Document: NUREG-0800
Document ID: 072325a8-02ea-4d59-bb3f-06592c340804
Document Type: srp
Title: The Aluminum Association, Specification for Aluminum Structures
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070327.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.4
CFR Part: 
CFR Title: 

Content:
load combinations 7, 8, and 9. This is appropriate for combinations containing the effects of a single, low-probability event, that is, SSE, tornado, or LOCA. SLC of 1.3 in load combinations 2, 5, and 6 is recommended when the secondary stresses due to T are included in the load combinations. This is consistent with the current o position of allowing higher stresses under the effects of operating temperature. (4) Neither the Standard Review Plan (SRPs) nor the Standard offer any guidance regarding the tolerable deformation of the constrained steel members when they are subjected to temperature growth under sustained T or other LOCA loads. a Statistically meaningful test data simulating the inelastic behavior of such constrained members under representative load combinations (including T and E a s are not available. This provision ensures against the instability condition arising from the effects of T or other LOCA loads under load combinations 9, 10, and a 11. (5) The ductility factors provided in Table Q1.5.8.1 are either more liberal than those in Appendix A of SRP Section 3.5.3 (e.g., µ for compression members), or involve some inconsistencies in definitions and interpretation of the formulae (e.g., "formulae" in 2.D of the table) given in the table. Therefore, until sufficient test-based justification for ductility factors listed in Table Q1.5.8.1 is provided, the staff position as stated in the appendix is recommended for use. (6) This provision makes the load combination consistent with that in the SRP. (7) Additional provision regarding painting of structural steel is provided. 3.8.4-49 DRAFT Rev. 2 - April 1996 REFERENCES 1. Final Safety Evaluation Report Related to the Certification of the Advanced Boiling Water Reactor Design, Appendix G, NUREG-1503, Vol. 2, July 1994. 2. Final Safety Evaluation Report Related to the Certification of the System N80+ Design, Appendix 3B, NUREG-1462, August 1994. 3. "Load and Resistance Factor Design (LRFD) Specification