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Proceedings of the Eighth International Conference on Probabilistic Safety Assessment & Management (PSAM)

Michael G. Stamatelatos
Michael G. Stamatelatos
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Harold S. Blackman
Harold S. Blackman
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ASME Press
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The current standard PSA tools do not adequately address important aging issues. For example, the component and system reliability models are based on the “component constant failure rate” assumption. In case of equipment premature aging, inappropriate maintenance or expiration of specified lifetime, this assumption could not be valid anymore. Consequently, time dependent failure rate models could be applied.

In Aging PSA, the time-depended reliability models could be applied for active and passive components, which are susceptible to aging and for which the aging mechanisms and Stressors can cause component degradation. Also, the Aging PSA could explicitly model the effects of...

1. Task Specification/Goal of the Study
2. Unavailability as a Function of Component Age
3. Initial Data Specification
4. Data Assessment Approach
5. Presentation of Results
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