ENS Event | |
|---|---|
03:00 Oct 25, 2005 | |
| Title | |
| Event Description | At 2300 on October 24, 2005, both unit 3 and unit 4 start up transformers were declared inoperable and Tech Spec 3.8.1.1.e action statements were entered. With both units being energized from their respective start-up transformers, the high voltage limit is 241.5kV in accordance with 0-ONOP-004.6, Degraded Switchyard Voltage. System Operations reported switchyard voltage at 243.5 kV and 242.5 kV for unit 3 and unit 4 respectfully. System Operations was requested to lower switchyard voltage to within limits. At 0015 on October 25, 2005, switchyard voltage being lowered to within the switchyard limits and both start-up transformers were declared operable. The high switchyard voltage is due to hurricane Wilma's impact on the Florida service area that has [led] to low system load with cooler weather conditions.
The NRC Resident Inspector has been notified. |
| Where | |
|---|---|
Turkey Point  Florida (NRC Region 2) | |
| Reporting | |
| Other Unspec Reqmnt | |
| Time - Person (Reporting Time:+-0.73 h-0.0304 days <br />-0.00435 weeks <br />-9.99954e-4 months <br />) | |
| Opened: | Michael Murphy 02:16 Oct 25, 2005 |
| NRC Officer: | Joe O'Hara |
| Last Updated: | Oct 25, 2005 |
| 42074 - NRC Website
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Unit 3 | |
|---|---|
| Reactor critical | Not Critical |
| Scram | No |
| Before | Hot Standby (0 %) |
| After | Hot Standby (0 %) |
Unit 4 | |
|---|---|
| Reactor critical | Not Critical |
| Scram | No |
| Before | Hot Standby (0 %) |
| After | Hot Standby (0 %) |
WEEKMONTHYEARENS 527912017-06-06T21:51:0006 June 2017 21:51:00
[Table view]Other Unspec Reqmnt Both Standby Steam Generator Feed Pumps Out of Service for Pre-Planned Maintenance ENS 515512015-11-19T04:33:00019 November 2015 04:33:00 Other Unspec Reqmnt After-The-Fact Notification of Unusual Event ENS 424002006-03-09T10:55:0009 March 2006 10:55:00 Other Unspec Reqmnt Technical Specification 3.8.1.1 Entry Due to Loss of Unit 3 Startup Transformer ENS 420742005-10-25T03:00:00025 October 2005 03:00:00 Other Unspec Reqmnt Inoperable Start-Up Transformers; High Switchyard Voltage Due to Hurricane Wilma 2017-06-06T21:51:00 | |