On October 23, 2012, V. C. Summer Station Unit 1 (
VCSNS) identified two reactor vessel head penetrations (19 and 52) that did not meet the requirements of
10CFR50.55a(g)(6)(ii)(D) and
ASME Code Case N-729-1. The station is in a refueling outage (RF20) and the plant is currently shutdown and in Mode 6. The reactor vessel head (RVH) contains a total of 66 penetrations and inspection efforts are approximately 50% percent complete. There have been no previous repairs to the reactor vessel head penetrations and/or j-groove welds. The indications are not through wall as indicated by volumetric and bare metal visual inspections. The penetrations will be repaired to meet the requirements of
10CFR50.55a prior to returning the vessel head to service.
The inspection results are reportable pursuant to 10CFR50.72(b)(3)(ii)(A). The NRC Resident Inspector has been notified.
The licensee will notify the State of South Carolina and local counties.
- * * UPDATE FROM BETH QUATTLEBAUM TO PETE SNYDER AT 1800 ON 10/25/12 * * *
On October 25, 2012, V. C. Summer Station Unit 1 (VCSNS) finalized our inspections of the reactor vessel head, which has identified a total of four reactor vessel head penetrations (19, 52, 31, and 37) that did not meet the requirements of 10CFR50.55a(g)(6)(ii)(D) and ASME Code Case N-729-1. The station is in a refueling outage (RF20) and the plant is currently shutdown and defueled. The indications are not through wall as indicated from volumetric and bare metal visual inspections. The penetrations will be repaired to meet the requirements of 10CFR50.55a prior to returning the vessel head to service.
The inspection results are reportable pursuant to 10CFR50.72(b)(3)(ii)(A). The NRC Resident Inspector has been notified.
Notified R2DO (Musser).
