LESSON LEARNED FROM THE SYSTEMS RELIABILITY BENCHMARK EXERCISE
Probabilistic methodologies are being more and more used to assess risks associated with industrial plants and, in particular, with nuclear power reactor operation. As a contribution to the identification of problems areas and to assess methods and procedures, JRC-Ispra has organised a first benchmark exercise on systems reliability. 17 organizations of 8 European countries were involved; the exercise lasted two years. It consisted in the analysis of a same system (auxiliary feedwater system of the EdF nuclear power plant in Paluel) performed according to different phases (qualitative analysis logical modelling probabilistic evaluations) by the different teams in an independent way. It appears that relevant differences are introduced by noneliminable subjective assumptions to overcome incompleteness in documentation and by the completeness of the individual analysis. Moreover particular aspects such as human factors and common cause failure analysis are still far from a common way of thinking of the safety analysts. JRC will organize in the next years a series of exercises on particular topics: human factors, CCF and event tree analysis in order to define common analysis procedures at an European level.
Bibliographic Reference: 3EME SEMINAIRE EUROPEEN SUR LA SECURITE DES SYSTEMES, CANNES (FRANCE), SEPT. 19-21, 1984 WRITE TO CEC LUXEMBOURG, DG XIII/A2, POB 1907 MENTIONING PAPER E 31573 ORA
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Record Number: 1989124003800 / Last updated on: 1987-01-01
Available languages: en