The inspectors identified a
NCV of
TS 6.8.1, Procedures and Programs, for failure to follow procedure,
ES-507, Review and Processing of Vendor Maintenance and Instruction Manuals, Revision 4, which requires performance of impact reviews of plant procedures due to vendor manual changes and technical updates. The failure resulted in 3 of 4
reactor trip breakers exceeding their service life. In addition, the inspectors identified several discrepancies between the vendor manual and the procedures that had not been properly evaluated. In response, the licensee initiated CR-08-03848 and properly evaluated the impact of the discrepancies noted by the inspectors. This finding is more than minor because it affects the
Mitigating Systems Cornerstone objective to ensure the reliability, availability, and capability of systems that respond to
initiating events and is associated with the attribute of procedure quality, in that inconsistencies were identified in Procedure EMP- 135.004,
Reactor Trip Breaker Testing, Revision 2, where the licensee routinely failed to evaluate differences between vendor recommendations and the procedure. The finding was determined to be of very low safety significance, because there was no loss of the
reactor trip breaker safety function to open on a
reactor trip signal. The cause of this finding was related to the cross-cutting area of operating experience, specifically with respect to including vendor recommendations in procedures to support plant safety. (
P.2.b) (Section 1R21.4
