Community Research and Development Information Service - CORDIS


Knowledge of the reliability data of industrial plant components is an essential pre-condition for carrying out safety analyses and choosing the right maintenance policy. The sources from which such data can be drawn are generally reliability databases. These provide information which is generally derived from applications in the nuclear and military sectors. This report presents the results of the collection and analysis of reliability data relating to refinery machinery and components. Particular attention has been paid to centrifugal pumps, heat exchangers, volumetric compressors, air coolers and safety valves. The data required to determine the failure rate of the machinery in question has been obtained by examining requests for maintenance (number and type of maintenance work carried out) and determining the periods of operation of the machines during the entire period for which information is available (approximately 18 months). The statistical analysis of fault data was carried out assuming that the failure rate is constant in time and applying criteria of uniformity (identical failure rate for all machines in the same category) and diversity (variable failure rate within each machine category) using both the classical and the Bayesian approach.

Additional information

Authors: ARSENIS S P, JRC Ispra (IT);BEVILACQUA M, Università di Ancona, Dipartimento di Energetica (IT);GIACCHETTA G, Università di Ancona, Dipartimento di Energetica (IT)
Bibliographic Reference: Paper presented: XXI Convegno Nazionale ANIMP, Parma (IT), October 20-22, 1994
Availability: Available from (1) as Paper IT 38892 ORA
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