Codes and Standards for Nuclear Power Plants; Subsection IWE and Subsection IWL

概要

The Nuclear Regulatory Commission (NRC) proposes to amend its regulations to incorporate by reference the 1992 Edition with the 1992 Addenda of Subsection IWE, ``Requirements for Class MC and Metallic Liners of Class CC Components of Light-Water Cooled Power Plants,'' and Subsection IWL, ``Requirements for Class CC Concrete Components of Light-Water Cooled Power Plants,'' of Section XI, Division 1, of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code) with specified modifications and a limitation. Subsection IWE of the ASME Code provides rules for inservice inspection, repair, and replacement of Class MC pressure retaining components and their integral attachments and of metallic shell and penetration liners of Class CC pressure retaining components and their integral attachments in light-water cooled power plants. Subsection IWL of the ASME Code provides rules for inservice inspection and repair of the reinforced concrete and the post-tensioning systems of Class CC components. Licensees would be required to incorporate Subsection IWE and Subsection IWL into their routine inservice inspection (ISI) program. Licensees would also be required to e