Document: NUREG-0800
Document ID: 817bb0ad-6fd7-433e-aa2b-b4b3e1166f9c
Document Type: srp
Title: PROBABILISTIC RISK ASSESSMENT AND SEVERE ACCIDENT EVALUATION FOR
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0717/ML071700652.pdf
Revision Date: 2023-06
Chapter: 19
Section ID: 19.0
CFR Part: 
CFR Title: 

Content:
NEW REACTORS REVIEW RESPONSIBILITIES Primary - Organization responsible for the review of the applicant’s probabilistic risk assessment (PRA) Organization responsible for the review of severe accident design features Secondary - Technical organizations identified in the Review Interface section of this SRP may be consulted, as needed I. AREAS OF REVIEW This SRP section pertains to the staff review of the design-specific PRA for a design certification (DC) and plant-specific PRA for a combined license (COL) application, respectively. This SRP section also pertains to the staff review of the applicant’s deterministic evaluation of design features for the prevention or mitigation of severe accidents. Subsequent to COL issuance, the staff may review the applicant's PRA (or portions thereof) in the context of licensing actions, following the guidance provided in Regulatory Guides 1.174 and 1.200, SRP sections 19.1 and 19.2 (previously SRP Chapter 19), and associated application-specific regulatory guidance and SRP sections, while continuing to address and maintain the validity of the staff findings associated with the PRA and severe accident related licensing basis. 1 The reference to existing operating plants applies to light-water reactor (LWR) plant technology contemporary with the issuance of the Commission’s Severe Reactor Accident Policy Statement on August 8, 1985. 19.0-2 Revision 2 - June 2007 The scope of a DC review is limited to the design-specific aspects within the scope of the certification. The design-specific PRA developed during the DC stage may not identify site- specific information (e.g., seismic hazards, switchyard and offsite grid configuration) and may not explicitly model all aspects of the design (e.g., balance of plant). Therefore, the applicant’s design-specific PRA may include assumptions regarding site parameters and the interfaces with undeveloped aspects of the design. This is acceptable at the DC stage and results in the