Document: NUREG-0800
Document ID: 643ab154-682e-480f-a57b-a5fd7390a34e
Document Type: srp
Title: REVIEW OF TRANSIENT AND ACCIDENT ANALYSIS METHODS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0535/ML053550265.pdf
Revision Date: 2023-06
Chapter: 15
Section ID: 15.0.2
CFR Part: 
CFR Title: 

Content:
tion model. Acceptance may be subject to limitations determined during the review. If the evaluation model is to be accepted, it must be clearly demonstrated that the model is getting the right answer for the right reasons. There must be no evidence of compensating errors or arbitrary code tuning that produces the desired result for a single parameter. Any errors found in the documentation or issues related to the technical adequacy of the model must be addressed through the review process. The review process and the results of communications with the code submitter must also be documented as appropriate in the SER to provide a traceable history of the review process. Restrictions and limitations on use of the evaluation model must be explicitly documented in the SER. The SER must document areas that were reviewed, the method of review, and the findings in each area. The SER must also document areas that were not reviewed and provide the reasons for their omission. The reviewers should determine if the evaluation model was previously reviewed and if the evaluation model previously had restrictions on its use or on the use of certain models in the codes. These previous restrictions must be explicitly addressed in the SER. The current review of the evaluation model may result in the imposition of new restrictions 15.0.2-17 Initial Issuance - December 2005 to be placed on its use. These restrictions must be explicitly identified. The applicant’s documentation must also be revised to reflect these restrictions on use of the code. SER restrictions that have not been explicitly incorporated into evaluation model documentation have been determined to not be legally enforceable. Only statements in the approved description of the evaluation model are legally enforceable. V. IMPLEMENTATION The following is intended to provide guidance to applicants and licensees regarding the NRC staff’s plans for using this SRP section. This SRP section will be used by the staff when