The NRC inspectors identified a Green
NCV of
TS 3.7.5, in that
FENOC performed maintenance on the Unit 1
auxiliary feed water (
AFW) system that resulted in three
inoperable AFW trains. Specifically, during maintenance,
FENOC removed the auto-open feature of the
AFW pumps discharge valves. Corrective actions included addressing programmatic issues related to maintenance guidance and operator performance.
FENOC entered the issue into the corrective action program for resolution as CR 2012-01025. The finding is more than minor because it affects the configuration control attribute of the
Mitigating Systems cornerstone and affected the cornerstone objective of ensuring the availability, reliability and capability of systems that respond to
initiating events to prevent undesirable consequences (i.e., core damage). The inspectors determined this finding was not a design qualification deficiency resulting in the loss of functionality, did not represent an actual loss of safety function of a system or train of equipment, and was not potentially risk-significant due to a seismic, fire, flooding or severe weather initiating event. Therefore, the finding is considered to be of very low safety significance. This finding has a cross-cutting aspect in the area of Human Performance, Work Control, because
FENOC failed to plan work activities with appropriate risk insights and understanding of job conditions that impacted the
AFW system.