Document: NUREG-0800
Document ID: 632e6c59-03bd-4648-b0b3-e8b2efd6fa04
Document Type: srp
Title: CONTAINMENT ISOLATION SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0703/ML070380197.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.2.4
CFR Part: 
CFR Title: 

Content:
associated systems, establishing an essentially leak-tight barrier against the uncontrolled release of radioactivity to the environment. 5. GDC 54, as it relates to the requirement that piping systems penetrating the containment be provided with leak detection, isolation, and containment capabilities having redundancy, reliability, and performance capabilities which reflect the importance to safety, and as it relates to designing such piping systems with a capability to periodically test the operability of the isolation valves and associated apparatus and to determine if valve leakage is within acceptable limits. 6. GDCs 55 and 56, as to isolation valves for lines penetrating (GDC 55) the primary containment boundary as parts of the reactor coolant pressure boundary or as direct connections to the containment atmosphere (GDC 56) as follows: A. One locked-closed isolation valve1 inside and one outside containment; or B. One automatic isolation valve inside and one locked-closed isolation valve outside containment; or C. One locked-closed isolation valve inside and one automatic isolation valve2 outside containment; or D. One automatic isolation valve inside and one outside2 containment. 6.2.4-5 Revision 3 - March 2007 7. GDC 57, as it relates to the requirement that lines penetrating the primary containment boundary and neither part of the reactor coolant pressure boundary nor connected directly to the containment atmosphere have at least one locked-closed, remote-manual, or automatic isolation valve2 outside containment. 8. 10 CFR 52.47(b)(1), which requires that a DC application contain the proposed inspections, tests, analyses, and acceptance criteria (ITAAC) that are necessary and sufficient to provide reasonable assurance that, if the inspections, tests, and analyses are performed and the acceptance criteria met, a plant that incorporates the design certification is built and will operate in accordance with the design certification, the provisions of the Atomic