Document: NUREG-0800
Document ID: 9c7116dd-39cd-47a9-b121-dce6f51adc77
Document Type: srp
Title: SUBCOMPARTMENT ANALYSIS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0706/ML070620009.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.2.1.2
CFR Part: 
CFR Title: 

Content:
continue to require consideration of the global effects of postulated pipe ruptures for the design of subcompartment enclosures because the global effects provide a convenient and conservative design envelope. Containment subcompartments contain high-energy piping that, if ruptured, could cause collapse of the subcompartment, generation of missiles, and creation of harsh local environmental conditions. Meeting the requirements of GDC 4 will help to maintain the structural integrity of containment subcompartments and protect the containment structure and systems from the effects of a high-energy line break. 2. GDC 50 requires that the containment structure and associated heat removal system be designed to accommodate, without exceeding the design leakage rate and with 6.2.1.2-6 Revision 3 - March 2007 sufficient margin, the calculated pressure and temperature conditions resulting from a loss of coolant accident. Because a loss-of-coolant accident is the most severe challenge expected, the design of the containment and its subcompartments must be able to withstand such an accident. Providing sufficient design margin will assure that the design can withstand all postulated accidents regardless of unanticipated factors. Meeting the requirements of GDC 50 will help to maintain the structural integrity of containment subcompartments and protect the containment structure and systems from the effects of a subcompartment high-energy line break. III. REVIEW PROCEDURES The reviewer will select material from the procedures described below, as may be appropriate for a particular case. These review procedures are based on the identified SRP acceptance criteria. For deviations from these acceptance criteria, the staff should review the applicant’s evaluation of how the proposed alternatives provide an acceptable method of complying with the relevant NRC requirements identified in Subsection II. 1. Nodalization Schemes. The reviewer evaluates the nodalization of each