05000348/FIN-2012004-01
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Finding | |
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| Title | |
| Description | A Green self revealing NCV of TS 5.4.1.a, Procedures, was identified for the failure to accomplish the installation of the auxiliary contacts of the K1 relay associated with the 1C emergency diesel generator (EDG) in accordance with station work order SNC92235. The improper installation resulted in a direct short of control circuitry wiring and damage to installed resistors and wiring. Local annunciator panels alarmed and the licensee promptly shutdown the engine. The licensee replaced damaged wiring and resistors. This violation was entered into the licensees corrective action program as condition report (CR) 467468. Failure to accomplish the installation of the auxiliary contacts of the K1 relay associated with the 1C EDG in accordance with station work order SNC92235 is a performance deficiency. The performance deficiency adversely affects the Mitigating Systems Cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences (i.e. core damage). Specifically, the equipment performance objective of availability was adversely affected due to the damage caused to the static exciter and voltage regulator circuit of the generator and the additional unavailability time accrued to effect repairs. This finding was assessed using IMC 0609 Attachment 4, Initial Characterization of Findings; and IMC 0609 Appendix A, The Significance Determination Process (SDP) for Findings At-Power. The IMC 0609 Appendix A review, determined that the finding was of very low safety significance (Green) because the performance deficiency resulted in additional EDG unavailability that did not exceed the period of the TS Limiting Condition for Operation. The inspectors determined this performance deficiency has a cross-cutting aspect in the area of human performance and resources component because the licensee did not ensure that personnel, equipment, procedures, and other resources were available and adequate to assure nuclear safety. Specifically, station work order SNC92235 only provided high level guidance for replacing the K1 relay which was insufficient to ensure proper replacement of the relay and was therefore inadequate. |
| Site: | Farley  |
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| Report | IR 05000348/2012004 Section 1R12 |
| Date counted | Sep 30, 2012 (2012Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71111.12 |
| Inspectors (proximate) | D Lanyi E Crowe F Ehrhardt G Croon G Laska J Sowa M Miller T Lighty |
| CCA | H.7, Documentation |
| INPO aspect | WP.3 |
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Finding - Farley - IR 05000348/2012004 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Farley) @ 2012Q3
Self-Identified List (Farley)
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