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In May 1998, a leak occurred in the reactor heat removal system (RHRS) of the French Civaux 1 nuclear power plant. A 180-mm through-wall crack was found on an elbow in the mixing area of high and low temperature fluids. After metallurgical examinations of austenitic stainless steel (AISI 304L) components and an analytical damage evaluation, the major root cause for cracking was identified as high...
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