The inspectors identified a non-cited violation of
Technical Specification 5.4.1a for a failure to adequately implement maintenance procedure requirements for the turbine driven
auxiliary feedwater pump (TDAFWP) which, consequently, led to a spurious trip of the TDAFWP, following a
reactor trip, on December 25, 2007. The licensee\'s corrective actions included repair of the affected TDAFWP components and procedure revisions to ensure accurate dimensional checks. The finding was more than minor because it impacted the
mitigating systems cornerstone objective to ensure the availability, reliability, and capability of systems that respond to
initiating events to prevent undesirable consequences, and the related attribute of equipment reliability. The finding was of low safety significance or Green based upon both the motor driven
auxiliary feedwater pumps being available and the subsequent manual restart of the TDAFWP. The cause of the finding was related to the cross-cutting area of human performance, the component of work practices and the aspect involving procedure compliance,
H.4(b), because the licensee failed to adequately implement a maintenance procedure step to identify unacceptable component dimensions. (Section 4OA2.2
