Document: NUREG-0800
Document ID: bc3e4db6-5bf3-4ccc-95dd-955e48799612
Document Type: srp
Title: CONTAINMENT LEAKAGE TESTING
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0706/ML070620007.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.2.6
CFR Part: 
CFR Title: 

Content:
that are locally leakage rate tested, and also isolated during CILRTs, should be added to the CILRT result. Provisions should be made to ensure that instrumentation lines isolated during the CILRT are restored to their operable status following the test. All leakage rate tests, performed by either pneumatic or hydrostatic means, should have the capability to quantify the leakage rates either explicitly or by a conservative bounding method to satisfy test acceptance criteria in Appendix J and the Technical Specifications. Appendix J, Option A, Section III.C.1, prescribes methods for conducting the containment isolation valve leakage rate tests. Under Option B, RG 1.163 endorses NEI 94-01, Rev. 0 (with certain exceptions), which provides similar guidance in Sections 8.0 and 10.0. At the construction permit (CP) or standard design certification stage, the applicant should identify all containment isolation valves that will be locally (Type C) leakage rate tested with the test pressure applied in a direction opposite to that which would occur under accident conditions and should commit to justify, at the OL or COL stage, that such testing will result in equivalent or more conservative results. With regard to the application of Appendix J, Option A, Section III.C.1, and Option B, Section III.B., for leakage rate testing of main steam isolation valves (MSIVs) in boiling water reactor (BWR) plants, if a test pressure of less than Pa (calculated peak containment accident pressure) is necessary, the test pressure and the test acceptance criteria should be justified and included in the plant Technical Specifications. Further, this will require an exemption from the applicable Appendix J requirement and the applicant or licensee must request one, with appropriate justification. In addition, it is typical for BWR applicants or licensees to request that MSIV local leakage rates be excluded from the Type A test leakage rate and the sum of Type B and Type C leakage rates, which