05000321/FIN-2008008-01
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Finding | |
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| Title | |
| Description | An unresolved item was identified pertaining to the biennial preventative maintenance inspections performed on the EDG couplings. Cracks in the coupling gland that were identified during routine maintenance inspections were not documented in the associated plant records since 1994. Description: Based on information provided by the licensee and interviews with licensee personnel, it was concluded that preventive maintenance inspections had observed cracks in the couplings as early as 1994. The inspectors review of the coupling inspection records for 52SV-R43-001-0 indicated that no damage existed, as shown in Attachment 3. The procedure directed the coupling be visually examined for damage, deterioration, and loose bolts. The procedure did not contain any specific acceptance criteria pertaining to coupling damage or deterioration. Because the earlier observation of coupling cracks were not documented, no actions were taken to determine if the observed cracks were acceptable or required further evaluation to determine operability. The degradation of the EDG coupling subsequently resulted in the inoperability of the 1B and 1C EDGs. The licensee is performing a root cause investigation for the EDG coupling problems and the contributing causes surrounding this event. This issue is unresolved pending NRC review of the licensees completed root cause investigation, and is designated as unresolved item (URI) 05000321,366/2008008001, Review of EDG Coupling Root Cause Evaluation |
| Site: | Hatch  |
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| Report | IR 05000321/2008008 Section 4OA5 |
| Date counted | Sep 30, 2008 (2008Q3) |
| Type: | URI: |
| cornerstone | No Cornerstone |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 93812 |
| Inspectors (proximate) | C Evans G Mcdonald J Hickey J Munday S Shaeffer S Sparks T Lightys Shaefferj Brady P Niebaum S Crane |
| INPO aspect | |
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Finding - Hatch - IR 05000321/2008008 | ||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Hatch) @ 2008Q3
Self-Identified List (Hatch)
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