There is sufficient reason to believe that the buried
auxiliary feedwater piping associated with Unit 2 is degraded and leaking and thus as a conservative measure it is declared
inoperable. This
operability determination is based on not having a reasonable assurance that the
auxiliary feedwater piping can continue to perform its intended function under all design basis events including seismic events. Approximate leakrate is 8 gpm. Makeup is sufficient at this time to maintain desired level in the affected tank. Further efforts to determine the exact leak location are ongoing. This notification is being made pursuant to 10 CFR 50.72(b)(3)(v)(D) for the 8-hour notification of a condition that could have prevented the fulfillment of the safety function of systems or structures that are needed to mitigate the consequences of an accident.
Emergency Condensate Storage Tank level was decreasing and water has been detected coming from a conduit in the Safeguard Building. Licensee is in Tech Spec 3.0.1 (30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br /> to get below 350 degrees F and 450 psig).
The NRC Resident Inspector was notified of this event by the licensee.
See EN #'s 40770, 40769 & 40768 for Surry Unit 2 related problems.
