Document: NUREG-0800
Document ID: ab4f353d-c299-479d-ab25-834f97196988
Document Type: srp
Title: CONCRETE AND STEEL INTERNAL STRUCTURES OF STEEL OR CONCRETE
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070326.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.8.3
CFR Part: 
CFR Title: 

Content:
should limit the 7 movement of the vessel to within allowable limits under the applicable combinations of loadings. The support 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 reactor vessel supports are reviewed with emphasis on methods of transferring loads from the vessel to the support and eventually to the structure and its foundations. ii. Concrete Supports for Steam Generator Steam generators should be supported and restrained to resist normal operating loads, seismic loads, and loads induced 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. 3.8.3-3 DRAFT Rev. 2 - April 1996 iv. Secondary Shield Walls The secondary shield walls surround the primary loops, forming the steam generator compartments, and protecting the containment from the effects 8 of pipe rupture accidents inside the compartment. They may also support intermediate floors and the operating floor. The general arrangement and principal features of these walls