0.06 RiskInformed ScaleIn developing the performance assessment process, one of the tasks was to establish riskinformed thresholds for PIs and corresponding thresholds for inspection findings, so that indications of performance degradation obtained from inspection findings and from changes in PI values could be put on an equal footing. The concept for setting these performance thresholds included consideration of risk and regulatory response to different levels of licensee performance. The approach was intended to be consistent with other NRC riskinformed regulatory applications and policies as well as consistent with regulatory requirements and limits. The primary attributes of the original concept were: the scheme should include multiple levels with clearly defined thresholds to allow unambiguous observation and assessment of declining (or improving) performance, the thresholds should be risk informed to the extent practical, but should accommodate defenseindepth and indications based on existing regulatory requirements and safety analyses, the risk implications and regulatory actions associated with each performance band and associated threshold should be consistent with other NRC risk applications, and based on existing criteria where possible (e.g., Regulatory Guide [RG] 1.174 [Ref. 19]),
0.06 RiskInformed ScaleIn developing the performance assessment process, one of the tasks was to establish riskinformed thresholds for PIs and corresponding thresholds for inspection findings, so that indications of performance degradation obtained from inspection findings and from changes in PI values could be put on an equal footing. The concept for setting these performance thresholds included consideration of risk and regulatory response to different levels of licensee performance. The approach was intended to be consistent with other NRC riskinformed regulatory applications and policies as well as consistent with regulatory requirements and limits. The primary attributes of the original concept were: the scheme should include multiple levels with clearly defined thresholds to allow unambiguous observation and assessment of declining (or improving) performance, the thresholds should be risk informed to the extent practical, but should accommodate defenseindepth and indications based on existing regulatory requirements and safety analyses, the risk implications and regulatory actions associated with each performance band and associated threshold should be consistent with other NRC risk applications, and based on existing criteria where possible (e.g., Regulatory Guide [RG] 1.174 [Ref. 19]),