On September 16, 2004 examinations of the
steam generator (
SG) bowl drains (
SGBDs) for the 2A, 2C and 2D
SGs were performed as part of the Alloy 600 program during 2EOC13. These examinations determined that the 2C and 2D
SGBDs had leakage and the leakage appeared to be
pressure boundary leakage. The 2A
SGBD examination determined that the
ASME code acceptance limits were satisfied. An evaluation of the leakage indications determined that the leakage had existed for some time prior to the Unit 2 shutdown. The evaluation of this condition on September 17, 2004, determined that this met the reportability criteria of
10 CFR 50.72 (b)(3)(ii)(A). Unit 2 is currently in MODE 6 and this event has no impact on current plant operation. Engineering and plant management are evaluating repair methods to be completed during this refueling outage. This event is not applicable to Unit 1 because the Unit 1
steam generators are of a different design and do not have a drain line in the bottom channel head.
The licensee will notify the NRC Resident Inspector.
