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:
e modes may be unlikely to occur, • A qualitative engineering discussion on how such failure modes could be detected in a timely fashion, • A discussion on what other requirements may be useful to control such failure rate increases, • A qualitative engineering discussion on why relaxing the requirements may have minimal impact on the failure rate increase. c. Evaluation Findings The SER should incorporate language equivalent to the following, and exceptions (if any) should be noted and explained: • The categorization of the SSCs or human actions has adequately captured their significance to safety, and this categorization has been performed in such a way that the potential impact of the proposed application results in, at most, a small increase in the risk to the health and safety of the public. The input to the integrated decisionmaking process derived from importance measures has been utilized, taking into account the known limitations of importance calculations, and the results have been supplemented by appropriate qualitative considerations. • The integrated decisionmaking process explicitly recognized systems invoked in plant response to initiating events and ensured that components within these systems are considered for programmatic attention in areas (IST, ISI, etc.) appropriate to their performance characteristics and the level of performance needed from them. SRP 19-D1 APPENDIX D USE OF RISK INFORMATION IN REVIEW OF NON-RISK-INFORMED LICENSE AMENDMENT REQUESTS Areas of Review When a license amendment request complies with the regulations and other license requirements, there is a presumption by the Commission of adequate protection of public health and safety (Maine Yankee, ALAB-161, 6 AEC 1003 (1973)). However, circumstances may arise in which new information reveals an unforeseen hazard or a substantially greater potential for a known hazard to occur, such as identification of an issue that substantially increases risk. In such situations, the