Abstract This paper evaluated the effects of chloride transients that may occur in boiling water reactor on stress corrosion cracking of pressure vessel low alloy steels. Crack growth rate and the delayed cracking response were enhanced by chloride transient in normal water chemistry while no chloride effect was observed in hydrogen water chemistry. The effects of chloride concentration, stress intensity factor, corrosion potential, and steel heat on the crack growth were discussed. The results from this work provide direct inputs to crack growth disposition models for low alloy steels, water chemistry guidelines and the plant operation practice during chloride transient.

中文翻译：

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氯化物瞬变对高温水中压力容器低合金钢应力腐蚀裂纹的影响

摘要 本文评价了沸水反应堆中可能发生的氯化物瞬变对压力容器低合金钢应力腐蚀开裂的影响。在正常水化学中，氯化物瞬变增强了裂纹扩展速率和延迟裂纹响应，而在氢水化学中未观察到氯化物效应。讨论了氯化物浓度、应力强度因子、腐蚀电位和钢热对裂纹扩展的影响。这项工作的结果为低合金钢的裂纹扩展处置模型、水化学指南和氯化物瞬变期间的工厂操作实践提供了直接输入。