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:
y components. The ice-condenser and its components should be analyzed or tested for various loads and combinations thereof, including dead and live loads, thermal loads induced by differential thermal expansion within the various elements, seismic loads, and loads induced by a LOCA. Accident loads include pressure differential drag loads and loads induced by the change of momentum of the flowing steam. Elastic analysis is usually used for the ice-condenser and its components. However, plastic analysis may also be used as an alternate approach. Accordingly, the review evaluates the load factors that are applied to each of the applicable loads and their basis and justification. When experimental verification of the design using simulated load conditions is employed, the review evaluates the procedures used to account for similitude relationships which exist between the actual component and the test model to ensure that the results obtained from the test are a conservative representation of the load-carrying capability of the actual component under the postulated loading. C. BWR Containment Internal Structures This SRP section is oriented toward the BWR Mark III containment concept. Other BWR containment types are reviewed in a similar manner. 3.8.3-11 Revision 4 – September 2013 i. Drywell The drywell, which has to maintain a certain degree of leak tightness during a LOCA, is critical to the proper functioning of the containment. Because it geometrically resembles a containment, the design and analysis procedures used for the drywell are reviewed on a basis similar to that used to review containments as described in Subsection I.4 of SRP Sections 3.8.1 and 3.8.2 for concrete and steel portions, respectively. ii. Weir Wall One of the major loads to which the weir wall may be subjected is a jet impingement load induced by a pipe rupture in a nearby recirculation loop. Under such a concentrated load, the weir wall should not deform to an extent that it might impair or