核电厂乏燃料干式贮存筒的氯致应力腐蚀开裂与缓解措施

Chloride-Induced Stress Corrosion Cracking and Its Mitigation Measures of Spent Fuel Dry Storage Canister in Nuclear Power Plants

摘要: 概述了氯化物沉积和潮解、表面温度和相对湿度以及焊接残余应力等因素对乏燃料干式贮存筒氯致应力腐蚀开裂（CISCC）的影响，在此基础上提出了贮存筒的CISCC敏感性分级策略，并介绍了潜在的缓解贮存筒氯致应力腐蚀开裂的措施和建议。

Abstract: The effects of the deposition and deliquescence of chloride salts, surface temperature and relative humidity and weld residual stress on the chloride-induced stress corrosion cracking (CISCC) of dry storage canister were summarized. Based on this, the ranking criteria of CISCC susceptibility was proposed and the potential measures and suggestions to mitigate and prevent CISCC were introduced.