05000321/FIN-2012005-04
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Finding | |
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| Title | Licensee-Identified Violation |
| Description | A licensee-identified violation of Hatch Unit 1 TS 3.4.4, Reactor Coolant System Operational Leakage, was discovered on March 13, 2012, during the performance of a reactor pressure vessel pressure test. TS 3.4.4 requires, in part, that reactor coolant system operational leakage shall be limited to no pressure boundary leakage in Modes 1, 2, and 3. Contrary to this requirement a through-wall leak was identified in a small bore line located upstream of a high pressure coolant injection isolation valve resulting in pressure boundary leakage during Modes 1, 2, and 3. The inspectors utilized IMC 0609 Appendix A, Exhibit 1, Initiating Events Screening Questions, dated July 1, 2012, and determined this violation screened as Green because the through-wall leak did not result in exceeding the reactor coolant system leak rate for a small loss of coolant accident, and did not adversely affect other systems used to mitigate a loss of coolant accident. The licensee entered this violation into their corrective action program as CR 423179. |
| Site: | Hatch  |
|---|---|
| Report | IR 05000321/2012005 Section 4OA7 |
| Date counted | Dec 31, 2012 (2012Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | D Berkshire F Ehrhardt W Loo J Laughlin M Miller M Speck B Caballero S Sandal E Morris D Hardage M Schwieg |
| INPO aspect | |
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Finding - Hatch - IR 05000321/2012005 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Hatch) @ 2012Q4
Self-Identified List (Hatch)
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