Chapter 6, authored by John Hechmer, covers Subsection NB, Class 1 Components. In presenting the rules and requirements for Section III, Subsection NB, John discusses the theories on which the rules and requirements are based, the appropriate application for applying the rules and requirements, and the interfaces for design, analysis, and construction. He emphasizes the analytical rules and requirements, and in his discussions he makes reference to the Criteria of the ASME Boiler and Pressure Vessel Code for Design by Analysis in Sections III and VIII, Division 2, 1968, considered the basis document for Sections III and VIII. John provides...