Energia i regulacje · 27.04.1999

Industry Codes and Standards; Amended Requirements

The Nuclear Regulatory Commission is publishing a supplement to the proposed rule published on December 3, 1997 (62 FR 63892) that would eliminate the requirement for licensees to update their inservice inspection (ISI) and inservice testing (IST) programs beyond a baseline edition and addenda of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code (BPV Code). The proposed rule would establish the 1989 Edition of the ASME BPV Code, Section XI, as the baseline Code for IST requirements (except for design and access provisions and preservice examination requirements) for pumps and valves that are classified as ASME Code Class 1, 2, or 3 components in currently operating nuclear power plants. The proposed rule would establish the baseline Code for ISI requirements for components (including supports) classified as ASME Code Class 1, 2, or 3 as the 1989 Edition of the ASME BPV Code, Section XI. The proposed rule would establish the baseline Code for ISI requirements for Class MC and Class CC components and their integral attachments as the 1992 Edition with the 1992 Addenda of Subsections IWE and IWL of the ASME BPV Code, Section XI. Finally, the proposed