An examination of reliability critical items in liquid metal reactors: An analysis by the Centralized Reliability Data Organization (CREDO)

Conference · Thu Jan 01 04:00:00 EST 1987

OSTI ID:6175445

Humphrys, B L; Haire, M J; Koger, K H; Manneschmidt, J F; Setoguchi, K; Nakai, R; Okubo, Y

The Centralized Reliability Data Organization (CREDO) is the largest repository of liquid metal reactor (LMR) component reliability data in the world. It is jointly sponsored by the US Department of Energy (DOE) and the Power Reactor and Nuclear Fuel Development Corporation (PNC) of Japan. The CREDO data base contains information on a population of more than 21,000 components and approximately 1300 event records. A conservative estimation is that the total component operating hours is approaching 3.5 billion hours. Because data gathering for CREDO concentrates on event (failure) information, the work reported here focuses on the reliability information contained in CREDO and the development of reliability critical items lists. That is, components are ranked in prioritized lists from worst to best performers from a reliability standpoint. For the data contained in the CREDO data base, FFTF and JOYO show reliability growth; EBR-II reveals a slight unreliability growth for those components tracked by CREDO. However, tabulations of events which cause reactor shutdowns decrease with time at each site.

• Research Organization: Oak Ridge National Lab., TN (USA); Power Reactor and Nuclear Fuel Development Corp., Oarai, Ibaraki (Japan). Oarai Engineering Center; Power Reactor and Nuclear Fuel Development Corp., Tokyo (Japan); Mitsubishi Research Inst., Tokyo (Japan)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6175445
• Report Number(s): CONF-870917-2; ON: DE87010598
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210500* -- Power Reactors
Breeding
BREEDER REACTORS
DATA
DATA BASE MANAGEMENT
DATA COMPILATION
EPITHERMAL REACTORS
FAST REACTORS
FBR TYPE REACTORS
INFORMATION
LIQUID METAL COOLED REACTORS
LMFBR TYPE REACTORS
MANAGEMENT
NUMERICAL DATA
REACTOR COMPONENTS
REACTORS
RELIABILITY