Document: NUREG-0800
Document ID: 048d2078-58a2-440a-a58f-f456e6c8dec8
Document Type: srp
Title: CONTAINMENT LEAKAGE TESTING
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340706.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.2.6
CFR Part: 
CFR Title: 

Content:
ted during the CILRT are restored to their operable status following the test. Appendix J in Section III.A.1(d) addresses the opening of systems for the con- tainment integrated leak rate test if they are open to the containment atmosphere under post-accident conditions and become an extension of the boundary of the containment. In this regard, leak testing of hydrogen recombiner systems located outside containment should be included in the local leak rate test program. A local leak test should be done at the time of the CURT and the measured leak rate added to the CILRT result. Alternately, the recombiner system may be open to the containment atmosphere during the performance of the CILRT. All leakage tests, performed by either pneumatic or hydrostatic means, should the capability to quantify the leakage rates either explicitly or by a conser- vative bounding method to satisfy test acceptance criteria in Appendix J. Appendix J in Section III.C.1 prescribes methods for conducting the containment isolation valve leak rate tests. At the construction permit (CP) stage, the applicant should identify all containment isolation valves that will be locally (Type C) leak tested with the test pressure applied in a direction opposite to that which would occur under accident conditions, and commit to justify at the OL stage, that such testing will result in equivalent or more conservative results. With regard to the application of Section III.C.1 of Appendix J for leak testing of main steam isolation valves in boiling water reactor plants, a test pressure of less than P and the test acceptance criteria should be justified and included in the plant Technical Specifications. Hydrostatic testing of containment isolation valves is permissible if the line is not a potential containment atmosphere leak path, and may be found acceptable 6.2.6-3 Rev. 2 - July 1981 if it can be demonstrated in accordance with the requirements of Section III.C of Appendix J, that a liquid inventory is