Document: NUREG-0800
Document ID: b8d2b8f5-432a-4c0a-81ab-20231f7d0f28
Document Type: srp
Title: PROBABILISTIC RISK ASSESSMENT AND SEVERE ACCIDENT EVALUATION FOR
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1508/ML15089A068.pdf
Revision Date: 2023-06
Chapter: 19
Section ID: 19.0
CFR Part: 
CFR Title: 

Content:
st and has a high tolerance for severe accidents when compared to that of the operating plants. The comparison and conclusions are documented in the SER. 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 SER. 5. Using acceptance criteria listed above in Section II, the reviewer evaluates the applicants assessment of structural performance of the containment under severe accident loads which encompasses: (1) an assessment of the Level C (or factored load) pressure capability of the containment in accordance with 10 CFR 50.44(c)(5), (2) demonstration of the containment capability to withstand the pressure and temperature loads induced by the more likely severe accident scenarios as stipulated in SECY-93-087, Section I.J, (3) a containment structural fragility assessment for overpressurization, and (4) seismic HCLPF assessment of the containment in meeting the SECY-93-087, Section II.N, expectation. 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 and severe