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:
(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' (4) D + L + P (5) D + L + P + E' a (ve) For factored load conditions, if plastic design methods are used: (3) 1.3 D + 1.3 L + 1.3 E' (4) 1.3 D + 1.3 L + 1.3 Pa (5) 1.2 D + 1.2 L + 1.2 P + 1.2 E' a (vif) For factored load conditions, if an experimental test verification of the design is used: (3) 1.4 D + 1.4 L + 1.4 E' (4) 1.4 D + 1.4 L + 1.4 Pa (5) 1.3 D + 1.3 L + 1.3 P + 1.3 E' a DRAFT Rev. 2 - April 1996 3.8.3-24 fiii. BWR Mark III Containment Drywell 95 As the structural integrity of the drywell and, to a certain extent, its leaktight integrity as well, are critically important to the proper functioning of the Mark III pressure-suppression system, the drywell is 96 treated, for design and testing purposes only, similar to the containment itself. Accordingly, for concrete pressure-resisting portions of the drywell, the loads and loading combinations of Article CC-3000 of ASME Code Section III, Division 2, (Ref. 4) will apply, with the exceptions listed for 97 concrete portions of the PWR ice-condenser divider barrier. For steel components of the drywell that resist pressure and are not backed by concrete, such as the drywell head, the appropriate sections of Subsection NE of the ASME Code, Section III, Division 1, (Ref. 5)98 should be used together with the applicable loads, load combinations, and acceptance criteria of Regulatory Guide 1.57 (Ref. 11). Specifically, the 99 load combinations of subsection II.3 of Standard Review PlanSRP Section 3.8.2 apply. For the lower vent portion of the drywell: (ia) If the main reinforcement of the drywell is carried down between the vent holes and the reinforced concrete section is relied upon for structural purposes, the criteria that apply to concrete portions of the drywell as described above will apply. (iib) If the main