Document: NUREG-0800
Document ID: 4e1d86bd-74a5-4678-8bc0-ffce3ba28ea0
Document Type: srp
Title: RISK-INFORMED INSERVICE TESTING
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0428/ML042880272.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.9.7
CFR Part: 
CFR Title: 

Content:
rategy. The reviewer should verify that the licensee's RI-IST program identifies and tests components categorized HSSC that are not in the licensee's current IST program commensurate with their safety significance or that the licensee has demonstrated that a suitable search for such components was conducted. These components should be tested in accordance with the ASME Code where practical, including compliance with all administrative requirements. When ASME Section Xl or OM Code testing is not practical, the licensee should have proposed alternate test methods to ensure operational readiness and to detect component degradation (i.e., degradation associated with failure modes identified as being important in the licensee's PRA). NRC should review and approve these alternate test strategies before implementation of the RI-IST program at the plant. The reviewer should verify that the licensee assessed the appropriateness of relief for components categorized as HSSC that were the subject of a previous NRC-approved relief request (or an NRC-authorized alternative test) in light of the safety significance of the component. The reviewer should verify that the licensee has made a commitment to exercise or operate IST components (except for certain check valves and relief valves) at least once every refueling cycle if practical. 4. Relief Requests and Technical Specification Amendments For components categorized as HSSC or LSSC not tested in accordance with the code test method requirements or NRC-endorsed Code Case, specific relief would be required from the applicable code requirements. Relief would also be required from the code test frequency requirements for components of high safety significance not tested at the code-required frequency. Relief is not required to adjust the test interval of individual LSSC provided it conforms with the process reviewed and approved by the NRC staff or conforms with the process described in an NRC-endorsed ASME Code Case. * The