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:
-2 Rev. 2 - July 1981 primary reactor containment, is such an engineered safety feature, whose effec- tiveness must be periodically verified as required by Appendix J in Section IV.B. In so doing, the leakage limit of the secondary containment is acceptable if it is based on the limit used in the analysis of the secondary containment depres- surization time. The test should be conducted at each refueling or at intervals not exceeding 18 months. The test limit should be consistent with the limit used for direct leakage in the analysis of the radiological consequences by Accident Evaluation Branch (AEB). Potential bypass leak paths (identified in accordance with Branch Technical Position CSB 6-3, "Determination of Bypass Leakage Paths in Dual Containment Plants") should be locally leak tested in accordance with the requirements of Appendix J. Appendix J in Section III.A.1 (a) requires that no adjutments be made to the containment prior to the performance of the containment integrated leak rate test (CILRT) so that the containment can be tested in a close to the "as is" condition as practical. Instrumentation lines that penetrate containment, however, are sometimes isolated for the CILRT. To assure that they are included in the test, the following should be done. Leak testing of instrumentation lines that penetrate containment may be done in conjunction with either the local leak rate tests or the containment integrated leak rate test. Instrumen- tation lines that are not locally leak tested should not be isolated from the containment atmosphere during the performance of the CILRT. The measured leak- age rates from instrumentation lines that are locally leak tested should be added to the CILRT result. Provisions should be made to assure that instrumen- tation lines isolated 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