Within the licensing process of the Atucha II PHWR (Pressurized Heavy Water Reactor) the BEPU (Best Estimate Plus Uncertainty) approach has been selected for issuing of the Chapter 15 on FSAR (Final Safety Analysis Report). The key steps of the entire process are basically two: a) the selection of PIE (Postulated Initiating Events) and, b) the analysis by best estimate models supported by uncertainty evaluation. The key elements of the approach are: 1) availability of qualified computational tools including suitable uncertainty method; 2) demonstration of quality; 3) acceptability and endorsement by the licensing authority. The effort of issuing Chapter 15 is terminated at the time of issuing of the present paper and the safety margins available for the operation of the concerned NPP (Nuclear Power Plant) have been quantified.
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机译:在Atucha II PHWR(加压重水反应堆)的许可过程中,选择了BEPU(最佳估计加上不确定性)方法来发布关于FSAR(最终安全分析报告)的第15章。整个过程的关键步骤基本上是两个:a)选择PIE(假定的发起事件),以及b)通过不确定性评估支持的最佳估计模型进行分析。该方法的关键要素是:1)合格的计算工具的可用性,包括适当的不确定性方法; 2)展示质量; 3)许可机构的接受和认可。第15章的发行工作在本文件发行时终止,有关NPP(核电厂)运行的可用安全裕度已量化。
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