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Risk Informed Performance Based Regulatory Implications Of Improved Emergency Diesel Generator Reliability
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Book Synopsis Risk-informed, Performance-based Regulatory Implications of Improved Emergency Diesel Generator Reliability by : Shantel Mistilynn Utton
Download or read book Risk-informed, Performance-based Regulatory Implications of Improved Emergency Diesel Generator Reliability written by Shantel Mistilynn Utton and published by . This book was released on 1998 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis On Monitoring Nuclear Power Plant Emergency Diesel Generator Reliability by :
Download or read book On Monitoring Nuclear Power Plant Emergency Diesel Generator Reliability written by and published by . This book was released on 1993 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: If offsite power is interrupted, the availability of onsite alternating current power supplies is a major factor in assuring acceptable safety at commercial light-water-cooled nuclear power plants. To control the risk of severe care damage during station blackout accidents at a given plant, the reliability of the emergency diesel generators (EDGS) to start and load-run upon demand must be maintained at a sufficiently high level. The minimum EDG reliability, which we denote by RT, is targeted at either 0.95 or 0.975 per nuclear unit consistent with the reliability level that the plant operator assumed in the coping analysis for station blackout. In 1992 the US Nuclear Regulatory Commission (NRC) considered an amendment that would require licensees to test and monitor EDG reliability against performance-based criteria that indicate possible degradation from the EDG target reliability levels. They originally proposed the following set of fixed sample-size triggers for use in monitoring EDG reliability. The purpose of this report is to compare the performance of the proposed triggers with corresponding alternative sequential variable sample-size triggers which potentially permit earlier detection of EDG reliability degradation without significantly increasing the false alarm rate. The comparison is to be done in a simulated use environment by means of Monte Carlo simulation. We are also interested in the inverse conditional probabilities of reliability degradation given that a trigger has occurred.
Book Synopsis A Review of Emergency Diesel Generator Performance at Nuclear Power Plants by : James Charles Higgins
Download or read book A Review of Emergency Diesel Generator Performance at Nuclear Power Plants written by James Charles Higgins and published by . This book was released on 1985 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Enhancement of On-site Emergency Diesel Generator Reliability : Final Report by : Gerald L. Boner
Download or read book Enhancement of On-site Emergency Diesel Generator Reliability : Final Report written by Gerald L. Boner and published by . This book was released on 1979 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Emergency Diesel Generator: Maintenance and Failure Unavailability, And Their Risk Impacts, NUREG/CR-5994, U.S. Nuclear Regulatory Commission, November 1994 by :
Download or read book Emergency Diesel Generator: Maintenance and Failure Unavailability, And Their Risk Impacts, NUREG/CR-5994, U.S. Nuclear Regulatory Commission, November 1994 written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Use of Performance-monitoring to Improve Reliability of Emergency Diesel Generators by : Jeffrey Daniel Dulik
Download or read book Use of Performance-monitoring to Improve Reliability of Emergency Diesel Generators written by Jeffrey Daniel Dulik and published by . This book was released on 1998 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Emergency Diesel Generator written by and published by . This book was released on 1994 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emergency Diesel Generators (EDGs) provide on-site emergency alternating current (ac) electric power for a nuclear plant in the event that all off-site power sources are lost. Existing regulations establish requirements for designing and testing of these on-site power sources to reduce to an acceptable level the probability of losing all ac power sources. Operating experience with EDGs has raised questions about their testing and maintenance to achieve the EDG reliability levels and the total EDG unavailability experienced (fraction of time EDG is out-of-service due to testing, maintenance, and failures). In this report, recent operating experience is used to assess EDG unavailability due to testing, maintenance, and failures during reactor power operation and during plant shutdown. Recent data show an improvement in EDG reliability, but an increase in EDG unavailability due to maintenance, a significant portion of which is due to routinely scheduled maintenances. Probabilistic safety assessments (PSAs) of selected nuclear power plants are used to assess the risk impact of EDG unavailability due to maintenance and failure during power operation, and during different stages of plant shutdown. The results of these risk analyses suggest qualitative insights for scheduling EDG maintenance that will have minimal impact on risk of operating nuclear power plants.
Book Synopsis Safety Evaluation Report Related to the Operability and Reliability of Emergency Diesel Generators Manufactured by Transamerica Delaval, Inc by : C. Berlinger
Download or read book Safety Evaluation Report Related to the Operability and Reliability of Emergency Diesel Generators Manufactured by Transamerica Delaval, Inc written by C. Berlinger and published by . This book was released on 1986 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nuclear Regulatory Commission Issuances by : U.S. Nuclear Regulatory Commission
Download or read book Nuclear Regulatory Commission Issuances written by U.S. Nuclear Regulatory Commission and published by . This book was released on 2002 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Detailed Study of Emergency Diesel Generator Performance Using EPIX by :
Download or read book Detailed Study of Emergency Diesel Generator Performance Using EPIX written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A recent report was published by the U.S. Nuclear Regulatory Commission - Industry-Average Performance for Components and Initiating Events at U.S. Commercial Nuclear Power Plants, NUREG/CR-6928. That report characterized industry performance (generally covering 1998 - 2002) for 51 component types found in commercial nuclear power plants. For example, for emergency diesel generators, three failure modes were identified: fail to start and reach rated speed and voltage, fail to load and run for one hour, and fail to run beyond one hour. Data from the U.S. industry contained in the Equipment Performance and Information Exchange (EPIX) database maintained by The Institute for Nuclear Power Operations were used to evaluate the failure probabilities and rates for these failure modes, covering 1998 - 2002. The software package Reliability and Availability Database System (RADS) was used to search and process the EPIX data. In addition, train test and maintenance unavailability was characterized for 34 train types. As a follow-on effort to this report, several components will be analyzed in more detail each year. These detailed studies include more recent data and analyze various subcategories such as manufacturer, system, size and type (as applicable). In addition, engineering insights such as piece part contribution to each failure mode and failure cause will be determined. This paper summarizes the preliminary results for emergency diesel generators. EPIX data coverage was expanded to include 1998 - 2007 and reliability results were compared with unplanned demand performance (bus under voltage events requiring the emergency diesel generator to start, load and run) over the same period. In addition, performance by manufacturer was evaluated. Finally, piece part contributions and failure causes were determined for each failure mode.
Book Synopsis Proposed Staff Actions to Improve and Maintain Diesel Generator Reliability by :
Download or read book Proposed Staff Actions to Improve and Maintain Diesel Generator Reliability written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Performance of Emergency Diesel Generators in Restoring Power to Their Associated Safety Buses by : Theodore C. Cintula
Download or read book Performance of Emergency Diesel Generators in Restoring Power to Their Associated Safety Buses written by Theodore C. Cintula and published by . This book was released on 1991 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Risk Based Optimization of the Frequency of EDG On-line Maintenance at Hope Creek by :
Download or read book Risk Based Optimization of the Frequency of EDG On-line Maintenance at Hope Creek written by and published by . This book was released on 1996 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper presents a study to optimize the frequency of on-line maintenance of the emergency diesel generators at Hope Creek. This study was directed towards identifying, analyzing, and modifying maintenance planning and scheduling practices to assure the high availability of emergency diesel generators. Input from application of a recently developed reliability model, from considerations of probabilistic safety assessment, plant-specific experience, insights from personnel involved in EDG maintenance, and other practical issues were used to define a maintenance schedule that balances its beneficial and adverse impacts. Conclusions resulted in feasible recommendations to optimize and reduce the frequency of diesel on-line maintenance, allowing additional resources to better maintain other equipment important to safety.
Book Synopsis Reliability Study: Emergency Diesel Generator Power System, 1987-1993 by : G. M. Grant
Download or read book Reliability Study: Emergency Diesel Generator Power System, 1987-1993 written by G. M. Grant and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Reliability Program for Emergency Diesel Generators at Nuclear Power Plants by :
Download or read book A Reliability Program for Emergency Diesel Generators at Nuclear Power Plants written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Prospective Trend of Low Reliability Emergency Diesel Generators by : T. Cintula
Download or read book Prospective Trend of Low Reliability Emergency Diesel Generators written by T. Cintula and published by . This book was released on 1992 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Enclosing NUREG/CR 0660, "Enhancement of on Site Emergency Diesel Generator Reliability". by :
Download or read book Enclosing NUREG/CR 0660, "Enhancement of on Site Emergency Diesel Generator Reliability". written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
