Document: NUREG-0800
Document ID: 41d2099f-81b6-48d5-add4-b9fc2d835d13
Document Type: srp
Title: -
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1235/ML12353A365.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.8.1
CFR Part: 
CFR Title: 

Content:
Draft Revision 4 - December 2012 containment liner in excess of the limits established in Subarticle CC-3720 of the ASME Code. The requirements of Subarticle CC-3720 of the ASME Code should be met when the containment structure is exposed to the following loading conditions: i. For the factored load category: D + Pg1 + [Pg2 or Pg3 ] ii. For the service load category, the strains in the containment liner should not exceed the limits set forth in Subarticle CC-3720 when exposed to pressure Pg3. iii. As a minimum design condition for either condition i or ii above, the following load combination must be satisfied: D + 310 kPa (45 psig) where D = Dead load Pg1 = Pressure resulting from an accident that releases hydrogen generated from 100-percent metal-water reaction of the fuel cladding Pg2 = Pressure resulting from uncontrolled hydrogen burning Pg3 = Pressure resulting from postaccident inerting, assuming carbon dioxide is the inerting agent G. 10 CFR 50.44 requires that an analysis be performed that demonstrates that the containment structural integrity is maintained under loads resulting from combustible gases generated from metal-water reaction of the fuel cladding. An analytical technique accepted by the NRC staff should demonstrate the containment structural integrity. This analysis should include sufficient supporting justification to show that the technique describes the containment response to the structural loads involved. RG 1.7 presents further guidance on the analytical technique, loads, loading combination, and acceptance criteria. H. Other site-related or plant-related loads applicable to containment such as floods, explosive hazards in proximity to the site, potential aircraft crashes (nonterrorism- related incidents), and missiles generated from activities of nearby military installations or turbine failures need to be considered. The staff reviews the inclusion of these loads in the factored load combinations on a case-by-case basis. I. The review