Document: NUREG-0800
Document ID: 3e1b34e6-0e9d-4d8f-9338-98860adfc499
Document Type: srp
Title: CONCRETE CONTAINMENT
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070570009.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.8.1
CFR Part: 
CFR Title: 

Content:
ty that these events would damage the containment and cause release of radioactive material. 4. Compliance with GDC 16 requires that reactor containment and associated systems be provided to establish an essentially leak-tight barrier against uncontrolled release of radioactivity to the environment and to ensure that design conditions important to safety are not exceeded for as long as required for postulated accident conditions. Reinforced and prestressed concrete containments are designed, constructed, and tested in accordance with ASME Code, Section III, Division 2, Subsection CC, to provide a leak-tight barrier. A typical concrete containment consists of a thick-walled reinforced concrete cylinder and roof dome, with or without prestressing tendons. A steel liner is attached to the inside surface to provide the leak-tight barrier. The liner plate is thickened around penetrations to compensate for the openings. Steel closure heads and penetrations (e.g., personnel locks, equipment hatches, and mechanical and electrical penetrations) are designed in accordance with ASME Code, Section III, Division 1, Subsection NE. Seals provided at the penetrations must be designed to maintain containment integrity for design-basis accident conditions, including pressure, temperature, and radiation. Leak-tightness of the containment structure must be tested at regular intervals during the life of the plant in accordance with the provisions of Appendix J to 10 CFR Part 50, as described in SRP Section 6.2.6. SRP Section 3.8.1 provides guidance related to methods, including load combinations, acceptance criteria, standards, and codes, to ensure compliance with GDC 16. Meeting these requirements and criteria provide assurance that an uncontrolled release of radioactivity to the environment will be prevented and that the design conditions of the reactor coolant pressure boundary will be maintained for as long as required. 5. Compliance with GDC 50 requires that the reactor containment