Document: NRC Regulatory Guide
Document ID: 4774af39-208c-4761-97e8-2d66c6d14794
Document Type: regulatory_guide
Title: Performance-Based Containment Leak-Test Program (Rev. 1)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2200/ML22006A317.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.163
CFR Part: 
CFR Title: 

Content:
.......................................... 8 D. IMPLEMENTATION ........................................................................................................................... 11 REFERENCES ........................................................................................................................................... 12 DG-1391, Page 4 B. DISCUSSION Reason for Revision This revision of the guide (Revision 1) endorses the guidance in NEI 94-01, Revision 3-A, issued July 2012 (Ref. 5), for implementing Option B of Appendix J to 10 CFR Part 50, subject to the regulatory positions listed in Section C of this RG. This guidance includes (1) extending Type A test intervals up to 15 years and (2) extending Type C test intervals up to 75 months. This RG endorses Electric Power Research Institute (EPRI) Report No. 1009325, “Risk Impact Assessment of Extended Integrated Leak Rate Testing Intervals,” Revision 2-A, subject to the applicable regulatory positions listed in Section C of this RG. EPRI Report No. 1009325, Revision 2-A provides a generic assessment of the risks associated with a permanent extension of the integrated leakage rate test (ILRT) surveillance interval to 15 years, and a risk-informed methodology/template to be used to confirm the risk impact of the ILRT extension on a plant-specific basis. This revision also endorses American National Standards Institute (ANSI)/American Nuclear Society (ANS) 56.8-2020, “Containment System Leakage Testing Requirements” (Ref. 6), for acceptable industry standards on technical methods and techniques for performing Type A, B, and C tests. The staff has reviewed ANSI/ANS 56.8-2020 and found it to be technically consistent with the 2002 edition. Error! Reference source not found.Error! Reference source not found. Licensees wishing to implement the methods, procedures, or analyses in this RG, will need to submit a license amendment request (LAR) to amend the Technical Specifications to reflect