Residual stress and integrity management issues in power plant

Bouchard, P. J. and Soanes, T. P. T. (2005). Residual stress and integrity management issues in power plant. In: IMechE Seminar: Post weld heat treatment and management of residual stress, 2005, London, UK, IMechE.

Abstract

This paper provides some insights into the origins of residual stress in engineering plant and illustrates when it can have an important influence on the life and structural integrity of pressurised power plant. The management of residual stress is reviewed with particular reference to post-weld heat treatment (PWHT) requirements of design and construction codes and when more detailed structural assessment approaches, that explicitly account for residual stress, have to be used. Finally a case study of a power station steam header weld repair is used to illustrate residual stress management issues.

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