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10 CFR 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, requires in part, that activities affecting quality shall be prescribed by documented instructions, procedure of a type appropriate to the circumstances and shall be accomplished in accordance with these instructions, and procedures. General Maintenance Procedure (GMP)-ELEC-39, Electrical Man- Hole Inspection, Revision 1 was used for inspection of man-hole (MH) 105 that contained safety related control, instrumentation, and communication cables. Per this GMP, a CR is required to be initiated if water was found in the man-hole. Contrary to the above, the licensee identified that on April 5, 2013, a CR was not initiated when MH105 was found to contain water partially submerging control, instrumentation, and communication cables for three safety related station substation breakers within the MH and the
sump pump was found to be nonfunctional. Although the water was removed from MH 105 on April 5, 2013, the failure to initiate a CR for the existence of water and the non-functional
sump pump resulted in the identification of water in MH 105 during a bi-annual inspection on October 23, 2013; and repeated partial submergence of safety related cables contained within the man-hole. The finding screened as very low safety significance (Green) because the finding did not cause a
reactor trip and the loss of mitigation equipment relied upon to transition the plant from the onset of the trip to a stable shutdown condition and the finding did not involve the complete or partial loss of a support system that contributes to the likelihood of, or cause, an initiating event and affected mitigation equipment. The licensee documented the procedure non-compliance in CRs 01920567 and 01920572, and performed a condition evaluation to determine why prior corrective actions to address the non-functional
sump pump were not effective to ensure that cables within MH 105 would not come in contact with water. Corrective actions included communications to applicable plant departments to emphasize the requirements of GMP-ELEC-39 and the stations
CAP.
