LIFE CYCLE DOCUMENTATION - AN ESSENTIAL TOOL FOR PLANT LIFE MANAGEMENT AND AGEING MANAGEMENT

摘要

Systems, structures and components (SSC) that are relevant to safety and availability must have a quality level that meets the requirements throughout plant service life. Both in ageing management and in plant life management, based on a proven quality as a starting point (e.g. after design and manufacture) possible damage / degradation mechanisms have to be controlled in operation in order to guarantee or at least maintain this quality status. The intensity of these measures depends on the relevance of the individual SSC. On the background of actual state of knowledge the efficiency of the procedures has to be checked, regularly and individually, and the actual quality status of every SSC has to be compared to the requirements. This means, system weakness analysis / system health assessments have to be performed; this can only be done, successfully, using a comprehensive data basis on every relevant SSC (knowledge basis). Life cycle documentation is part of a person-independent knowledge basis about every relevant SSC. Life cycle documentation gives a comprehensive chronological overview of all relevant quality related documentations and reports as well as - on a yearly basis - of every planned activity (like surveillance, maintenance and inspection measures) and of every event / incident (internal and external sources) that may affect quality including the assessments. Actual knowledge is taken into account in life cycle documentation, too.