Subsection NF—Supports


On December 31, 1973, the American Society of Mechanical Engineers (ASME) published Subsection NF of the ASME Boiler and Pressure Vessel Code Section III, Division 1 (hereafter addressed as Subsection NF) as part of the winter 1973 addenda to the 1971 Code edition. This was a historic publication; prior to it, supports (also called pipe hangers and restraints) were not addressed as part of ASME Section III. Existing nuclear plants and plants under construction during that time were using ANSI B31.1, ANSI B31.7, MSS-SP58, and the AISC Manual of Steel Construction to design supports. ASME Section III, Subsection NF, provided a stabilizing position for future nuclear plant support design by designating a single source of rules for the design, construction, fabrication, and examination of supports.

10.1Executive Summary
10.2NF-1000 Introduction
10.3NF-2000 Materials
10.4NF-3000 Design
10.5NF-4000 Fabrication and Installation
10.6NF-5000 Examination
10.7NF-8000 Nameplates, Stamping, and Reports
10.8NF Appendices
10.9Code Cases and Interpretations
10.10Summary of Changes
10.11ASME B31.1 and B31.3 Supports

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