Bulletin 2004-01 Inspection of Alloy 82/182/600 Materials Used in the Fabrication of Pressurizer Penetrations and Steam Space Piping Connections at Pressurized-Water Reactors (PWRs); Notice of Availability

概要

The Nuclear Regulatory Commission (NRC) has issued NRC Bulletin 2004-01 to all holders of operating licenses for PWRs except those who have permanently ceased operations and have certified that fuel has been permanently removed from the reactor pressure vessel. The NRC is issuing this bulletin to: (1) Advise PWR licensees that current methods of inspecting Alloy 82/182/600 materials used in the fabrication of pressurizer penetrations and steam space piping connections may need to be supplemented with additional measures to detect and adequately characterize flaws due to primary water stress corrosion cracking, (2) Request PWR addressees to provide the NRC with information related to the materials from which the pressurizer penetrations and steam space piping connections at their facilities were fabricated, (3) Request PWR licensees to provide the NRC with information related to the inspections that have been and those that will be performed to ensure that degradation of Alloy 82/182/600 materials used in the fabrication of pressurizer penetrations and steam space piping connections will be identified, adequately characterized, and repaired, and (4) Require PWR addresses to provide