Abstract
This chapter describes the embrittlement processes in WWER reactor pressure vessel (RPV) materials during operation – radiation embrittlement and thermal ageing. Current trend curves for both types of WWER RPV materials are given and explained. Surveillance specimen programmes are shown, as their results are used for RPV integrity and lifetime evaluation. Finally, annealing of the RPV is proposed as the most efficient mitigation measure.
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More From: Irradiation Embrittlement of Reactor Pressure Vessels (RPVs) in Nuclear Power Plants
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