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:
hould 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 combination 9 of Section Q2.1, the load factor applied to load P should a be 1.5/1.1 1.37, instead of 1.25. (7) Sections Q1.24 and Q1.25.10 should be supplemented with the following requirements regarding painting of structural steel: (a) Shop painting to be in accordance with Section M3 of LRFD specifications ("Load and Resistance Factor Design (LRFD) Specification for Structural, Steel Buildings and Its Commentary," American Institute of Steel Construction, Chicago, 1986). (b) All exposed areas after installation to be field painted (or coated) in accordance with the applicable portion of Section M3 of LRFD specifications. (c) The QA requirements for painting (or coating) of structural steel to be in accordance with ANSI N101.4 ("Quality Assurance for Protective Coatings Applied to Nuclear Facilities," American Institute for Chemical Engineers, New York, 1972), as endorsed by RG 1.54, "Quality Assurance Requirements for Protective Coatings Applied to Water Cooled Nuclear Power Plants." Technical Bases (1) The standard defines the "secondary stress" as: "any normal stress or shear stress developed by the constraint of adjacent material or by self-constraint of the structure. The basic characteristic of a secondary stress is that it is self-limiting due to deformation- limited effects." This definition has been interpreted by some to be applicable to the stresses generated by mechanical (i.e., non-thermal) loads at the structural discontinuities. The position in Section I of this Appendix clarifies the staff's interpretation. (2) These notes provide guidance to the users regarding consideration of additional load effects in designing steel structures. The notes are parts of SRP Sections 3.8.3 and 3.8.4. (3) The research done in the last 12 years on the strength and