Document: NUREG-0800
Document ID: 5887ec11-6ad2-46aa-be7f-d596fb3777b6
Document Type: srp
Title: CONCRETE CONTAINMENT
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070324.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.8.1
CFR Part: 
CFR Title: 

Content:
ical concrete containment has a liner plate on the inside face of the containment structure that forms a leaktight barrier. To serve as a leaktight barrier, the liner plate is designed as a Category I structure in accordance with the provisions of the ASME Code, Article CC-3000. Meeting these requirements provides assurance that the containment will perform its intended safety function and that uncontrolled releases of radioactivity to the environment will be prevented. 5. Compliance with GDC 50 requires that the reactor containment structure (including access openings, penetrations, and containment heat removal systems) be designed so that the structure itself and its internal compartments will have the capability to accommodate, without exceeding the design leakage rate and with sufficient margin, the calculated pressure and temperature conditions caused by a LOCA. These requirements apply to this SRP section because the containment structure design is based on the elastic behavior of the material used. That is, when a strength design approach is used, the structure is dimensioned so that (a) the combination of loads multiplied by appropriate load factors will not cause a permanent deformation within the structure and (b) the stress at all points is less than the yield or buckling stress. Design criteria for containment structures are provided in the ASME Code, as supplemented by DRAFT Rev. 2 - April 1996 3.8.1-18 the regulatory guides listed in subsection II.2 of this SRP section. Penetrations are generally analyzed using the finite element method, taking into consideration temperature gradient, cracking of concrete, anchorage of sleeves, and shrinkage and creep. Meeting these requirements provides assurance that the containment structure, the penetrations, and the internal compartments will be able to withstand loads resulting from pressure and temperature conditions and will perform their design safety function. 6. Compliance with 10 CFR 50.34 requires that