A major four-year research and development program on boiling water reactor pipe cracking jointly sponsored by a Boiling Water Reactor Owners Group and the Electric Power Research Institute has been completed. The purpose of this paper is to review the technical progress accomplished in solving this important utility problem. Pipe cracking information and the chracteristics of cracking is presented. A model for the intergranular stress corrosion cracking of welded Types AISI 304 and 316 stainless steels is described. The development qualification and implementation of engineering solutions or pipe remedies for the mitigation of the problem for operating plants and plants under construction are reviewed.

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