Document: NUREG-0800
Document ID: 4d089e13-715b-4211-8ed5-d715cdd1923e
Document Type: srp
Title: CONCRETE AND STEEL INTERNAL STRUCTURES OF STEEL OR
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1235/ML12353A377.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.8.3
CFR Part: 
CFR Title: 

Content:
for radiation shielding purposes. It is supported on the reactor pedestal. The wall may be lined on both surfaces with steel plates which also may act as the main structural components of the wall. In addition, the wall may be used as an anchor for pipe restraints. The review evaluates the general arrangement and principal features of the reactor shield wall, with particular emphasis on structure framing and behavior under loads. vii. Other Interior Structures The review evaluates the other major interior structures constructed of reinforced concrete or structural steel, or combinations thereof, including the floors located inside the drywell and in the annulus between the drywell and the containment and the polar crane supporting elements. The general arrangement and principal features of these structures are reviewed. Some recent applications (e.g., AP600 and AP1000) also use modular construction methods for the major containment internal structures. Wall modules are typically constructed from large, prefabricated sections of steel plates spaced apart with intermittent steel members, joined with other modules at the site, and then filled with concrete. The concrete fill used in wall modules could be structural concrete with reinforcement (composite construction) or fill concrete of low strength without reinforcement, or heavy concrete for radiation shielding. Floor modules consist of prefabricated steel members and plates and are combined with poured concrete to create a composite section. In view of the new application of modules to nuclear power plants, the structural module design, fabrication, configuration, layout, and connections will be reviewed on a case-by-case basis. 2. Applicable Codes, Standards, and Specifications 3.8.3-7 Draft Revision 4 - December 2012 The review evaluates the information pertaining to design codes, standards, specifications, and Regulatory Guides (RGs), as well as industry standards, that is applied in the design, fabrication,