Document: NUREG-0800
Document ID: b172ba61-9651-45f8-ac8e-6d6e00e27060
Document Type: srp
Title: STEEL CONTAINMENT
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1006/ML100630179.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.8.2
CFR Part: 
CFR Title: 

Content:
(1), 10 CFR 50.44) D + Pg1 + Pg2 Note: In this load combination, Pg1 + Pg2 should not be less than 310 kilo Pascals (kPa) or 45 pounds per square in gauge (psig). (e) Dead load plus pressure resulting from an accident that releases hydrogen generated from 100-percent fuel clad metal-water reaction accompanied by the added pressure from postaccident inerting, assuming carbon dioxide as the inerting agent (10 CFR 50.34(f)(3)(v)(A)(1)) D + Pg1 + Pg3 3.8.2-15 Revision 3 - May 2010 Note: In this load combination, Pg1 + Pg3 should not be less than 310 kPa or (45 psig). (4) Level D Service Limits These service limits include other applicable service limits and loadings of a local dynamic nature for which the containment function is required. The load combinations corresponding to these limits include the following: (a) Design-basis LOCA in combination with SSE and local dynamic loadings D + L + Ta + Ra + Pa + Yr + Yj + Ym + E' (b) Multiple SRV actuations in combination with small- or intermediate-break accident, SSE, and local dynamic loadings D + L + Ta + Ra + Pa + Yr + Yj + Ym + Ps + Ts + Rs + E' (5) Postflooding Condition This includes the post-LOCA flooding of the containment in combination with OBE-basis earthquake D + L + FL + E C. Construction Loads Temporary construction loads and the effects of environmental loads during the construction stage need to be considered. ASME Code, Section III, Subsection NE, does not address this. The sections of Structural Engineering Institute/American Society of Civil Engineers (SEI/ASCE) Standard 37-02 pertaining to steel structures may be used for guidance. D. External Environmental Loads A concrete shield building typically protects steel containments from the environment. If environmental loads external to the steel containment (e.g., wind, tornado, external flooding) either directly or indirectly impose loads on the steel containment, the design of the steel containment also needs to consider these loads. Load combinations and