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:
should be maintained under the differential pressure. However, for the concentrated accident loads such as Y or Y , r j elasto-plastic behavior may be assumed as long as the reflections are limited to maintain functional requirements. Simplified methods for determining effective dynamic load factors for elastic behavior are acceptable if found in accordance with recognized dynamic analysis methods. (ii)ii. Secondary Shield Walls Design and analysis procedures utilized for the secondary shield walls are acceptable if found in accordance with conventional beam/slab design and analysis procedures described in the ACI 349 Code (Ref. 2).103 Similar to the primary shield wall, the secondary shield walls are also subject to dynamic loss-of-coolant accidentLOCA loads and the same 104 methods described in item (i) above subsection II.4.a.i are, therefore, 105 applicable and acceptable. (iii)iii. Other Interior Structures Most of the other interior structures that are reviewed are combinations of reinforced concrete slabs, walls, beams, and columns, and steel beams and columns, which are classified as Category I structures subject to the loads and load combinations described in subsection II.3 of this SRP section. DRAFT Rev. 2 - April 1996 3.8.3-26 Analytical techniques for these structures are acceptable if found in accordance with those described in the ACI 349 Code for concrete and with those in the AISC N690 Specifications for steel. 106 b. For PWR Ice-condenser Containment Internal Structures (i)i. Divider Barrier The most important loads that usually govern the design of the divider barrier are those induced by the loss-of-coolant accidentLOCA,107 including the differential pressure across the barrier and any concentrated jet impingement loads. As the divider barrier is a combination of walls and slabs framed together, the design and analysis procedures are acceptable if found in accordance with the ACI 318 Code for the concrete portions of the divider barrier. These