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:
or the design, fabrication, and erection of safety- related structures is acceptable to the staff when supplemented by the following staff positions and technical bases. Staff Positions (1) In Section Q1.0.2, the definition of secondary stress should apply to stresses developed by temperature loading only. (2) Add the following notes to Section Q1.3.6: "When any load reduces the effects of other loads, the corresponding coefficient for that load should be taken as 0.9, if it can be demonstrated that the load is always present or occurs simultaneously with other loads. Otherwise, the coefficient for that load should be taken as zero." "Where the structural effects of differential settlement are present, they should be included with the dead load 'D'." "For structures or structural components subjected to hydrodynamic loads resulting from LOCA and/or safety relief valve actuation, the consideration of such loads should be as indicated in the Appendix to SRP Section 3.8.1. Any fluid structure interaction associated with these hydrodynamic loads and those from the postulated earthquake(s) should be taken into account." (3) The stress limit coefficients (SLCs) for compression in Table Q1.5.7.1 should be as follows: 1.3 instead of 1.5 [stated in footnote (c)] in load combinations 2, 5, and 6. 1.4 instead of 1.6 in load combinations 7, 8, and 9. 1.6 instead of 1.7 in load combination 11. (4) Add the following note to Section Q1.5.8: "For constrained (rotation and/or displacement) members supporting safety-related structures, systems, or components the stresses under load combinations 9, 10, and 11 3.8.4-47 DRAFT Rev. 2 - April 1996 should be limited to those allowed in Table Q1.5.7.1 as modified by provision 3 above. Ductility factors of Table Q.5.8.1 (or provision 5 below) should not be used in these cases." (5) For ductility factors 'µ' in Sections Q1.5.7.2 and Q1.5.8, substitute provisions of Appendix A, II.2 of SRP Section 3.5.3 in lieu of Table Q1.5.8.1. (6) In load