Document: NUREG-0800
Document ID: a09b1666-b289-4ea9-9e8f-3ee5fbd5bf41
Document Type: srp
Title: CONCRETE AND STEEL INTERNAL STRUCTURES OF STEEL OR
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1319/ML13198A250.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.8.3
CFR Part: 
CFR Title: 

Content:
he PWR vessel should be supported and restrained to resist normal operating loads, seismic loads, and loads induced by postulated pipe rupture, including LOCAs. The support and restraint system should restrain the movement of the vessel to within allowable limits under the applicable load combinations. However, the support system should minimize resistance to the thermal movements expected during operation. With these functional requirements in mind, the review evaluates the general arrangement and principal features of the reactor vessel supports, with an emphasis on the methods of transferring loads from the vessel to the support and ultimately 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 from a postulated rupture in steam or feedwater pipes and vice versa. However, the system should minimize resistance to the thermal movements expected during operation. With these functional requirements in mind, the review evaluates the general arrangement and principal features of the steam generator supports, with an emphasis on the methods of transferring loads from the steam generator to the support and eventually to the structure and its foundations. 3.8.3-3 Revision 4 – September 2013 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 often a thick wall that surrounds the reactor vessel and may be anchored through the liner plate to the containment base slab. The review evaluates the general arrangement and principal features of the wall and cavity, including the reinforcement and anchorage system. iv. Secondary Shield Walls The secondary shield walls surrounding the primary loops form the steam generator compartments and