Using PRA in support of maintenance optimisation

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Abstract

For a number of years the Plant Specific Probabilistic Risk Assessment of Koeberg Nuclear Power Station has been used to support maintenance optimisation. By ranking all components by their importance to nuclear safety we have ensured that the most stringent maintenance regimes are only applied to components where it is absolutely necessary. Further, the overall level of safety is set by our licensing authority. This implies that a certain level of reliability is required for each component involved in safety. By monitoring performance and using the Bayesian analysis technique, it can be deduced whether an acceptable reliability is being achieved and whether a reduction in the maintenance frequency may be justified.

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Cited by (4)

  • Risk Analysis in Maintenance

    2008, Springer Series in Reliability Engineering
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