Document: NUREG-0800
Document ID: 6de5c1bb-88d0-4d17-8255-a248a8db304a
Document Type: srp
Title: SUBCOMPARTMENT ANALYSIS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070487.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.2.1.2
CFR Part: 
CFR Title: 

Content:
pplications are contained in the referenced SRP sections of the corresponding primary branchidentified as the primary review responsibility of those branches. 15 II. ACCEPTANCE CRITERIA The acceptance criteria given below apply to the design and functional capability of subcompartments in the primary containment. SCSB accepts the containment design of 16 subcompartments if the relevant requirements of General Design Criteria 4 and 50 are complied with. The relevant requirements are as follows: A. General Design Criterion 4, as it relates to the environmental and missile protection provided to assure that structures, systems and components important to safety arebe17 designed to accommodate the dynamic effects (e.g., effects of missiles, pipe whipping, and discharging fluids that may result from equipment failures) that may occur during plant normal operations or during an accident. 6.2.1.2-3 DRAFT Rev. 3 - April 1996 B. General Design Criterion 50, as it relates to the subcompartments being designed with sufficient margin to prevent fracture of the structure due to pressure differential across the walls of the subcompartment. In meeting the requirements of GDC 50, the following specific criterion or criteria that pertain to the design and functional capability of containment subcompartments are used as indicated below: 1. The initial atmospheric conditions within a subcompartment should be selected to maximize the resultant differential pressure. An acceptable model would be to assume air at the maximum allowable temperature, minimum absolute pressure, and zero percent relative humidity. If the assumed initial atmospheric conditions differ from these, the selected values should be justified. Another model that is also acceptable, for a restricted class of subcompartments, involves simplifying the air model outlined above. For this model, the initial atmosphere within the subcompartment is modeled as a homogeneous water-steam mixture with an average density