The inspectors are opening an
URI to review the licensees evaluation of the potential for adverse impact due to floor drain sock filter plugging in safety-related pump rooms and determine if there is a performance deficiency. On November 24, 2012, during a steam leak in the 2A
Feedwater Heater Room, water did not adequately drain from the room through the floor drains due to plugging in the floor drain sock filters. The licensees immediate corrective actions included removing the sock filters so that the water could drain. The sock filters are also installed in safety-related pump rooms in the reactor building. The inspectors are opening an
URI to review the licensees evaluation of the potential for adverse impact due to drain plugging in safety-related pump rooms and determine if there is a performance deficiency. The licensee entered this issue in the
CAP as
NCR 574261. This issue is being tracked as a URI:
URI 05000325/2012005-01 and
05000324/2012005-01, Floor Drains Not Functioning Due to Plugging.
