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:
Refueling Pool and Operating Floor In the BWR Mark III containments reviewed recently, theThe refueling pool is normally assumed to be continuously filled with water to provide 32 biological shielding above the reactor. The operating floor, which may be supported on the walls of the refueling pool on one side and on the 33 containment shell on the other side, is a combination of reinforced concrete and structural steel. The design and analysis procedures for the refueling pool and the operating floor are of the conventional type and are reviewed accordingly reviewed, with particular emphasis on the 34 structural framing and behavior under loads. In cases where the floor beams are supported vertically on the containment shell, they should be laterally isolated to minimize interaction between the containment and its interior. iv. Concrete Supports for Reactor and Recirculation Pump The design and analysis procedures utilized for the reactor and recirculation pump supports are reviewed in a manner similar to that for PWR reactor and pump supports, as already described in this SRP section. v. Reactor Pedestal The reactor pedestal supports the reactor and has to withstand the loads transmitted through the reactor supports. It is thus subjected to most of the loads described in subsection I.3 of this SRP section and is designed and analyzed for all the applicable load combinations. Because of the similarity in geometry and function of the BWR reactor pedestal to the PWR primary shield wall, the design and analysis DRAFT Rev. 2 - April 1996 3.8.3-12 procedures are similar and are reviewed accordingly as has already been discussed in this SRP section. vi. Reactor Shield Wall This cylindrical wall, which surrounds the reactor and provides biological shielding, is also subjected to most of the loads described in subsection I.3 of this SRP section. In most cases, the wall is utilized to anchor pipe restraints in the vicinity of the reactor nozzles may pressurize the space