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Generally, a component installed in a plant is maintained periodically, which lengthens its observed lifetime. Because maintenance policies vary from plant to plant, data from different plants cannot be pooled until the effect of this is removed. A method has been developed and is being validated using as sample components feed water pumps and pneumatic valves of a nuclear power station. The lives of the components are assumed to have a Weibull distribution with shape parameter greater than one. The continuous time stochastic filtering problem which describes the components' evolution towards failure is solved directly and by the convergence of a discrete time approximation.

Additional information

Authors: BESI A, JRC Ispra Estab. (IT);CLAROTTI C A, ENEA Casaccia Roma (IT);PIEPSZOWNIK L, EDF, Etudes et Recherches (FR)
Bibliographic Reference: Paper presented: International Conference on Thermal Reactor Safety, ENS/ANS Topical Meeting, Avignon (FR), Oct. 2-7, 1988
Availability: Available from (1) as Paper EN 34163 ORA
Record Number: 198910320 / Last updated on: 1994-12-01
Original language: en
Available languages: en
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