This Subsection contains requirements for materials, design, fabrication, examination, testing and overpressure relief of Class 1 components, parts, and appurtenances which are expected to function even when metal temperatures exceed those covered by the rules and stress limits of Subsection NB and Tables 2A, 2B, and 4 of Section II, Part D, Subpart 1.
Includes all addenda, interpretations, and updates until 2010.
