Energia i regulacje · 30/03/1998

Proposed Generic Communication; Augmented Inspection of Pressurized-Water Reactor Class 1 High Pressure Safety Injection Piping (M99226)

The Nuclear Regulatory Commission (NRC) is proposing to issue a generic letter to all holders of operating licenses for pressurized- water reactors, except those who have permanently ceased operations and have certified that fuel has been permanently removed from the reactor vessel, to (1) identify a discrepancy in the American Society of Mechanical Engineers (ASME) Code inspection requirements regarding the inservice inspection of those portions of the high-pressure safety injection system piping designated as ASME Code Class 1 with nominal pipe sizes between 4 inches and 1\1/2\ inches, inclusive, (2) emphasize the need for addressees to maintain the integrity of this reactor coolant pressure boundary piping in accordance with the provisions of their current facility licensing bases, and (3) request that addressees report to the NRC their previous actions for verifying the integrity of the subject piping and their plans regarding future inspections. The proposed generic letter has been endorsed by the Committee to Review Generic Requirements (CRGR). Relevant information that was sent to the CRGR will be placed in the NRC Public Document Room. The NRC is seeking comment from intere