Document: NUREG-0800
Document ID: e32f0820-4e33-476e-aa36-4ca8c2c64af0
Document Type: srp
Title: Use of Probabilistic Risk Assessment in Plant-Specific, Risk-Informed Decisionmaking:
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0119/ML011940192.pdf
Revision Date: 2023-06
Chapter: 19
Section ID: 19.0
CFR Part: 
CFR Title: 

Content:
lly need to show that in light of a small or non-existent increase in risk and a reduced level of conservatism, defense-in-depth and sufficient safety margins are maintained. Findings of acceptability should be supported with logical bases built from an evaluation of the considerations given in Section III of this SRP chapter. Reviewers should also confirm that sufficient information is provided in accordance with the requirements of this SRP chapter, and that the evaluation supports the following conclusions, to be included in the staff's safety evaluation report. General & The proposed change meets the current regulations unless it is explicitly related to a requested exemption or rule change, i.e., a "specific exemption" under 10 CFR 50.12 or a "petition for rulemaking" under 10 CFR 2.802. * The proposed change is consistent with the defense-in-depth philosophy. * The proposed change maintains sufficient safety margins. * When proposed changes result in an increase in CDF or risk, the increases are small and are consistent with the intent of the Commission's Safety Goal Policy Statement. * The impact of the proposed change is monitored using performance-based strategies. * All safety impacts of the proposed change are evaluated in an integrated manner as part of an overall risk management approach in which the licensee is using risk analysis to improve operational and engineering decisions broadly by identifying and taking advantage of opportunities to reduce risk, and not just to eliminate requirements the licensee sees as undesirable. For those cases when risk increases are proposed, the benefits have been described and these benefits are commensurate with the proposed risk increases. The approach used to identify reduced requirements was also used to identify if there are areas where requirements should be increased. * The scope and quality of the engineering analyses (including traditional and probabilistic analyses) conducted to justify the proposed LB