安全壳地坑过滤器碎渣源项的踏勘及结果评估方法
The Method of Debris Source Walkdown and Result Evaluation for Containment Sump Strainer
摘要:
地坑过滤器是核安审的重要审查专题，为评估其性能是否满足设计要求，需对核电厂安全壳内部进行踏勘以确定其潜在碎渣源项。本文结合NEI 02-01导则的要求与具体工程实践经验，介绍了针对国内新建核电厂安全壳地坑过滤器上游碎渣源项的踏勘方法，说明了准备踏勘前期工作的要求，阐述了各项碎渣源项与流道踏勘的实施方案，提出了踏勘结果的评估及处理方法。
Abstract:
Sump Strainer is an important topic of nuclear safety review. To evaluate its performance, walkdown survey is necessary to verify potential debris source inside the containment. Based on requirements of NEI 02-01 and engineering experience, this paper introduces the method of debris source walkdown for containment sump strainers in Chinese newly built nuclear power plant, describes the requirements for walkdown preparation work, expounds specific implementation programs for different debris sources and flow path, and puts forward the evaluation and treatment method of walkdown result.
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