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:
nty bounds should appropriately reflect the level of uncertainty. (Applies to both component- specific and generic data) b. The sources for raw data or generic databases are provided. (Applies to both component-specific and generic data) c. The method used in estimating the parameters is documented, so that the results can be reproduced. (Applies to component specific data) d. If the system being modeled is qualified for its environment but the data obtained are not drawn from systems qualified for that environment, the data should account for the differences in application environments. (Applies to both component-specific and generic data) e. Data for CCF meet the above criteria in Ha to Hd. (Applies to both component-specific and generic data, as appropriate) f. Data for fault coverage meet the above criteria in Ha to Hd. (Applies to both component-specific and generic data, as appropriate) g. Documentation is included on how the basic event probabilities are calculated in terms of failure rates, mission times, and test and maintenance frequencies. (Applies to both component-specific and generic data) I. The use of DI&C systems in nuclear power plants raises the issue of dynamic interactions, specifically: a. The interactions between a plant system and the plant’s physical processes, (i.e., the value of process variables), and b. The interactions within a DI&C system (e.g., communication between different components, multi-tasking, multiplexing, etc.). 19.0-37 Draft Revision 3 –November 2014 The reviewer should confirm that interactions have been addressed in the PRA model for DI&C systems or should evaluate the rationale for not modeling them. J. Target reliability and availability specifications should be described adequately for the operational phase of D-RAP (details of the operational phase are provided in SRP Sections 17.4 and 17.6). If the PRA lacks sufficient quantitative results to determine target values, the applicant should describe adequately how