Document: NUREG-0800
Document ID: b172ba61-9651-45f8-ac8e-6d6e00e27060
Document Type: srp
Title: STEEL CONTAINMENT
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1006/ML100630179.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.8.2
CFR Part: 
CFR Title: 

Content:
vision 1, Subsection NE, provides acceptable stress and deformation limits for evaluating the effects of natural phenomena, in combination with normal and accident conditions. Meeting this requirement provides assurance that steel containment structures will be designed to withstand the effects of natural phenomena without loss of capability to perform their intended function. 3.8.2-21 Revision 3 - May 2010 3. Compliance with GDC 4 requires that nuclear power plant SSCs important to safety be designed to accommodate the effects of and be compatible with environmental conditions associated with normal operation, maintenance, testing, and postulated accidents, including LOCAs. It also requires that they be appropriately protected against dynamic effects, including the effects of missiles, pipe whipping, and discharging fluids, that may result from equipment failures and from events and conditions outside the nuclear power unit. SRP Section 3.8.2 provides methods, including load combinations, acceptance criteria, standards, and codes, to ensure compliance with GDC 4. 4. Compliance with GDC 16 requires that reactor containment and associated systems be provided to establish an essentially leaktight barrier against the 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. Steel containments are designed, constructed, and tested in accordance with ASME Code, Section III, Division 1, Subsection NE, to provide a leaktight barrier. A typical steel containment consists of a thin-walled steel cylinder and top closure head. The wall thickness is increased around penetrations to compensate for the openings. Penetrations (e.g., personnel locks, equipment hatches, and mechanical and electrical penetrations) are also designed in accordance with ASME Code, Section III, Division 1, Subsection NE. Seals provided at the penetrations must be designed