A self-revealing non-cited violation (
NCV) of
Technical Specification 6.4, Procedures, was identified for Entergys failure to provide an adequate procedure for setting the A
service water (
SW) pump lower motor guide bearing during its replacement in May 2007. Specifically, work order (
WO) 111249-14, Replace A
Service Water Pump Lower Motor Guide Bearing, did not provide adequate guidance to ensure proper verification of shaft lift to prevent loading the lower motor guide bearing. As a result, the bearing was improperly set which caused bearing degradation and unplanned A
SW pump inoperability on February 12, 2008. Corrective actions taken or planned include replacement of the A
SW pump motor and revisions to applicable procedures. The finding is more than minor because it is associated with the equipment performance attribute of the
Initiating Events Cornerstone and affects the associated Cornerstone objectives of limiting the likelihood of those events that upset plant stability. The finding is of very low safety significance because the estimated increase in core damage frequency was less than
1E-06, assuming the reactor was operating at full power and the A
SW pump was unavailable for less than 3 days. The performance deficiency has a cross-cutting aspect in the area of Human Performance, Resources component, in that Entergy did not provide an adequate procedure for the installation of the lower motor guide bearing.
H.2(c) (Section 1R12
