ENS 41765: Difference between revisions
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| event date = 06/10/2005 13:51 EDT | | event date = 06/10/2005 13:51 EDT | ||
| last update date = 06/10/2005 | | last update date = 06/10/2005 | ||
| title = Loss | | title = Loss of Offsite Bus Due to a Lighting Strike with Actuation of Emergency Diesel Generator | ||
| event text = At 1351 hours, a lightning strike resulted in a loss of Offsite Circuit #751. Loss of Circuit #751 resulted in a momentary loss of Bus 16 until its re-energization by Emergency Diesel Generator B. Safeguards Bus 17 remained de-energized as its Supply Breaker from Emergency Diesel Generator B failed to close as expected. | | event text = At 1351 hours, a lightning strike resulted in a loss of Offsite Circuit #751. Loss of Circuit #751 resulted in a momentary loss of Bus 16 until its re-energization by Emergency Diesel Generator B. Safeguards Bus 17 remained de-energized as its Supply Breaker from Emergency Diesel Generator B failed to close as expected. | ||
Additionally, while responding per applicable Abnormal Procedures, Service Water Pump A was manually started. Service Water Pump A tripped approximately 2 minutes later with a report of smoke and sparks emanating from the Service Water Pump A motor. Due to the loss of Safeguards Bus 17 and Service Water Pump A, the plant ran on Service Water Pump C only. Emergency Diesel Generator B was transferred to alternate cooling during the event. | Additionally, while responding per applicable Abnormal Procedures, Service Water Pump A was manually started. Service Water Pump A tripped approximately 2 minutes later with a report of smoke and sparks emanating from the Service Water Pump A motor. Due to the loss of Safeguards Bus 17 and Service Water Pump A, the plant ran on Service Water Pump C only. Emergency Diesel Generator B was transferred to alternate cooling during the event. | ||
Latest revision as of 21:20, 1 March 2018
| Where | |
|---|---|
Ginna  New York (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(iv)(A), System Actuation | |
| Time - Person (Reporting Time:+3.07 h0.128 days <br />0.0183 weeks <br />0.00421 months <br />) | |
| Opened: | Daniel W. Dean 20:55 Jun 10, 2005 |
| NRC Officer: | John Knoke |
| Last Updated: | Jun 10, 2005 |
| 41765 - NRC Website
| |