A self-revealing, Non-Cited Violation of
10 CFR 50, Appendix B, Criterion XI Test Control, was identified for the failure to properly perform line starter testing for a Unit 2 safety-related battery exhaust fan (
2HVZ-FN216B) in accordance with the written test procedure. The test procedure for the line starter establishes test conditions by installing jumpers into a process rack, RK-2SEC-PROC-B1. Due to misidentification, jumpers were installed into the incorrect process rack, RK-2SEC-PROC-B. This rendered the B train of Quench Spray Chemical Additive System
inoperable. The licensee entered the deficiency into their corrective action program as Condition Report 08-37168.
FENOC performed a root cause evaluation, evaluated appropriate human performance contributors, and initiated corrective actions to prevent recurrence. The finding is greater than minor because it affected the equipment performance attribute of the associated
Mitigating Systems cornerstone objective to ensure the availability, reliability, and capability of systems that respond to
initiating events to prevent undesirable consequences. Using Manual Chapter 0609,
Significance Determination Process, Phase 1 worksheet, the finding was determined to have very low safety significance, because there was no overall loss of system function due to system redundancy and the system would have been able to perform its required safety function for the applicable
mission time during design basis events. The cause of this finding is related to the cross-cutting area of human performance, in that
FENOC failed to utilize adequate self and peer checking during the identification of equipment and circuits specified in the test plan
H.4(a)