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:
n the third combination 0.5 under E should be replaced by the ss word "or." (ii) It should be indicated that the maximum values of P , T , R , R , a a a r including an appropriate dynamic load factor, should be applied simultaneously, unless a time-history is performed to justify otherwise.91 Steel portions of the divider barrier which resist the design differential pressure and are not backed by concrete, such as penetrations, hatches, locks, and guard pipes, should be designed in accordance with the appropriate sections of Subsection NE of the ASME Code, Section III, Division 1, (Ref. 5), together with the applicable loads, load 92 combinations, and acceptance criteria of Regulatory Guide 1.57 (Ref. 9).93 eii. Ice-Condenser Elements In the ice-condenser containment system, the structural integrity of the ice baskets, ice-bed framing, and their supports is important to the functional integrity of the containment system. The major loads that are applicable to the ice-condenser elements are: D, L, E, E', and P . For this structure, a P is the LOCA pressure load induced by drag and change in momentum a of the flowing air and steam. Load combinations for the ice-condenser elements are acceptable if found in accordance with the following: (ia) For service load conditions, if elastic working stress design methods are used: (1) D + L (2) D + L + E 3.8.3-23 DRAFT Rev. 2 - April 1996 (iib) For service load conditions, if plastic design methods are used: (1) 1.7 D + 1.7 L (2) 1.7 D + 1.7 L + 1.7 E (iiic) For service load conditions, if an experimental test verification of the design is used: (1) 1.9 D + 1.9 L (2) 1.9 D + 1.9 L + 1.9 E If thermal stresses are significant and have to be considered, an acceptable procedure for accounting for such thermal loads is contained in item (a) of Subarticle NF-3231.1 of Subsection F of the ASME Code, Section III, Division 1 (Ref. 1).94 (ivd) For factored load conditions, if elastic working stress design methods are used: (3) D + L + E'