Document: NRC Regulatory Guide
Document ID: 15b07a3e-3a95-46db-9b8c-a862a8e4b7bc
Document Type: regulatory_guide
Title: "Guidance for ITAAC Closure Under 10 CFR Part 52." (Rev. 2)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1425/ML14258B182.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.215
CFR Part: 
CFR Title: 

Content:
Washington, DC. 14. NRC Inspection Manual Chapter 2514, “Light Water Reactor Inspection Program – Startup Testing Phase” Washington, DC. Appendix A to DG-1316, Page A-1 APPENDIX A ENCLOSURE 1 TO SECY--10-0100, “INSPECTIONS, TESTS, ANALYSES, AND ACCEPTANCE CRITERIA MAINTENANCE THRESHOLDS AND ASSOCIATED LICENSE AMENDMENTS” Enclosure 1 to SECY-09-0119, “Staff Progress in Resolving Issues Associated with Inspections, Tests, Analyses, and Acceptance Criteria,” dated August 26, 2009, presented four thresholds for identifying when activities would materially alter the determination bases for inspections, tests, analyses, and acceptance criteria (ITAAC). Throughout the past year, the U.S. Nuclear Regulatory Commission staff refined the ITAAC maintenance thresholds after interactions with interested stakeholders during the ITAAC public workshop series. These refinements are intended to optimize the effectiveness of the thresholds and to clearly articulate the criteria for reporting. Each item below is an updated version of the thresholds proposed in Enclosure 1 to SECY-09-0119. Following each threshold is a discussion on license amendments that would be necessary beyond the envelope of the threshold. These discussions describe scenarios that pertain to the threshold and state when a license amendment would be necessary. Threshold 1: Postwork Verification Will the postwork verification (PWV) use a significantly different approach than the original performance of the inspection, test, or analysis (ITA) as described in the original ITAAC notification? Threshold 1 involves situations in which the occurrence of an event could call into question whether a licensee continues to meet an acceptance criterion (AC). Such situations could involve many types of maintenance activities, including component replacement. After work is complete, a PWV will be used to confirm that the licensee still meets the AC. The PWV is not a performance of the ITA because the licensee has