05000321/FIN-2012003-04
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Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | A licensee-identified violation was discovered on March 2, 2012, of Unit 1 TS 3.9.4, which states that control rod full-in position indication channel for each control rod shall be operable during mode 5. Contrary to this requirement, from February 28 until March 2, 2012, the full-in indication for CRB 22-27 was inoperable with a modified probe buffer card installed to bypass the full-in indication signal in order to remove the rod block. On February 28 licensee personnel inadvertently cleared (i.e., removed) a tag-out for CRB22-27 without removing the modified probe buffer card and without performing a functional test of the full-in indication prior to moving fuel in the reactor vessel. Fuel movement occurred from the time the tag-out was removed until 0817 EST on March 2 when the error was discovered. The inspectors screened the significance of this violation using IMC 0609 Appendix G, Shutdown Operations Significance Determination Process. The finding did not screen as requiring a Phase 2 or Phase 3 review per IMC 0609 Appendix G, therefore this finding screened as having very low risk significance (Green). Corrective actions taken by the licensee included immediately disabling CRB 22-27 to comply with TS 3.9.4 and enhancements to strengthen administrative controls on processes relied upon to comply with TS. This issue was entered in the licensees corrective action program as CR 417608 and was documented in LER 05000321/2012-001. |
| Site: | Hatch  |
|---|---|
| Report | IR 05000321/2012003 Section 4OA7 |
| Date counted | Jun 30, 2012 (2012Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | F Ehrhardt P Higgins S Sandal G Gardner E Morris T Lighty D Hardage |
| INPO aspect | |
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Finding - Hatch - IR 05000321/2012003 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Hatch) @ 2012Q2
Self-Identified List (Hatch)
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