05000321/FIN-2010004-08
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Finding | |
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Title | Licensee-Identified Violation |
Description | A licensee-identified violation was discovered on March 9, 2009 for Unit 1 of TS 3.3.5.1, and 3.3.5.2, when one of two required channels of CST level low for both HPCI and RCIC were determined to be at values less than that required by TS. These low level channels for HPCI and RCIC function to allow the automatic suction swap from the CST to the torus. TS 3.3.5.1 requires emergency core cooling system (ECCS) instrumentation to be operable per Table 3.3.5.1-1. TS 3.3.5.2 requires RCIC system instrumentation to be operable per Table 3.3.5.2-1. Contrary to the above TS requirements, prior to March 9, 2009 for HPCI and RCIC one of two required CST level low channels did not meet the allowed values as specified in TS Table 3.3.5.2-1 and 3.3.5.2-1. The significance of this TS violation was screened using Phase 1 of the SDP in accordance with NRC IMC 0609 Attachment 4, Table 4a. This violation screened as Green because each question under the Mitigating Systems Cornerstone column of Table 4a was answered no. This issue was captured in the licensees corrective action program as CR 2009102615, 2009102616, 2009102980, and 2009103407 and was documented in LER 05000321/2009-001 |
Site: | Hatch ![]() |
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Report | IR 05000321/2010004 Section 4OA7 |
Date counted | Sep 30, 2010 (2010Q3) |
Type: | NCV: Green |
cornerstone | Mitigating Systems |
Identified by: | Licensee-identified |
Inspection Procedure: | |
Inspectors (proximate) | S Shaeffer G Johnson M Cain E Morris P Niebaum K Schaaf D Hardage |
INPO aspect | |
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Finding - Hatch - IR 05000321/2010004 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Hatch) @ 2010Q3
Self-Identified List (Hatch)
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