Document: NUREG-0800
Document ID: e5a09c40-178d-4f2b-bd84-cc2bcde67237
Document Type: srp
Title: CONCRETE AND STEEL INTERNAL STRUCTURES OF STEEL OR CONCRETE
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1006/ML100620981.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.8.3
CFR Part: 
CFR Title: 

Content:
eactor 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 used to anchor pipe restraints in the vicinity of the reactor nozzles. A pipe rupture in this area may pressurize the space within the wall. The wall is usually lined on both faces with steel plates which may constitute the major structural elements relied upon to resist the design loads. The review evaluates the analytical and design techniques used to determine the effect of the design loads on the wall with particular emphasis on the assumed boundary conditions and the behavior of the wall under loads. vii. Other Interior Structures Several platforms exist within the BWR containment, some of which are inside the drywell while others are outside the annulus between the drywell and the containment. Platforms inside the drywell are usually constructed of structural steel, and their main structural function is to provide foundations for the pipe restraints inside the drywell. Platforms outside the drywell are usually constructed of a 3.8.3-11 Revision 3 - May 2010 combination of steel and concrete and must be designed to resist the various applicable loads, particularly the effects of pool swell during a LOCA and/or SRV actuation. The analytical procedures for determining pool swell loads are reviewed in accordance with guidance provided in SRP Section 6.2.1. The review evaluates the design and analysis procedures for these platforms, with particular emphasis on the framing and structural behavior under loads. D. Design Reports The applicant=s design report, as described in Appendix C to SRP Section 3.8.4, is reviewed. E. Structural Audit A structural audit, as described in SRP Section 3.8.4, Appendix B, is conducted. 5. Structural Acceptance Criteria. The review evaluates the design limits imposed on the various parameters that quantify the