Document: NUREG-0800
Document ID: ac43f632-9db1-4857-9f56-bfba45965456
Document Type: srp
Title: * These are modifications to a plant’s design, operations, or other activities that require NRC approval. These modifica
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0232/ML023250195.pdf
Revision Date: 2023-06
Chapter: 19
Section ID: 19
CFR Part: 
CFR Title: 

Content:
Review support includes assessing the adequacy of the scope, level of detail, and quality of the PRA used by the licensee to support the regulatory change, as well as applying risk-related acceptance guidelines to support decisionmaking. • The Reactor Systems Branch (SRXB) assists the primary review branch or SPSB (upon request) by providing support for accident sequence modeling, including treatment of reactivity and thermal-hydraulic phenomena, system response, and the implementation of emergency and abnormal operating procedures. • The Operator Licensing, Human Performance and Plant Support Branch (IOLB) holds the primary responsibility for reviewing evaluations of radionuclide contamination or public health effects submitted by a licensee in support of a request for regulatory action. • The Office of Nuclear Regulatory Research (RES) assists the primary review branch (upon request) by providing technical support in areas involving all aspects of PRA, severe accident phenomenology, and engineering studies. • The Regional Offices assist the primary review branch (upon request) by providing information on licensees' operational experience in areas of system performance, operator performance, risk management practices, and management controls. I. AREAS OF REVIEW The NRC's PRA Implementation Plan as proposed in Reference 3, now replaced by the Risk- Informed Regulation Implementation Plan (see Ref. 6), identifies a wide scope of regulatory SRP 19-3 activities for which PRA provides valuable insights. This scope includes activities that require NRC review and approval, as well as other activities that are considered internal to the NRC and affect licensees and applicants in a less direct manner (e.g., generic issue prioritization). This SRP chapter solely concerns licensing amendment requests submitted for NRC review and approval for which PRA can play an effective role in the decisionmaking process. General review guidance for applicable activities is