Components exposed to high temperature conditions under which creep or other time dependent processes occur suffer degradation of their properties over long exposure periods. This damage subsequently leads to cracking and failure. It is important to gain the maximum economic benefit from extended operating lives in such plant while ensuring safe operation and over the past decade, many methods have been proposed and used for the evaluation of remaining life. This review examines the currently favoured models for creep life assessment of structures. Particular emphasis is placed on the current status and viability of the methods when applied to real components which may contain welds.
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