Outcomes of the FALCON code analysis-related part of the STARS-ENSI Service Project on Evaluation of the new U.S.NRC RIA Fuel Safety Criteria and Application to the Swiss Reactors are presented. Substantial conservatism of the updated safety limits for high-temperature and PCMI cladding failure, as proposed in the NRC Regulatory Guide RG 1.236, is confirmed. Applicability of the updated failure limits to fuel safety analysis in the Swiss PWRs, as applied to standard fuel designs using UO2 fuel pellets and SRA Zry-4 as cladding materials is discussed. Conducting of new integral RIA tests with irradiated samples using doped- and gadolinia fuel pellets to support appropriate fuel safety criteria for RIA events is recommended.

介绍了评估新 USNRC RIA 燃料安全标准和在瑞士反应堆中应用的 STARS-ENSI 服务项目 FALCON 代码分析相关部分的结果。NRC 监管指南 RG 1.236 中提出的高温和 PCMI 包层故障的更新安全限制的实质性保守性得到确认。讨论了更新的失效限制对瑞士压水堆燃料安全分析的适用性，适用于使用 UO2 燃料芯块和 SRA Zry-4 作为包壳材料的标准燃料设计。建议使用掺杂和钆燃料芯块对辐照样品进行新的整体 RIA 测试，以支持 RIA 事件的适当燃料安全标准。