ABSTRACT

Fitness-for-service may be defined as the quantitative analysis of the adequacy of a component to perform its function in the presence of a defect. Fitness-for-service is a technique used to make safe and cost-effective run-or-repair decisions. “It may be contrasted with the best quality that can be achieved within a given set of circumstances, which may be inadequate for some exacting requirements, and needlessly uneconomic for others which are less demanding” [Wells].