Document: NUREG-0800
Document ID: c23d52ec-d83f-4468-b35e-e8c97fdf2f09
Document Type: srp
Title: CONTAINMENT ISOLATION SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070461.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.2.4
CFR Part: 
CFR Title: 

Content:
riers. 4. The design criteria applied to isolation barriers and piping. 5. The provisions for detecting a possible need to isolate remote-manual- controlled systems, such as engineered safety features systems. 6. The design provisions for and technical specifications pertaining to operability and leakage rate testing of the isolation barriers. 7. The calculation of containment atmosphere released prior to isolation valve closure for lines that provide a direct path to the environs. 8. The containment purging/venting design features provided to minimize purging time consistent with ALARA principles for occupational exposure.4 9. The reliability of the purge system to isolate under accident conditions.5 10. The containment isolation and valve indication provisions in the event of a station blackout (SBO).6 Review Interfaces7 CSBSCSB will coordinate other branch evaluations that interface with the overall review of the 8 containment isolation system, as follows: A. The Mechanical Engineering Branch (MEB)(EMEB) will review the system seismic 9 10 design and quality group classification as part of its primary review responsibility for SRP Sections 3.2.1 and 3.2.2, respectively. 6.2.4-3 DRAFT Rev. 3 - April 1996 MEBEMEB will review the mechanical design of the containment isolation system as 11 part of its primary review responsibility for SRP Section 3.9 to ensure adequate protection against a breach of integrity, missiles, pipe whip, and jet impingement. EMEB will review the postulated pipe rupture locations, the containment penetration exclusion area, and related dynamic effects on containment isolation capability as part of its primary review responsibility for SRP Section 3.6.2. 12 MEBEMEB will evaluate the qualification test program for electric valve operators and 13 the operability assurance program for containment isolationpurge and vent valves as 14 part of its primary review responsibility for SRP Section 3.10. B. The Structural Engineering Branch (SEB)Civil