Community Research and Development Information Service - CORDIS

Abstract

The CEDB is a centralized data bank collecting, at the European level, data describing the operational behaviour of components (operational history, description of the failure events) of nuclear power plants (NPP) operated in various European countries. It is one of the four data banks of the European Reliability Data System, developed and managed by the JRC Ispra, collecting, organizing and disseminating information on NPP operation with the main aim of promoting safety, both at the design stage and at the operational level. This paper reports on some analyses performed with the main aim of enriching our knowledge on the reliability features of the components monitored. In addition to the direct inference of reliability parameters (operating failure rate, on-demand probability, mean repair rate) performed through the data treatment programmes inserted in the enquiry procedures, several other approaches have been followed. item"a)" under bar Multiple Correspondence Analysis (MCA)": a technique well-suited to investigate possible interrelations between observations characterized by both qualitative attributes (i.e. expressed by literal descriptors) and quantitative attributes (i.e. expressed by numerical values). Data describing the sudden (complete) failures occurred to a set of pumps (417 components) have been treated by MCA. item"b)" under bar "Survival Analysis": non-parametric and parametric methods have been applied to censored failure data of a set of pumps. item"c)" under bar "Quasi independence analysis". The failure rate of a set of gate valves has been investigated. Two qualitative covariates (type of system in which the components operates and plant location) were considered.par

Additional information

Authors: BALESTRERI S, JRC-ISPRA;EDF, F;BESI A, JRC-ISPRA;EDF, F;COLOMBO A G, JRC-ISPRA;EDF, F;HAARSMA R J, JRC-ISPRA;EDF, F;PIEPSZOWNIK L, JRC-ISPRA;EDF, F;PROCACCIA H JRC-ISPRA, JRC-ISPRA;EDF, F;EDF, F, JRC-ISPRA;EDF, F
Bibliographic Reference: INTERNATIONAL CONFERENCE ON THERMAL REACTOR SAFETY, ENS/ANS TOPICAL MEETING, AVIGNON/F, OCT. 2-7, 1988, AVAILABILITY: CEC-LUXEMBOURG, DG-XIII/A2, BP 1907, MENTIONING PAPER ORA 33876 E
Availability: Can be ordered online
Record Number: 1989126092600 / Last updated on: 1989-05-01
Category: PUBLICATION
Available languages: en