Document: NUREG-0800
Document ID: c53cf2ef-5eb4-4449-bed4-17a9eff508e3
Document Type: srp
Title: SECONDARY CONTAINMENT FUNCTIONAL DESIGN
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0636/ML063600406.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.2.3
CFR Part: 
CFR Title: 

Content:
REVIEW RESPONSIBILITIES Primary - Organization responsible for review of containment integrity Secondary - None I. AREAS OF REVIEW The scope of review is the applicant's safety analysis report (SAR) information on the functional capability of the secondary containment system, which includes the outer containment structure of dual containment plants, and systems that mitigate the radiological consequences of postulated accidents. The secondary containment structure and supporting systems collect and process radioactive material that may leak from the primary containment following an accident. The supporting systems maintain a negative pressure within the secondary containment and process this leakage. Review of plant areas and systems contiguous to the secondary containment also collecting and processing radioactive material that may leak from the primary containment following an accident is the same as for the secondary containment. The specific areas of review are as follows: 1. Analyses of the pressure and temperature response of the secondary containment to a loss-of-coolant accident (LOCA) within the primary containment. 6.2.3-2 Revision 3 - March 2007 2. Analyses of the effect of openings in the secondary containment on the capability of the depressurization and filtration system to accomplish its design objective of establishing a negative pressure within a prescribed time. 3. Analyses of the pressure and temperature response of the annular region between the primary and secondary containment to a high-energy line rupture within the secondary containment. 4. The functional design criteria applied to guard pipes surrounding high-energy lines within the secondary containment. 5. Analyses of any primary containment leakage paths that bypass the secondary containment. 6. Design provisions for periodic leakage testing of secondary containment bypass leakage paths. 7. Analyses of the pressure response of the secondary containment to inadvertent depressurization of