05000331/FIN-2014003-05
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Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | Technical Specification 3.3.8.1, Loss of Power Instrumentation, required in part, that if any 4.16 kV emergency bus under-voltage (degraded voltage) channel was inoperable, that the associated Diesel Generator (DG) be declared inoperable within one hour from discovery of loss of initiation capability for feature(s) in one or both divisions as well as placing the channel in trip within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. Contrary to the above on September 19, 2013, the licensee failed to declare the B DG inoperable and entered a condition prohibited by TSs. Specifically, WO 40126852 was completed to replace relay 127-SB2, 1A4 4KV Emergency Transformer Supply Under-voltage, due to dirty contacts. However, 127-SB2 was returned to service without post maintenance testing appropriate to th
circumstances. This resulted in 127-SB2 being in an inoperable status when the required action to declare the B DG inoperable within one hour was not accomplished. Section 4OA2.5 above provides additional background description for this licensee-identified violation. The licensee documented the conditions prohibited by TSs for relay 127-SB2 in CRs 01934167 and 01934040. The inspectors determined the finding could be evaluated using the SDP in accordance with IMC 0609, Significance Determination Process, Attachment 0609.04, Initial Characterization of Findings, Table 3 Appendix Router an IMC 0609 Appendix A, The Significance Determination Process for Findings At Power, Exhibit 2 Mitigating Systems Screening Questions. Because the inspectors answered No to all questions in Section A, the finding screened as very low safety significance (Green). Section 4OA2.5 describes the corrective actions taken by the licensee. |
| Site: | Duane Arnold  |
|---|---|
| Report | IR 05000331/2014003 Section 4OA7 |
| Date counted | Jun 30, 2014 (2014Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | C Lipa C Norton D Oliver J Steffes L Haeg R Elliott S Shah V Myers |
| Violation of: | Technical Specification |
| INPO aspect | |
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Finding - Duane Arnold - IR 05000331/2014003 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Duane Arnold) @ 2014Q2
Self-Identified List (Duane Arnold)
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