Document: NUREG-0800
Document ID: 808cea66-69b8-4f91-9fb2-62b3b99bc87a
Document Type: srp
Title: NUREG-0800
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340579.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3
CFR Part: 
CFR Title: 

Content:
uced by pipe rupture. The support system should prevent the rupture of the primary coolant pipes due to a postulated rupture in steam or feed water pipes and vice versa. The system should nevertheless minimize resistance to the thermal movements expected during operation. With these functional requirements in mind, the general arrangement and principal features of the steam generator supports are reviewed with emphasis on methods of transferring loads from the vessel to the support and eventually to the structure and its foundations. iii. Primary Shield Wall and Reactor Cavity The primary shield wall forms the reactor cavity and usually supports and restrains the reactor vessel. It is usually a thick wall that surrounds the reactor vessel and may be anchored through the liner plate to the containment base slab. The general arrangement and principal features of the wall and cavity are reviewed including the main reinforcement and anchorage system. iv. Secondary Shield Walls The secondary shield walls surround the primary loops, forming the steam generator compartments, and protecting the contain- ment from the effects of pipe rupture accidents inside the compartment. They may also support intermediate floors and the operating floor. The general arrangement and principal fea- tures of these walls are reviewed with emphasis on the method of structural framing and expected behavior under compartment 3.8.3-2 Rev. 1 - July 1981 pressure loads and jet forces, particularly those associated with the LOCA. v. Other Interior Structures The other major interior structures of PWR dry containments that are reviewed in a similar manner are the concrete refueling pool walls, the operating floor, other intermediate floors, and the polar crane supporting elements. b. For PWR Ice-condenser Containment Internal Structures For PWR plants where the ice-condenser containment system is utilized, in addition to the applicable structures reviewed in dry PWR containments, the following