This Subsection contains requirements for the material, design, fabrication, examination, testing and overpressure protection of items which are intended to conform to the requirements for Class 1 construction. The rules of Subsection NB cover the requirements for assuring the structural integrity of items.

This publication is issued with an automatic addenda service.  All addenda service publications are issued in loose leaf format to facilitate later insertion of replacement pages which incorporate the latest approved changes to the standard.  Purchasers may wish to purchase a binder from ASME (BPVC Binder), but the publication will also fit a standard three ring binder.  The addenda service includes all updates issued prior to publication of the next edition in July 2013.