05000237/FIN-2009004-03
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Finding | |
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| Title | Low Pressure Coolant Injection Pump Mechanical Seals |
| Description | The inspectors identified an unresolved item regarding the non-safety related classification of the Unit 2 and Unit 3 low pressure coolant injection pump (LPCI) mechanical seals. Description: On July 6, 2009, the 2A LPCI pump seal was replaced under Work Order 548808-01. A non-safety related seal was used. The licensee performed an evaluation (D-93-003-0858-00) in 1993 stating that it was acceptable to use a non-safety related seal in the LPCI and core spray pumps. The inspectors questioned the evaluation because of the very limited explanation and justification for the classification downgrade. For example, the licensee stated that a seal failure in any form would only result in minor seal leakage with no technical justification for that assumption. The licensee performed another evaluation EC 376561, Safety Classification of LPCI Pump Shaft Seals. The inspectors reviewed this evaluation and found it lacking in technical justification also. The licensee has stated that a pump seal failure will only result in minor leakage with no justification other than it has never had more than minor leakage in the past. The inspectors planned to review this technical explanation. Whether or not the LPCI and core spray pumps on both units are in conformance with regulatory requirements is considered an unresolved item pending further NRC review. |
| Site: | Dresden  |
|---|---|
| Report | IR 05000237/2009004 Section 1R15 |
| Date counted | Sep 30, 2009 (2009Q3) |
| Type: | URI: |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.15 |
| Inspectors (proximate) | M Munir S Sheldon C Brown S Kobylarz S Spiegelman A Stone N Adorno J Coroju-Sandins Edmondsd Melendez-Colon W Slawinski C Phillips M Ring J Benjamin D Lords E Coffman C Scott |
| INPO aspect | |
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Finding - Dresden - IR 05000237/2009004 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Dresden) @ 2009Q3
Self-Identified List (Dresden)
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