Document: NUREG-0800
Document ID: dd4f84a9-8976-44c4-b631-d7c0254f4efc
Document Type: srp
Title: PROBABILISTIC RISK ASSESSMENT AND SEVERE ACCIDENT EVALUATION FOR
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1416/ML14161A594.pdf
Revision Date: 2023-06
Chapter: 19
Section ID: 19.0
CFR Part: 
CFR Title: 

Content:
Interim Staff Guidance (ISG) DC/COL-ISG-003 (ADAMS Accession No. ML081430087) concerning the review of PRA information and severe accident assessments submitted to support DC and COL applications, (2) incorporation of guidance previously contained in ISG DC/COL-ISG-020 (ADAMS Accession No. ML100491233) concerning review of information from PRA-based seismic margin analyses submitted in support of DC and COL applications, (3) incorporation of guidance previously contained in ISG DI&C/COL-ISG-003 (ADAMS Accession No. ML080570048) concerning review of DI&C system PRAs, including treatment of CCFs in PRAs and uncertainty analysis associated with new reactor digital systems, (4) incorporation of additional procedures for review of PRA information and severe accident assessments developed during NRC reviews of DC and COL applications completed after Revision 2 of SRP 19.0 was issued, (5) additional proposed acceptance criteria and review procedures for the staff’s review of an applicant’s assessment of risk from accidents that could affect multiple modules in facilities with small modular integral pressurized water reactors (iPWRs), and (6) additional review procedures for the staff’s review of the results of the PRA for non-power modes of operation. A description of the technical changes in each SRP section are as follows: I. AREAS OF REVIEW 1. The list of the Commission’s objectives regarding the appropriate way to address severe accidents and use PRA in the design and operation of facilities under review was removed. RG 1.206 is identified as the proper source for the list. 2. Added a statement describing the scope of newly added guidance for the review of PRA-based seismic margin analysis. 3. Added a statement clarifying the various types of information from COL applicants the staff may expect to see when the applicant incorporates by reference a generic risk assessment of external events in the DCD. 4. Added statements identifying the information that should