AN APPROACH TO RISK-INFORMED QA CLASSIFICATION

摘要

This paper describes the screening process for qualityrnassurance (QA) classification of structures, systems, andrncomponents (SSCs) of the proposed Monitored GeologicalrnRepository (MGR). The QA classification process isrnapplied to SSCs that are important to safety (preclosure)rnand important to waste isolation (postclosure) inrnaccordance with the definitions of proposed rule 10 CFRrn631. The screening criteria are based on the risk-informed,rnperformance-based regulations embodied in the proposedrnrule. SSCs are assigned one of three Quality Level (QL)rnclassifications for the purpose of applying the qualityrnassurance requirements of 10 CFR 50 Appendix B.