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NKS Programme Area:
NKS-R
Research Area:
Organisation and safety culture
Report Number:
NKS-7
Report Title:
Systematisk underhållsanalys med beslutsstöd. Metodik och verktyg för effektivisering av underhållsprogram
Activity Acronym:
RAK-1
Authors:
Kaisa Simola, Kari Laakso, Joan Dorrepaal, Pekka Skogberg
Abstract:
This report describes an approach to evaluate the effectiveness of test and
maintenance programs of technical systems used during several years. The method
combines an analysis of the historical data on faults and repairs with an analysis of
the history of periodic testing and preventive maintenance action programs.
The application of the maintenance analysis from the methodological point of
view in the reliability centered maintenance (RCM) project for Barseback nuclear
power plant is described. In order to limit the analysis resources, a method for
ranking of objects for maintenance analysis is needed. Preliminary suggestions for
changes in maintenance action programs are based on signals from simple
maintenance indicators and qualitative analysis of underlying data on failures and
maintenance. To facilitate generation of maintenance indicators, and make the
maintenance analysis more efficient, a powerful and suitable data treatment tool is
needed for analysis of the work order history. In the final maintenance decisions,
additional decision criteria must be taken into account, and thus a more formal
decision analysis is often needed for decision support.