Sample records for cfff

  1. Safety analysis of the UTSI-CFFF superconducting magnet

    International Nuclear Information System (INIS)

    In designing a large superconducting magnet such as the UTSI-CFFF dipole, great attention must be devoted to the safety of the magnet and personnel. The conductor for the UTSI-CFFF magnet incorporates much copper stabilizer, which both insures its cryostability, and contributes to the magnet safety. The quench analysis and the cryostat fault condition analysis are presented. Two analyses of exposed turns follow; the first shows that gas cooling protects uncovered turns; the second, that the cryostat pressure relief system protects them. Finally the failure mode and safety analysis is presented

  2. Environmental Audit of the Coal-Fired Flow Facility (CFFF)

    International Nuclear Information System (INIS)

    The scope of the audit at the CFFF was comprehensive, addressing environmental activities in the technical areas of air; soils, sediments, and biota; surface water/drinking water; groundwater; waste management; toxic and chemical materials; quality assurance; radiation; inactive waste sites; environmental management; and environmental monitoring programs. Specifically assessed was the compliance of CFFF operations and activities with Federal, state, and local regulations; DOE Orders; internal operating standards; and best management practices. Onsite activities included inspection of CFFF facilities and operations; review of site documents; interviews with DOE and contractor personnel, as well as representatives from state regulatory agencies; and reviews of previous appraisals. Using these sources of information, the environmental audit team developed findings, which fell into two general categories: compliance findings and best management practice findings. Each finding also identifies apparent causal factor(s) that contributedto the finding and will assist line management in developing ''root causes'' for implementing corrective actions. The overall conclusion of the audit is that The University of Space Institute's Energy Conversion Research and Development Programs (ECP) management of the CFFF has not kept pace with DOE's increasing expectation for environmental performance. ECP has not applied the same door and formality to environmental compliance and protection activities as they apply to their research and development activities.A total of 31 findings were identified in this audit

  3. UTSI/CFFF MHD Program Completion and Related Activity

    Energy Technology Data Exchange (ETDEWEB)



    Routine preventive maintenance of the DOE Coal Fired Flow Facility (CFFF) is being performed. Modernization programs, being funded under subcontract from Foster Wheeler Development by the DOE HIPPS Program, are being implemented on the coal processing system, the data acquisition and control system and control room. Environmental restoration actions continued with monitoring of groundwater wells and holding pond effluent. Actions are under way to dispose of spent seed/ash mixtures and excess coal remaining from the MHD POC program.

  4. UTSI/CFFF MHD program completion and related activities

    Energy Technology Data Exchange (ETDEWEB)

    Muehlhauser, J.W.; Chapman, J.N.


    Maintenance work on the DOE CFFF facility remained in suspension for the entire quarter in accordance with the stop work order issued the previous quarter. Work resumed on the environmental restoration activities during the quarter and work performed is summarized. Progress continued on the five (5) high temperature superconductivity projects under Task 6. On the sol-gel process, improvement is reported in application of buffer layers to single crystals. Problems are discussed in applying buffer layers to nickel substrates. The status of cost performance studies is summarized. The status of diagnostic measurements directed toward real time control of manufacturing processes is reported with emphasis on measurement of surface smoothness. The results of atomic absorption measurement of MOCVD precursors are reported.


    Energy Technology Data Exchange (ETDEWEB)



    Maintenance of the DOE CFFF facility was suspended, due to a stop work order issued in September 1998. Property accounting actions were continued on a minimum basis with university funding. No work was done on the environmental management and environmental restoration for the facility. Continued progress is reported on the five (5) high temperature superconductivity projects under Task 6. A cooperative group has been formed to facilitate the development of chemical processes for the manufacture of HTS superconductor wire. The group includes EURUS Technologies, Incorporated, Sandia National Laboratory, Clemson University, University of Houston and the National Magnet Laboratory. The ac loss project continues laboratory work in an effort to determine the optimum configuration for multiple conductor cables to minimize the ac loss. The cost/performance analysis concentrated on addressing comments on the draft Topical Report on the life cycle cost analysis of coated conductor manufacture by electron beam and PLD. Work on diagnostics for real time process control reported includes surface smoothness measurement by scatterometry, Raman scattering for real time determination of crystalline structure and oxygen content and atomic absorption measurements for control of stoichiometry in MOCVD deposition of YBCO.


    Energy Technology Data Exchange (ETDEWEB)

    Joel W. Muehlhauser


    In this final technical report, UTSI summarizes work completed under DOE Contract No. DE-AC22-95PC95231. This work began on the contract effective date, September 15, 1995 and is continuing on a very small basis to complete the groundwater remediation as of this date. The work scope required UTSI to continue to maintain the DOE Coal Fired Flow Facility and keep it in readiness for anticipated testing. This effort was terminated in September 1998 by DOE stop-work letter. Work continued on reporting, environmental restoration and on the High Temperature Superconductivity work that was underway. The work included preparing reports on the MHD POC tests that had been completed just prior to this contract initiation under an earlier contract with DOE Chicago. These four reports are summarized herein. This report summarizes the environmental restoration work performed under the contract, including groundwater monitoring and remediation, removal of wastes from the facility, removal of asbestos from the cooling tower and actions in compliance with the license to discharge water into Woods Reservoir. This report covers work in support of the DOE High Temperature Superconductivity program including: (1) Assistance to DOE in preparing a development plan; (2) Cooperation with industry, national laboratories and other universities to promote the commercialization of thin film superconductors (coated conductors); (3) Process Evaluations; (4) Process Diagnostic Development; and (5) Process Economics. The assistance to DOE task included convening an advisory board composed of all the major participants in the DOE program and preparing a draft development plan and Research and Development Roadmap leading to commercialization of the coated conductor technology. Under this program, cooperative agreements and cooperative work was undertaken with Oak Ridge National Laboratory, Midwest Superconductivity, Inc., EURUS Technologies, Inc., Westinghouse Electric Company, and others. In the process evaluation task, four studies were completed by faculty, staff and students. Summaries of these studies are included in this report. In process diagnostic development, three studies were completed, all emphasizing diagnostics that are applicable to real time control of manufacturing processes. In Process Economics, one study was completed that estimated the manufacturing cost of superconducting wire produced by two of the process thought to be most promising.

  7. Dicty_cDB: FC-IC0701 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available SSSYRVSLSYSNISINIFYSSYFC*cfff*sivm*i*afksl qyiyyllfltly*fvsfytcdistsxixx*ar*kftpkxxsxilxlsxshxlxxfxqllf psxl...yllfltly*fvsfytcdistsxixx*ar*kftpkxxsxilxlsxshxlxxfxqllf psxltfpfm*fnxfxdt*yss Frame B: ltfrcrftvfallfvrpltg...khflfvlfllmllllihsyvnisl*ifa vyllfafphfvlicfllylrhfhfxyxxlskmkihskxxlxnsxiixfsxxxxixpitxp ixshfsiyvi*fxx*yxi

  8. Non-coincident multi-wavelength emission absorption spectroscopy

    Energy Technology Data Exchange (ETDEWEB)

    Baumann, L.E.


    An analysis is presented of the effect of noncoincident sampling on the measurement of atomic number density and temperature by multiwavelength emission absorption. The assumption is made that the two signals, emission and transmitted lamp, are time resolved but not coincident. The analysis demonstrates the validity of averages of such measurements despite fluctuations in temperature and optical depth. At potassium-seeded MHD conditions, the fluctuations introduce additional uncertainty into measurements of potassium atom number density and temperature but do not significantly bias the average results. Experimental measurements in the CFFF aerodynamic duct with coincident and noncoincident sampling support the analysis.

  9. MHD Technology Transfer, Integration and Review Committee. Seventh semi-annual status report, April 1991--September 1991

    Energy Technology Data Exchange (ETDEWEB)


    This seventh semi-annual status report of the MHD Technology Transfer, Integration and Review Committee (TTIRC) summarizes activities of the TTIRC during the period April 1991 through September 1991. It includes a summary and minutes of the General Committee meeting, progress summaries of ongoing POC contracts, discussions pertaining to technical integration issues in the POC program, and planned activities for the next six months. The meeting included test plan with Western coal, seed regeneration economics, power management for the integrated topping cycle and status of the Clean Coal Technology Proposal activities. Appendices cover CDIF operations HRSR development, CFFF operations etc.

  10. Parameters affecting nitrogen oxides in a Coal-Fired Flow Facility system

    Energy Technology Data Exchange (ETDEWEB)

    Lu, Xiaoliang


    The unusually high temperature in the primary combustor of the Coal-Fired Magnetohydrodynamics (MHD) power generation system causes much higher nitrogen oxides (NO{sub x}) to be produced than in a conventional coal fired generation system. In order to lower the NO{sub x} concentration to an acceptable level, it is important to know how parameters of the MM power generation system affect the NO{sub x} concentration. This thesis investigates those effects in the Coal-Fired Flow Facility (CFFF) at the University of Tennessee Space Institute under the contract of US Department Of Energy (DOE). With thermodynamic and kinetic computer codes, the theoretical studies were carried out on the parameters of the CFFF system. The results gathered from the computer codes were analyzed and compared with the experimental data collected during the LMF5J test. The thermodynamic and kinetic codes together modeled the NO.{sub x} behavior with reasonable accuracy while some inconsistencies happened at the secondary combustor inlet.

  11. Theoretical analysis of fundamental natural frequency with different boundary conditions of isotropic hyper composite plate

    Directory of Open Access Journals (Sweden)

    Abdulkareem Abdulrazzaq Alhumdany, Muhannad Al-Waily, Mohammed Hussein Kadhim


    Full Text Available This research presented isotropic hyper composite plates structures, which are made of (resin and fiber with powder as a reinforcement material. The basic item of this research is to improve the dynamical properties of the composite structure. This item has been verified by adding the powder as a reinforcement material. Square and rectangular hyper composite plates (AR=1 and 1.5 are made with different volume fractions for glass powder, resin and short fiber. Different boundary conditions are used (SSSS, CCSS, CCCC, CFFF, SSFF and CCFF to support these plates. The dynamical properties of hyper composite models are calculated numerically with considering these different parameters. The results showed that the natural frequency increases by increasing the volume fraction of powder or short fiber with decreasing the resin. It can be concluded that the fundamental natural frequency in aspect ratio (AR=1 increased successively with the boundary conditions (CFFF, SSFF, SSSS, CCFF, CCSS, and CCCC in ascending order, because the increasing in stiffness of the composite plate depends on the supporting conditions. And, for aspect ratio (AR=1.5, the fundamental natural frequency is increased successively with the boundary conditions (CCFF, CFFF, SSFF, SSSS, CCSS, and CCCC in ascending order. Also the results showed that the fundamental natural frequency of aspect ratio 1 is larger than 1.5, because the ratio between stiffness to weight for AR=1 is larger than AR=1.5. A comparison made between present numerical results and results presented by former published paper Abdulkareem [8]and theoretical results by Muhannad Al-Waily [9] for simply supported plate with aspect ratio (AR=1, a=b=25 cm and h=5 mm and different volume fractions of resin, powder and short fiber and good agreement were the maximum error between numerical and experimental is results is about 5.73% (with 20% short reinforcement fiber, 30% powder reinforcement and 50% resin

  12. Summary of the Proceedings of the Super-Conductivity Technical Exchange Meeting (United States)


    Contents: Large Superconductive Magnets; Superconductivity Activities at LASL; Superconductivity Studies at Argonne National Laboratory; CFFF MHD Magnet at Argonne National Laboratory; MHD Superconducting Magnets; Fermilab's Energy Saver; LCP and 12 Tesla Programs at ORNL; Division of Electric Energy System's Superconductivity Program; Development of Standards for Practical Superconductors; Casting of Dendritic Cu-Nb Alloys for Superconducting Wire; Review of Recent Developments of Multifilamentary Nb3Sn by 'in Situ' and Cold Powder Metallurgy Processes; Superconducting Magnet Facility at NRL; Airborne Superconductor Applications; High Pressure Synthesis Program at Benet Weapons Laboratory Watervliet Arsenal; CuCl; Stability and Exciton Population Percursive to Anomalous Diagmagnetism; Navy Superconductive Machinery Development Program; and Superconducting Materials Program at NRL.

  13. Respuesta orgánica en una simulación de combate Organic response to a combat simulation

    Directory of Open Access Journals (Sweden)

    V.J. Clemente Suárez


    Full Text Available Antecedentes y objetivos: El análisis de la respuesta orgánica durante el combate es un campo de estudio poco tratado en la bibliografía específica, por ello se planteo como objetivo de este trabajo el analizar el efecto de una simulación de combate en el organismo de los combatientes. Material y Métodos: Se analizó el umbral de frecuencia crítica de fusión (UFCF como medio de detectar fatiga del sistema nervioso central (SNC, fuerza explosiva de piernas, fuerza isométrica, lactato sanguíneo y percepción subjetiva de esfuerzo en 20 combatientes antes y después de realizar una simulación de combate. Resultados: Después de la simulación los sujetos mostraron un aumento significativo (pBackground and Objectives: Analysis of organic response in combat is a bit field of study specifically studied in specific literature, for this reason the objective of this work is to analyze the effect of a combat simulation in the organism of soldiers. Material and Methods: We analyzed the critical flicker fusion frequency (CFFF as a means of detecting fatigue of central nervous system (CNS, leg explosive strength, isometric strength, blood lactate and rating of perceived exertion in 20 soldiers before and after performing a combat simulation. Results: After combat simulation, soldiers showed a significant increase (p<0,05 in lactate levels (2,57±0,62 mmol/l vs. 4,92±2,18 mmol/l and isometric strength and a decrease in legs explosive strength. CFFF values decreased, showing signs of fatigue of CNS. Conclusions: Combat simulation was highly stressful, showing signs of fatigue of the CNS, are carried out in anaerobic conditions, despite the low speed o execution, and the subjective perception of effort does not correspond to the organic response obtained. These data could use to adapting current training systems for current missions in combat zones.

  14. Central additive effect of Ginkgo biloba and rhodiola rosea on psychomotor vigilance task and short-term working memory accuracy

    Directory of Open Access Journals (Sweden)

    hayder M. al-kuraishy


    Full Text Available Abstract Aim: The present study investigates the effect of combined treatment with Ginkgo biloba and/or rhodiola rosea on psychomotor vigilance task and short-term working memory accuracy. Subjects and Methods: A total number of 112 volunteers was enrolled to study the effect of Ginkgo biloba and rhodiola rosea on psychomotor vigilance task and short-term working memory accuracy as compared to placebo effects,the central cognitive effect was assessed by Critical flicker-fusion frequency (CFFF, Psychomotor vigilance Task (PVT and computerized N-back test. Results: Placebo produced no significant effects on all neurocognitive tests measure p>0.05 in normal healthy volunteers, Ginkgo biloba or Rhodiola rosea improve psychomotor vigilance task and low to moderate working memory accuracy, The combined effect of Rhodiola rosea and Ginkgo biloba leading to more significant effect on psychomotor vigilance task, all levels of short term working memory accuracy and critical fusion versus flicker p<0.01, more than of Ginkgo biloba or Rhodiola rosea when they used alone. Conclusion: The combined effect of Rhodiola rosea and Ginkgo biloba leading to more significant effect on cognitive function than either Ginkgo biloba or Rhodiola rosea when they used alone. [J Intercult Ethnopharmacol 2016; 5(1.000: 7-13

  15. Experimental investigation for powder reinforcement effect on mechanical properties and natural frequency of isotropic hyper composite plate with various boundary conditions

    Directory of Open Access Journals (Sweden)

    Abdulkareem Abdulrazzaq Alhumdany, Muhannad Al-Waily, Mohammed Hussein Kadhim


    Full Text Available In this research eleven samples of composite plate materials was made with different volume fraction of the components to produce an isotropic hyper composite materials composed of three materials, epoxy resin and two reinforcements: short glass fiber and glass powder. The composite structure was studied to estimate the mechanical properties (modulus of elasticity E, modulus of rigidity G, and Poisson’s ratio and the natural frequency experimentally. The experimental procedure includes the tensile test machine with the load capacity (0-540KN and vibration test machine. The effect of volume fraction for different aspect ratios of plate were studied with six boundary conditions (Simply supported along all edges (SSSS, Simply-Free Support Edges (SSFF, Clamped-Free Support Three Edges (CFFF, Simply-Clamped Supported Edges (SSCC, Clamped-Free Supported Edges (CCFF, and Clamped Support along all edges (CCCC. The results showed that the modulus of elasticity of hyper composite of short glass fiber and glass powder reinforcement and epoxy resin material was increased with the increase of short fiber volume fraction. But the yield stress was decreased with the increase of powder volume fraction of hyper composite material. The natural frequency of isotropic hyper composite materials plate was increased with the increase of short fiber volume fraction were the volume fraction of short fiber (40% at samples 4 and 8, maximum natural frequency had occur. It was observed that the natural frequency for aspect ratio (AR=1 was higher than that for aspect ratio (AR=1.5. The Experimental mechanical properties and natural frequency of composite plate with various volume fraction results are compare with results of other researcher and the comparison shown the good agreement between presented results and results of research, Muhannad Al-Waily [7], where, the maximum error of mechanical properties compared about (8.77% and maximum error for natural frequency