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
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satisfy the requirements of 10 CFR 52.47(8) or 10 CFR 52.79(a)(17), for a DC or a COL application, respectively. In particular, both regulations invoke 10 CFR 50.34(f)(1)(i) to specify that a design- specific or plant-specific PRA should be performed to seek improvements in core heat removal system reliability and containment heat removal system reliability that are significant and practical and do not excessively impact the plant. 3. The reviewer compares the design features that affect containment performance and the calculated performance of the containment with published results for operating plants and evaluates whether or not the design under review is robust and has a high tolerance for severe accidents when compared to that of the operating plants. The comparison and conclusions are documented in the safety evaluation report. 4. The reviewer identifies the design features and requirements introduced by the applicant to reduce or eliminate significant contributors to risk in existing operating plants and evaluates the extent to which these features provide a good balance between prevention and mitigation. The evaluation is documented in the safety evaluation report. IV. EVALUATION FINDINGS The reviewer verifies that the applicant has provided sufficient information and that the review and calculations (if applicable) support conclusions of the following type to be included in the staff’s SER. The reviewer also states the bases for those conclusions. In the SER, the staff should provide a summary description of the applicant’s design-specific or plant-specific PRA and severe accident evaluations, following the topical outline provided in RG 1.206, Section C.I.19. The SER should also identify the PRA and severe accident evaluation information that the applicant docketed and the information reviewed by the NRC during audits. The results of the staff review, including staff audits, should reflect a consistent and scrutable evaluation of the applicant’s PRA