the Technical Service of Electric Power and Big Dams; Barrages. Bulletin du Service Technique de l`Energie Electrique et des Grands Barrages

Energy Technology Data Exchange (ETDEWEB)

NONE

1996-12-31

Three papers were selected in this issue of the bulletin of the Technical Service of Electric Power and Big Dams. The first one concerns the experience feedback gained from the accident of the Drac river near Grenoble (France) due to a spillover at the Notre-Dame-de-Commiers` dam and which led to the death of 6 children and their teacher. The second one is a report of the conclusions of decennial and annual safety inspections of French dams, while the third one is a report of the Control Services activities for the third quarter of the year 1996 concerning the French dams in operation. (J.S.)

The Secret of Bosnia Sceptre by Enes Ratkušić

OpenAIRE

Hasanagić, Senad

2014-01-01

Bosnia plays like thrilling dark forces which broke the resistance of the belief that they can only now trying to snatch the sceptre but they are faced with the power of the royals to the country. They believe that to protect the Did’s Sceptre is a holy mission and the sceptre will be delivered to the Saver who will come when the evil and cruelty rule the world

Detection and mitigation of aging and service wear effects of nuclear power plant components in Canada

International Nuclear Information System (INIS)

Pachner, J.

1987-07-01

In Canada, the operational safety management of nuclear power plants employs methods which are intended to prevent, detect, correct and mitigate system and component failures from any cause, including the effects of aging and service wear degradation. The paper gives an overview of the application of these methods in the detection and mitigation of aging effects before they impact on plant safety and production reliability. Regulatory audits of these methods, to ensure that an acceptable level of plant safety is maintained by the nuclear power plant licensees, are also described. The methods are: a preventive maintenance program, Significant Event Reporting system, and a reliability based assessment of performance of safety related systems. The above methods are discussed and illustrated by examples. The soundness of the approach has been proven by the results achieved in 163 reactor-years of operation. Present and future developments include reviews of current monitoring, testing and inspection methods to ensure that appropriate time variant parameters (capable of revealing aging degradation before loss of functional capability) are monitored, and reviews of the effectiveness of existing maintenance programs and methods in mitigating aging and service wear effects

Long term operation of nuclear power plants – IAEA SALTO peer review service and its results

Energy Technology Data Exchange (ETDEWEB)

Krivanek, Robert, E-mail: r.krivanek@iaea.org

2014-12-15

Highlights: • SALTO peer review service is designed for reviewing of ageing management and NPPs’ preparedness LTO. • It has been established as an effective tool to review the compliance with IAEA safety standards. • The important issues for safe LTO are being identified by SALTO missions. • Analysis of those issues is provided in the paper. • This peer review service is strongly recommended for NPPs prior to entering LTO period. - Abstract: This paper presents main IAEA activities for safe long term operation (LTO) which includes establishment of IAEA Safety Standards and other LTO related documents, fostering information exchange and establishing databases and provision of SALTO (Safety Aspects of Long Term Operation) peer review service. This paper provides insights into IAEA SALTO peer review service objectives, scope and methodology. The SALTO peer review service was designed to assist nuclear power plant (NPP) operators in adopting a proper approach to LTO of their plants and in implementing complete and appropriate activities to ensure that plant safety will be maintained during the LTO period. The SALTO peer review service can also support regulators in establishing or improving regulatory and licensing strategies for LTO of NPPs. Issues derived from 19 SALTO missions and 2 LTO modules of OSART (Operational Safety Review Team) missions conducted during the period of 2005 to March 2014 are also analyzed in this paper.

The role of national consultant services industries to support the first nuclear power plant programme in Indonesia

International Nuclear Information System (INIS)

Dharu Dewi; Sahala Lumbanraja; Sriyana

2007-01-01

Study has been done which concerning the role of Indonesian National Consultant Services Industries to support the First Nuclear Power Plant (NPP) Programme in Indonesia. NPP programme activities will be success if the studies should be started with good planning. To obtain the optimal results, the opportunity and the role of national consultants should be considered to the localization of NPP Programme to be bigger. Utilizing of national consultants services can be expected to become second opinion which is to play important role in socialization of NPP Programme. The Government and NPP Project Owner's candidate should analysis, plan and implement the Nuclear Power Plant Programme activities, started from identification of the available national consultants, considering the national consults procurement process, definition of scope of works of national consultants activities, carry out the selection of national consultants, evaluation, monitoring and supervision so that the utilizing of national consultants will give benefit more effective, efficient, economic appropriate objectives and good quality. This study to assess the structure and type of national consultants, works package which can be done by national consultants, selection methods of national consultants, constraints of national consultants and enhancing of the role of national consultants to involve and support in the nuclear power plant programme in Indonesia. The research methods are literature study, consultation with resource person and exploring of website/internet. (author)

An overview of in-service inspection for nuclear power plants in Japan

International Nuclear Information System (INIS)

Takano, Eishiro

1996-01-01

In nuclear power stations, for maintaining the safety of machinery and equipment, it is stipulated to carry out periodic inspection. The contents of the periodic inspection and the inspections of important matters are explained. In-service inspection (ISI) is the nondestructive inspection for confirming the soundness of reactor pressure vessels, main pipings, valves and others. The stipulations on the scope and time of the periodic inspection and ISI, the course of introducing ISI into Japan, and the basic way of thinking on ISI are described. Pre-service inspection (PSI) is carried out for the purpose of collecting and recording the initial data for ISI. The range of the objects of nondestructive inspection and leak test and the range of the objects of leak test only are shown. As to nondestructive inspection, the parts to be inspected, the frequency of inspection and the methods of inspection, and the method of leak test are described. As the present state of inspection technology, the automatic ultrasonic flow detectors for reactor vessels, piping welded parts and reactor vessel stud bolts, and the eddy current flaw detector for steam generator tubes are explained. (K.I.)

Dams. Bulletin of the Technical Service of Electric Power and Big Dams; Barrages. Bulletin du Service Technique de l`Energie Electrique et des Grands Barrages

Energy Technology Data Exchange (ETDEWEB)

NONE

1996-12-31

Four papers were selected in this issue of the bulletin of the Technical Service of Electric Power and Big Dams. The first one concerns the `Catastrophe Medicine` congress which took place in Amiens (France) in December 5 to 7 1996 and during which the analysis of experience feedbacks and lessons gained after dam accidents and organisation of emergency plans was discussed. The second one is a report of the conclusions of the decennial and annual inspections of French dams. The third paper describes the reinforcement of the Lavaud-Gelade dam embankment and the last paper reports on the Control Services activities concerning the French dams in operation for the forth quarter of the year 1996. (J.S.)

Utilization of controllable load for system operations services - Potential in the power system; Utnyttjande av styrbara laster foer systemdrifttjaenster - Potential i kraftsystemet

Energy Technology Data Exchange (ETDEWEB)

Bojrup, Martin; Petersson, Andreas; Agneholm, Evert

2013-04-15

The frequency quality in the synchronized Nordic power system has decreased significantly during the last years. At the same time the procurement costs for frequency control services from the producers has increased dramatically. The decreased frequency quality has also resulted in an increased wear on production units taking part in frequency control. The large scale integration of renewable s, such as wind power, will probably result in a need for more frequency control resources. In order to increase the frequency control resources in the power system and find more cost efficient solutions this project suggests a development of a method for load control based on grid frequency. The suggested load control is applicable on loads fed by a variable-speed drive (VSD) and the purpose is to use energy loads, i.e. loads that not necessary need a constant power. By using the control capacity in these loads the power consumption from these loads can be controlled without causing any notable inconveniences for the customers. In the report the future potential is estimated for different ancillary services. As the installation of new VSDs and exchange of existing VSDs are performed to a large extent every year it is possible, already some years after implementation, to see an impact in the power system.

Fault tolerant aggregation for power system services

DEFF Research Database (Denmark)

Kosek, Anna Magdalena; Gehrke, Oliver; Kullmann, Daniel

2013-01-01

number of small units. A common approach is to aggregate a portfolio of such units together and expose them to the power system as a single large virtual unit. In order to realize the vision of a Smart Grid, concepts for flexible, resilient and reliable aggregation infrastructures are required......Exploiting the flexibility in distributed energy resources (DER) is seen as an important contribution to allow high penetrations of renewable generation in electrical power systems. However, the present control infrastructure in power systems is not well suited for the integration of a very large...

Experience with respect to dose limitation in nuclear fuel service operations in the United Kingdom supporting civil nuclear power programmes

International Nuclear Information System (INIS)

Kennedy, J.W.

1983-01-01

Within the United Kingdom, the nuclear power generation programme is supported by nuclear fuel services including uranium enrichment, fuel fabrication and reprocessing, operated by British Nuclear Fuels Limited (BNFL). These have entailed the processing of large quantities of uranium and of plutonium and fission products arising in the course of irradiation of fuel in nuclear power stations and have necessitated substantial programmes for the radiological protection of the public and of the workers employed in the industry. This paper presents and reviews the statistics of doses recorded in the various sectors of nuclear fuel services operations against the background of the standards to which the industry is required to operate. A description is given of the development of BNFL policy in keeping with the objective of being recognized as among those industries regarded as safe and the resource implications of measures to reduce doses received by workers are reviewed in the light of experience. Finally, the paper reviews the epidemiological data which have been, and continue to be, collected for workers who have been employed in these nuclear fuel services. (author)

On the Use of Energy Storage Technologies for Regulation Services in Electric Power Systems with Significant Penetration of Wind Energy

DEFF Research Database (Denmark)

Yang, Bo; Makarov, Yuri; Desteese, John

2008-01-01

Energy produced by intermittent renewable resources is sharply increasing in the United States. At high penetration levels, volatility of wind power production could cause additional problems for the power system balancing functions such as regulation. This paper reports some partial results...... and frequently changing regulation signal. Several energy storage options have been analyzed based on thirteen selection criteria. The evaluation process resulted in the selection of flywheels, pumped hydro electric power (or conventional hydro electric power) plant and sodium sulfur or nickel cadmium batteries...... of a project work, recently conducted by the Pacific Northwest National Laboratory (PNNL) for Bonneville Power Administration (BPA). The project proposes to mitigate additional intermittency with the help of Wide Area Energy Management System (WAEMS) that would provide a two-way simultaneous regulation service...

RETRACTED: Acute preoperative plasmapheresis and established blood conservation techniques.

Science.gov (United States)

Boldt, J; Kling, D; Zickmann, B; Jacobi, M; Dapper, F; Hempelmann, G

1990-07-01

Plasmapheresis performed weeks before an operation producing autologous plasma has proved to be of benefit in elective operations. First experiences in acute plasmapheresis, which is performed immediately before the operation, have been reported recently. When acute plasmapheresis is used in cardiac operations, however, it must be viewed in connection with other techniques for reducing blood consumption such as the Cell Saver (CS) and ultrafiltration devices. In 60 patients undergoing elective aortocoronary bypass grafting, acute plasmapheresis was performed, producing either platelet-poor plasma or platelet-rich plasma, in combination with either the Cell Saver or hemofiltration. Fluid balance during cardiopulmonary bypass was significantly lower in the hemofiltration patients. Postoperatively, none of these patients received donor blood, whereas 4 patients of the Cell-Saver groups needed packed red blood cells. AT-III, fibrinogen, the number of platelets, albumin, total protein, and colloid osmotic pressure were less compromised when hemofiltration was used in combination with acute plasmapheresis in contrast to combination with the Cell-Saver technique. Plasma hemoglobin was without differences during the investigation period, and polymorphonuclear elastase was less increased when platelet-rich plasma was produced preoperatively. On the first postoperative day, most of the differences between the groups had already disappeared. We conclude that when acute plasmapheresis is used in cardiac operations, discarding of plasma by the Cell Saver should be avoided and ultrafiltration devices should replace centrifugation techniques for blood conservation.

APPLICATION OF MODIFIED POWER FLOW TRACING METHOD FOR REACTIVE POWER PRICING IN PRACTICAL UTILITY SYSTEM

Directory of Open Access Journals (Sweden)

M. SUSITHRA

2017-01-01

Full Text Available Competitive trend towards restructuring and unbundling of transmission services has resulted in the need to discover the impact of a particular generator to load. This paper initially presents the analysis of three different reactive power valuation methods namely, Modified Ybus , Virtual flow approach and modified power flow tracing to compute the reactive power output from a particular generator to particular load. Among these methods, the modified power flow electricity tracing method is identified as the best method to trace the reactive power contribution from various reactive power sources to loads, transmission line, etc. Also this proposed method breakdown the total reactive power loss in a transmission line into components to be allocated to individual loads. Secondly, based on this Method a novel allocation method for reactive power service for practical system is proposed. Hence, this method can be useful in providing additional insight into power system operation and can be used to modify existing tariffs of charging for reactive power transmission loss and reactive power transmission services. Simulation and comparison results are shown by taking WSCC 9 and IEEE 30 bus system as test system.

High impact data visualization with Power View, Power Map, and Power BI

CERN Document Server

Aspin, Adam

2014-01-01

High Impact Data Visualization with Power View, Power Map, and Power BI helps you take business intelligence delivery to a new level that is interactive, engaging, even fun, all while driving commercial success through sound decision-making. Learn to harness the power of Microsoft's flagship, self-service business intelligence suite to deliver compelling and interactive insight with remarkable ease. Learn the essential techniques needed to enhance the look and feel of reports and dashboards so that you can seize your audience's attention and provide them with clear and accurate information. Al

Service Innovation and Customers’ Involvement in Service Industry in Kosovo

Directory of Open Access Journals (Sweden)

MSc. Vjosa Mullatahiri

2014-06-01

Full Text Available New developments in the economic arena and rapid technological changes have shifted the economic power from company to customer. As a result, companies changed their approach toward customers’ involvement in new product and/or service development. Usually, innovations are driven by inventions. But not all inventions are successful innovations. Hence, to be successful, inventions should be explored to meet customer needs and demands, and commercialized to make the company profitable (DTI - Occasional Paper No 9, 2007. According to Lowe and Marriott (2006 the innovation is a process of creating and transforming products, services, and organizational processes that are crucial for companies who want to compete in a highly dynamic and competitive market. In this regard, the paper aims to explore the interrelation between market and innovation in services industry, whilst analyzing both customers’ impact in new service development (NSD and Kosovo’s service providers approach in including customers in service development processes. The findings highlight an increased customer power over the NSD processes as a result of their demand and unwillingness to bear the cost of or experiment with new, untested services. Given these developments service providers have started to change their approach of creating and transforming services, namely by involving customers in the service design and development processes, in order to stimulate interest for using and willingness to pay for new service.

Risk management of the North Anna Power Station Service Water System Preservation Project using the IPE model

International Nuclear Information System (INIS)

Afzali, A.; Donovan, M.D.; Sartain, M.D.; Bankley, A.V.

1993-01-01

This paper discusses the application of the North Anna Power Station Individual Plant Examination (IPE) models in PRA study of the Service Water System Preservation Project (SWSPP). The service water project involves repair and restoration of the Service Water System (SWS) piping and will require excavation of the buried SWS lines in addition to temporarily removing one of the two redundant SWS loops from operation. The SWSPP will be carried out with one or both units in normal operation. The objective of the PRA study was to quantify the risk impact (as measured by the change in Core Damage Frequency (ΔCDF)) of the SWSPP and to identify and evaluate countermeasures to reduce the risk impact of the project activities. The study concluded that the ΔCDF would be acceptable by undertaking preventative measures and by providing additional accident mitigating measures during performance of the SWSPP activities

Unsupervised Power Profiling for Mobile Devices

DEFF Research Database (Denmark)

Kjærgaard, Mikkel Baun; Blunck, Henrik

Today, power consumption is a main limitation for mobile phones. To minimize the power consumption of popular and traditionally power-hungry location-based services requires knowledge of how individual phone features consume power, so that those features can be utilized intelligently for optimal...... power savings while at the same time maintaining good quality of service. This paper proposes an unsupervised API-level method for power profiling mobile phones based on genetic algorithms. The method enables accurate profiling of the power consumption of devices and thereby provides the information...

Unsupervised Power Profiling for Mobile Devices

DEFF Research Database (Denmark)

Kjærgaard, Mikkel Baun; Blunck, Henrik

2011-01-01

Today, power consumption is a main limitation for mobile phones. To minimize the power consumption of popular and traditionally power-hungry location-based services requires knowledge of how individual phone features consume power, so that those features can be utilized intelligently for optimal...... power savings while at the same time maintaining good quality of service. This paper proposes an unsupervised API-level method for power profiling mobile phones based on genetic algorithms. The method enables accurate profiling of the power consumption of devices and thereby provides the information...

Optimum power quality service in multi-bus microgrid systems

DEFF Research Database (Denmark)

Meng, Lexuan; Guerrero, Josep M.

2017-01-01

Power quality requirements for different consumers and electric equipment are distinguished. Conventionally a common power quality standard is applied to the whole power grid inducing debate between several sides, including consumers, generation sites and technical commissions. Customized power...... quality standard settings for different consumers become a widely accepted solution. The main challenge is on the proper regulation of power quality in different areas. This paper considers a multi-bus microgrid system where the power quality in each has flexible and individual standard. Distributed...... generators are utilized to provide power quality regulation functions. An optimization method based strategy is proposed and implemented with the power converter control system. A general mathematical model is established which can be used in the optimization problem for evaluating the objective function...

Certification of support services

International Nuclear Information System (INIS)

Hroch, A.; Osusky, V.

2006-01-01

In this paper the process of certification of support services in the Slovenske elektrarne, a. s. is described. The nuclear power plants are also included into support services. Provisions and economic aspects of support services are discussed

Optimization for Customized Power Quality Service in Multibus Microgrids

DEFF Research Database (Denmark)

Meng, Lexuan; Guerrero, Josep M.

2017-01-01

Power quality requirements for different consumers and electric equipment are distinctive. Conventionally, common power quality standards are applied to the whole power grid inducing debate between technical commissions. Customized power quality standards for different consumers become a widely...... accepted solution. The main challenge is on the proper regulation of power quality in different areas. This paper considers a multibus microgrid system, where the power quality in each area has individual adjustable standard. Voltage unbalance, induced by connection of single-phase loads, is taken...

Reviews Book: The Age of Wonder Equipment: Portoscope DVD: Around the World in 80 Images Book: Four Laws that Drive the Universe Book: Antimatter Equipment: Coffee Saver Starter Set Equipment: Graphite Levitation Kit Book: Critical Reading Video: Science Fiction-Science Fact Web Watch

Science.gov (United States)

2009-03-01

WE RECOMMEND The Age of Wonder This book tells the stories of inspiring 19th-century scientists Antimatter A fast read that gives an intriguing tour of the antimatter world Science Fiction-Science Fact A video from a set of resources about the facts in science fiction WORTH A LOOK Portoscope Lightweight ×30 microscope that is easy on the purse Four Laws that Drive the Universe In just 124 pages Peter Atkins explains thermodynamics Coffee Saver Starter Kit A tool that can demonstrate the effect of reduced air pressure Graphite Levitation Kit Compact set that demonstrates diamagnetic behaviour Critical Reading A study guide on how to read scientific papers HANDLE WITH CARE Around the World in 80 Images Navigate through images from Envistat, country by country WEB WATCH This month's issue features real-time simulation program Krucible 2.0, which enables learners to run virtual experiments

Bivalve fouling of nuclear power plant service-water systems. Volume 2. Current status of biofouling surveillance and control techniques

International Nuclear Information System (INIS)

Daling, P.M.; Johnson, K.I.

1985-03-01

This report describes the current status of techniques for detection and control of cooling-water system fouling by bivalve mollusks at nuclear power plants. The effectiveness of these techniques is evaluated on the basis of information gathered from a literature review and in interviews with nuclear power plant personnel. Biofouling detection techniques examined in this report include regular maintenance, in-service inspection, and testing. Generally, these methods have been inadequate for detecting biofouling. Recommendations for improving biofouling detection capabilities are presented. Biofouling prevention (or control) methods that are examined in this report include intake screen systems, thermal treatment, preventive maintenance, chemical treatment alternatives, and antifoulant coatings. Recommendations for improving biofouling control methods at operating nuclear power plants are presented. Additional techniques that could be implemented at future power plants or that require further research are also described

Satellite power system in the service of man

Energy Technology Data Exchange (ETDEWEB)

Hyde, F.W.

1981-01-01

The solar power satellite concept is discussed in its various aspects: technical assumptions; unit power output; economic impact; impact on resources; environmental impacts; primary system functions; transmission of energy to earth; reception and conversion to usable energy on earth; space transport; station-keeping and attitude control; fabrication and assembly in space; power beam phase control; satellite maintenance; ancillary functions at rectenna site; and emerging technologies.

Exploring the dynamics of power: a Foucauldian analysis of care planning in learning disabilities services.

Science.gov (United States)

Gilbert, Tony

2003-03-01

This paper draws upon a study completed in 2000 that focused upon health and welfare provision for people with learning disabilities in one English county. This study drew upon the theoretical insights of Michel Foucault to provide an analysis of the micro politics of care planning. This involved the analysis of text from two sources: the academic literature and interview material gained from a number of professionals working in health and welfare services for people with learning disabilities. Drawing upon this research material, the first part of this paper briefly explores the relationship between policy, professional practice and the people who are the subjects of that practice. The discussion then moves on to consider Foucault's five methodological precautions and the way power produces a localised web of activity that identifies specific targets for management. In this process power draws into the web a range of informal and formal practices that initially lie outside of the web. The discourse produced through the activity surrounding care planning provides the evidence of this flow of power. This discourse then takes on the status of science (truth), which reproduces this activity.

CONSEQUENCES OF A SHIFT IN THE POWER BALANCE FOR THE MARKET OF SERVICES

Directory of Open Access Journals (Sweden)

Frits van den BERG

2008-06-01

Full Text Available This article starts with some observations on changes in the power balance between clients and suppliers in the service industry. The main forces between these changes are more information in the hands of clients (by use of internet and personal experiences and less information received by suppliers (by less contact with potential clients because of cost reduction. These changes can be translated into the replacement of a demand oriented market by a demand driven market. For suppliers of services to individuals in such a market two aspects are highly relevant. First the client will formulate his wishes in a kind of "Terms of Reference" and the supplier has to search for interesting requests. This instead of the client searching on internet or somewhere else for the best standard offer. In the second place the client will formulate his wishes often in a way that a single enterprise cannot deliver what is wanted. In order to survive chains of enterprises have to be formed. I mentioned a few of the vulnerable points of chains, points which need to have attention in the contract between the links of the chain.

Law n. 2000-108 of the 10 february 2000 relative to the modernization and the development of the electrical power public service; Loi n. 2000-108 du 10 fevrier 2000 relative a la modernisation et au developpement du service public de l'electricite

Energy Technology Data Exchange (ETDEWEB)

NONE

2000-02-01

Here is the all text of the law, from the 10 february 2000, relative to the modernization and the development of the electrical power public service in France. This presentation of 55 articles deals with the missions and the working of the public service in the domain of the electrical power distribution. The financial aspects are also presented. (A.L.B.)

METHODOLOGY OF DETERMINATION OF QUALITY INDEX OF MAINTENANCE SERVICE SYSTEM OF POWER EQUIPMENT OF TRACTION SUBSTATIONS

Directory of Open Access Journals (Sweden)

O.O. Matusevych

2016-03-01

Full Text Available Purpose. The purpose of this paper is development of methodology for definition of a quality system of maintenance and repair (M and P power equipment of traction substations (TS of electrified railways operating under conditions of uncertainty based on expert information. Methodology. The basic tenets of the theory of fuzzy sets and marks, linguistic and interval estimates of experts were applied to solve this problem. Results. Analysis of the existing diversity of approaches to development of modern methods of improvement of M and P allows us to conclude that the improvement in the quality of the system is achieved by solving individual problems increase the operational reliability of power equipment of traction substations in the following main interrelated areas. There are technical, economic and organizational. The basis of the quality evaluation system is initial data and expertise developed version of the document formalized quality evaluation of electrical equipment of traction substations by experts. The choice of determining the level of Quality service system based on the marks, linguistic and interval estimates of experts, which are reflected in quantitative and / or qualitative form was done. The possible options for expert data presentation and their corresponding quantitative methods of calculating the integral index of quality improvement system maintenance and P of traction substations were described. The methodology and the method of assessing the quality of system maintenance and P of TS allows quickly respond to changing operating conditions of power equipment of traction substations, and to determine the most effective strategies for maintenance of electrical and P TS under conditions of uncertainty functioning distance electricity. Originality. The method of a systematic approach to improve the quality of the system maintenance and P of power equipment of traction substation under conditions of uncertainty based on expert

Implementation of Genetic Algorithm for Solving De Jong Test Function on Cloud Environment and Compare Its Performance with Local Host Environment

OpenAIRE

Syed Tauhid Zuhori

2012-01-01

In this day, Cloud Computing has gained large attention not only from IT specialists but also from many clients. It is global network (internet)-based computing, where shared resources, software and information are provided to computers and other devices on-demand, like the electricity bill. Firstly Cost can be reduced and the technology is also known as green saver or power technology. Secondly, the dynamic and flexible scalability of cloud computing. The third is that cloud computing is pla...

Service Mediation and Negotiation Bootstrapping as First Achievements Towards Self-adaptable Cloud Services

Science.gov (United States)

Brandic, Ivona; Music, Dejan; Dustdar, Schahram

Nowadays, novel computing paradigms as for example Cloud Computing are gaining more and more on importance. In case of Cloud Computing users pay for the usage of the computing power provided as a service. Beforehand they can negotiate specific functional and non-functional requirements relevant for the application execution. However, providing computing power as a service bears different research challenges. On one hand dynamic, versatile, and adaptable services are required, which can cope with system failures and environmental changes. On the other hand, human interaction with the system should be minimized. In this chapter we present the first results in establishing adaptable, versatile, and dynamic services considering negotiation bootstrapping and service mediation achieved in context of the Foundations of Self-Governing ICT Infrastructures (FoSII) project. We discuss novel meta-negotiation and SLA mapping solutions for Cloud services bridging the gap between current QoS models and Cloud middleware and representing important prerequisites for the establishment of autonomic Cloud services.

Ancillary Services Provided from DER

Energy Technology Data Exchange (ETDEWEB)

Campbell, J.B.

2005-12-21

Distributed energy resources (DER) are quickly making their way to industry primarily as backup generation. They are effective at starting and then producing full-load power within a few seconds. The distribution system is aging and transmission system development has not kept up with the growth in load and generation. The nation's transmission system is stressed with heavy power flows over long distances, and many areas are experiencing problems in providing the power quality needed to satisfy customers. Thus, a new market for DER is beginning to emerge. DER can alleviate the burden on the distribution system by providing ancillary services while providing a cost adjustment for the DER owner. This report describes 10 types of ancillary services that distributed generation (DG) can provide to the distribution system. Of these 10 services the feasibility, control strategy, effectiveness, and cost benefits are all analyzed as in the context of a future utility-power market. In this market, services will be provided at a local level that will benefit the customer, the distribution utility, and the transmission company.

Research Developments on Power System Integration of Wind Power

DEFF Research Database (Denmark)

Chen, Zhe; Hansen, Jens Carsten; Wu, Qiuwei

2011-01-01

variability and prediction, wind power plant ancillary services, grid connection and operation, Smart grids and demand side management under market functionality. The topics of the first group of PhD program starting 2011 under the wind energy Sino-Danish Centre for Education & Research (SDC) are also......This paper presents an overview on the recent research activities and tendencies regarding grid integration of wind power in Denmark and some related European activities, including power electronics for enhancing wind power controllability, wind turbines and wind farms modeling, wind power...

18 CFR 35.10a - Forms of service agreements.

Science.gov (United States)

2010-04-01

... 18 Conservation of Power and Water Resources 1 2010-04-01 2010-04-01 false Forms of service agreements. 35.10a Section 35.10a Conservation of Power and Water Resources FEDERAL ENERGY REGULATORY... service agreement for a service other than market-based power sales, the public utility shall include as...

Evaluation of crack-like flaw in Japanese fitness-for-service code for nuclear power plant components

International Nuclear Information System (INIS)

Kashima, Koichi

2003-01-01

For evaluation of faults detected at nuclear appliances, establishment of fitness-for-service code in Japan is focused by most of peoples. The code is a management rule to keep features of the appliances under supplying operation to their constant safe level and is a rule composing a pair with design rule. The codes for nuclear power generation facilities-rules of fitness-for-service for nuclear power plants were issued on May, 2002, by the Japan Society of Mechanical Engineering (JSME), which was added on October, 2002, by its inspection code, for its amendment. Under such states, Japan Government is proceeding on establishment of the fitness-for-service code in Japan on a base of the private rule. Here were introduced present state and tasks on content of crack-like flaw evaluation on the code under an example of the private rule of JSME, which is composed of three items of inspection, evaluation, and recovery and exchange. The evaluation of defects consists of 1) the first step of evaluation of defects and 2) the second step of evaluation of defects. The first step determines the size of defect by modeling form. When the size of defect is smaller than the evaluation criterion, the appliances can be used unconditionally. However, its size is larger than the evaluation criterion, the appliances have to be evaluated by the second step. When the estimated defects size at end of evaluation period is smaller than the permissible value, the appliances can be used within the evaluation period. But, if its size is larger than the permissible value, the appliances have to be recovered and exchanged. Modeling, evaluation criterion, evaluation of destruction, safety standards and future problems are described. (S.Y.)

Powering a Home with Just 25 Watts of Solar PV. Super-Efficient Appliances Can Enable Expanded Off-Grid Energy Service Using Small Solar Power Systems

Energy Technology Data Exchange (ETDEWEB)

Phadke, Amol A. [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Jacobson, Arne [Schatz Energy Research Center, Arcata, CA (United States); Park, Won Young [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Lee, Ga Rick [Schatz Energy Research Center, Arcata, CA (United States); Alstone, Peter [Univ. of California, Berkeley, CA (United States); Khare, Amit [Schatz Energy Research Center, Arcata, CA (United States)

2015-04-01

Highly efficient direct current (DC) appliances have the potential to dramatically increase the affordability of off-grid solar power systems used for rural electrification in developing countries by reducing the size of the systems required. For example, the combined power requirement of a highly efficient color TV, four DC light emitting diode (LED) lamps, a mobile phone charger, and a radio is approximately 18 watts and can be supported by a small solar power system (at 27 watts peak, Wp). Price declines and efficiency advances in LED technology are already enabling rapidly increased use of small off-grid lighting systems in Africa and Asia. Similar progress is also possible for larger household-scale solar home systems that power appliances such as lights, TVs, fans, radios, and mobile phones. When super-efficient appliances are used, the total cost of solar home systems and their associated appliances can be reduced by as much as 50%. The results vary according to the appliances used with the system. These findings have critical relevance for efforts to provide modern energy services to the 1.2 billion people worldwide without access to the electrical grid and one billion more with unreliable access. However, policy and market support are needed to realize rapid adoption of super-efficient appliances.

Service experience with AISI type 316 steel components in CEGB Midlands Region power plant

International Nuclear Information System (INIS)

Plastow, B.; Bagnall, B.I.; Yeldham, D.E.

1979-01-01

The service performance of AISI Type 316 steel components in sections up to 100 mm thick in Power Plant of the Midlands Region of the C.E.G.B. is reviewed. A comparison is drawn between the satisfactory performance of components whose dimensional stability is not critical and the difficulties experienced when rapid rates of change of temperature cause distortion in thick section components. Weldment manufacture and performance are reviewed and both are considered to be satisfactory. In general the material has performed well and the difficulties due to distortion have been overcome by imposing operating regimes which limit rates of temperature change. (author)

Risk and Return Analysis of Mutual Fund Industry in India

OpenAIRE

Bilal Ahmad Pandow; Khurshid Ahmad Butt

2017-01-01

The mutual funds is one of the important classes of financial intermediaries which enables millions of small and large savers spread across India as well as internationally to participate in and derive the benefits of the capital market growth. Thus the involvement of mutual funds in the transformation of Indian economy has made it urgent to view their services as they are playing role in mobilizing and allocation of investable funds through markets. The fact is that mutual funds have a lot o...

Areva: experiences in outage services

International Nuclear Information System (INIS)

Wiemeier, R.; Mueller, N.; Blanco, I. J.

2010-01-01

As the world leader in the nuclear industry, Areva is firmly committed to the safe and reliable operation of the Spanish nuclear power plants. Following this commitment, Areva has established the subsidiary Areva NP Services Spain as a local platform to provide nuclear services for the Spanish nuclear power plants. being integrated and supported by the global Areva Group, Areva NP Services Spain is able to offer services solutions to all customers demands while maintaining close and sustainable relationships with them. This integration also allows the Spanish personnel of Areva to employ their skills by working in multinational teams in international projects. This article will present the capacities, and the most important recent national and international project performed by Areva NP Services Spain in the field of outage services. (Author)

Effective Electronic Security: Process for the Development and Validation from Requirements to Testing

Science.gov (United States)

2013-06-01

ABBREVIATIONS ANSI American National Standards Institute ASIS American Society of Industrial Security CCTV Closed Circuit Television CONOPS...is globally recognized for the development and maintenance of standards. ASTM defines a specification as an explicit set of requirements...www.rkb.us/saver/. One of the SAVER reports titled CCTV Technology Handbook has a chapter on system design. The report uses terms like functional

Automation and mechanization of in-service inspection of selected equipment in FRG's nuclear power plants

International Nuclear Information System (INIS)

Metke, E.

1988-01-01

The procedures and equipment are described for the automation and mechanization of in-service inspection in nuclear power plants in the FRG, used by the KWU company. Checks of the pressure vessel are done by visual means using a colour tv camera, the method of eddy currents and the ultrasonic method. An analysis is made of the time schedule of ultrasonic inspections, and the central column manipulator is described which allows to check all internal regions of the pressure vessel. Attention is also devoted to other devices, e.g., those for prestressing shanks, cleaning shanks, cleaning thread apertures, etc. A combined probe using the ultrasonic method and the eddy current method serves the inspection of heat exchange tubes in the steam generator. For inspecting the primary circuit the KWU company uses devices for checking and working the inner surface of pipes. Briefly described are examples of using KWU equipment in nuclear power plants in CMEA countries. (Z.M.). 11 figs., 6 refs

DIGITAL LOYALTY FOR SOCIAL MEDIA, A CASE STUDY ON BOXPLOSIVE B.V.

Directory of Open Access Journals (Sweden)

Christopher Pandoyo

2017-01-01

Full Text Available Digital loyalty is the process of providing incentives to customers through digital media to increase customer loyalty. Nowadays, Boxplosive B.V. using app to distribute deal and saver cards from retailers like AH to go and Etos to their customer. But the problem is that not all the customers are willing to download the app. To overcome this problem, this research investigate how social media app can be used for distributing deal and saver card. Therefore, a prototype program will be built for the implementation to show that social media app can be used for business purposes. The result shows that now the customer do not need to download the separate apps to get the deas and saver card.

Power generation by nuclear power plants

International Nuclear Information System (INIS)

Bacher, P.

2004-01-01

Nuclear power plays an important role in the world, European (33%) and French (75%) power generation. This article aims at presenting in a synthetic way the main reactor types with their respective advantages with respect to the objectives foreseen (power generation, resources valorization, waste management). It makes a fast review of 50 years of nuclear development, thanks to which the nuclear industry has become one of the safest and less environmentally harmful industry which allows to produce low cost electricity: 1 - simplified description of a nuclear power generation plant: nuclear reactor, heat transfer system, power generation system, interface with the power distribution grid; 2 - first historical developments of nuclear power; 3 - industrial development and experience feedback (1965-1995): water reactors (PWR, BWR, Candu), RBMK, fast neutron reactors, high temperature demonstration reactors, costs of industrial reactors; 4 - service life of nuclear power plants and replacement: technical, regulatory and economical lifetime, problems linked with the replacement; 5 - conclusion. (J.S.)

LHC Power Distribution

CERN Document Server

Pedersen, J

1999-01-01

The power distribution for the LHC machine and its experiments will be realised making extensive use of the existing infrastructure for the LEP. The overall power requirement is approximately the same, about 125 MW. The load distribution will however change. The even points will loose in importance and the points 1 and 5 will, due to the installation of ATLAS and CMS, gain. A thorough reorganisation of the 18 kV distribution will thus be necessary. Due to the important cryogenic installations required for the LHC, the 3.3 kV distribution system, supplying mainly cryogenic compressors, will be extended with a number of new substations. The important number of new surface buildings, underground caverns and other underground structures all will receive general service installations: Lighting and power. The new injection tunnels will require complete installations: A.C. supplies for the power converters and for general service, and D.C. cabling for the magnets of the beam line. Special safe power installations ar...

18 CFR 35.40 - Ancillary services.

Science.gov (United States)

2010-04-01

... 18 Conservation of Power and Water Resources 1 2010-04-01 2010-04-01 false Ancillary services. 35.40 Section 35.40 Conservation of Power and Water Resources FEDERAL ENERGY REGULATORY COMMISSION... Sales of Electric Energy, Capacity and Ancillary Services at Market-Based Rates § 35.40 Ancillary...

Microturbine Power Conversion Technology Review

Energy Technology Data Exchange (ETDEWEB)

Staunton, R.H.

2003-07-21

In this study, the Oak Ridge National Laboratory (ORNL) is performing a technology review to assess the market for commercially available power electronic converters that can be used to connect microturbines to either the electric grid or local loads. The intent of the review is to facilitate an assessment of the present status of marketed power conversion technology to determine how versatile the designs are for potentially providing different services to the grid based on changes in market direction, new industry standards, and the critical needs of the local service provider. The project includes data gathering efforts and documentation of the state-of-the-art design approaches that are being used by microturbine manufacturers in their power conversion electronics development and refinement. This project task entails a review of power converters used in microturbines sized between 20 kW and 1 MW. The power converters permit microturbine generators, with their non-synchronous, high frequency output, to interface with the grid or local loads. The power converters produce 50- to 60-Hz power that can be used for local loads or, using interface electronics, synchronized for connection to the local feeder and/or microgrid. The power electronics enable operation in a stand-alone mode as a voltage source or in grid-connect mode as a current source. Some microturbines are designed to automatically switch between the two modes. The information obtained in this data gathering effort will provide a basis for determining how close the microturbine industry is to providing services such as voltage regulation, combined control of both voltage and current, fast/seamless mode transfers, enhanced reliability, reduced cost converters, reactive power supply, power quality, and other ancillary services. Some power quality improvements will require the addition of storage devices; therefore, the task should also determine what must be done to enable the power conversion circuits to

Power reserves in the end-user market

International Nuclear Information System (INIS)

Livik, K.; Mo, B.

1994-10-01

Based on a detailed modelling of the end-user electric power market it is evaluated how a selection of energy conservation efforts will affect Norway's system curve for the day of maximum power load. The analysis given in this report is based on empiric load data and statistical analyses of how changing simultaneity in power consumption by the end-users contribute to an aggregated effect on the maximum power of the system. The computer code PMAX was used for the simulation. The following efforts are considered: controlling water heaters in the housing sector, replacing electricity by oil for heating in the housing sector and in the service sector, implementation of temperature control with reduced temperature at night/day in the housing and service sectors, energy conservation in the service sector, heat recovery in the service sector. Transition from electricity to oil in heating is the effort which most strongly affects the energy consumption and power load on the day of peak power load. The discussion excludes energy-intensive industries, pumps and boilers. 11 refs., 16 figs., 6 tabs

Marketing and Service Activities of the German Power Suppliers. Results of a recent investigation; Marketing-Outsourcing als strategische Option fuer Energieversorger. Effizienzsteigerungen und Kostensenkungen

Energy Technology Data Exchange (ETDEWEB)

Ruppert, G.; Sothmann, P. [MCG Marketing Consulting Group GmbH, Frankfurt am Main (Germany)

2006-07-03

Service activities have always played an important role for power suppliers. Facing the growing competitive environment, the enterprises' activities were given new directions, with more strength. The EU energy service regulation gives this subject even more importance. VDEW (Association of the Electricity Industry) has been regularly investigating the range of the services offered by the enterprises, for the last time by means of questionnaire in 2005. The findings give a general view of the marketing measures presently used by the enterprises and the services they offer. It was found out that services and special measures of customer care have kept their importance to customer binding and customer acquisition also in 2005.

Power system stabilization by SMES using current-fed pwm power conditioner

International Nuclear Information System (INIS)

Ishikawa, T.; Akita, S.; Taniguchi, H.; Kosho, S.; Tanaka, T.

1988-01-01

A superconducting magnetic energy storage (SMES) unit, consisted of superconducting coil and AC/DC power conditioner, can be used to suppress various kinds of instability that may cause service interruption in electric power system as it has high controllability of input/output electric power. Power system stabilizing ability of SMES has been examined experimentally by using model power system and small SMES unit. Current-fed PWM power conditioner was used to obtain maximum stabilizing effect by controlling active and reactive power simultaneously and independently. Power conditioner configuration, operating characteristics and control scheme for power system stabilization are also described. Results from experiments show the effectiveness of SMES on power system stabilization

An improved basis for evaluating continued service of Category I concrete structures in nuclear power plants

International Nuclear Information System (INIS)

Naus, D.J.; Oland, C.B.; Ellingwood, B.; Mori, Y.; Arndt, E.G.

1992-01-01

The Structural Aging (SAG) Program has the overall objective of preparing technical bases for regulatory criteria which will provide the NRC with potential structural safety issues and acceptance criteria for use in nuclear power plant evaluations for continued service. In meeting this objective three primary activities are underway: (1) development of a structural materials information center containing data and information on the variation of concrete and concrete-related material properties over time; (2) establishment of procedures to make quantitative evaluations of the presence, magnitude, and significance of environmental stressors or aging factors that can impact critical component performance, as well as techniques which can be used for repair of degraded concrete structures; and (3) formulation of a quantitative methodology for performing current condition assessments and making reliability-based life predictions of critical concrete structures in nuclear power plants. Accomplishments to date under each of these tasks are presented

Photovoltaic conference on system services

International Nuclear Information System (INIS)

Burges, Karsten; Freier, Karin; Vincent, Jeremy; Montigny, Marie; Engel, Bernd; Konstanciak, Wilhelm; Makdessi, Georges; Acres, Adrien; Schlaaff, Torsten; Defaix, Christophe

2015-01-01

The French-German office for Renewable energies (OFAEnR) organised a photovoltaic conference on system services and photovoltaic facilities. In the framework of this French-German exchange of experience, about 100 participants have analysed and discussed the regulatory, technical and economical context of system services, their evolution and implementation in the framework of an accelerated development of photovoltaic conversion in both countries. This document brings together the available presentations (slides) made during this event: 1 - Technical Introduction to system services: principles, actors and perspectives (Karsten Burges); 2 - Legal guidelines of EEG (Renewable energy Sources Act) and the System Stability Ordinance as well as future measures for PV grid integration (Karin Freier); 3 - evolution of ancillary services regulation; opening the possibility for new market players to participate in maintaining the system stability (Jeremy Vincent, Marie Montigny); 4 - Paradigm shift for ancillary services: PV as a new stakeholder (Bernd Engel); 5 - Challenges of RES integration (Wilhelm Konstanciak 6 - System services supplied by PV inverters, solutions for frequency and active/reactive power control at the injection point (Georges Makdessi); 7 - Grid disturbance abatement and voltage stability control by monitoring local scale PV production (Adrien Acres); 8 - Flexibly Adaptable Power Plant Controller - The Answer to Various Grid Requirements (Torsten Schlaaff); 9 - ENR-pool project: What kind of business model for ancillary services by PV power plants? (Christophe Defaix)

Joint power control based on service factor for code division multiple access system%TDD-CDMA系统中基于业务统计的联合功率控制算法

Institute of Scientific and Technical Information of China (English)

陈波; 戎蒙恬; 胡威

2008-01-01

An important feature of the traffic in mobile networks is burstiness. Drawbacks of conventional power control algorithms for time division duplex (TDD)-code division multiple access (CDMA) systems are analyzed. A joint power control algorithm based on service factor is presented to address the TDD-CDMA mobile services in the burst mode according to the Markov modulated Bernoulli process. The joint power control equation is derived. A function model is developed to verify the new algorithm and evaluate its performance. Simulation results show that the new power control algorithm can estimate interference strength more precisely, speed up convergence of power control, and enhance power efficiency and system capacity. It is shown that the proposed algorithm is more robust against rink gain changes, and outperforms the reference algorithms.

CNE (Embalse nuclear power plant): probabilistic safety study. Loss of service water. Probabilistic evaluation and analysis through events sequence

International Nuclear Information System (INIS)

Couto, A.J.; Perez, S.S.

1987-01-01

This work is part of a study on the service water systems of the Embalse nuclear power plant from a safety point of view. The faults of service water systems of high and low pressure that can lead to situations threatening the plant safety were analyzed in a previous report. The event 'total loss of low pressure service water' causes the largest number of such conditions. Such event is an operational incident that can lead to an accident situation due to faults in the required process systems or by omission of a procedure. The annual frequency of the event 'total loss of low pressure service water' is calculated. The main contribution comes from pump failure. The evaluation of the accident sequences shows that the most direct way to the liberation of fission products is the loss of steam generators as heat sink. The contributions to small and large LOCA and electric supply loss are analyzed. The sequence that leads to tritium release through boiling of moderator is also evaluated. (Author)

Compliance with technical codes becomes obligatory for receipt of feed-in tariff and ancillary services bonus for wind power plants in Germany

Energy Technology Data Exchange (ETDEWEB)

Boemer, Jens. C. [Ecofys Germany GmbH, Berlin (Germany). Power Systems and Markets Group; Delft Univ. of Technology (Netherlands). Electrical Power Systems Group; Burges, Karsten [Ecofys Germany GmbH, Berlin (Germany). Power Systems and Markets Group; Kumm, Thomas [VDE, Network Technology and Operation Forum (FNN), Berlin (Germany); Poeller, Markus [DIgSILENT GmbH, Gomaringen (Germany)

2009-07-01

The German government aims at a share of electricity generation based on renewable sources (RES-E) of more than 30% by 2020. A major part of this share will be reached by the use of wind power plants (WPP). Therefore, when amending the Renewable Energy Sources Act (EEG) in June 2008, the German government acknowledged the importance of enhanced technical requirements for WPP and announced the development of a respective technical ordinance. For all WPP that go into operation after June 2010, full grid code-compliance becomes a precondition for privileged network access, receipt of feed-in tariff, and extra payments (''ancillary services bonus''). The basis for the technical requirements in the EEG has been laid down by Medium-Voltage (MV)-Directive 2008 and the TransmissionCode 2007. However, the work of the authors - consulting the German government during the development of the technical ordinance - showed that the TransmissionCode 2007 needed careful review and some clarifying specifications were proposed. Eventually, the so called ''Ancillary Services Ordinance'' for wind power plants went into power in July 2009. The interrelation between all three grid codes as well as their specifications and implications for renewable energy sources generators, with special regard to wind power plants, are presented in this paper. (orig.)

Telecommunications: international opportunities for power utilities

Energy Technology Data Exchange (ETDEWEB)

Lewis, A. [Teleglobe Canada, Ottawa, ON (Canada)

1996-08-01

International telecommunications services markets and trends were reviewed in an effort to identify business opportunities for Canadian power utilities. With increasing deregulation in the U.S. and Canada, and other countries around the globe, market opportunities are beginning to open up. In monopoly markets opportunities exist in providing dual infrastructures to upgrade both the power delivery services (frequently poor), and telecommunications. Billing, collection and customer service expertise might be other marketable commodities, perhaps packaged as part of a network provision project as a service to existing power and telecommunications service providers. In countries with directed competition markets local partnerships may be the only vehicle for entering the market. In managed competition markets opportunities were said to exist in cellular radio technology, as well as in switched telephone service, local, long distance, or international. In general, opportunities outside telecommunications-rich North America were considered to have better potential, due to rapid deregulation and higher current growth rates in telecommunications. Careful examination and research of the political and business environment prior to entering any of the potentially fertile areas was advised.

Nuclear power. Volume 2. Nuclear power project management

International Nuclear Information System (INIS)

Pedersen, E.S.

1978-01-01

NUCLEAR POWER PLANT DESIGN is intended to be used as a working reference book for management, engineers and designers, and as a graduate-level text for engineering students. The book is designed to combine theory with practical nuclear power engineering and design experience, and to give the reader an up-to-date view of the status of nuclear power and a basic understanding of how nuclear power plants function. Volume 2 contains the following chapters: (1) review of nuclear power plants; (2) licensing procedures; (3) safety analysis; (4) project professional services; (5) quality assurance and project organization; (6) construction, scheduling, and operation; (7) nuclear fuel handling and fuel management; (8) plant cost management; and (9) conclusion

A framework for cost-based pricing of transmission and ancillary services in competitive electric power markets

International Nuclear Information System (INIS)

Zobian, A.; Ilic, M.D.

1995-01-01

In this paper the authors propose a framework for accurate cost determination and pricing of transmission and ancillary services in competitive electric power markets. The proposed framework is based on their anticipation of the evolving environment and industry structure. They envision the future as a competitive energy market with a centralized control entity that coordinates system activities, prices transmission and ancillary services and controls various system resources. This control entity has control over a certain (pre-defined) geographical area. It is proposed that the system operation and control be kept as they are currently done in control centers, no major change in these functions is required for the proposed pricing strategy. The pricing strategy is divided into two main classes based on time scale separation and firmness, short and long term, firm and interruptible contracts. The approach is based on superposition of different transaction on the network, and a three-part tariff design. The charges are directly related to the impact of each transaction on the system

Controllable Grid Interface for Testing Ancillary Service Controls and Fault Performance of Utility-Scale Wind Power Generation: Preprint

Energy Technology Data Exchange (ETDEWEB)

Gevorgian, Vahan; Koralewicz, Przemyslaw; Wallen, Robb; Muljadi, Eduard

2017-02-01

The rapid expansion of wind power has led many transmission system operators to demand modern wind power plants to comply with strict interconnection requirements. Such requirements involve various aspects of wind power plant operation, including fault ride-through and power quality performance as well as the provision of ancillary services to enhance grid reliability. During recent years, the National Renewable Energy Laboratory (NREL) of the U.S. Department of Energy has developed a new, groundbreaking testing apparatus and methodology to test and demonstrate many existing and future advanced controls for wind generation (and other renewable generation technologies) on the multimegawatt scale and medium-voltage levels. This paper describes the capabilities and control features of NREL's 7-MVA power electronic grid simulator (also called a controllable grid interface, or CGI) that enables testing many active and reactive power control features of modern wind turbine generators -- including inertial response, primary and secondary frequency responses, and voltage regulation -- under a controlled, medium-voltage grid environment. In particular, this paper focuses on the specifics of testing the balanced and unbalanced fault ride-through characteristics of wind turbine generators under simulated strong and weak medium-voltage grid conditions. In addition, this paper provides insights on the power hardware-in-the-loop feature implemented in the CGI to emulate (in real time) the conditions that might exist in various types of electric power systems under normal operations and/or contingency scenarios. Using actual test examples and simulation results, this paper describes the value of CGI as an ultimate modeling validation tool for all types of 'grid-friendly' controls by wind generation.

Allocation of reactive power support, active loss balancing and demand interruption ancillary services in MicroGrids

Energy Technology Data Exchange (ETDEWEB)

Gomes, Mario Helder [Departamento de Engenharia Electrotecnica, Instituto Politecnico de Tomar, Quinta do Contador, Estrada da Serra, 2300 Tomar (Portugal); Saraiva, Joao Tome [INESC Porto and Faculdade de Engenharia da Universidade do Porto, Campus da FEUP, Rua Dr. Roberto Frias, 4200 - 465 Porto (Portugal)

2010-10-15

MicroGrids represent a new paradigm for the operation of distribution systems and there are several advantages as well as challenges regarding their development. One of the advantages is related with the participation of MicroGrid agents in electricity markets and in the provision of ancillary services. This paper describes two optimization models to allocate three ancillary services among MicroGrid agents - reactive power/voltage control, active loss balancing and demand interruption. These models assume that MicroGrid agents participate in the day-ahead market sending their bids to the MicroGrid Central Controller, MGCC, that acts as an interface with the Market Operator. Once the Market Operator returns the economic dispatch of the MicroGrid agents, the MGCC checks its technical feasibility (namely voltage magnitude and branch flow limits) and activates an adjustment market to change the initial schedule and to allocate these three ancillary services. One of the models has crisp nature considering that voltage and branch flow limits are rigid while the second one admits that voltage and branch flow limits are modeled in a soft way using Fuzzy Set concepts. Finally, the paper illustrates the application of these models with a Case Study using a 55 node MV/LV network. (author)

Beliefs concerning the reliability of nuclear power plant in-service inspections; Uskomuksia ydinvoimalaitoksissa suoritettavien tarkastusten luotettavuudesta

Energy Technology Data Exchange (ETDEWEB)

Kettunen, J. [VTT Automation, Espoo (Finland)

1997-01-01

The aim of the study was to investigate belief systems held by the officials responsible for the planning and supervision of NDT operations within the Finnish nuclear industry. They were asked to express their opinions on (1) the reliability of NDT methods in general, (2) the factors influencing the reliability of in-service inspections, and (3) the degree of reliability of the current inspections operations conducted by means of NDT methods in the Finnish nuclear power plants. Another goal of the study was to assess the adequacy of officials` beliefs (or belief systems). The research data was collected by interviewing representatives from Finnish power companies (Imatran Voima Oy and Teollisuuden Voima Oy), independent inspection organisations, and the Finnish Centre for Radiation and Nuclear Safety (STUK). The adequacy of the beliefs expressed was assessed by means of the results obtained from international NDT reliability studies and on the basis of interviewees` own justification. (refs.).

Nuclear power prospects

Energy Technology Data Exchange (ETDEWEB)

NONE

1960-09-15

A survey of the nuclear power needs of the less-developed countries and a study of the technology and economics of small and medium scale power reactors are envisioned by the General Conference. Agency makes its services available to Member States to assist them for their future nuclear power plans, and in particular in studying the technical and economic aspects of their power programs. The Agency also undertakes general studies on the economics of nuclear power, including the collection and analysis of cost data, in order to assist Member States in comparing and forecasting nuclear power costs in relation to their specific situations

Smart grid as a service: a discussion on design issues.

Science.gov (United States)

Chao, Hung-Lin; Tsai, Chen-Chou; Hsiung, Pao-Ann; Chou, I-Hsin

2014-01-01

Smart grid allows the integration of distributed renewable energy resources into the conventional electricity distribution power grid such that the goals of reduction in power cost and in environment pollution can be met through an intelligent and efficient matching between power generators and power loads. Currently, this rapidly developing infrastructure is not as "smart" as it should be because of the lack of a flexible, scalable, and adaptive structure. As a solution, this work proposes smart grid as a service (SGaaS), which not only allows a smart grid to be composed out of basic services, but also allows power users to choose between different services based on their own requirements. The two important issues of service-level agreements and composition of services are also addressed in this work. Finally, we give the details of how SGaaS can be implemented using a FIPA-compliant JADE multiagent system.

Advanced Power Converter for Universal and Flexible Power Management in Future Electricity Network

DEFF Research Database (Denmark)

Iov, Florin; Blaabjerg, Frede; Bassett, R.

2007-01-01

converters for grid connection of renewable sources will be needed. These power converters must be able to provide intelligent power management as well as ancillary services. This paper presents the overall structure and the control aspects of an advanced power converter for universal and flexible power......More "green" power provided by Distributed Generation will enter into the European electricity network in the near future. In order to control the power flow and to ensure proper and secure operation of this future grid, with an increased level of the renewable power, new power electronic...

Roles of the operator and the safety services in nuclear power plant quality assurance

International Nuclear Information System (INIS)

Widmer, M.; Perrot, J.

1985-01-01

With regard to the operation of nuclear power plants, Electricite de France formally recognized in 1973 that it was necessary for safety reasons and economically acceptable to adopt organizational principles of quality assurance that would be applicable both to its own activities and to those of its suppliers. Generally speaking, the form and spirit of the quality assurance programme chosen is based largely on the Code of Practice No. 50-C-QA. In particular, the programme focuses on the flexible character of quality assurance requirements and stresses that in the final analysis product quality depends above all on those to whom the project has been assigned, because it is they who are responsible for meeting the quality objectives set. Ten years of experience with the suppliers of Electricite de France has shown that these suppliers, after some initial difficulty, have been able to adapt the application of quality assurance so as to achieve satisfactory quality as regards both safety and availability. In the case of the French standard nuclear power plants, quality assurance is particularly important thanks to the traceability which it affords and to the allowance for corrective measures which it demands. The safety services normally take action related to quality assurance in three ways: through regulation, the analysis of measures to assure plant safety, and plant supervision. As regards regulation, an order has just been published relating to design, construction and operational quality in base-load nuclear power plants. The requirements laid down in this document incorporate the recommendations of the IAEA Code on quality assurance. (author)

Contribution of service companies

International Nuclear Information System (INIS)

Sole, L. M.; Cortes, A.

2002-01-01

The most influential aspect when choosing the model of contract between Client and Contractor relapses into the maturity reached by both parts. The service supplier will have to show his competence with his resume, not only technical, but also of actual actions concerning availability reliability, maintainability, security, environment and costs. That maturity may have been the reason why most of the service companies, of national scope, that carry out maintenance of nuclear power stations electricity and instrumentation nowadays, are present from the assembly and implementation phases of these nuclear power stations. (Author)

Influence of mechanical cell salvage on red blood cell aggregation, deformability, and 2,3-diphosphoglycerate in patients undergoing cardiac surgery with cardiopulmonary bypass.

Science.gov (United States)

Gu, Y John; Vermeijden, Wytze J; de Vries, Adrianus J; Hagenaars, J Ans M; Graaff, Reindert; van Oeveren, Willem

2008-11-01

Mechanical cell salvage is increasingly used during cardiac surgery. Although this procedure is considered safe, it is unknown whether it affects the red blood cell (RBC) function, especially the RBC aggregation, deformability, and the contents of 2,3-diphosphoglycerate (2,3-DPG). This study examines the following: (1) whether the cell salvage procedure influences RBC function; and (2) whether retransfusion of the salvaged blood affects RBC function in patients. Forty patients undergoing cardiac surgery with cardiopulmonary bypass were randomly allocated to a cell saver group (n = 20) or a control group (n = 20). In the cell saver group, the blood aspirated from the wound area and the residual blood from the heart-lung machine were processed with a continuous-flow cell saver before retransfusion. In the control group this blood was retransfused without processing. The RBC aggregation and deformability were measured with a laser-assisted optical rotational cell analyzer and 2,3,-DPG by conventional laboratory test. The cell saver procedure did not influence the RBC aggregation but significantly reduced the RBC deformability (p = 0.007) and the content of RBC 2,3-DPG (p = 0.032). However, in patients receiving the processed blood, their intraoperative and postoperative RBC aggregation, deformability, and 2,3-DPG content did not differ from those of the control patients. Both groups of patients had a postoperative drop of RBC function as a result of hemodilution. The mechanical cell salvage procedure reduces the RBC deformability and the cell 2,3-DPG content. Retransfusion of the processed blood by cell saver does not further compromise the RBC function in patients undergoing cardiac surgery with cardiopulmonary bypass.

47 CFR 80.215 - Transmitter power.

Science.gov (United States)

2010-10-01

... 47 Telecommunication 5 2010-10-01 2010-10-01 false Transmitter power. 80.215 Section 80.215... MARITIME SERVICES General Technical Standards § 80.215 Transmitter power. (a) Transmitter power shown on the radio station authorization is the maximum power the licensee is authorized to use. Power is...

Control of Power Converters in AC Microgrids

DEFF Research Database (Denmark)

Rocabert, Joan; Luna, Alvaro; Blaabjerg, Frede

2012-01-01

The enabling of ac microgrids in distribution networks allows delivering distributed power and providing grid support services during regular operation of the grid, as well as powering isolated islands in case of faults and contingencies, thus increasing the performance and reliability of the ele......The enabling of ac microgrids in distribution networks allows delivering distributed power and providing grid support services during regular operation of the grid, as well as powering isolated islands in case of faults and contingencies, thus increasing the performance and reliability...

76 FR 36914 - Astoria Generating Company, L.P., NRG Power Marketing LLC, Arthur Kill Power LLC, Astoria Gas...

Science.gov (United States)

2011-06-23

... Generating Company, L.P., NRG Power Marketing LLC, Arthur Kill Power LLC, Astoria Gas Turbine Power LLC... Power Marketing LLC, Arthur Kill Power LLC, Astoria Gas Turbine Power LLC, Dunkirk Power LLC, Huntley... when a document is added to a subscribed docket(s). For assistance with any FERC Online service, please...

Estimation of the Possible Power of a Wind Farm

DEFF Research Database (Denmark)

Mirzaei, Mahmood; Göçmen Bozkurt, Tuhfe; Giebel, Gregor

2014-01-01

the possible power calculated based on the estimated effective wind speed of a down regulated wind farm (the industry standard) is compared against the calculated possible power based on the algorithm presented in the paper. The latter takes into account the eect of the wakes of down regulated turbines......It seems possible to increase competitiveness of wind power plants by offering grid services (also called ancillary services) and enter the wind power plants into the ancillary market. One of the ancillary services is called reserve power, the differential capacity between the generated power...... and the available power in the farm. The total amount of energy that a wind farm can potentially generate is called possible power. It is very important for a wind farm owner to have a relatively accurate estimate of the possible power of the wind farm in order to be able to trade the reserve power. In this paper...

Cooperation of nuclear, thermal and hydroelectric power plants in the power system

International Nuclear Information System (INIS)

1984-01-01

The conference heard 36 papers of which 23 were incorporated in INIS. The subjects discussed were: the development of power industry in Czechoslovakia, methods of statistical analysis of data regarding nuclear power plant operation, the incorporation of WWER nuclear power plants in the power supply system, the standardization of nuclear power plants, the service life of components, use of nuclear energy sources, performance of the reactor accident protection system, the use of nuclear power and heating plants in Hungary, risk analysis, optimization of nuclear power plants, accidents caused by leakage of the primary and secondary circuit. (J.P.)

EPA Facility Registry Service (FRS): Power Plants

Data.gov (United States)

U.S. Environmental Protection Agency — This GIS dataset contains data on power plants, based on the Energy Information Administration's EIA-860 dataset and supplemented with data from EPA's Facility...

Innovating Technological Process for Expanding the Service Life of Underground Power Cables

Directory of Open Access Journals (Sweden)

Tabacaru V.

2016-08-01

Full Text Available As a public power distribution operator on low voltage (023/0.4 kV, medium voltage (6 and 20 kV, and high voltage (110 kV in the territory of Galati County, SDEE Galati serves approximately 240,000 consumers (captive and eligible, domestic and non-domestic For this purpose, in the field of medium voltage underground distribution lines, SDEE Galati manages and operates a volume of approx. 500 km UDL/6kV circuit and approximately 630 km UDL/20 kV circuit. Many of these cables which are still in operation, were manufactured with materials and on the technological level of the ’60s,’70s and ‘80s decades and have reached the end of their service life. Evidence does and incident statistics from these networks in which, every year, one of the "tips" is the medium voltage cables damaged "technical wear" normal operating conditions. The current paper will present the main features of an innovating technological process called SPR (Sustained Pressure Rejuvenation, designed for on-site refurbishing of underground power cable insulation medium and high voltage. The process offers a viable alternative that has proven, over the 25 years of application initially on the American content and now on the worldwide, substantially more cost effective than replacing cables. The paper does not propose detailed presentation of the technological process, but to inform the family of energetics NPS about the existence and the benefits of applying this new technological process to the old cable medium and high voltage.

The Power Trading Agent Competition

NARCIS (Netherlands)

Ketter, W.; Collins, J.; Reddy, P.; Flath, C.; De Weerdt, M.M.

2011-01-01

This is the specification for the Power Trading Agent Competition for 2012 (Power TAC 2012). Power TAC is a competitive simulation that models a “liberalized” retail electrical energy market, where competing business entities or “brokers” offer energy services to customers through tariff contracts,

The Power Trading Agent Competition

NARCIS (Netherlands)

W. Ketter (Wolfgang); J. Collins (John); P. Reddy (Prashant); C. Flath (Christoph); M.M. de Weerdt (Mathijs)

2011-01-01

textabstractThis is the specification for the Power Trading Agent Competition for 2012 (Power TAC 2012). Power TAC is a competitive simulation that models a “liberalized” retail electrical energy market, where competing business entities or “brokers” offer energy services to customers through tariff

Low-Power Wireless Sensor Network Infrastructures

DEFF Research Database (Denmark)

Hansen, Morten Tranberg

Advancements in wireless communication and electronics improving form factor and hardware capabilities has expanded the applicability of wireless sensor networks. Despite these advancements, devices are still limited in terms of energy which creates the need for duty-cycling and low-power protocols...... peripherals need to by duty-cycled and the low-power wireless radios are severely influenced by the environmental effects causing bursty and unreliable wireless channels. This dissertation presents a communication stack providing services for low-power communication, secure communication, data collection......, and network management which enables construction of low-power wireless sensor network applications. More specifically, these services are designed with the extreme low-power scenarios of the SensoByg project in mind and are implemented as follows. First, low-power communication is implemented with Auto...

Unbundling generation and transmission services for competitive electricity markets

International Nuclear Information System (INIS)

Hirst, E.; Kirby, B.

1998-01-01

Ancillary services are those functions performed by the equipment and people that generate, control, and transmit electricity in support of the basic services of generating capacity, energy supply, and power delivery. The Federal Energy Regulatory Commission (FERC) defined such services as those 'necessary to support the transmission of electric power from seller to purchaser given the obligations of control areas and transmitting utilities within those control areas to maintain reliable operations of the interconnected transmission system.' The nationwide cost of ancillary services is about $12 billion a year, roughly 10% of the cost of the energy commodity. More important than the cost, however, is the necessity of these services for bulk-power reliability and for the support of commercial transactions. FERC's landmark Order 888 included a pro forma tariff with provision for six key ancillary services. The Interconnected Operations Services Working Group identified another six services that it felt were essential to the operation of bulk-power systems. Several groups throughput the United States have created or are forming independent system operators, which will be responsible for reliability and commerce. To date, the electricity industry (including traditional vertically integrated utilities, distribution utilities, power markets and brokers, customers, and state and federal regulators) has paid insufficient attention to these services. Although the industry had made substantial progress in identifying and defining the key services, much remains to be doe to specify methods to measure the production, delivery, and consumption of these services; to identify the costs and cost-allocation factors for these services; and to develop market and operating rules for their provision and pricing. Developing metrics, determining costs, and setting pricing rules are important because most of these ancillary services are produced by the same pieces of equipment that

Fermilab 1982. Annual report of the Fermi National Accelerator Laboratory

International Nuclear Information System (INIS)

The state of Fermilab is reviewed for 1982, and summaries are given in the following areas: fabricating energy saver superconducting magnets; present knowledge and future directions in particle physics; accomplishments of Fermilab in a decade of operation 1972 to 1982; a photo essay on the energy saver installation work in the Main Ring Tunnel; a listing of 1982 Fermilab experimental, general, and theoretical publications; and a listing of the 1982 workshop and seminar series

Choosing the Discount Rate for Defense Decisionmaking.

Science.gov (United States)

1976-07-01

a weighted average of the after-personal-income-tax rate of return to savers and the pre- corporate - income - tax cost of capital. Stockfisch calcu].ates...occurs between the corporate and noncorporate sector. Many economists assume 100 percent shifting of the corporate income tax , so if the corporate ...capital is a weighted average of the after-personal-income-tax rate of return to savers and the pre- corporate - income - tax cost of capital. Stockfisch

First Nations Power

Energy Technology Data Exchange (ETDEWEB)

Whitehead, K. [Whitby Hydro, ON (Canada)

2002-07-01

The partnership involving the First Nations of Southern First Nations Secretariat (SFNS) Economic Development Corporation and private sector companies is called First Nations Power (FNP), and is Aboriginal-owned. Business opportunities in the energy sector marketplace are being pursued through FNP. The member organizations of FNP are listed. Operating out of facilities located at Delaware First Nation in Moranviatown, Ontario, FNP utilizes strategic alliances with proven private sector firms and other First Nation organizations to advance its plans. FNP operates in the following fields: advisory services, energy management, transmission and grid connections, distribution and utility administration, retail of products and services, training and development, and power generation. The various projects include hydraulic and alternative energy sources. The business activities are briefly described, as are the energy projects and special projects. A discussion of the First Nations Power Team concludes this presentation.

Health journalism in the service of power: 'moral complacency' and the Hebrew media in the Gaza-Israel conflict.

Science.gov (United States)

Birenbaum-Carmeli, Daphna

2014-05-01

The power of health news as a vehicle in the production of meaning in the service of power is the core of this article. Tracking the media coverage of a medical service, it shows how a routine practice can be invoked at a time of armed conflict so as to enhance a benevolent state image. The case at hand is the medical treatment of Gaza children in Israeli hospitals. A series of Internet searches revealed a group of publications on the subject in the Hebrew media, during and shortly after Israel's assault on Gaza in the winter of 2008-2009. In the press articles the treatments were invariably constituted as the epitome of Israel's compassion towards the enemy's children. This image relied, however, on a simultaneous silencing of other aspects of these treatments, which would have challenged this image. The monolithic depictions give rise to the notion of reversed moral panic or 'moral complacency', wherein the media amplifies a little-known social phenomenon into an epitome of societal values and charges it with significance on a national scale. The article ends with considering some features that possibly render health news an especially convenient domain for state-supportive media presentations. © 2014 The Author. Sociology of Health & Illness © 2014 Foundation for the Sociology of Health & Illness/John Wiley & Sons Ltd.

Managing service excellence. Internal customer service training

International Nuclear Information System (INIS)

McAnulty, P.C.

1991-01-01

WHO ARE OUR CUSTOMERS? Electric Users, regulators, vendors, suppliers, or our own employees? The answer is ALL exclamation point They are all customers. Regardless if they are external or internal customers, one must focus on quality of service delivery in order to maintain customer satisfaction. The most successful companies are quickly realizing that managing SERVICE EX NCE is our only future. For the next decade, the issue of service quality will exceed the issue of productivity. It is very easy to see that the business behind a utility is serving our electric consumers. However, internal customer service - service excellence to employees inside a company is the foundation for success. This paper describes a training program that is being implemented across Duke Power for employees on internal customer service. How we provide service to each other within a company impacts service quality to our external customers. This training refocuses behaviors and perceptions so to concentrate on quality service delivery to our internal customers - our employees. We all have positive and negative experiences with obtaining quality service by either external organizations or internal employees. Therefore, we start with a common foundation. Whether it be a supplier, vendor, or a station administrative group, we have experienced either excellent or poor customer service. All of us have potential in managing the delivery of excellent customer service. However, many of us may need new perspectives so to add depth with which we view and manage service excellence to our internal customers

76 FR 36910 - Astoria Generating Company, L.P., NRG Power Marketing LLC, Arthur Kill Power LLC, Astoria Gas...

Science.gov (United States)

2011-06-23

... Generating Company, L.P., NRG Power Marketing LLC, Arthur Kill Power LLC, Astoria Gas Turbine Power LLC... Generating Company, L.P., NRG Power Marketing LLC, Arthur Kill Power LLC, Astoria Gas Turbine Power [[Page... subscribed docket(s). For assistance with any FERC Online service, please e-mail [email protected

Environmental Assessment for power marketing policy for Southwestern Power Administration

Energy Technology Data Exchange (ETDEWEB)

1993-12-01

Southwestern Power Administration (Southwestern) needs to renew expiring power sales contracts with new term (10 year) sales contracts. The existing contracts have been in place for several years and many will expire over the next ten years. Southwestern completed an Environmental Assessment on the existing power allocation in June, 1979 (a copy of the EA is attached), and there are no proposed additions of any major new generation resources, service to discrete major new loads, or major changes in operating parameters, beyond those included in the existing power allocation. Impacts from a no action plan, proposed alternative, and market power for less than 10 years are described.

Environmental Assessment for power marketing policy for Southwestern Power Administration

International Nuclear Information System (INIS)

1993-01-01

Southwestern Power Administration (Southwestern) needs to renew expiring power sales contracts with new term (10 year) sales contracts. The existing contracts have been in place for several years and many will expire over the next ten years. Southwestern completed an Environmental Assessment on the existing power allocation in June, 1979 (a copy of the EA is attached), and there are no proposed additions of any major new generation resources, service to discrete major new loads, or major changes in operating parameters, beyond those included in the existing power allocation. Impacts from a no action plan, proposed alternative, and market power for less than 10 years are described

French codes and standards for design, construction and in-service inspection of nuclear power plants

International Nuclear Information System (INIS)

Hugot, G.; Grandemange, J. M.

1995-01-01

In 1970, France decided that its future power plants would be of the Pressurized Water Reactor type. This choice proved to be successful since it resulted in more than 60 PWR units in operation or under construction in France and abroad. At the beginning of such a program, the French engineering and manufacturing industry, the national electrical utility and the Safety Authorities had to face the many challenges imposed by the implementation of an imported technology. The government reorganised the licensing process. FRAMATOME, the NSSS vendor, and EDF (Electricite de France), the national utility, decided to create 'AFCEN', the French Association for Design and Construction Rules for Nuclear Island Components. These rules, the RCC's (Regles de Construction et de conception), which are approved by French Safety Authorities deal with mechanical and electrical equipment as well as with nuclear fuel and civil works. They are now being supplemented by in service inspection rules, the RSE's (Regles d'inspection en Service). The paper presents these Codes and their main updating following experience of application, technical progress and evolution of standards. Status of discussion concerning reference to European standardisation and developments of rules applicable to the EPR project will also be discussed

Activities of the control services; Activites des services du controle

Energy Technology Data Exchange (ETDEWEB)

NONE

1997-12-31

This paper summarizes the control activities of the technical service of electric power and big dams: annual examinations, administrative instructions (draining, floods, granting renewal), decennial examinations etc. (J.S.)

Environmental impacts of nuclear power plants and the tasks of meteorology

International Nuclear Information System (INIS)

Rak, J.; Skulec, S.; Tomlain, J.

1984-01-01

The system of meteorological service is presented which is part of the nuclear power plant monitoring system. Tasks are described which the meteorological service fulfils in routine nuclear power plant operation and in case of accident. The meteorological service also studies the potential impacts of heat emissions and water effluents on the environment of nuclear power plants. (E.S.)

18 CFR 37.7 - Auditing Transmission Service Information.

Science.gov (United States)

2010-04-01

... 18 Conservation of Power and Water Resources 1 2010-04-01 2010-04-01 false Auditing Transmission Service Information. 37.7 Section 37.7 Conservation of Power and Water Resources FEDERAL ENERGY REGULATORY... SYSTEMS § 37.7 Auditing Transmission Service Information. (a) All OASIS database transactions, except...

76 FR 28767 - Desert Southwest Customer Service Region-Rate Order No. WAPA-152

Science.gov (United States)

2011-05-18

... DEPARTMENT OF ENERGY Western Area Power Administration Desert Southwest Customer Service Region..., Desert Southwest Customer Service Region, Western Area Power Administration, P.O. Box 6457, Phoenix, AZ... Customer Service Region, Western Area Power Administration, P.O. Box 6457, Phoenix, AZ 85005-6457, (602...

Power supplies and equipment for military field research: lessons from the British Service Dhaulagiri Research Expedition 2016.

Science.gov (United States)

Howard, Matt; Bakker-Dyos, J; Gallagher, L; O'Hara, J P; Woods, D; Mellor, A

2018-02-01

The British Service Dhaulagiri Research Expedition (BSDMRE) took place from 27 March to 31 May 2016. The expedition involved 129 personnel, with voluntary participation in nine different study protocols. Studies were conducted in three research camps established at 3600, 4600 and 5140 m and involved taking and storing blood samples, cardiac echocardiography and investigations involving a balance plate. Research in this remote environment requires careful planning in order to provide a robust and resilient power plan. In this paper we aim to report the rationale for the choices we made in terms of power supply, the equipment used and potential military applicability. This is a descriptive account from the expedition members involved in planning and conducting the medical research. Power calculations were used to determine estimates of requirement prior to the expedition. The primary sources used to generate power were internal combustion engine (via petrol fuelled electric generators) and solar panels. Having been generated, power was stored using lithium-ion batteries. Special consideration was given to the storage of samples taken in the field, for which electric freezers and dry shippers were used. All equipment used functioned well during the expedition, with the challenges of altitude, temperature and transport all overcome due to extensive prior planning. Power was successfully generated, stored and delivered during the BSDMRE, allowing extensive medical research to be undertaken. The challenges faced and overcome are directly applicable to delivering military medical care in austere environments, and lessons learnt can help with the planning and delivery of future operations, training exercises or expeditions. © Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2018. All rights reserved. No commercial use is permitted unless otherwise expressly granted.

76 FR 34692 - Astoria Generating Company, L.P., NRG Power Marketing LLC, Arthur Kill Power LLC, Astoria Gas...

Science.gov (United States)

2011-06-14

... Generating Company, L.P., NRG Power Marketing LLC, Arthur Kill Power LLC, Astoria Gas Turbine Power LLC... Generating Company, L.P., NRG Power Marketing LLC, Arthur Kill Power LLC, Astoria Gas Turbine Power LLC... notification when a document is added to a subscribed docket(s). For assistance with any FERC Online service...

In-service inspection for nuclear power plants

International Nuclear Information System (INIS)

1980-01-01

The Safety Guides are recommendations issued by the Agency for use by Member States in the context of their own nuclear safety requirements. Design consideration, in-service examination, test requirements, repair and replacement, equipment, methods and techniques and also administrative aspects are given in this issue

The Temporality of Power and the Power of Temporality

DEFF Research Database (Denmark)

Costas, Jana; Grey, Christopher

2014-01-01

This paper extends existing understandings of power, resistance and subjectivity in professional service organizations by developing an analysis of how these relate to temporality. Drawing in particular on Hoy’s reading of the Foucauldian account of temporality, we conceive of disciplinary power...... regimes and resistance as inherently future-oriented, or, to use Ybema’s term, postalgic. In moving beyond the extant research focus on self-disciplined and/or counter-resistant professional selves, we draw attention to the imaginary future self as an employee response to disciplinary power. In contrast...

A web environment for inspection service

International Nuclear Information System (INIS)

Robles Guemes, N.; Garcia Heras, M.; Cueto-Felgueroso Garcia, C.; Pelaez Gutierrez, J. A.

2013-01-01

The in-service inspection fundamental objective is to maintain the structural integrity of structures, systems and components during the life in the installation service. Nuclear power plants are required to implement a Service inspection program in accordance with the established regulation by the Regulatory body.

Thermoelectric powered wireless sensors for spent fuel monitoring

International Nuclear Information System (INIS)

Carstens, T.; Corradini, M.; Blanchard, J.; Ma, Z.

2011-01-01

This paper describes using thermoelectric generators to power wireless sensors to monitor spent nuclear fuel during dry-cask storage. OrigenArp was used to determine the decay heat of the spent fuel at different times during the service life of the dry-cask. The Engineering Equation Solver computer program modeled the temperatures inside the spent fuel storage facility during its service life. The temperature distribution in a thermoelectric generator and heat sink was calculated using the computer program Finite Element Heat Transfer. From these temperature distributions the power produced by the thermoelectric generator was determined as a function of the service life of the dry-cask. In addition, an estimation of the path loss experienced by the wireless signal can be made based on materials and thickness of the structure. Once the path loss is known, the transmission power and thermoelectric generator power requirements can be determined. This analysis estimates that a thermoelectric generator can produce enough power for a sensor to function and transmit data from inside the dry-cask throughout its service life. (authors)

Price-based control of ancillary services for power balancing

NARCIS (Netherlands)

Bosch, van den P.P.J.; Jokic, A.; Frunt, J.; Kling, W.L.; Nobel, Frank; Boonekamp, P.; Boer, de W.; Hermans, R.M.; Virag, A.

2011-01-01

A reliable and an efficient power system is a necessity for any industrialized society. Governments have to enforce regulations to guarantee that such a power system, in spite of many competing stakeholders, participants, companies, and regulating agencies can be operational. This paper analyzes the

Should the service life of nuclear power plants be limited for technical reasons?; Mela by byt provozni zivotnost jaderne elektrarny z technickych duvodu omezena?

Energy Technology Data Exchange (ETDEWEB)

Schomer, E

1995-03-01

German nuclear power plant operating licenses take into account the fact that the design lifetime of the facilities is 40 years. The technological lifetime, however, is governed by actual ageing processes and operational burden. The service life of nuclear power plants can be extended by replacement of the steam generator and by repair or replacement of the reactor pressure vessel or parts thereof. Attention is also paid to the reactor protection systems. (J.B.). 8 figs.

Life-cycle asset allocation with focus on retirement savings

OpenAIRE

Konicz, Agnieszka Karolina

2013-01-01

We consider optimal asset allocation of a pension saver with uncertain lifetime. The objective is to maximize the expected utility of the retirement savings. The model accounts for characteristics of a pension saver given by her mortality risk, risk attitude, type of retirement contract, trading costs, taxes, and uncertain labor income. The problem is solved using a combination of a multi-stage stochastic linear programming (SLP) model and stochastic optimal control, such that the practical a...

Scaling of Supply Voltage in Design of Energy Saver FIR Filter on 28nm FPGA

DEFF Research Database (Denmark)

Pandey, Bishwajeet; Jain, Vishal; Sharma, Rashmi

2017-01-01

In this work, we are going to analyze the effect of main supply voltage, auxiliary supply voltage, local voltage of different power bank, and supply voltage in GTX transceiver and BRAM on power dissipation of our FIR design using Verilog during implementation on 28nm FPGA. We have also taken three.......33%, 86%, 90.67%, 65.33%, 52%, and 48.67% reduction in IO power dissipation of FIR Filter design on CSG324 package of Artix-7 FPGA family....

Dams. Bulletin of the technical service of electric power and big dams; Barrages. Bulletin du service technique de l`energie electrique et des grands barrages

Energy Technology Data Exchange (ETDEWEB)

Davard, J.

1997-12-31

The Dams bulletin reports on technical news concerning big French dams in operation. This issue comprises 5 papers. Two of them are examples of granting problems which led to the dismantling of the dams of Kernansquillec (Cotes d`Armor, France) and Maisons-Rouges (Indre-et-Loire, France) for economical and environmental reasons. The 3 other papers concern the life of French dams (technical control reports of the French dams in operation), the activities of the control service (annual inspections, preparation of draining operations, renewing of granting), and some general information (organisation of competent authorities, colloquium reports, hydro-power production during the first quarter of 1997). (J.S.)

Possible Power Estimation of Down-Regulated Offshore Wind Power Plants

DEFF Research Database (Denmark)

Gögmen, Tuhfe

The penetration of offshore wind power is continuously increasing in the Northern European grids. To assure safety in the operation of the power system, wind power plants are required to provide ancillary services, including reserve power attained through down-regulating the wind farm from its...... power plant. The developed procedure, the PossPOW algorithm, can also be used in the wind farm control as it yields a real-time wind farm power curve. The modern wind turbines have a possible power signal at the turbine level and the current state of the art is to aggregate those signals to achieve...... the wind farm scale production capacity. However the summation of these individual signals is simply an over-estimation for the wind power plant, due to reduced wake losses during curtailment. The determination of the possible power with the PossPOW algorithm works as follows: firstly the second...

Why (and how) to regulate power exchanges in the EU market integration context?

International Nuclear Information System (INIS)

Meeus, Leonardo

2011-01-01

The European Union (EU) market integration is leading to increasingly monopolistic electricity market infrastructures, which has opened a debate on the regulation of these so-called power exchanges. In this paper, we start by stating that there are two types of power exchanges in Europe, i.e. 'merchant' and 'cost-of-service regulated' power exchanges. We then discuss how regulation can be used to better align their incentives with the main power exchange tasks. We conclude that adopting the cost-of-service regulated model for all power exchanges in Europe could be counterproductive in the current context, but that regulation can help ensure that the benefits of the EU market integration materialize. Promising regulatory actions include tempering the reinforced market power of power exchanges, and quality-of-service regulation for the ongoing cooperation among power exchanges to organize trade across borders. - Research highlights: → Market integration is leading to increasingly monopolistic electricity market infrastructures. → Regulation can help tempering the market power of these so-called power exchanges in Europe. → Cost-of-service regulation for all power exchanges could however be counterproductive. → More promising is to subject cooperation among power exchanges to quality of service regulation.

Air quality analysis for the Western Area Power Administration's 2004 Power Marketing Plan Environmental Impact Statement

International Nuclear Information System (INIS)

Glantz, C.S.; Dagle, J.E.; Bilyard, G.R.

1997-01-01

The Western Area Power Administration (Western) markets and transmits electric power throughout 15 western states. Western's Sierra Nevada Customer Service Region (Sierra Nevada Region) markets approximately 1,480 megawatts (MW) of firm power (plus 100 MW of seasonal peaking capacity) from the Central Valley Project (CVP) and other resources. Western's mission is to sell and deliver electricity generated from these resources. Western's capacity and energy sales must be in conformance with the laws that govern its sale of electrical power. Further, Western's hydropower operations at each facility must comply with minimum and maximum flows and other constraints set by other regulatory agencies. The Sierra Nevada Region proposes to develop a marketing plan that defines the products and services it would offer beyond the year 2004 and the eligibility and allocation criteria for its electric power resources. Because determining levels of long-term firm power resources to be marketed and subsequently entering into contracts for the delivery of related products and services could be a major Federal action with potentially significant impacts to the human environment, the 2004 Power Marketing Plan Environmental Impact Statement (2004 EIS) is being prepared. Decisions made by the Sierra Nevada Region on how and when to supply power to its customers would influence the operation of power plants within the Western Systems Coordinating Council (WSCC). If the resources affected are thermal resources, this could in turn affect the amount, timing, and location of pollutant emissions to the air at locations throughout the western United States. This report has been produced in conjunction with the 2004 EIS to provide a more detailed discussion of the air quality implications of the 2004 power marketing plan

Military power requirements and backup power considerations

International Nuclear Information System (INIS)

Botts, T.E.

1986-01-01

All US Air Force (USAF) facilities have certain critical power requirements that must be met in order to carry out their mission successfully. Internal USAF studies have shown that the mission can degrade precipitously as the available power decreases below the mission critical level. Now, more than ever before, the military and private industry are finding that certain functions, such as automated data processing and automated process control, respond catastrophically to power reductions. Furthermore, increased reliance on electrical power means, in the case of the Air Force, that critical power requirements are anticipated to increase by half over the next 15 yr. For these reasons and others, the USAF is investigating several means of improving the availability of electric power under adverse conditions above that which can be provided by an off-base supplier. Among the approaches to this problem being pursued at this time are a program to improve all sorts of generator sets on a service-wide basis and the Multimegawatt Terrestrial Power (MTP) Program, which is pursuing the design and testing of a small dedicated nuclear power source to provide critical mission power. The purpose of this paper is to provide some insight into some of the issues associated with USAF power programs

Satellite services system overview

Science.gov (United States)

Rysavy, G.

1982-01-01

The benefits of a satellite services system and the basic needs of the Space Transportation System to have improved satellite service capability are identified. Specific required servicing equipment are discussed in terms of their technology development status and their operative functions. Concepts include maneuverable television systems, extravehicular maneuvering unit, orbiter exterior lighting, satellite holding and positioning aid, fluid transfer equipment, end effectors for the remote manipulator system, teleoperator maneuvering system, and hand and power tools.

Geothermal. Section 2: Products and services

International Nuclear Information System (INIS)

Anon.

1991-01-01

This is a directory of companies providing products and services in the area of geothermal power. The subheadings of the directory include developers and owner operators, equipment manufacturers, measuring instruments and controls, consulting services, engineering and construction, operation and maintenance, project management, repair, and financial and legal services

Hydropower. Section 2: Products and services

International Nuclear Information System (INIS)

Anon.

1991-01-01

This is a directory of companies providing products and services in the area of hydroelectric power. The subheadings of the directory include developers and owner operators, equipment manufacturers, measuring instruments and controls, consulting services, engineering and construction, operation and maintenance, project management, repair, and financial and legal services

Windpower. Section 2: Products and services

International Nuclear Information System (INIS)

Anon.

1991-01-01

This is a directory of companies providing products and services in the area of wind power. The subheadings of the directory include developers and owner operators, equipment manufacturers, measuring instruments and controls, consulting services, engineering and construction, operation and maintenance, project management, repair, and financial and legal services

Investigating power control in autonomous power systems with increasing wind power penetration

Energy Technology Data Exchange (ETDEWEB)

Margaris, Ioannis D. [National Technical Univ. of Athens (Greece). Electric Energy Systems Lab.; Hansen, Anca D.; Sorensen, Poul [Risoe National Laboratory, Roskilde (Denmark). Wind Energy Dept.; Hatziargyriou, Nikos D. [National Technical Univ. of Athens (Greece). Electric Energy Systems Lab.; Public Power Corporation S.A., Athens (Greece)

2009-07-01

Increasing levels of wind penetration in autonomous power systems has set intensively high standards with respect to wind turbine technology during the last years. Special features of non-interconnected power systems make security issues rather critical, as the operation of large wind farms like conventional power plants is becoming a necessity. This paper includes the study case of Rhodos island, in Greece, where rapidly increasing wind penetration has started to impose serious security issues for the immediate future. The scenarios studied here correspond to reference year of study 2012 and include wind farms with three different wind turbine technologies - namely Doubly Fed Induction Generator (DFIG), Permanent Magnet Synchronous Generator (PMSG) and Active Stall Induction Generator (ASIG) based wind turbines. Aggregated models of the wind farms are being used and results for different load cases are being analyzed and discussed. The ability of wind farms to assist in some of the power system control services traditionally carried out by conventional synchronous generation is being investigated and discussed. The power grid of the island, including speed governors and automatic voltage regulators, is simulated in the dedicated power system simulation program Power Factory from DIgSILENT. (orig.)

Periodical in-service inspection as part of individual program of quality assurance of steam generators and pressurizers of WWER 440 nuclear power plant

International Nuclear Information System (INIS)

Kawalec, M.

1982-01-01

The manufacturers of equipment for nuclear power plants in the Czechoslovak Socialist Republic are obligated to process so-called individual programs of quality assurance in order to secure the quality of selected equipment in nuclear power. These programmes should include the evaluation of the design of the individual equipments with regard to the implementation of in-service inspection. The main problems are discussed related to the processing of the program of quality assurance for the steam generator and pressurizer. To solve these problems it is necessary that the general project designer should make a classification of the components according to safety categories and that the manufacturers should determine the weak points of the design on the basis of an analysis of the design of individual component nodes. On the basis of such an analysis it is then necessary to evaluate the existing design of the scale of in-service inspections and to decide whether or not new inspection methods should be added. (Z.M.)

Evaluation of the Super Efficient Refrigerator Program (SERP) in the Bonneville Power Administration service territory

Energy Technology Data Exchange (ETDEWEB)

Lee, A.D.; Conger, R.L.

1996-06-01

The Super Efficient Refrigerator Program (SERP) is a collaborative utility program intended to transform the market for energy-efficient and environmentally friendly refrigerators. it is one of the first examples of large-scale {open_quotes}market transformation{close_quotes} energy efficiency program. This report documents the evaluation of SERP ({open_quotes}the Program{close_quotes}) in the Bonneville Power Administration`s (Bonneville`s) service territory. Pacific Northwest National Laboratory (PNNL) conducted this evaluation for Bonneville. This study includes the process evaluation, preliminary impact evaluation, and market transformation assessment. It is based on site visits and interviews with refrigerator dealers and manufacturers, industry data, and Bonneville information. Results from this study are compared with those from a parallel study that examines the Program across the 24 participating utilities.

76 FR 8730 - Desert Southwest Customer Service Region-Rate Order No. WAPA-151

Science.gov (United States)

2011-02-15

... DEPARTMENT OF ENERGY Western Area Power Administration Desert Southwest Customer Service Region.... Jack Murray, Rates Manager, Desert Southwest Customer Service Region, Western Area Power Administration... ancillary service rates for the Desert Southwest Customer Service Region in accordance with section 302 of...

Electric Vehicles in Power Systems with 50% Wind Power Penetration

DEFF Research Database (Denmark)

Østergaard, Jacob; Foosnæs, Anders; Xu, Zhao

2009-01-01

will be an important balancing measure to enable the Danish government’s energy strategy, which implies 50% wind power penetration in the electric power system. An EV will be a storage device for smoothing power fluctuations from renewable resources especially wind power and provide valuable system services...... for a reliable power system operation. Cost-benefit analysis shows that intelligent bidirectional charging – vehicle to grid (V2G) – provides a socio-economic profit of 150 million Euro/year in the Danish electric power system in 2025 assuming that 15% of the Danish road transport need is supplied by electricity....... This paper analyse the potential for using EVs in Denmark and identify the benefits of the electric power system with high wind power generation by intelligent charging of the EVs. Based on the analysis important technology gabs are identified, and the corresponding research and development initiatives...

The 2018 Power Trading Agent Competition

NARCIS (Netherlands)

W. Ketter (Wolfgang); J. Collins (John); M.M. de Weerdt (Mathijs)

2017-01-01

markdownabstractThis is the specification for the Power Trading Agent Competition for 2018 (Power TAC 2018). Power TAC is a competitive simulation that models a “liberalized” retail electrical energy market, where competing business entities or “brokers” offer energy services to customers through

The 2013 Power Trading Agent Competition

NARCIS (Netherlands)

W. Ketter (Wolfgang); J. Collins (John); P. Reddy (Prashant); M.M. de Weerdt (Mathijs)

2013-01-01

textabstractThis is the specification for the Power Trading Agent Competition for 2013 (Power TAC 2013). Power TAC is a competitive simulation that models a “liberalized” retail electrical energy market, where competing business entities or “brokers” offer energy services to customers through tariff

The 2016 Power Trading Agent Competition

NARCIS (Netherlands)

W. Ketter (Wolfgang); J. Collins (John); M.M. de Weerdt (Mathijs)

2016-01-01

markdownabstractThis is the specification for the Power Trading Agent Competition for 2016 (Power TAC 2016). Power TAC is a competitive simulation that models a “liberalized” retail electrical energy market, where competing business entities or “brokers” offer energy services to customers through

The 2017 Power Trading Agent Competition

NARCIS (Netherlands)

W. Ketter (Wolfgang); J. Collins (John); M.M. de Weerdt (Mathijs)

2017-01-01

markdownabstractThis is the specification for the Power Trading Agent Competition for 2017 (Power TAC 2017). Power TAC is a competitive simulation that models a “liberalized” retail electrical energy market, where competing business entities or “brokers” offer energy services to customers through

The 2012 Power Trading Agent Competition

NARCIS (Netherlands)

W. Ketter (Wolfgang); J. Collins (John); P. Reddy (Prashant); M.M. de Weerdt (Mathijs)

2012-01-01

textabstractThis is the specification for the Power Trading Agent Competition for 2012 (Power TAC 2012). Power TAC is a competitive simulation that models a “liberalized” retail electrical energy market, where competing business entities or “brokers” offer energy services to customers through tariff

The 2015 Power Trading Agent Competition

NARCIS (Netherlands)

W. Ketter (Wolfgang); J. Collins (John); P. Reddy (Prashant); M.M. de Weerdt (Mathijs)

2015-01-01

markdownabstractThis is the specification for the Power Trading Agent Competition for 2015 (Power TAC 2015). Power TAC is a competitive simulation that models a “liberalized” retail electrical energy market, where competing business entities or “brokers” offer energy services to customers through

The 2014 Power Trading Agent Competition

NARCIS (Netherlands)

W. Ketter (Wolfgang); J. Collins (John); P. Reddy (Prashant); M.M. de Weerdt (Mathijs)

2014-01-01

textabstractThis is the specification for the Power Trading Agent Competition for 2014 (Power TAC 2014). Power TAC is a competitive simulation that models a “liberalized” retail electrical energy market, where competing business entities or “brokers” offer energy services to customers through tariff

Hierarchy of on-orbit servicing interfaces

Science.gov (United States)

Moe, Rud V.

1989-01-01

A series of equipment interfaces is involved in on-orbit servicing operations. The end-to-end hierarchy of servicing interfaces is presented. The interface concepts presented include structure and handling, and formats for transfer of resources (power, data, fluids, etc.). Consequences on cost, performance, and service ability of the use of standard designs or unique designs with interface adapters are discussed. Implications of the interface designs compatibility with remote servicing using telerobotic servicers are discussed.

Racism in Medicine: Shifting the Power.

Science.gov (United States)

Olayiwola, J Nwando

2016-05-01

Medicine has historically been a field where the provider of the service (physician, nurse) has a significant amount of power as compared with the recipient of the service (the patient). For the most part, this power is relatively consistent, and the power dynamic is rarely disrupted. In this essay, I share a personal experience in which a racist rant by a patient seemingly reverses the power dynamic. As the physician, I faced the realization that I may not have as much power as I believed, but fortunately I had some tools that allowed for my resilience. It is my hope that this paper will strengthen other family physicians and professional minorities that are victims of racism, discrimination, and prejudice for their race, sex, ability, sexual orientation, religion, and other axes of discrimination. © 2016 Annals of Family Medicine, Inc.

Improvement of in-service inspection in nuclear power plants

International Nuclear Information System (INIS)

2004-07-01

During the nuclear power plant's (NPPs) operating lifetime, the operating organisation should examine the systems, structures and components (SSCs) for possible deterioration so as to determine whether they are acceptable for continued safe operation or whether remedial measures should be taken. In-service inspection (ISI) provides the systematic framework for these examinations. An effective ISI programme ensures both that the safety of the plant is not adversely affected after the commencement of operation and that the levels of reliability and availability of all plant SSCs remain in accordance with the assumptions and intent of the design and, consequently, a cost effective electricity generation is guaranteed. This report was prepared under one of the IAEA projects, 'Integrated NPP life cycle management including decommissioning'. The main objective of an integrated life cycle management programme is to enable NPPs to compete, without compromising safety, successfully in the changing energy markets throughout their service life and to facilitate life extension and eventual decommissioning through improved engineering, technological, economic and managerial actions. The Technical Working Group on NPP Life Management and other advisory groups nominated by the Member States provide recommendations on high priority needs of Member States in this area. The purpose of this TECDOC is to: discuss and evaluate the status of ISI and its evolution in NPPs of IAEA Member States; discuss and evaluate the criteria for effective ISI and the constitutive elements; discuss and evaluate the implication of the introduction of risk informed ISI (RI-ISI) concepts; generate a common recommendation as to how to benefit from utilising the potential of RI-ISI concepts for further development and, possibly, improvement of ISI effectiveness. The specific concept of this report is to treat the two key issues, i.e. inspection qualification and RI-ISI, and their complementarities, to

Why (and how) to regulate power exchanges in the EU market integration context?

Energy Technology Data Exchange (ETDEWEB)

Meeus, Leonardo, E-mail: leonardo.meeus@eui.e [Florence School of Regulation, Robert Schuman Centre for Advanced Studies, European University Institute, Via Boccaccio 151, Florence (Italy); Electrical Engineering Department (ESAT-ELECTA), KULeuven, Kasteelpark Arenberg 10, Heverlee (Belgium)

2011-03-15

The European Union (EU) market integration is leading to increasingly monopolistic electricity market infrastructures, which has opened a debate on the regulation of these so-called power exchanges. In this paper, we start by stating that there are two types of power exchanges in Europe, i.e. 'merchant' and 'cost-of-service regulated' power exchanges. We then discuss how regulation can be used to better align their incentives with the main power exchange tasks. We conclude that adopting the cost-of-service regulated model for all power exchanges in Europe could be counterproductive in the current context, but that regulation can help ensure that the benefits of the EU market integration materialize. Promising regulatory actions include tempering the reinforced market power of power exchanges, and quality-of-service regulation for the ongoing cooperation among power exchanges to organize trade across borders. - Research highlights: {yields} Market integration is leading to increasingly monopolistic electricity market infrastructures. {yields} Regulation can help tempering the market power of these so-called power exchanges in Europe. {yields} Cost-of-service regulation for all power exchanges could however be counterproductive. {yields} More promising is to subject cooperation among power exchanges to quality of service regulation.

Microstructure and susceptibility to HIBC of 10H2M steel exposed to service conditions of boilers in fossil power plants

International Nuclear Information System (INIS)

Lunarska, E.; Nikiforow, K.; Zielinski, W.; Kurzydlowski, K.J.

2004-01-01

Mechanical properties, microstructure and hydrogen permeation through 10H2M ferrite pearlite steel from boilers of power station being in-service for up to 100000 hours have been systematically analysed in order to correlate the change in susceptibility to HIBC with microstructure features. The change of the pearlite volume fraction, the carbide morphology and the ferrite dislocation structure as a function of in-service time has been evaluated by SEM and TEM analysis. Susceptibility to HIBC has been estimated in the especially elaborated electrochemical measurements of hydrogen permeation. The correlation has been found between the microstructure features and the hydrogen permeation parameters describing the susceptibility to hydrogen induced cracking of steel exploited in water-steam environment. (author)

Evaluating the power supply challenge and possible solutions

International Nuclear Information System (INIS)

Dalton, J.

2003-01-01

This presentation highlighted Ontario's need for additional electric power generating capacity and proposed solutions to encourage traders and marketers to invest in the electricity market and new power projects. The author notes that Ontario's Bill 210 reduced forward market activity. Further government intervention is seen as a risk by investors. New entrants are also concerned with the market dominant position of Ontario Power Generation. Conditions are not currently in place for new generation investment to occur on a strictly market basis. Currently, the market need is driven by the assumption that Pickering 'A' nuclear power generating facility will return to service. Without the Pickering units, Ontario will need additional generating capacity. This presentation also outlined the services offered by Navigant Consulting, a global management firm that offers financial, policy, and economic consulting services to the energy industries. Navigant will provide an Ontario Wholesale Market Briefing Service four times per year. The service will review wholesale market pricing and demand levels since market opening. It will also review recent developments of the Ontario power market, including status of market reform initiatives, market rule changes, and project announcements. The implications of Bill 210 and wholesale market performance since market opening will be assessed with particular attention to market risks and opportunities within the new market structure. 3 tabs., 3 figs

Power Oscillation Damping from VSC-HVDC Connected Offshore Wind Power Plants

DEFF Research Database (Denmark)

Zeni, Lorenzo; Eriksson, Robert; Goumalatsos, Spyridon

2016-01-01

The implementation of power oscillation damping service on offshore wind power plants connected to onshore grids by voltage-source-converter-based high voltage direct current transmission is discussed. Novel design guidelines for damping controllers on voltage-source converters and wind power plant...... regarding real wind power plants are discussed: 1) robustness against control/communication delays; 2) limitations due to mechanical resonances in wind turbine generators; 3) actual capability of wind power plants to provide damping without curtailing production; and 4) power-ramp rate limiters....... controllers are derived, using phasor diagrams and a test network model and are then verified on a generic power system model. The effect of voltage regulators is analyzed, which is important for selecting the most robust damping strategy. Furthermore, other often disregarded practical implementation aspects...

Modernization of turbines in nuclear power plants

International Nuclear Information System (INIS)

Harig, T.

2005-01-01

An ongoing goal in the power generation industry is to maximize the output of currently installed assets. This is most important at nuclear power plants due to the large capital investments that went into these plants and their base loaded service demands. Recent trends in the United States show a majority of nuclear plants are either obtaining, or are in the process of obtaining NRC approvals for operating license extensions and power uprates. This trend is evident in other countries as well. For example, all Swedish nuclear power plants are currently working on projects to extend their service life and maximize capacity through thermal uprate and turbine-generator upgrade with newest technology. The replacement of key components with improved ones is a means of optimizing the service life and availability of power plants. Economic advantages result from increased efficiency, higher output, shorter startup and shutdown times as well as reduced outage times and service costs. The rapid advances over recent years in the development of calculation programs enables adaptation of the latest blading technology to the special requirements imposed by steam turbine upgrading. This results in significant potential for generating additional output with the implementation of new technology, even without increased thermal power. In contrast to maintenance and investment in pure replacement or repair of a component with the primary goal of maintaining operability and reliability, the additional output gained by upgrading enables a return on investment to be reaped. (orig.)

Understanding and Monitoring Cloud Services

NARCIS (Netherlands)

Drago, Idilio

2013-01-01

Cloud services have changed the way computing power is delivered to customers. The advantages of the cloud model have fast resulted in powerful providers. However, this success has not come without problems. Cloud providers have been related to major failures, including outages and performance

The management of the radioactive waste generated by the EDF nuclear power plants in service

International Nuclear Information System (INIS)

Lantes, B.; Beguin, St.

2011-01-01

From the very beginning of France's nuclear power programme, EDF has developed industrial-scale management of the waste it produces, which has constantly progressed in line with changes in the regulations and the available technology. This management process, improved thanks to feedback and experience, ensures that any risk of exposure, at every stage, from production to final disposal, is controlled. The guidelines adopted by EDF for sustainable management of its waste are as follows: -) reduce the quantity of waste, from the production stage and then through recycling and reprocessing; -) sort waste according to its nature and activity level, so that it can be processed and packaged appropriately and the appropriate long-term management solution implemented; -) package waste as soon as it is produced to prevent any risk of dispersion; -) store waste, pending decay or the availability of an appropriate disposal solution; -) transport and place waste in repositories, keeping it away from Man and the environment by means of engineered or natural barriers for as long as required for the radioactivity to decay to an acceptable level. Regarding short-lived waste produced during operating and maintenance activities at power plants in service, EDF currently implements fully-integrated industrial management solutions which are constantly being optimised in conjunction with its industrial partners. (authors)

After-installation service, a contribution to enhanced economic efficiency of reactors

International Nuclear Information System (INIS)

Bilger, H.

1996-01-01

After-installation service agreements are concluded in general for the following plant systems or tasks: power operation, inspection and repair during outages, plant enhancements (retrofitting), instrumentation and control (software). The paper gives various examples selected from power plant practice in Germany, showing that service contracts are a major factor contributing to maintaining economic efficiency, or enhancing it. Examples of nuclear power plant management abroad relying on service contracts are also given (USA, France, Japan). (orig./HP) [de

Concentrating Solar Power Projects - Saguaro Power Plant | Concentrating

Science.gov (United States)

States Location: Red Rock, Arizona (Southwest USA) Owner(s): Arizona Public Service (100%) Technology Status: Currently Non-Operational Country: United States City: Red Rock State: Arizona County: Pinal : Organic Rankine Power Cycle Pressure: 323.0 psi Cooling Method: Wet cooling Turbine Efficiency: 20.7

Kraftwerk Union (KWU) nuclear fuel service

International Nuclear Information System (INIS)

Knaab, H.; Knecht, K.; Garzarolli, F.

1977-01-01

Activities started with the commissioning of the first German nuclear power stations have led to the present form of the nuclear fuel customer service. In the meantime, based on these tasks numerous test and working methods were developed and applied which are now available to operators of nuclear power station. The paper describes the most important methods and instruments and surveys the nuclear fuel service tasks carriedout to date. Past experience has shown that detailed knowledge of design, fabrication as well as the possibility to compose observations with investigations of engineering and hot cell laboratories are prerequisites for successful service performance. The expected trend towards increasing frequency of service activities in the next few years must be taken into account by a continuous expansion in the number of the qualified personnel. It will become necessary for the coordination of the work at an increasing number of reactor plants to conclude long-term service agreements with the customer. (orig.) [de

Reactive Power Pricing Model Considering the Randomness of Wind Power Output

Science.gov (United States)

Dai, Zhong; Wu, Zhou

2018-01-01

With the increase of wind power capacity integrated into grid, the influence of the randomness of wind power output on the reactive power distribution of grid is gradually highlighted. Meanwhile, the power market reform puts forward higher requirements for reasonable pricing of reactive power service. Based on it, the article combined the optimal power flow model considering wind power randomness with integrated cost allocation method to price reactive power. Meanwhile, considering the advantages and disadvantages of the present cost allocation method and marginal cost pricing, an integrated cost allocation method based on optimal power flow tracing is proposed. The model realized the optimal power flow distribution of reactive power with the minimal integrated cost and wind power integration, under the premise of guaranteeing the balance of reactive power pricing. Finally, through the analysis of multi-scenario calculation examples and the stochastic simulation of wind power outputs, the article compared the results of the model pricing and the marginal cost pricing, which proved that the model is accurate and effective.

47 CFR 80.1015 - Power supply.

Science.gov (United States)

2010-10-01

... 47 Telecommunication 5 2010-10-01 2010-10-01 false Power supply. 80.1015 Section 80.1015... MARITIME SERVICES Radiotelephone Installations Required by the Bridge-to-Bridge Act § 80.1015 Power supply. (a) There must be readily available for use under normal load conditions, a power supply sufficient...

Analysis of the Effects of a Flexible Ramping Ancillary Service Product on Power System Operations: Preprint

Energy Technology Data Exchange (ETDEWEB)

Krad, Ibrahim; Ibanez, Eduardo; Ela, Erik

2015-10-19

The recent increased interest in utilizing variable generation (VG) resources such as wind and solar in power systems has motivated investigations into new operating procedures. Although these resources provide desirable value to a system (e.g., no fuel costs or emissions), interconnecting them provides unique challenges. Their variable, non-controllable nature in particular requires significant attention, because it directly results in increased power system variability and uncertainty. One way to handle this is via new operating reserve schemes. Operating reserves provide upward and downward generation and ramping capacity to counteract uncertainty and variability prior to their realization. For instance, uncertainty and variability in real-time dispatch can be accounted for in the hour-ahead unit commitment. New operating reserve methodologies that specifically account for the increased variability and uncertainty caused by VG are currently being investigated and developed by academia and industry. This paper examines one method inspired by the new operating reserve product being proposed by the California Independent System Operator. The method is based on examining the potential ramping requirements at any given time and enforcing those requirements via a reserve demand curve in the market-clearing optimization as an additional ancillary service product.

Canadian Power directory 2000

International Nuclear Information System (INIS)

1999-06-01

The directory supplies information on power project developers (small hydro, gas cogeneration, small cogeneration, combined cycle, wood waste/biomass, municipal solid waste and other); consultants (lawyers, accountants, financial, building energy systems, other); service suppliers (engineering, project management, construction, environmental, insurance, surveyors, training, water treatment, other); financiers (equity, venture capital, institutional lenders, other institutions, joint venture, other); equipment suppliers (generators, turbines, boilers, piping, etc., pumps, engines, gensets, electrical, control systems, other); provincial utilities, regulators and agencies; independent energy associations; gas suppliers; power suppliers; resource groups and trade organizations; biomass fuels; district heating and cooling; energy service companies; wind energy; solar energy; and European and international listings

IAEA Catalogue of Services for Nuclear Infrastructure Development. Rev. 1, April 2014

International Nuclear Information System (INIS)

2014-04-01

This IAEA Catalogue offers a wide range of services to Member States embarking on a new nuclear power programme or expanding an existing one. A new IAEA Catalogue of Services for Nuclear Infrastructure Development helps Member States to identify and request IAEA assistance for national organizations at different stages of the development or expansion of a nuclear power programme. This IAEA Catalogue of Services is presented in two tables. It is based on the IAEA Milestones Approach for nuclear power infrastructure development, documented in 'Milestones in the Development of a National Infrastructure for Nuclear Power' (IAEA Nuclear Energy Series NG-G-3.1). The two tables allow users to identify and select available IAEA services by: i) The three phases of the IAEA Milestones Approach, or ii) Organizations typically involved in the development of a nuclear power programme: the government / Nuclear Energy Programme Implementing Organization (NEPIO), the regulatory body and the owner operator of a nuclear power plant. This Catalogue includes information on the following IAEA services: i) Workshops / Training Courses; ii) Expert Missions / Advisory Services; iii) Review Missions / Peer Reviews; iv) Training tools and networks. The Catalogue lists both existing IAEA services and those being developed for the 19 issues to be addressed in developing a national nuclear infrastructure. Each existing service is linked to a relevant IAEA webpage that either describes a particular service or gives practical examples of the type of assistance that the Agency offers (e.g. workshops or missions). The owners of these webpages can be contacted for more detailed information or to request assistance. This IAEA Catalogue of Services will be updated regularly

Service & non-profit marketing

Directory of Open Access Journals (Sweden)

Stanković Čedomir

2002-01-01

Full Text Available Services are dominantly untouchable products which cannot be physically owned. Services promotion is difficult for its untouchables. Personal sale is very powerful in service companies because customers must interact with employees. Price is very important for service's companies. It has psychological role, economic role and it creates attitude for goal achievement. Marketing goal for nonprofit organizations is to get an answer from target market Development of marketing strategies of nonprofit organizations consists of defining and analyzing target market and creating and maintaining marketing mix. In nonprofit organizations product is usually an idea or a service. Promotion in nonprofit organizations is very important. Personal sale, promotional sale, advertising and publicity are used for communicating an idea and informing people about services.

The scheme optimization and management innovation for the first containment integrated in-service test of nuclear power plant

International Nuclear Information System (INIS)

Wang Haiwei; Yang Gang

2014-01-01

The containment integrated test is a large-scale, high risk and very difficult test in pressurized water reactor nuclear power plants. By simulating peak pressure inside the containment in DESIGN-BASIS accident conditions, measuring the total leakage rate of the containment with the peak pressure, and implementing the structure inspection test on several pressure levels, the containment's performance can be verified. Containment integrated test is an important witness point supervised by NNSA. The test results crucially decide the reactor to be started or not. The containment integrated test in 301 overhaul is the first in-service test of Unit 3. By the experience of the same 6 former tests in Qinshan Second Nuclear Power Plant and the feedback from other plants, the test scheme get more scientific and the organization management more standardized. This article discusses the containment integrated test in 301 overhaul and summarizes the experience to provide some references for the following containment integrated tests in the future. (authors)

46 CFR 111.10-4 - Power requirements, generating sources.

Science.gov (United States)

2010-10-01

... ELECTRIC SYSTEMS-GENERAL REQUIREMENTS Power Supply § 111.10-4 Power requirements, generating sources. (a) The aggregate capacity of the electric ship's service generating sources required in § 111.10-3 must... or sources must be sufficient to supply those services necessary to provide normal operational...

Nuclear power. Volume 2: nuclear power project management

International Nuclear Information System (INIS)

Anon.

1980-01-01

The following topics are discussed: review of nuclear power plants; licensing procedures; safety analysis; project professional services; quality assurance and project organization; construction, scheduling and operation; construction, scheduling and operation; nuclear fuel handling and fuel management; and plant cost management. 116 references, 115 figures, 33 tables

A transaction assessment method for allocation of transmission services

Science.gov (United States)

Banunarayanan, Venkatasubramaniam

The purpose of this research is to develop transaction assessment methods for allocating transmission services that are provided by an area/utility to power transactions. Transmission services are the services needed to deliver, or provide the capacity to deliver, real and reactive power from one or more supply points to one or more delivery points. As the number of transactions increase rapidly in the emerging deregulated environment, accurate quantification of the transmission services an area/utility provides to accommodate a transaction is becoming important, because then appropriate pricing schemes can be developed to compensate for the parties that provide these services. The Allocation methods developed are based on the "Fair Resource Allocation Principle" and they determine for each transaction the following: the flowpath of the transaction (both real and reactive power components), generator reactive power support from each area/utility, real power loss support from each area/utility. Further, allocation methods for distributing the cost of relieving congestion on transmission lines caused by transactions are also developed. The main feature of the proposed methods is representation of actual usage of the transmission services by the transactions. The proposed method is tested extensively on a variety of systems. The allocation methods developed in this thesis for allocation of transmission services to transactions is not only useful in studying the impact of transactions on a transmission system in a multi-transaction case, but they are indeed necessary to meet the criteria set forth by FERC with regard to pricing based on actual usage. The "consistency" of the proposed allocation methods has also been investigated and tested.

Electric industry restructuring, ancillary services, and the potential impact on wind

Energy Technology Data Exchange (ETDEWEB)

Kirby, B.; Hirst, E. [Oak Ridge National Lab., TN (United States); Parsons, B.; Porter, K. [National Renewable Energy Lab., Golden, CO (United States)] [and others

1997-12-31

The new competitive electric power environment raises increased challenges for wind power. The DOE and EPRI wind programs have dealt extensively with the traditional vertically integrated utility planning and operating environment in which the host utility owns the generation (or purchases the power) and provides dispatch and transmission services. Under this traditional environment, 1794 MW of wind power, principally in California, have been successfully integrated into the U.S. electric power system. Another 4200 MW are installed elsewhere in the world. As issues have arisen, such as intermittency and voltage regulation, they have been successfully addressed with accepted power system procedures and practices. For an intermittent, non-dispatchable resource such as wind, new regulatory rules affecting power transmission services, raise questions about which ancillary services wind plants will be able to sell, which they will be required to purchase, and what the economic impacts will be on individual wind projects. This paper begins to look at issues of concern to wind in a restructured electric industry. The paper first briefly looks at the range of unbundled services and comments on their unique significance to wind. To illustrate the concerns that arise with restructuring, the paper then takes a more detailed look at a single service: regulation. Finally, the paper takes a brief look at technologies and strategies that could improve the competitive position of wind.

The year 2000 power plant

International Nuclear Information System (INIS)

Roman, H.T.

1989-01-01

Every utility seeks extended service life from its existing power plants before building new ones. It is not easy to justify a new power plant. The licensing and cost of new plants have become uncertain. In response to these conditions, electric utilities are undertaking plant life-extension studies and, in some cases, reconditioning/upgrading old power plants to significantly increase useful service life. Other technologies like robotics and artificial intelligence/expert systems are also being developed to reduce operating and maintenance (O and M) expenses, to remove workers from potentially hazardous environments, and to reduce plant downtime. Together, these steps represent an interim solution, perhaps providing some relief for the next few decades. However, there are serious physical and economic limits to retrofitting new technology into existing power plants. Some old plants will simply be beyond their useful life and require retirement. In nuclear plants, for instance, retrofit may raise important and time-consuming licensing/safety issues. Based on their robotics and artificial intelligence experience, the authors of this article speculate bout the design of the year 2000 power plant - a power plant they feel will naturally incorporate liberal amounts of robotic and artificial intelligence technologies

Virginia power nuclear power station engineer training program

International Nuclear Information System (INIS)

Williams, T.M.; Haberstroh-Timpano, S.

1987-01-01

In response to the Institute of Nuclear Power Operations (INPO) accreditation requirements for technical staff and manager, Virginia Power developed the Nuclear Power Station Engineer Training Programs (NPSETP). The NPSETP is directed toward enhancing the specific knowledge and skills of company engineers, especially newly hired engineers. The specific goals of the program are to promote safe and reliable plant operation by providing engineers and appropriate engineering technicians with (1) station-specific basic skills; (2) station-specific specialized skills in the areas of surveillance and test, plant engineering, nuclear safety, and in-service inspection. The training is designed to develop, maintain, and document through demonstration the required knowledge and skills of the engineers in the identified groups at North Anna and Surry Power Stations. The program responds to American National Standards Institute, INPO, and US Nuclear Regulatory Commission standards

Effects of a power shortage in the Tokyo metropolitan area on awareness of nuclear power generation and power savings behavior

International Nuclear Information System (INIS)

Kitada, Atsuko

2004-01-01

The shutdown of a number of nuclear power stations of the Tokyo Electric Power Company in the summer of 2003 caused a power shortage problem in the Tokyo Metropolitan area. To examine the effects of the power shortage, in September 2003 a survey was conducted in the service areas of the Kansai Electric Power Company (Kansai region) and the Tokyo Electric Power Company (Kanto region). This survey was part of a wider opinion survey begun in 1993 concerning nuclear power generation. The results of the September 2003 survey are as follows: The degree of recognition of the power shortage problem in the Metropolitan area was high, with 40% of respondents in the Kansai region and nearly 70% in the Kanto region understanding that the shortage was caused by the shutdown of several nuclear power station. The overall awareness of nuclear power generation was little affected in both the Kansai and Kanto regions, though the sense of a shortage of the generating capacity had been raised slightly. Once respondents knew about the power shortage problem, they estimated the likelihood of an occurrence of large-scale service interruption to be low, nearly at an even chance, and they had been only slightly worried about it, essentially viewing the problem optimistically. In the Kanto region, where public relations activities for power savings had been actively pursued, the frequency of experiencing exposure to such public relations activities was remarkably higher than in the Kansai region. The relation between exposure to public relations activities for power savings and power savings behavior was analyzed using quantification method II. Analysis results suggest that public relations activities for power savings in the Kanto region had the effect of urging power savings behavior. However, the difference in the rate of putting power savings behavior into practice was small between the Kanto and Kansai regions, indicating that public relation activities for power savings in the Kanto

Advantages of butterfly valves for power plants

International Nuclear Information System (INIS)

Lapadat, J.T.

1977-01-01

Butterfly valves are increasingly used in nuclear power plants. They are used in CANDU reactors for class 2 and 3 service, to provide emergency and tight shutoff valves for all inlets and outlets of heat exchangers and all calandria penetrations. Guidelines for meeting nuclear power plant valve specifications are set out in ASME Section 3, Nuclear Power Plant Components. Some details of materials of construction, type of actuator, etc., for various classes of nuclear service are tabulated in the present article. The 'fishtail' butterfly valve is an improved design with reduced drag, as is illustrated and explained. (N.D.H.)

Product and Service Directory 2004 Issue

International Nuclear Information System (INIS)

Agnihotri, N.K.

2003-01-01

This annual November-December issue of the Nuclear Plant Journal serves as directory of information resources on products and services related to the nuclear power industry. The directory consists of over 3,000 products and services submitted by over 300 suppliers worldwide during October and November 2003. The issue is divided into 4 main areas: Products and Services, Corporate Capabilities, and Suppliers

Why I like power cuts...

CERN Multimedia

Computer Security Team

2012-01-01

Accidental power cuts - a permanent nuisance when running accelerators or computing services, since it takes a lot of time to recover from them. While I feel very sorry for those who are under pressure to get their service running again and deeply regret the loss of down-time and availability, I must admit that I like power cuts: power cuts make computers reboot! And rebooting computers at CERN means all the pending software patches are automatically applied.   But don’t think I am egotistic enough to endorse power cuts. Not necessarily! I am already happy if you regularly patch your computer(s) yourself, where regularly means at least once a month: · If you run a centrally or locally managed Windows computer, give that small orange blinking “CMF” icon in the taskbar a chance in the evening to apply all the pending patches. Also, let it initiate a reboot at the end! · If you have a personal computer with your own Windows operating system, ...

KNF's fuel service technologies and experiences

International Nuclear Information System (INIS)

Shin, Jung Cheol; Kwon, Jung Tack; Kim, Jaeik; Park, Jong Youl; Kim, Yong Chan

2009-01-01

In Korea, since 1978, the commercial nuclear power plant was operated. After 10 years, from 1988, the nuclear fuel was produced by KNF (Korea Nuclear Fuel). The Fuel Service Team was established at KNF in 1995. Through the technical self reliance periods in cooperate with advanced foreign companies for 5 years, KNF has started to carry out fuel service activities onsite in domestic nuclear power plants. By ceaseless improving and advancing our own methodologies, after that, KNF is able to provide the most safe and reliable fuel repair services and poolside examinations including the root cause analysis of failed fuels. Recently, KNF developed the fuel cleaning system using ultrasonic technique for crud removal, and the CANDU fuel sipping system to detect a failed fuel bundle in PHWR. In this paper, all of KNF's fuel service technologies are briefly described, and the gained experience in shown

18 CFR 284.284 - Blanket certificates for unbundled sales services.

Science.gov (United States)

2010-04-01

... 18 Conservation of Power and Water Resources 1 2010-04-01 2010-04-01 false Blanket certificates for unbundled sales services. 284.284 Section 284.284 Conservation of Power and Water Resources... Sales by Interstate Pipelines § 284.284 Blanket certificates for unbundled sales services. (a...

A Poisson-Fault Model for Testing Power Transformers in Service

Directory of Open Access Journals (Sweden)

Dengfu Zhao

2014-01-01

Full Text Available This paper presents a method for assessing the instant failure rate of a power transformer under different working conditions. The method can be applied to a dataset of a power transformer under periodic inspections and maintenance. We use a Poisson-fault model to describe failures of a power transformer. When investigating a Bayes estimate of the instant failure rate under the model, we find that complexities of a classical method and a Monte Carlo simulation are unacceptable. Through establishing a new filtered estimate of Poisson process observations, we propose a quick algorithm of the Bayes estimate of the instant failure rate. The proposed algorithm is tested by simulation datasets of a power transformer. For these datasets, the proposed estimators of parameters of the model have better performance than other estimators. The simulation results reveal the suggested algorithms are quickest among three candidates.

Automatic meter reading and PowerPlus services: Concept to implementation

Energy Technology Data Exchange (ETDEWEB)

Perks, D.R. [Alberta Power Ltd., Edmonton, AB (Canada)

1995-12-31

The Distribution Control System Inc.`s Two Way Automatic Communication System (TWACS) was implemented with GE Canada`s 170S automatic meter reader (AMR) at Alberta Power Ltd. Core and extended features are being marketed as PowerPlus{sup TM.} The technology used in the systems, design philosophy, systems components, outbound communication, inbound communication, throughput, and AMR were described. Objectives for the pilot project were to test reliability, accuracy and cost of implementation. Scope of the pilot, and project results were presented. Business aspects of PowerPlus{sup TM }marketing were described. Implementation schedule, constraints, technical problems, training, communication plan, strategy and 1994 year end status of the project were reviewed. Plans for continued development were described. It was predicted that the versatility of the TWACS system, and hard work of every department of Alberta Power will ensure that the implementation program will complete success. 5 figs.

Public service obligation in liberalized electricity markets. Who is the provider of last resort?; Jiyuka jidai ni okeru kokyo service gimu. Dare ga last resort kyokyusha to naru k

Energy Technology Data Exchange (ETDEWEB)

Maruyama, M. [Central Research Inst. of Electric Power Industry, Tokyo (Japan)

2000-03-01

Electric power is an asset indispensable to the modern society, and it is needed to secure the universal service. The universal service has been secured by obliging the existing electric utilities operators to supply electric power. However, since the systematical reform in the electric utility business extends down to the liberalization in the retailing sector, it becomes impossible to oblige electric power supply service to supply the same as conventionally. Even under these circumstances, to continuously secure the universal service, a method is considered for obliging special suppliers (last resort suppliers) to supply electric power to users who are unable to be supplied from anyone. This paper studies who should be the last resort supplier using mainly samples from the U.S. (translated by NEDO)

QoE Power-Efficient Multimedia Delivery Method for LTE-A

OpenAIRE

Mushtaq, M. Sajid; Mellouk, Abdelhamid; Augustin, Brice; Fowler, Scott

2016-01-01

The fastest growing of multimedia services overfuture wireless communication system demand more networkresources, efficient delivery of multimedia service with highusers satisfaction, and power optimization of User Equipments(UEs). The resources and power optimization are significant infuture mobile computing systems, because emerging multimediaservices consume more resources and power. The 4G standard ofLTE-A wireless system has adopted the Discontinuous Reception(DRX) method to extend and o...

Programming NET Web Services

CERN Document Server

Ferrara, Alex

2007-01-01

Web services are poised to become a key technology for a wide range of Internet-enabled applications, spanning everything from straight B2B systems to mobile devices and proprietary in-house software. While there are several tools and platforms that can be used for building web services, developers are finding a powerful tool in Microsoft's .NET Framework and Visual Studio .NET. Designed from scratch to support the development of web services, the .NET Framework simplifies the process--programmers find that tasks that took an hour using the SOAP Toolkit take just minutes. Programming .NET

Flexible Generation of Pervasive Web Services using OSGi Declarative Services and OWL Ontologies

DEFF Research Database (Denmark)

Hansen, Klaus Marius; Zhang, Weishan; Fernandes, Joao

2008-01-01

There is a growing trend to deploy web services in pervasive computing environments. Implementing web services on networked, embedded devices leads to a set of challenges, including productivity of development, efficiency of web services, and handling of variability and dependencies of hardware...... and software platforms. To address these challenges, we developed a web service compiler called Limbo, in which Web Ontology Language (OWL) ontologies are used to make the Limbo compiler aware of its compilation context such as device hardware and software details, platform dependencies, and resource....../power consumption. The ontologies are used to configure Limbo for generating resource-efficient web service code. The architecture of Limbo follows the Blackboard architectural style and Limbo is implemented using the OSGi Declarative Services component model. The component model provides high flexibility...

Maximizing electrical power supply using FACTS devices

OpenAIRE

Lehmann, Karsten; Bent, Russell; Pan, Feng

2015-01-01

Modern society critically depends on the services electric power provides. Power systems rely on a network of power lines and transformers to deliver power from sources of power (generators) to the consumers (loads). However, when power lines fail (for example, through lightning or natural disasters) or when the system is heavily used, the network is often unable to fulfill all of the demand for power. While systems are vulnerable to these failures, increasingly, sophisticated control devices...

A Tariff for Reactive Power

Energy Technology Data Exchange (ETDEWEB)

Kueck, John D [ORNL; Kirby, Brendan J [ORNL; Li, Fangxing [ORNL; Tufon, Christopher [Pacific Gas and Electric Company; Isemonger, Alan [California Independent System Operator

2008-07-01

Two kinds of power are required to operate an electric power system: real power, measured in watts, and reactive power, measured in volt-amperes reactive or VARs. Reactive power supply is one of a class of power system reliability services collectively known as ancillary services, and is essential for the reliable operation of the bulk power system. Reactive power flows when current leads or lags behind voltage. Typically, the current in a distribution system lags behind voltage because of inductive loads such as motors. Reactive power flow wastes energy and capacity and causes voltage droop. To correct lagging power flow, leading reactive power (current leading voltage) is supplied to bring the current into phase with voltage. When the current is in phase with voltage, there is a reduction in system losses, an increase in system capacity, and a rise in voltage. Reactive power can be supplied from either static or dynamic VAR sources. Static sources are typically transmission and distribution equipment, such as capacitors at substations, and their cost has historically been included in the revenue requirement of the transmission operator (TO), and recovered through cost-of-service rates. By contrast, dynamic sources are typically generators capable of producing variable levels of reactive power by automatically controlling the generator to regulate voltage. Transmission system devices such as synchronous condensers can also provide dynamic reactive power. A class of solid state devices (called flexible AC transmission system devices or FACTs) can provide dynamic reactive power. One specific device has the unfortunate name of static VAR compensator (SVC), where 'static' refers to the solid state nature of the device (it does not include rotating equipment) and not to the production of static reactive power. Dynamic sources at the distribution level, while more costly would be very useful in helping to regulate local voltage. Local voltage regulation would

47 CFR 80.917 - Reserve power supply.

Science.gov (United States)

2010-10-01

... power supply must be adequately treated to prevent freezing or overheating consistent with the season... 47 Telecommunication 5 2010-10-01 2010-10-01 false Reserve power supply. 80.917 Section 80.917... MARITIME SERVICES Compulsory Radiotelephone Installations for Small Passenger Boats § 80.917 Reserve power...

Coordinated Frequency Control of Wind Turbines in Power Systems with High Wind Power Penetration

DEFF Research Database (Denmark)

Tarnowski, Germán Claudio

The integration of large amounts of wind power in power systems presents huge challenges. In particular, with the increase of wind power generation, more regulation reserves would be necessary, the capability of the power system to offer conventional regulating power would be reduced...... particular views. These models were developed and verified during this work, basedaround a particular manufacturer’s wind turbine and on said isolated power system withwind power. The capability of variable speed wind turbines for providing Inertial Response is analysed. To perform this assessment, a control...... generation were studied considering a large share of wind power in the system. Results show the abilities of the architectures to manage the variability of the generated wind power, reducing the impact on the grid frequency and providing suitable frequency regulation service when required. The coordination...

TEDS Base Station Power Amplifier using Low-Noise Envelope Tracking Power Supply

DEFF Research Database (Denmark)

Høyerby, Mikkel Christian Wendelboe; Andersen, Michael A. E.

2009-01-01

This paper demonstrates a highly linear and efficient TETRA enhanced data service (TEDS) base-station RF power amplifier (RFPA). Based on the well-known combination of an envelope tracking (ET) power supply and a linear class-A/B RFPA, adequate adjacent channel power ratio (ACPR) and wideband noise...... experimentally with a 9.6-dB peak-to-average 50-kHz 16 quadrature amplitude modulation TEDS carrier, the setup providing 44-dBm (25 W) average RF output power at 400 MHz with 44% dc-to-RF efficiency state-of-the-art ACPR of less than ${-}$67 dBc, switching noise artifacts around ${-}$ 85 dBc, and an overall rms...

Remote controlled ultrasonic pre-service and in-service inspections of reactor pressure vessels

International Nuclear Information System (INIS)

Mueller, G.

1990-01-01

The first mechanised in-service inspection of the reactor pressure vessel on unit one of Eskom's Koeberg nuclear power station has been carried out. Since 1968 a whole range of manipulators to carry out remote controlled ultrasonic inspections of nuclear power station equipment has been developed. The inspection of a reactor pressure vessel using a central mast manipulator is described. 3 figs., 1 ill

Independent Energy's Solar thermal products and services listing

International Nuclear Information System (INIS)

Anon.

1991-01-01

This article is a listing of companies offering products and services for the development of solar thermal electric power plants. The listing provides the company name under a heading describing the product or service the company provides. The products and services covered by the listing include developers and owner/operators, manufacturers of equipment, instruments and controls, consulting services, engineering and construction, and financial and legal services

21 CFR 890.3710 - Powered communication system.

Science.gov (United States)

2010-04-01

... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Powered communication system. 890.3710 Section 890.3710 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED... communication system. (a) Identification. A powered communication system is an AC- or battery-powered device...

76 FR 59682 - Desert Southwest Customer Service Region-Western Area Lower Colorado Balancing Authority-Rate...

Science.gov (United States)

2011-09-27

... DEPARTMENT OF ENERGY Western Area Power Administration Desert Southwest Customer Service Region... CONTACT: Mr. Jack Murray, Rates Manager, Desert Southwest Customer Service Region, Western Area Power... Customer Service Region Network Integration Transmission Service Rate Schedules PD-NTS3 and INT-NTS3 for P...

Tariffs on power trading

International Nuclear Information System (INIS)

Van de Water, C.J.

1995-01-01

For optimal use of power systems, transmission services must be independent from production. Moreover the costs of electrical energy transmission should be well known and be paid according to a tariff system approximating to the real network costs. These two conditions for power trading will lead to an optimal power system. In a competitive power production market, the transmission and distribution companies will remain monopolistic because they are the only facilitators of power trading. The pricing signals of the transmission and distribution costs determine the playing field for the competitors. These are production offers and bidders. The transmission pricing must for that reason be simple, correct and based on marginal costs to make optimal use of the system

Nuclear utility structure. Use of nuclear service companies

International Nuclear Information System (INIS)

Ring, L.E.

1980-01-01

The feasibility of utilities incorporating service companies to construct and maintain nuclear power plants is analyzed. Responsibilities of the service companies and the public opinion of the concept are discussed

Privatization and Political Power in Representative Democracy

DEFF Research Database (Denmark)

Hansen, Morten Balle

One of the main endeavors within ”New Public Management” (NPM) since the 1980s has been to encourage various forms of privatization in the public sector. In recent years, the involvement of private players in the provision of services in Danish municipalities has thus been increased, which makes...... it important to study the consequences of this development. In the present article, privatization is understood as the use of private service providers to provide services and focus is on what privatization means for the power of local political players. The point of departure is an expectation that a high...... degree of privatization can have far-reaching consequences for the distribution of local political power. This is illustrated empirically by a questionnaire survey of 896 municipal leaders. The main findings are that the local political actors generally have less power in municipalities with high degrees...

Balancing power: A grounded theory study on partnership of academic service institutes.

Science.gov (United States)

Heshmati Nabavi, Fatemeh; Vanaki, Zohreh; Mohammadi, Eesa; Yazdani, Shahram

2017-07-01

Governments and professional organizations have called for new partnerships between health care providers and academics to improve clinical education for the benefit of both students and patients. To develop a substantive grounded theory on the process of forming academic-service partnerships in implementing clinical education, from the perspective of academic and clinical nursing staff members and managers working in Iranian settings. The participants included 15 hospital nurses, nurse managers, nurse educators, and educational managers from two central universities and clinical settings from 2009 to 2012. Data were collected through 30 in-depth, semi-structure interviews with the individual participants and then analyzed using the methodology of Strauss and Corbin's grounded theory. Utilizing "balancing power" as the core variable enabled us to integrate the concepts concerning the partnership processes between clinical and educational institutes. Three distinct and significant categories emerged to explain the process of partnership: 1) divergence, 2) conflict between educational and caring functions, and 3) creation of balance between educational and caring functions. In implementing clinical education, partnerships have been formed within a challenging context in Iran. Conflict between clinical and educational functions was the main concern of both sides of the partnership in forming a collaborative relationship, with our findings emphasizing the importance of nursing educators' role in the establishment of partnership programs.

Ancillary services provided by PV power plants

Directory of Open Access Journals (Sweden)

Antonio PIERNO

2016-07-01

Full Text Available Renewable energy sources are widely utilized in distributed generation systems, and, recently, they are also considered for providing ancillary services. The paper is focused on PV plants, a survey of the most interesting papers published in the literature in the last decade is reported and the main characteristics of the technical proposals, with their advantages and limits, are evidenced. The results are schematically shown in a table that immediately gives the opportunity to be aware of what was already done, representing a reference tool.

Bee Power 21

National Research Council Canada - National Science Library

Lamberson, Jeffrey

2003-01-01

.... Naval Facilities Engineering Command (NAVFAC) has much to offer the current Naval strategy, and in keeping with its tradition of contribution and service to the fleet, will want to align its strategic plan with the Sea Power 21 vision...

Colombian ancillary services and international connections: Current weaknesses and policy challenges

International Nuclear Information System (INIS)

Carvajal, S.X.; Serrano, J.; Arango, S.

2013-01-01

Ancillary services are required to maintain the unity, stability, and quality of power systems. In Colombia these services are required to operate the national power system and the international connections with the neighboring countries. The system is influenced by factors ranging from system's topology to social and political aspects, such as the large number of terrorist attacks. In light of these particularities, we consider Colombia as a learning lab for ancillary services in the region. Colombia's power system relies on three ancillary services for its operation, namely frequency regulation, voltage control, and blackstart service. From 2010 Special Protection Systems were also added. In this paper we first analyze the technical aspects, operational restrictions, financial management, and the most relevant regulatory conditions of these ancillary services of the SIN. We also take into consideration the main regulatory characteristics and statistical data related to energy exchanges that have taken place between Colombia and Venezuela and Ecuador. Thereafter, we depict the main weaknesses and policy challenges that Colombia must address in order to increase the effectiveness and coverage of ancillary services in both the SIN and in the international interconnections. Finally, we propose new market oriented regulations to encourage investments and new tools for international connections. - Highlights: ► Blackout of 2007 forces Colombian regulator to improve security of power system. ► Four ancillary services are currently used for secure operation of Colombian system. ► Special Protection Systems service added in 2010. ► Frequency control is the only remunerated service in Colombia. ► Legislation should exist for remuneration of voltage control and black start services.

Arm's Length Provision of Public Services

DEFF Research Database (Denmark)

Bennedsen, Morten; Schultz, Christian

We analyze the economic consequences of strategic delegation of the right to decide between public or private provision of governmental service and/or the authority to negotiate and renegotiate with the chosen service provider. Our model encompass both bureaucratic delegation from a government...... contracts. The bargaining effect improves the bargaining position vis a vis a private firm with market power and leads to a lower price for the service...

Culture and concepts of power.

Science.gov (United States)

Torelli, Carlos J; Shavitt, Sharon

2010-10-01

Five studies indicate that conceptualizations of power are important elements of culture and serve culturally relevant goals. These studies provide converging evidence that cultures nurture different views of what is desirable and meaningful to do with power. Vertical individualism is associated with a conceptualization of power in personalized terms (i.e., power is for advancing one's personal status and prestige), whereas horizontal collectivism is associated with a conceptualization of power in socialized terms (i.e., power is for benefiting and helping others). Cultural variables are shown to predict beliefs about appropriate uses of power, episodic memories about power, attitudes in the service of power goals, and the contexts and ways in which power is used and defended. Evidence for the cultural patterning of power concepts is observed at both the individual level and the cultural-group level of analysis.

Heterogeneous characters modeling of instant message services users' online behavior.

Science.gov (United States)

Cui, Hongyan; Li, Ruibing; Fang, Yajun; Horn, Berthold; Welsch, Roy E

2018-01-01

Research on temporal characteristics of human dynamics has attracted much attentions for its contribution to various areas such as communication, medical treatment, finance, etc. Existing studies show that the time intervals between two consecutive events present different non-Poisson characteristics, such as power-law, Pareto, bimodal distribution of power-law, exponential distribution, piecewise power-law, et al. With the occurrences of new services, new types of distributions may arise. In this paper, we study the distributions of the time intervals between two consecutive visits to QQ and WeChat service, the top two popular instant messaging services in China, and present a new finding that when the value of statistical unit T is set to 0.001s, the inter-event time distribution follows a piecewise distribution of exponential and power-law, indicating the heterogeneous character of IM services users' online behavior in different time scales. We infer that the heterogeneous character is related to the communication mechanism of IM and the habits of users. Then we develop a combination model of exponential model and interest model to characterize the heterogeneity. Furthermore, we find that the exponent of the inter-event time distribution of the same service is different in two cities, which is correlated with the popularity of the services. Our research is useful for the application of information diffusion, prediction of economic development of cities, and so on.

In-service inspection of nuclear power plants

International Nuclear Information System (INIS)

Asty, M.; Saglio, R.

1984-10-01

The French Commissariat a l'Energie Atomique (Atomic Energy Commission) developed two new non destructive control techniques, focused ultrasonics and multi-frequency eddy currents, which have been shown to allow a better detection and characterization of defects. We present here some of the in-service inspection devices which have been designed for field application of these techniques on the PWR reactors built by EDF, inspection devices of the PWR steam generator tubing and the now developing specific device for main tank and helicoidal tubing steam generator of Super-Phenix 1 [fr

Styx Grid Services: Lightweight Middleware for Efficient Scientific Workflows

Directory of Open Access Journals (Sweden)

J.D. Blower

2006-01-01

Full Text Available The service-oriented approach to performing distributed scientific research is potentially very powerful but is not yet widely used in many scientific fields. This is partly due to the technical difficulties involved in creating services and workflows and the inefficiency of many workflow systems with regard to handling large datasets. We present the Styx Grid Service, a simple system that wraps command-line programs and allows them to be run over the Internet exactly as if they were local programs. Styx Grid Services are very easy to create and use and can be composed into powerful workflows with simple shell scripts or more sophisticated graphical tools. An important feature of the system is that data can be streamed directly from service to service, significantly increasing the efficiency of workflows that use large data volumes. The status and progress of Styx Grid Services can be monitored asynchronously using a mechanism that places very few demands on firewalls. We show how Styx Grid Services can interoperate with with Web Services and WS-Resources using suitable adapters.

Service Life Of Main Piping Component Due To Low Thermal Stresses.Fatigue

International Nuclear Information System (INIS)

Miroshnik, R.; Jeager, A.; Ben Haim, H.

1998-01-01

The paper deals with estimating the service life of the power station Main piping component and describing the repair process for extending of its service life. After a long period of service, several circular fatigue cracks have been discovered at the bottom of the Main piping component chamber. Finite element analyses of transient thermal stresses, caused by power station startup, are carried out in the paper. The calculation results show good agreement between the theoretical locations of the maximum stresses and the actual locations of the cracks. There is a good agreement between theoretical evaluation and actual service life, as well. The possibility of machining out the cracks in order to prevent their growing is examined here. The machining enables us to extend the power station component's life service

Pre-service inspection and in-service inspection in Japan

International Nuclear Information System (INIS)

Uebayashi, T.; Miyake, Y.

1985-01-01

To ensure the safety of nuclear power plant, pre-service inspection/in-service inspection (PSI/ISI) has an important role, and informations obtained from various inspections during plant shut-down period are contributing to establish effective preventive maintenance activities for plant facilities. It might be said that the high level of availability of Japanese light-water nuclear power plants in these two or three years has been achieved by those efforts. In case of Japan, inspections to be carried out during scheduled plant shut-down period are not limited to code requirements but include many other inspections which are mostly reflected from troubles experienced in both domestic and overseas plants. Usually, those additional inspections are performed by Ministry of Trade and Industries' (MITI's) regulator and/or tentative requirement and considered as ISI in broad meaning. To achieve high availability of plant, it is essential to avoid unscheduled shut-down and to shorten inspection period. The developments of new technology to perform effective ISI for operating plants are continued, but on the other hand it is also very important to pay a great consideration to inspectability of the plants at the stage of plant engineering. With the leadership of MITI, improvement and standardization of light-water nuclear power plant has been proceeded and newly constructed plants have great advantage from the point of view on ISI

Virtualization - A Key Cost Saver in NASA Multi-Mission Ground System Architecture

Science.gov (United States)

Swenson, Paul; Kreisler, Stephen; Sager, Jennifer A.; Smith, Dan

2014-01-01

With science team budgets being slashed, and a lack of adequate facilities for science payload teams to operate their instruments, there is a strong need for innovative new ground systems that are able to provide necessary levels of capability processing power, system availability and redundancy while maintaining a small footprint in terms of physical space, power utilization and cooling.The ground system architecture being presented is based off of heritage from several other projects currently in development or operations at Goddard, but was designed and built specifically to meet the needs of the Science and Planetary Operations Control Center (SPOCC) as a low-cost payload command, control, planning and analysis operations center. However, this SPOCC architecture was designed to be generic enough to be re-used partially or in whole by other labs and missions (since its inception that has already happened in several cases!)The SPOCC architecture leverages a highly available VMware-based virtualization cluster with shared SAS Direct-Attached Storage (DAS) to provide an extremely high-performing, low-power-utilization and small-footprint compute environment that provides Virtual Machine resources shared among the various tenant missions in the SPOCC. The storage is also expandable, allowing future missions to chain up to 7 additional 2U chassis of storage at an extremely competitive cost if they require additional archive or virtual machine storage space.The software architecture provides a fully-redundant GMSEC-based message bus architecture based on the ActiveMQ middleware to track all health and safety status within the SPOCC ground system. All virtual machines utilize the GMSEC system agents to report system host health over the GMSEC bus, and spacecraft payload health is monitored using the Hammers Integrated Test and Operations System (ITOS) Galaxy Telemetry and Command (TC) system, which performs near-real-time limit checking and data processing on the

Power trip : stumbling toward a policy for NB power

International Nuclear Information System (INIS)

Tucker, T.L.; Norris, B.A.

2003-10-01

New Brunswick Power has one of the highest debt burdens of any crown utility along with one of the highest operating costs of any publicly owned electric utility in Canada. NB Power has borrowed heavily to invest in capital projects such as the expansion of its aging Point Lepreau nuclear plant. The current assets will not generate sufficient revenues to recover the investment. Kyoto requirements to reduce emissions have placed additional financial strain on the utility. It must also ensure funds for the eventual decommissioning of its nuclear facility. The utility's high operating costs are due to the high cost of coal used in its thermal generating plants. Since the utility relies on nuclear energy for 40 per cent of its output, it must maintain a high and costly reserve capacity in case the nuclear facility shuts down. In 2002, the government of New Brunswick announced plans to reorganize NB Power by creating a parent holding company with separate business units responsible for power generation, nuclear generation, power transmission, power distribution and customer service. A system operator will supervise access to the transmission system. The author argued that the restructuring will not address the problem of excessive costs and high debt. The NB Electric Finance Corporation will be created to service and retire the province's portion of the utility's debt. Instead of taxes and dividends on its equity position, NB Power will make payments to achieve the debt repayment. The restructured utility will still have to generate sufficient revenues to meet expenses. The following recommendations were presented: the government should privatize NB Power to cap taxpayers' debt liability; the government should assume an appropriate protion of the stranded debt liabilities to attract private investors to purchase the utility; electricity rates should be allowed to rise over time to reflect the real cost of operating the system; and, the government should open both the

Ukrainian 'greens' and nuclear power

International Nuclear Information System (INIS)

Sappa, Nikolai

1993-01-01

At the First Constituent Congress of the Ukrainian Ecology Association 'Zelenyj svit' started in 1989 under antinuclear banners the as an organization of 'greens'. Since a great many of the Ukrainian citizens shared the attitude of the 'greens' to the Chernobyl accident, we faced the problem to stand our ground at least on our 'territory', i,e. the towns-NPP satellites. It is this factor that specified the urgent tasks for our activities at the regional level, carried out in cooperation with public relations services at the NPP. He arranged giving lectures in these towns, sent the public relations services all kind of information which sight be of use for efficient work, and performed sociological studies, which included: i) clearing up the attitude of the public to different aspects of nuclear energy industry, the level of public knowledge concerning the problem involved, ii) finding the channels and most preferable forms of disseminating information on nuclear power, and iii) developing recommendations for NPP administration and public relations services. He started our work three years ago. it may be noted that at the end of the last year there was a conference in Kiev 'The power industry of independent Ukraine and ecology', held by the Union of power engineers and Z elenyj svit . It is rather significant that at this conference, for the first time in the history of the ecological movement in the Ukraine, the 'greens' have admitted the possibility of having a creative dialogue with power engineers on nuclear power problems. Re consider it to be a serious progress in the perception of our opponents may be noted that at the end of the last year there was a conference in Kiev T he power industry of independent Ukraine and ecology , held by the Union of power engineers and Z elenyj svit . It is rather significant that at this conference, for the first time in the history of the ecological movement in the Ukraine, the 'greens' have admitted the possibility of having

Ukrainian 'greens' and nuclear power

Energy Technology Data Exchange (ETDEWEB)

Sappa, Nikolai [Nuclear Public Relations Agency, Ukrainian Science Centre, ' Kharkiv Institute of Physics and Technology' , 310108, Kharkiv (Ukraine)

1993-07-01

At the First Constituent Congress of the Ukrainian Ecology Association 'Zelenyj svit' started in 1989 under antinuclear banners the as an organization of 'greens'. Since a great many of the Ukrainian citizens shared the attitude of the 'greens' to the Chernobyl accident, we faced the problem to stand our ground at least on our 'territory', i,e. the towns-NPP satellites. It is this factor that specified the urgent tasks for our activities at the regional level, carried out in cooperation with public relations services at the NPP. He arranged giving lectures in these towns, sent the public relations services all kind of information which sight be of use for efficient work, and performed sociological studies, which included: i) clearing up the attitude of the public to different aspects of nuclear energy industry, the level of public knowledge concerning the problem involved, ii) finding the channels and most preferable forms of disseminating information on nuclear power, and iii) developing recommendations for NPP administration and public relations services. He started our work three years ago. it may be noted that at the end of the last year there was a conference in Kiev 'The power industry of independent Ukraine and ecology', held by the Union of power engineers and {sup Z}elenyj svit{sup .} It is rather significant that at this conference, for the first time in the history of the ecological movement in the Ukraine, the 'greens' have admitted the possibility of having a creative dialogue with power engineers on nuclear power problems. Re consider it to be a serious progress in the perception of our opponents may be noted that at the end of the last year there was a conference in Kiev {sup T}he power industry of independent Ukraine and ecology{sup ,} held by the Union of power engineers and {sup Z}elenyj svit{sup .} It is rather significant that at this conference, for the first time in the history of the ecological movement in the Ukraine, the 'greens' have

Utility challenges in a competitive power industry

International Nuclear Information System (INIS)

Roberts, J.

2001-01-01

Allete, formerly Minnesota Power, is no longer an electric utility, but a broadly-diversified company operating in 39 states and 8 Canadian provinces. Allete provides retail services in their water and energy business. In addition, they provide wholesale services in their automotive service business, they sell land to developers and have entered into the telecommunications and paper making industry. Diversification has been successful for Allete, and has resulted in a strong balance sheet and cash flow. Graphs depicting the company's business earnings, assets and growth rates were included in this power point presentation. Allete plans to triple its size and continue to maintain its annual growth of 10 per cent or better. tabs., figs

Development on power distribution technologies of four electric power companies in Japan. The Kansai Electric Power Co. , Inc

Energy Technology Data Exchange (ETDEWEB)

1989-07-01

Since dependency upon electric power has been rising yearly with the development of industry and the progress of information-oriented society, various kinds of technical development are needed to supply electricity. Furthermore, amenity of people's living has been highly intended, and life style has varied. Consequently, customers' needs for energy including related services have varied remarkably, and each customer has selected energy more subjectively from the wide range of viewpoint such as reliability, handiness, cleanliness, safety, and economic efficiency. In such situation, the power distribution section of Kansai Electric Power settled four themes for major technical development and has been promoting them. Four themes are as follows; to develop a total automation system for power distribution, to promote 20kV/400V-class power distribution, to develop techniques to form facilities harmonizing with local amenity, and to make business management efficient with the advanced NC system. 3 figs., 4 tabs.

18 CFR 284.285 - Pregrant of abandonment of unbundled sales services.

Science.gov (United States)

2010-04-01

... 18 Conservation of Power and Water Resources 1 2010-04-01 2010-04-01 false Pregrant of abandonment of unbundled sales services. 284.285 Section 284.285 Conservation of Power and Water Resources... Sales by Interstate Pipelines § 284.285 Pregrant of abandonment of unbundled sales services. Abandonment...

Dependency Traits, Relationship Power, and Health Risks in Women Receiving Sexually-Transmitted Infection Clinic Services.

Science.gov (United States)

Benotsch, Eric G; Sawyer, Ashlee N; Martin, Aaron M; Allen, Elizabeth S; Nettles, Christopher D; Richardson, Doug; Rietmeijer, Cornelis A

2017-01-01

In prior research, having traits consistent with a personality disorder has been shown to be related to substance use and high-risk sexual activity; however, few studies have examined relationships between dependency traits and health-jeopardizing behaviors. Individuals with traits consistent with dependent personality disorder may be more likely to be in a primary relationship characterized by unhealthy conditions, including physical abuse from a partner, low assertiveness in sexual situations, and partner infidelity. In addition, dependency traits may be associated with unhealthy coping (e.g., through substance use). To examine associations between dependent personality traits and these types of health-related behaviors, 198 women seeking sexually transmitted infection clinic services completed a computer-assisted assessment of dependent personality traits, substance use, unhealthy conditions in primary relationships, perceived sexual and relationship power, and sexual risk related to condom use. Dependency trait scores were correlated with the use of cocaine, heroin, and methamphetamine. Participants high in dependency traits reported low perceived power within their relationships and less say in sexual behaviors, including condom use. In a series of multivariate analyses, dependency traits significantly predicted having been hit by a partner, staying with a partner after he cheated, having sex because of threats, and fear of asking a partner to use a condom. Dependency traits were also associated with lower past condom use and lower future condom use intentions. Results suggest that dependent personality traits may place women at higher risk for physical abuse and harmful health behaviors.

Electrical Power Budget for FCC-ee

CERN Document Server

Aull, S.; Bozzini, D.; Brunner, O.; Burnet, J.-P.; Butterworth, A.; Calaga, R.; Jensen, E.; Mertens, V.; Milanese, A.; Nonis, M.; Oide, K.; Schwerg, N.; Tavian, L.; Wenninger, J.; Zimmermann, F.; Rinolfi, L; Blondel, A.; Koratzinos, M.; Gorgi Zadeh, S.

2016-01-01

We present a first rough estimate for the electrical power consumption of the FCC-ee lepton collider. This electrical power is dominated by the RF system, which provides the motivation for the ongoing R&D on highly efficient RF power sources. Other contributions come from the warm arc magnets, the cryogenics systems, cooling, ventilation, general services, the particle-physics detectors, and the injector complex.

Managing Sustainable Demand-side Infrastructure for Power System Ancillary Services

Science.gov (United States)

Parkinson, Simon Christopher

Widespread access to renewable electricity is seen as a viable method to mitigate carbon emissions, although problematic are the issues associated with the integration of the generation systems within current power system configurations. Wind power plants are the primary large-scale renewable generation technology applied globally, but display considerable short-term supply variability that is difficult to predict. Power systems are currently not designed to operate under these conditions, and results in the need to increase operating reserve in order to guarantee stability. Often, operating conventional generation as reserve is both technically and economically inefficient, which can overshadow positive benefits associated with renewable energy exploitation. The purpose of this thesis is to introduce and assess an alternative method of enhancing power system operations through the control of electric loads. In particular, this thesis focuses on managing highly-distributed sustainable demand-side infrastructure, in the form of heat pumps, electric vehicles, and electrolyzers, as dispatchable short-term energy balancing resources. The main contribution of the thesis is an optimal control strategy capable of simultaneously balancing grid- and demand-side objectives. The viability of the load control strategy is assessed through model-based simulations that explicitly track end-use functionality of responsive devices within a power systems analysis typically implemented to observe the effects of integrated wind energy systems. Results indicate that there is great potential for the proposed method to displace the need for increased reserve capacity in systems considering a high penetration of wind energy, thereby allowing conventional generation to operate more efficiently and avoid the need for possible capacity expansions.

Global implications of U.S. power deregulation

International Nuclear Information System (INIS)

Maschoff, D.C.

1996-01-01

With U.S. power deregulation remaining a topic that is dominating the entire North American energy marketplace, this paper provides an update of events occurring in U.S. electric power markets, offering some observations about changes due to increasing competition in electric power markets, and discusses some reasons why the events in U.S. electric power markets will soon transform global energy markets. How quickly is the move from local service territory to global markets proceeding? More than fifty U.S. utility companies with revenues of over $1 billion (U.S.) will soon be actively seeking and participating in global business opportunities. Using the same logic that led them to pursue utility initiatives nationally, U.S. utilities will use their core capabilities to compete in global energy services markets. In connection with these global initiatives, U.S. utilities will bring the same fuel-neutral, gas-electric perspective to international electric power and natural gas markets. (Author)

The different services carried out on valves during nuclear power plants refuelling outages. To the Valves Integrated Service; La gestion de las diferentes actividades en valvulas durante las paradas. Hacia el Servicio Integral de Valvulas

Energy Technology Data Exchange (ETDEWEB)

Laporta, J. M.

2007-07-01

The different services carried out on valves during nuclear power plants refuelling outages represent overall one of the activities most interfacing with other refuelling tasks because of the large multidisciplinary teams that participate. Different specialized teams are involved on these activities, mainly on testing, diagnostics and maintenance tasks, performed over the same components, in a sequence of processes closely related with common resources. Under such circumstances, coordination between the different teams intervening and the management of administrative documents and activities in close collaboration with the Control Room is fundamental to ensure that the work is performed in the right sequence avoiding downtimes and optimising the critical path. The integration of these processes and the resources involved allow us to undertake the services globally, forming multidisciplinary teams that optimise resources-fundamentally coordination resources and multi-purpose auxiliary resources-maintaining in all cases the necessary degree of specialisation in keeping with the different tasks making up the Valves Integrated Service. (Author)

Wind energy in the electric power system

DEFF Research Database (Denmark)

Polinder, H.; Peinke, J.; Kramer, O.

2016-01-01

have to behave when connected to the power system. In this way, they already incorporate basic ancillary services. However, frequency control is normally not provided as a regular reserve, because this would require reserving parts of the available wind capacity as stand-by capacity. Within R...... in order to guarantee a reliable stable power supply at any instant in time. Substituting these plants with renewable generation units requires the latter to be capable of providing these ancillary services. The state of the art is that grid codes are used to define the way wind turbines and wind farms......&D institutes, such control options were demonstrated and assessed for wind power plant clusters....

Filter paper collection of Plasmodium falciparum mRNA for detecting low-density gametocytes.

Science.gov (United States)

Jones, Sophie; Sutherland, Colin J; Hermsen, Cornelus; Arens, Theo; Teelen, Karina; Hallett, Rachel; Corran, Patrick; van der Vegte-Bolmer, Marga; Sauerwein, Robert; Drakeley, Chris J; Bousema, Teun

2012-08-08

Accurate sampling of sub-microscopic gametocytes is necessary for epidemiological studies to identify the infectious reservoir of Plasmodium falciparum. Detection of gametocyte mRNA achieves sensitive detection, but requires careful handling of samples. Filter papers can be used for collecting RNA samples, but rigorous testing of their capacity to withstand adverse storage conditions has not been fully explored. Three gametocyte dilutions: 10/μL, 1.0/μL and 0.1/μL were spotted onto Whatman™ 903 Protein Saver Cards, FTA Classic Cards and 3MM filter papers that were stored under frozen, cold chain or tropical conditions for up to 13 weeks . RNA was extracted, then detected by quantitative nucleic acid sequence-based amplification (QT-NASBA) and reverse-transcriptase PCR (RT-PCR). Successful gametocyte detection was more frequently observed from the Whatman 903 Protein Saver Card compared to the Whatman FTA Classic Card, by both techniques (pFTA Classic Card but not the 903 Protein Saver Card or Whatman 3MM filter paper. The sensitivity of gametocyte detection was decreased when papers were stored at high humidity. This study indicates the Whatman 903 Protein Saver Card is better for Pfs25 mRNA sampling compared to the Whatman FTA Classic Card, and that the Whatman 3MM filter paper may prove to be a satisfactory cheaper option for Pfs25 mRNA sampling. When appropriately dried, filter papers provide a useful approach to Pfs25 mRNA sampling, especially in settings where storage in RNA-protecting buffer is not possible.

Optimal Operation of Plug-In Electric Vehicles in Power Systems with High Wind Power Penetrations

DEFF Research Database (Denmark)

Hu, Weihao; Su, Chi; Chen, Zhe

2013-01-01

in the power systems with high wind power penetrations. In this paper, the integration of plug-in electric vehicles in the power systems with high wind power penetrations is proposed and discussed. Optimal operation strategies of PEV in the spot market are proposed in order to decrease the energy cost for PEV......The Danish power system has a large penetration of wind power. The wind fluctuation causes a high variation in the power generation, which must be balanced by other sources. The battery storage based Plug-In Electric Vehicles (PEV) may be a possible solution to balance the wind power variations...... owners. Furthermore, the application of battery storage based aggregated PEV is analyzed as a regulation services provider in the power system with high wind power penetrations. The western Danish power system where the total share of annual wind power production is more than 27% of the electrical energy...

Advantages and risks in service standardization

Directory of Open Access Journals (Sweden)

Veres Zoltán

2004-01-01

Full Text Available Comparing the advantages and risks in standardizing services, there can be no clear-cut answer concerning the strategy to be followed. Exploiting advantages in the long run is only worth it for a provider of a service that is able to build up a powerful brand image. However, the more successful a service concept, the stronger the temptation to imitation. The success of imitators will sooner or later bring about multibrand loyalty.

Qualification of NDT systems for in-service inspections of nuclear power plant pressure vessels; Ydinvoimalaitosten paineastioiden maeaeraeaikaistarkastuksissa kaeytettaevien NDT-jaerjestelmien paetevoeinti

Energy Technology Data Exchange (ETDEWEB)

Elfving, K

1998-11-01

The goal of this study is to determine the requirements of the in-service inspection qualification in Europe, their feasibility in practice and to find out possible manufacture defects in test pieces used in practical trials. The literature study consists of qualification requirements set by European regulatory bodies and by the European nuclear power utilities. Also a brief summary of qualification requirements set by ASME Code, Section XI and comparison between ASME and European qualification requirements is included 24 refs.

Optimal Regulation of Virtual Power Plants

Energy Technology Data Exchange (ETDEWEB)

Dall Anese, Emiliano; Guggilam, Swaroop S.; Simonetto, Andrea; Chen, Yu Christine; Dhople, Sairaj V.

2018-03-01

This paper develops a real-time algorithmic framework for aggregations of distributed energy resources (DERs) in distribution networks to provide regulation services in response to transmission-level requests. Leveraging online primal-dual-type methods for time-varying optimization problems and suitable linearizations of the nonlinear AC power-flow equations, we believe this work establishes the system-theoretic foundation to realize the vision of distribution-level virtual power plants. The optimization framework controls the output powers of dispatchable DERs such that, in aggregate, they respond to automatic-generation-control and/or regulation-services commands. This is achieved while concurrently regulating voltages within the feeder and maximizing customers' and utility's performance objectives. Convergence and tracking capabilities are analytically established under suitable modeling assumptions. Simulations are provided to validate the proposed approach.

The role of NDT in nuclear power development in Pakistan

International Nuclear Information System (INIS)

Asghar Ali Khan; Sabir Choudhary, M.; Arif Iftikhar, M.; Afaque, A. S.; Yousaf Raza Zaidi, S.

2003-01-01

Pakistan has two operating nuclear power plants namely, Karachi Nuclear Power Plant (KANUPP) which is 137 MW Candu type Canadian reactor using natural uranium fuel and the Chashma Nuclear Power Plant (CHASNUPP) which is a 300 MW PWR type Chinese built reactor using 3% enriched uranium fuel. A third nuclear power plant is being negotiated for construction. This would most probably be the twin unit of CHASNUPP and the construction might begin early next year.Non destructive testing (NDT) has an important role in the development and safe operation of the nuclear power plants by providing the Pre-Service Inspection (PSI) services during the manufacturing and installation phase, and the In-Service Inspection (ISI) services during the operation and maintenance phase. ISI of various components of nuclear power plants is an essential activity which has to be carried out either on emergency basis on as and when required basis or periodically at regular intervals described in the quality assurance QA manuals of the plant. There are numerous components and systems in the nuclear power plants working together. The failure of one system affects the performance of the whole plant. There are two main divisions, called the Nuclear Island and Conventional Island. Main components of Nuclear Island are reactor pressure vessel, reactor core, steam generators, pressurizer, primary coolant pumps and primary piping, etc. and the main components in Conventional Island are turbine, condensers, pre-heaters, moisture separators, secondary heat treatment system and piping etc. (Author)

Integration of in-service inspection works in the objectives of nuclear power plants; Integracion de los trabajos de inspeccion en servicio en los objectivos de las centrales nucleares

Energy Technology Data Exchange (ETDEWEB)

Garcia, M.; Lopez, M.A.

1996-09-01

The present articles summarizes the objectives of Spanish NPPs and the in-service inspection aspect in these objectives. The Safety maintenance, lifetime of nuclear power plants, reduction of doses and wastes and the participation of main are evaluated.

Aging of control and service air compressors and dryers used in nuclear power plants

International Nuclear Information System (INIS)

Moyers, J.C.

1990-07-01

This report was produced under the Detection of Defects and Degradation Monitoring of Nuclear Plant Safety Equipment element of the Nuclear Plant Aging Research Program. This element includes the identification of practical and cost-effective methods for detecting, monitoring, and assessing the severity of time-dependent degradation (aging) of control and service air compressors and dryers in nuclear power plants. These methods are to provide capabilities for establishing degradation trends prior to failure and developing guidance for effective maintenance. The topics of this Phase 1 assessment report are failure modes and causes resulting from aging, manufacturer--recommended maintenance and surveillance practices, and measurable parameters (including functional indicators) for use in assessing operational readiness, establishing degradation trends, and detecting incipient failure. the results presented are based on information derived from operating experience records, manufacturer-supplied information, and input from plant operators. For each failure mode, failure causes are listed by subcomponent, and parameters potentially useful for detecting degradation that could lead to failure are identified. 13 refs., 9 figs., 16 tabs

Environmental aspects of nuclear power

International Nuclear Information System (INIS)

Ward, D.P.

1987-01-01

Nuclear power provides the world with an important option for generating electricity. To successfully and safely utilize this power, engineering and environmental factors should be carefully considered throughout a nuclear power plant project, especially during the planning stages. This paper discusses the major environmental aspects of a nuclear power plant project from site selection to retirement. During the site selection process, both engineering and environmental resources must be identified and evaluated. Environmental resources include areas that support agricultural or aquatic commercial activities, habitats for commercial or endangered species, population centers, transportation systems, and recreational areas. Also, during the site selection process, the potential impacts of both construction and operating activities must be considered. In addition to the area actually disturbed by construction, construction activities also affect local services, such as transportation systems, housing, school systems, and other social services. Since nuclear power plants use a 'clean fuel,' generally the most significant operating activity having a potential environmental impact is the discharge of cooling water. The potential effect of this discharge on commercial activities and sensitive habitats should be thoroughly evaluated. Lastly, the method of decommissioning can affect long-range land use planning and should therefore be considered during the planning process. With appropriate planning, nuclear power plants can be constructed and operated with minimum environmental impact. (author)

Reactive power management and voltage control in deregulated power markets

Science.gov (United States)

Spangler, Robert G.

The research that is the subject of this dissertation is about the management of reactive power and voltage support in the wholesale open access power markets in the United States (US). The purpose of this research is to place decisions about open access market structures, as they relate to reactive power and voltage control, on a logical and consistent economic basis, given the engineering needs of a commercial electric power system. An examination of the electricity markets operating in the US today reveals that current approaches to reactive power management and voltage support are extensions of those based on historical, regulated monopoly electric service. A case for change is built by first looking at the subject of reactive power from an engineering viewpoint and then from an economic perspective. Ultimately, a set of market rules for managing reactive power and voltage support is proposed. The proposal suggests that cost recovery for static and dynamic VARs is appropriately accomplished through the regulated transmission cost of service. Static VAR cost recovery should follow traditional rate recovery methodologies. In the case of dynamic VARs, this work provides a methodology based on the microeconomic theory of the firm for determining such cost. It further suggests that an operational strategy that reduces and limits the use of dynamic VARs, during normal operations, is appropriate. This latter point leads to an increase in the fixed cost of the transmission network but prevents price spikes and short supply situations from affecting, or being affected by, the reactive capability limitations associated with dynamic VARs supplied from synchronous generators. The rules are consistent with a market structure that includes competitive generation and their application will result in the communication of a clear understanding of the responsibilities, related to voltage control, of each type of market entity. In this sense, their application will contribute to

Reduced risks and improved economic operation of ancillary services

NARCIS (Netherlands)

Bosch, van den P.P.J.; Jokic, A.; Hermans, R.M.; Frunt, J.; Kling, W.L.; Nobel, Frank; Boonekamp, P.; Boer, de W.W.

2010-01-01

Present arrangements and regulation for ancillary services for power balance in power systems cannot cope with future developments in power systems as the participants do not receive proper incentives for required behaviour. This paper analyzes the consequences of current arrangements for system

Impact abroad of the accident at the Three Mile Island nuclear power plant: March-September 1979. Prepared for the Subcommittee on Energy, Nuclear Proliferation and Federal Services of the Committee on Governmental Affairs, United States Senate by the Congressional Research Service, Library of Congress

International Nuclear Information System (INIS)

Anon.

1980-01-01

On March 28, 1979, an accident occurred in a nuclear power plant at Three Mile Island, near Harrisburg, Pennsylvania. It caused widespread fears of catastrophe and raised doubts as to the adequacy of what some nuclear utilities and the U.S. Nuclear Regulatory Commission have done to assure safe operation of nuclear power plants. Now, some ten months after the accident, its effects on Federal regulation and upon the public's attitude toward nuclear power are still evolving. The final effects remain hidden in the future. They can be expected to have an impact on the development of nuclear power in the United States and also abroad. The accident at Three Mile island has been investigated and analyzed exhaustively by the NRC, by the nuclear industry, by a Presidential commission (the Kemeny Commission), and by two committees of Congress. Some of these studies are still in progress. Many foreign governments sent teams to analyze and report on the accident and reactions to it. Because the future of nuclear power abroad seems likely to bear imprint of the accident, and because of the inescapable interconnection between nuclear power in the United States and in other countries, Senator John Glenn's Subcommittee on Energy, Nu-Proliferation and Federal Services of the Senate Committee on Government Affairs, asked the Congressional Research Service (CRS) to arrange for reviews of the impacts abroad. The CRS contracted for this review with two well-situated analysts. One is Geoffrey Greenhalgh, an Englishman who has had a long association with the nuclear power industry in Europe and is a support of it. The other is Walter C. Patterson, who is one of the leading articulate critics of nuclear power and has long been associated with Friends of the Earth, in London

Power reserve provision with wind farms. Grid integration of wind power

Energy Technology Data Exchange (ETDEWEB)

Gesino, Alejandro J.

2011-07-01

Wind power is, admittedly, different from other power technologies and integrating large amounts of it in the existing power systems is a challenge that requires innovative approaches to keep the sustainability of the power system operation. In the coming years its contribution to the system security will become mandatory as far as the trend goes towards more decentralized structures and an increase in complexity due to a higher number of market participants. This PhD addresses one of the fundamental ancillary services researching about a secure and flexible methodology for power reserve provision with wind farms. Based on the current needs and security standards of those highly developed European grid codes, a new model for power reserve provision with wind power is developed. This methodology, algorithms and variables are tested based on real scenarios from five German wind farm clusters. Finally, once the methodology for power reserve provision with wind power has been tested, real control capabilities from already installed wind farms in Germany and Portugal are analyzed. Their capabilities of following control commands as well as an error deviation analysis are also presented. (orig.)

The power of management in medical services. Can we manage better for higher quality and more productive medical services?

Directory of Open Access Journals (Sweden)

Magdalena BARBU

2010-06-01

Full Text Available Medical services are the most important services of all since we all depend on them. Their quality and productivity can assure a wealthy nation and therefore good economical results. The offer of medical services depends on medical personnel and more than this, on the management in the medical field since any resource not managed well or not managed at all is only a lost one, regardless its value. Management is therefore the key, the “how to” method of obtaining the desired result. The same approach can be applied into our study in order to reach more productive medical services which to prove high quality to all patients. We need to use and to squeeze the entire force of management tools in order to reach our goal: accessible medical services full of quality. The current worldwide crisis situation makes us think that after job and food, even medical services (also a basic thing after all can become a “luxury” although this should never happen. Therefore we must do whatever needed to improve the way medical organizations are driven so that the quality of their medical services will be better and better and the productivity will be at a higher level. Medical management should have as a goal making it possible for patients to be able to solve their health problems as soon as possible and as good as possible.

Demonstration of Active Power Controls by Utility-Scale PV Power Plant in an Island Grid: Preprint

Energy Technology Data Exchange (ETDEWEB)

Gevorgian, Vahan; O' Neill, Barbara

2017-02-01

The National Renewable Energy Laboratory (NREL), AES, and the Puerto Rico Electric Power Authority conducted a demonstration project on a utility-scale photovoltaic (PV) plant to test the viability of providing important ancillary services from this facility. As solar generation increases globally, there is a need for innovation and increased operational flexibility. A typical PV power plant consists of multiple power electronic inverters and can contribute to grid stability and reliability through sophisticated 'grid-friendly' controls. In this way, it may mitigate the impact of its variability on the grid and contribute to important system requirements more like traditional generators. In 2015, testing was completed on a 20-MW AES plant in Puerto Rico, and a large amount of test data was produced and analyzed that demonstrates the ability of PV power plants to provide various types of new grid-friendly controls. This data showed how active power controls can leverage PV's value from being simply an intermittent energy resource to providing additional ancillary services for an isolated island grid. Specifically, the tests conducted included PV plant participation in automatic generation control, provision of droop response, and fast frequency response.

Quality of service in the Netherlands

Energy Technology Data Exchange (ETDEWEB)

Knijp, J.; Zwart, T. de; Frenken, R.M.L. [KEMA (Netherlands)

1997-12-31

Growing competition between utilities, changing legislation and increased usage of sensitive and disturbing end-user equipment, are some reasons for growing attention for the customers` view towards the product electricity and its related services. This growing interest certainly does not mean that the technical quality level always has to be increased. This depends mainly on the requirements and expectations of the customers. Achieving a reliable power supply at high quality level requires enormous investments. For electric utilities, it is important to know how the customers value the delivered products and services in order to determine if the investments are proportionally. Utilities need new tools and techniques to search for an optimal quality level for each customer. Product differentiation and additional services can be developed if the right information is available. In 1994 KEMA has started a project called: Quality of service. During the project different methods and techniques have been developed. In this paper three tools will be presented. The ``customer simulator``, the Dutch power quality monitoring programme and the ``PSQ-indicator``. (Author)

Environmental aspects of nuclear power

International Nuclear Information System (INIS)

Ward, D.P.

1988-01-01

Nuclear power provides the world with an important option for generating electricity. To successfully and safely utilize this power, engineering and environmental factors should be carefully considered throughout a nuclear power plant project, especially during the planning stages. This paper discusses the major environmental aspects of a nuclear power plant project from site selection to retirement. During the site selection process, both engineering and environmental resources must be identified and evaluated. Environmental resources include areas that support agricultural or aquatic commercial activities, habitats for commercial or endangered species, population centers, transportation systems, and recreational areas. Also during the site selection process, the potential impacts of both construction and operating activities must be considered. In addition to the area actually disturbed by construction, construction activities also affect local services, such as transportation systems, housing, school systems, and other social services. Since nuclear power plants use a ''clean fuel,'' generally the most significant operating activity having a potential environmental impact is the discharge of cooling water. The potential effect of this discharge on commercial activities and sensitive habitats should be thoroughly evaluated. Lastly, the method of decommissioning can affect long-range land use planning and should therefore be considered during the planning process

Report of the electric Equipment Service - Annex E

International Nuclear Information System (INIS)

Sanovic, V.

1990-01-01

This report describes organisational structure of the Service dealing with control and maintenance of electrical supply system and equipment. It includes detailed data about electric power consumption, power cuts and failures during the past period [sr

Report of the electric Equipment Service - Annex E

International Nuclear Information System (INIS)

Sanovic, V.

1987-01-01

This report describes organisational structure of the Service dealing with control and maintenance of electrical supply system and equipment. It includes detailed data about electric power consumption, power cuts and failures during the past period [sr

Report of the electric Equipment Service - Annex E

International Nuclear Information System (INIS)

Sanovic, V.

1988-01-01

This report describes organisational structure of the Service dealing with control and maintenance of electrical supply system and equipment. It includes detailed data about electric power consumption, power cuts and failures during the past period [sr

Report of the electric Equipment Service - Annex E