At 0300 EDT on November 3, 2016, it was identified that a
Service Water leak existed in the Vapor Containment Building of Indian Point Unit 3. The leak was determined to be from 31 Fan Cooler Unit and was subsequently isolated at 0344 EDT by shutting the
Service Water isolation valves to 31 Fan Cooler Unit. This isolation meets the
Technical Specification 3.6.1 Condition A Required Action. The leaking defect could have resulted in post-LOCA air leakage out of containment in excess of that allowed by
Technical Specification 3.6.1 (Containment) which requires leakage rates to comply with
10 CFR 50, Appendix J. This event had no effect on the health and safety of the public.
This event is being reported under 10 CFR 50.72(b)(3) and the guidance of NUREG 1022, section 3.2.7 as a loss of safety function.
The licensee notified the NRC Resident Inspector.