This paper offers an extension of reliability analysis of passive systems with various competing failure modes involving performance degradation. The failure probability on a specific mode is derived. Using this probability, the dominant failure mode on the system can be predicted. A practical example is presented to analyze a passive system with two kinds of major failure modes - natural circulation stoppage due to e.g., isolation valve closure (a catastrophic failure) and heat transfer process degradation due to e.g., deposit thickness on component surfaces (a degradation failure). Reliability modeling of an individual failure mode and system reliability analysis are presented and results are discussed.
Reliability analysis of passive systems with multiple competing failure modes involving performance degradation
Burgazzi, L.
2015-01-01
Abstract
This paper offers an extension of reliability analysis of passive systems with various competing failure modes involving performance degradation. The failure probability on a specific mode is derived. Using this probability, the dominant failure mode on the system can be predicted. A practical example is presented to analyze a passive system with two kinds of major failure modes - natural circulation stoppage due to e.g., isolation valve closure (a catastrophic failure) and heat transfer process degradation due to e.g., deposit thickness on component surfaces (a degradation failure). Reliability modeling of an individual failure mode and system reliability analysis are presented and results are discussed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
