Reliability analysis of the decay heat removal system of a 1000-MW(e) gas-cooled fast breeder reactor

Journal Article · Tue Mar 01 00:00:00 EST 1977 · Nucl. Technol.; (United States)

OSTI ID:7294337

Bittermann, D ^[1]; Wehling, J

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1. Kraftwerk Union AG, Erlangen, Ger.

A reliability analysis for the decay heat removal system of a 1000-MW--(e) gas-cooled fast breeder reactor (GCFBR) has been carried out. ITT relates only to the GCFBR specific systems required after the maximum depressurization accident, and normal shutdown. Non-GCFBR specific systems such as the electrical supply system and the containment back-pressure system were not included in the analysis. For these analyses, the method of fault trees was used to describe the different failure combinations of the system. The calculations were performed with the system analysis program SAP-1, which combines analytical and simulation methods to find the failure probability and the unavailability of the system. The results of the analysis show that the unavailability governs the reliability of the system; a computed value of 3 x 10/sup -4/ was obtained for the unavailability of the system after a maximum depressurization accident, and a value of 4 x 10/sup -8/ was obtained for the unavailability of the system after normal shutdown.

• OSTI ID: 7294337
• Journal Information: Nucl. Technol.; (United States), Vol. 32:3
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
GCFR TYPE REACTORS
RHR SYSTEMS
RELIABILITY
AFTER-HEAT REMOVAL
FAILURE MODE ANALYSIS
FAILURES
HEAT TRANSFER
TEMPERATURE GRADIENTS
BREEDER REACTORS
COOLING SYSTEMS
ENERGY TRANSFER
EPITHERMAL REACTORS
FAST REACTORS
FBR TYPE REACTORS
GAS COOLED REACTORS
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
REACTORS
REMOVAL
SYSTEM FAILURE ANALYSIS
SYSTEMS ANALYSIS
210500* - Power Reactors
Breeding