Author: T. A. MorganPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Investigation of an Emergency Diesel Generator Reliability Program
Author: T. A. MorganTechnical Evaluation Report Emergency Diesel Generator Technical Specifications Study Results
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The purpose of this report is to review technical specifications for emergency diesel generators in the context of new information developed in the Nuclear Plant Aging Research Program and the application of current NRC regulatory concepts and knowledge. Aging and reliability relationships related to the standard technical specifications are reviewed and supported by data and published information to ensure that conservative and beneficial specifications are identified. Where technical specifications could adversely influence aging and reliability, the technical issues and reasonable alternatives are identified for consideration. This report documents and spans the technical progress from the published and approved regulatory documents to the current knowledge basis. This ensures that the technical bases for the technical specifications discussed are documented and relatively complete subject information is contained in one document. The Pacific Northwest Laboratory (PNL) has participated in the Nuclear Plant Aging Research (NPAR) Program directed by the Nuclear Regulatory Commission's (NRC) Office of Nuclear Regulatory Research, Division of Engineering. The NPAR study of emergency diesel generator aging was performed in two phases. In Phase I, plant operating experience, ~ata, expert opinion and statistical methods were used to produce a new data base related to aging, reliability, and operational readiness of nuclear service diesel generators. Phase II was chiefly concerned with aging mitigation measures.
A Reliability Program for Emergency Diesel Generators at Nuclear Power Plants
Author: Trial Application of Reliability Technology to Emergency Diesel Generators at the Trojan Nuclear Power Plant
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
In this paper, a trial application of reliability technology to the emergency diesel generator system at the Trojan Nuclear Power Plant is presented. An approach for formulating a reliability program plan for this system is being developed. The trial application has shown that a reliability program process, using risk- and reliability-based techniques, can be interwoven into current plant operational activities to help in controlling, analyzing, and predicting faults that can challenge safety systems. With the cooperation of the utility, Portland General Electric Co., this reliability program can eventually be implemented at Trojan to track its effectiveness.
Enhancement of On-site Emergency Diesel Generator Reliability : Final Report
Author: Gerald L. BonerPublisher:
ISBN:
Category : Diesel motor
Languages : en
Pages : 274
Book Description
Risk-informed, Performance-based Regulatory Implications of Improved Emergency Diesel Generator Reliability
Author: Shantel Mistilynn UttonPublisher:
ISBN:
Category :
Languages : en
Pages : 216
Book Description
RELIABILITY STUDY: EMERGENCY DIESEL GENERATOR POWER SYSTEM, 1987-1993... NUREG
Author: U.S. Nuclear Regulatory CommissionPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Reliability Study: Emergency Diesel Generator Power System, 1987-1993
Author: G. M. GrantPublisher:
ISBN:
Category : Boiling water reactors
Languages : en
Pages :
Book Description
Energy Research Abstracts
Author: On Monitoring Nuclear Power Plant Emergency Diesel Generator Reliability
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 56
Book Description
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.