ENS 44442
ENS Event | |
|---|---|
08:47 Aug 28, 2008 | |
| Title | Unusual Event - Internal Flooding In Service Water Intake Structure |
| Event Description | Licensee entered into Unusual Event due to EAL 9.7.1, which is internal flooding in excess of sump handling capability affecting safety related areas of the plant.
Failure of the sump pump level switches in the active Service Water Intake Structure (SWIS) bay resulted in several inches of water on the floor and receipt of a SWIS 'Pump Room Flooded' alarm. There was no excessive leakage from the service water system and no damage to safety related systems in the room. Sump pumps are now operating and level in the SWIS bay is lowering. All safety related systems are operable except for the 'A' Diesel Area Panel Room Supply Fan, which is cleared and tagged for scheduled maintenance. Licensee will notify the NRC Resident Inspector and has notified the states of New Jersey and Delaware and the local township.
At 0736 EDT the licensee terminated the Unusual Event. The SWIS sump pumps are working as designed using the sump pump level switch. The sump pumps are running and lowering level (approximately 0.75 inches remains on the SWIS floor). The licensee has notified the State of New Jersey and Delaware Emergency Response organizations and will be notifying the NRC Resident Inspector. Notified R1DO (Powell), NRR EO (Thorp), IRD MOC (McDermott), DHS (McKentry), and FEMA (Sweetser). |
| Where | |
|---|---|
Hope Creek  New Jersey (NRC Region 1) | |
| Reporting | |
| Emergency class: | Unusual Event |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration | |
| Time - Person (Reporting Time:+-3.23 h-0.135 days <br />-0.0192 weeks <br />-0.00442 months <br />) | |
| Opened: | Glen Canady 05:33 Aug 28, 2008 |
| NRC Officer: | John Knoke |
| Last Updated: | Aug 28, 2008 |
| 44442 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 531012017-11-30T21:57:00030 November 2017 21:57:00
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