ANSI/AISC N690-06 Specification for Safety-Related Steel Structures for Nuclear Facilities
ANSI/AISC N690-06 Specification for Safety-Related Steel Structures for Nuclear Facilities
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Size: 0.8 MB | Format: PDF | Publisher: AISC | Year: 2007 | pages: 70
The Specification for Safety-Related Steel Structures in Nuclear Facilities, hereafter referred to as the Nuclear Specification, shall apply to the design of safetyrelated
steel structures and steel elements in nuclear facilities. The Chapter, Appendix, and Section designations within the Nuclear Specification are preceded by letter N to denote nuclear facility provisions. The Nuclear Specification is compatible with the AISC Specification for Structural Steel Buildings (ANSI/AISC 360), hereafter referred to as the Specification. Provisions of the Specification are applicable unless stated otherwise. Only those sections that differ from the Specification provisions are indicated in the Nuclear Specification. The Nuclear Specification includes the list of additional symbols, additional glossary terms, Chapters NA through NM, and Appendices N1 through N7. The commentary and user notes (interspersed throughout the specification) are not part of the specification. User Note: User notes are intended to provide concise and practical guidance in the application of the provisions. The steel elements shall be as defined in the AISC Code of Standard Practice for Steel Buildings and Bridges, Section 2.1. Structures and structural elements subject to the Nuclear Specification are those steel structures that are part of a safety-related system or that support, house, or protect safety-related systems or components, the failure of which would impair the safety-related functions of these systems or components. Safety categorization for nuclear facility steel structures and structural elements shall be the responsibility of the owner. Specifically excluded from the Nuclear Specification are the pressure-retaining components, for example, pressure vessels, valves, pumps, and piping. In the design of members and connections of seismic load resisting systems, the AISC Seismic Provisions for Structural Steel Buildings (ANSI/AISC 341), in general, are not applicable. However, the detailing requirements of Sections 6 and 7 of the Seismic Provisions shall be appropriately considered when designing for inelastic behavior. The sponsors of any structural system or construction within the scope of the Nuclear Specification, the adequacy of which has been shown by successful use or by analysis or test, but which does not conform to or is not covered by the Nuclear Specification, shall have the right to present the data on which their design is based to the authority having jurisdiction for review and approval. User Note: For the design of structural members, other than hollow structural sections (HSS), that are cold-formed to shapes with elements not more than 1 in. (25 mm) in thickness, the use of provisions of the AISI North American Specification for the Design of Cold-Formed Steel Structural Members is recommended, incorporating the loads and load combinations delineated in Section NB2 of the Nuclear Specification.
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