05000445/FIN-2013005-02
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Finding | |
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Title | Cutting Incorrect Cable Results in an Inoperable Offsite Power Source |
Description | The inspectors reviewed a self-revealing finding for the failure of maintenance personnel to follow work instructions. Specifically, maintenance personnel failed to follow instructions and cut the wrong cable during a transformer modification. As a result, one offsite power source to both units was unavailable during the repair of the damaged cable. The licensee entered the finding into the corrective action program as Condition Report CR-2013-011124. The finding was more than minor because it was associated with the human performance attribute of the Mitigating Systems cornerstone and adversely affected the cornerstone objective to ensure the capability of systems that respond to initiating events to prevent undesirable consequences. Using Inspection Manual Chapter 0609, Appendix A, The Significance Determination Process for Findings At Power, the finding was determined to be of very low safety significance (Green) because the finding was not a design or qualification deficiency; did not represent an actual loss of safety function of a system or train; and did not result in the loss of one or more trains of non-technical specification trains of equipment. The finding has a human performance cross-cutting aspect associated with work practices in that the licensee personnel failed to use human performance error prevention techniques such as self and peer checking when cutting cables. |
Site: | Comanche Peak ![]() |
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Report | IR 05000445/2013005 Section 1R18 |
Date counted | Dec 31, 2013 (2013Q4) |
Type: | Finding: Green |
cornerstone | Mitigating Systems |
Identified by: | NRC identified |
Inspection Procedure: | IP 71111.18 |
Inspectors (proximate) | D Strickland J Dixon J Kramer L Carson N Greene N Okonkwo P Elkmann R Kumana W Walker |
CCA | H.12, Avoid Complacency |
INPO aspect | QA.4 |
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Finding - Comanche Peak - IR 05000445/2013005 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Comanche Peak) @ 2013Q4
Self-Identified List (Comanche Peak)
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