The inspectors identified a Green finding for the failure of
NMPNS to meet the fleet standard for establishing and implementing preventive maintenance (
PM) templates. Specifically, in 2009,
NMPNS failed to implement
PM templates for critical non-safety related
molded case circuit breakers in accordance with the guidance in the new fleet standard.
NMPNS entered this issue into their corrective action program as CR-2011-011 000 and CR2011- 011045 to evaluate corrective actions needed to address this issue. The inspectors determined that the finding was more than minor because if left uncorrected, the performance deficiency would have the potential to lead to a more significant safety concern. Specifically, continued failure to perform the clean and inspect
PM on critical
NSR MCCBs could lead to a failure that could cause a plant
transient. The inspectors determined that the finding was of very low safety significance (Green) since the finding did not contribute to both the likelihood of a
reactor trip and the likelihood that mitigation equipment or functions will not be available. This finding had a cross-cutting aspect in the human performance area, work practices component, in that
NMPNS did not implement procedures for conducing preventive maintenance on electrical breakers
