The inspectors identified a performance deficiency involving a
NCV of Title 10 of the Code of Federal Regulations (10 CFR), Part 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, related to a plant barrier impairment (PBI) procedure. The procedure for PBI did not contain steps to ensure that relied-upon compensatory measures were maintained. Specifically, while the B Train room of essential
service water had a flood barrier removed and covered under a PBI, the compensatory measure of
sump alarms were found not functioning. The licensee has entered the issue into their corrective action program, repaired the
sump alarms, and plans to revise the PBI procedure. The inspectors concluded that the finding was greater than minor because the licensee failed to effectively manage prescribed compensatory measures related to a cornerstone objective. The finding was determined to be of very low safety significance based on a
SDP Phase 1 screening in accordance with
IMC 0609, Table 4a, because the finding did not increase the likelihood of an external or internal flood. The primary cause of this
NCV was related to the cross-cutting component of Human Performance for Resources (Item H.2.(c)) because the licensees PBI procedure was not adequate in that it did not ensure safety margins were maintained by providing instructions to periodically verify that the compensatory measures were still available
