05000424/FIN-2011005-03
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Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | Technical Specification (TS) 3.0.4, Limiting Condition for Operation (LCO) Applicability states in-part, When an LCO is not met, entry into a Mode or other specified condition in the Applicability shall only be made; a) When the associated ACTIONS to be entered permit continued operation in the Mode or other specified condition in the Applicability for an unlimited period of time; or b) After performance of a risk assessment addressing inoperable systems and components or c) When an allowance is stated in the individual value, parameter or other Specification. Contrary to this requirement on October 27, 2011 it was discovered by the licensee that Mode changes had been made contrary to TS LCO 3.0.4. Technical Specification (TS) 3.3.4, Remote Shutdown System, Limiting Condition for Operation (LCO) is applicable in Modes 1, 2, and 3 and requires two channels of Core Exit Thermocouples (CETC) to be operable. During startup from the refueling outage 2R15, one of the CETC channels credited for satisfying this requirement was inoperable but was not recognized as being inoperable until the unit was in Mode 1. Since mode changes were made with only one of the two required CETC channels operable, the unit was operated in a condition contrary to TS LCO 3.0.4. The inspectors used Inspection Manual Chapter 601, Phase 1 worksheets, mitigating systems cornerstone, to conduct an initial screening and characterization of this violation. The inspectors concluded, from this screening, that this violation was of very low significance (Green). The licensee has entered this issue into their corrective action program as CR 374623, completed an enhanced apparent cause determination, drafted LER 05000425/2011-001, and implemented a temporary modification to restore the channel to operable status. This licensee-identified violation is closed. |
| Site: | Vogtle  |
|---|---|
| Report | IR 05000424/2011005 Section 4OA7 |
| Date counted | Dec 31, 2011 (2011Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | F Ehrhardt M Bates J Hickey M Cain R Baldwin B Caballero T Chandler T Lighty |
| INPO aspect | |
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Finding - Vogtle - IR 05000424/2011005 | |||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Vogtle) @ 2011Q4
Self-Identified List (Vogtle)
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