Document: NUREG-0800
Document ID: 8dd882f4-a34f-4415-acd1-ebb441c72786
Document Type: srp
Title: PROBABILISTIC RISK ASSESSMENT AND SEVERE ACCIDENT
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1213/ML12132A481.pdf
Revision Date: 2023-06
Chapter: 19
Section ID: 19.0
CFR Part: 
CFR Title: 

Content:
7, states that PRAs required under 10 CFR Part 52 should use NRC- endorsed consensus standards to the extent practicable. Acceptance Criteria Based on these guidance documents and the major objectives stated in Subsection I, the staff has established the following acceptance criteria for its review. These acceptance criteria apply to the PRA and severe accident evaluation in general. Specific subsets of the criteria apply to individual elements of the applicant’s analyses (e.g., Level 1 shutdown PRA, severe accident management). 1. The staff will determine that the applicant has used the PRA to do the following: A. Identify and address potential design features and plant operational vulnerabilities; for example, vulnerabilities in which a small number of failures could lead to core damage, containment failure, or large releases that could drive plant risk to unacceptable levels with respect to the Commission’s goals B. Reduce or eliminate the significant risk contributors of existing operating plants applicable to the new design by introducing appropriate features and requirements C. Select among alternative features, operational strategies, and design options 2. The staff will determine that the applicant has adequately demonstrated that: A. The risk associated with the design compares favorably against the Commission’s goals of less than 1×10-4 per year (/yr) for CDF and less than 1×10-6/yr for LRF. B. The design compares favorably against the Commission’s approved use of a CPG, which includes (1) a deterministic goal that containment integrity be 19.0-12 Draft Revision 3 – September 2012 maintained for approximately 24 hours following the onset of core damage for the more likely severe accident challenges and (2) a probabilistic goal that the conditional containment failure probability be less than 0.1 for the composite of all core-damage sequences assessed in the PRA. 3. The staff will determine that the applicant has adequately demonstrated that the