On November 21, 2018, during an extent of condition review, after completion of ultrasonic testing, further interrogation of reactor vessel closure head (
RVCH) penetration 36 was performed using
eddy current testing. The testing detected three repairable indications. No indication of
boric acid leakage was identified at this location during the bare metal visual inspection. Extent of condition review is complete on all
RVCH penetrations.
The plant was in cold shutdown at 0 percent power and in Mode 6 for a refueling outage at the time of discovery. Repair actions will be completed prior to plant startup from the outage.
This condition has no impact to the health and safety of the public.
This report is being made in accordance with 10 CFR 50.72(b)(3)(ii)(A) for degradation of a principal safety barrier.
The licensee notified the NRC Senior Resident Inspector.
