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 and synergistic effects on risk from the present and previous applications have been addressed. Licensee risk-management practices are being followed to minimize the risk from plant operations.  An appropriate consideration of uncertainties is provided in support of the proposed application. The licensee showed that even taking into account the uncertainties in the analysis, the evaluation of the change in risk was robust in that there can be confidence in the conclusions drawn with respect to the nature of the change compared with the acceptance guidelines. This argument was supported either by SRP 19-37 explicit propagation or by a qualitative and/or sensitivity analysis showing that no event contributing to the change in risk is subject to significant uncertainty. • If the risk-informed application is based on a qualitative assessment of the change to risk, the application is shown to result in a decrease in plant risk, or is risk neutral, or CDF and LERF increases are shown to be acceptable on the basis of bounding evaluations or sensitivity studies. IV.8 Integrated Decisionmaking Process • Results from traditional engineering analyses and risk analyses have been used to ensure that the principles for risk-informed decisionmaking have been met. • Potential analysis limitations, uncertainties, and conflicts are resolved by use of conservative results, or by use of appropriate implementation and monitoring strategies, or by use of appropriate compensatory measures. • The integrated decisionmaking process is well-defined, systematic, repeatable, and scrutable. • The scope of implementation of the change is appropriate for, and commensurate with, the level of confidence in the results of the analysis. IV.9 Implementation and Monitoring Strategies • The implementation process is commensurate with the uncertainty associated with the results of the traditional and probabilistic engineering evaluations. • A monitoring program that could adequately track