Failure mode analysis using state variables derived from fault trees with application
Fault Tree Analysis (FTA) is used extensively to assess both the qualitative and quantitative reliability of engineered nuclear power systems employing many subsystems and components. FTA is very useful, but the method is limited by its inability to account for failure mode rate-of-change interdependencies (coupling) of statistically independent failure modes. The state variable approach (using FTA-derived failure modes as states) overcomes these difficulties and is applied to the determination of the lifetime distribution function for a heat pipe-thermoelectric nuclear power subsystem. Analyses are made using both Monte Carlo and deterministic methods and compared with a Markov model of the same subsystem.
- Research Organization:
- Los Alamos National Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6238023
- Report Number(s):
- LA-UR-81-2595; CONF-810905-5; ON: DE81030239; TRN: 81-016626
- Resource Relation:
- Conference: ANS/ENS topical meeting on probabilistic risk assessment, Post Chester, NY, USA, 20 Sep 1981
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SPACE POWER REACTORS
FAILURE MODE ANALYSIS
COUPLING
FAULT TREE ANALYSIS
HEAT PIPES
MARKOV PROCESS
MONTE CARLO METHOD
RELIABILITY
THERMOELECTRIC GENERATORS
DIRECT ENERGY CONVERTERS
MOBILE REACTORS
POWER REACTORS
REACTORS
STOCHASTIC PROCESSES
SYSTEM FAILURE ANALYSIS
SYSTEMS ANALYSIS
NESDPS Office of Nuclear Energy Space and Defense Power Systems
210600* - Power Reactors
Auxiliary
Mobile Package
& Transportable