Recent design developments in the ASME boiler & pressure vessel code, Section III, Division 1, Nuclear Power Plant Components

Abstract

This paper will review the significant new design changes and additions to the ASME Boiler & Pressure Vessel Code, Section III, Division 1, Nuclear Power Plant Components. Only those subsections related to the pressure boundary of the vessels will be reviewed for the following parts: • Subsection NCA — General Requirements • Subsection NB — Class 1 Components • Subsection NC — Class 2 Components • Subsection ND — Class 3 Components • Subsection NE — Class MC Components • Appendices Starting with the current 1983 Edition of Section III, those items which have been added or revised in the five addenda since the edition was issued on July 1, 1983, will be reviewed. Some of the reasons for the additions and changes will be discussed