An innovative approach to the damage mechanisms identification methodology for pressure equipment

摘要

Implementation of the methodology for quantitative risk analysis, usually based on RBI (Risk Based Inspection), is heavily influenced with the methods for damage mechanisms identification. Same analysis may give various results depending on the adopted operating parameters in a given time. The question arises as to whether such an analysis and the results of the analysis may represent initial data for some subsequent analysis that can be carried out in the following period, regardless of the reasons for the implementation. The aim of this paper is to demonstrate application of a modified methodology for damage mechanism identification. The extension of well-known methodology shown in ASME PCC 3 standard is in the manner in which the damage mechanisms are identified: distinction will be made from active and passive (potential) damage mechanisms, and as well as documentation of conditions under which passive damage mechanisms can become active. Concept of barriers will be also presented.