ENS 42703
ENS Event | |
|---|---|
04:00 Jul 12, 2006 | |
| Title | Loss of Offsite Power at a Decommissioned Facility |
| Event Description | The licensee reported a loss of ENS and commercial telephone lines due to a loss of power to the phone switch located offsite from the facility. The call was provided as a courtesy notification and the licensee indicated that cell phone and satellite phone communication were still available. These methods of communication were tested and verified to be working satisfactorily. During the initial notification, it was not made clear to the NRC Operations Center that the facility had lost all offsite power and was operating on backup propane generators. The licensee stated that there were no operability problems onsite and that power was expected to be returned to the phone system within approximately 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.
Update calls were placed to the licensee by the Headquarters Operations Officer at 1930 EDT and again at 2200 EDT to determine phone status. At the 2200 EDT call, it became clear that the site had also experienced a loss of offsite power. The loss of power was due to a tree that had fallen on a power line away from the site and that the licensee did not have any information on when it would be restored. The licensee stated that all onsite power requirements were being met by a backup propane generator and all facility systems (other than the phones) were operable. The licensee stated that the loss of offsite power was not reportable and the loss of the ENS and commercial lines was reportable as information only. The licensee still did not have information on when the power would be restored. R1DO (Meyer), NMSS EO (Ruland), R1 (Miller) were provided the updated information on the offsite power loss at the site when this information was clarified by the licensee.
The licensee reports that power has been restored to the site and both ENS and commercial phones lines are operating properly. R1DO (Meyer), NMSS EO (Ruland), R1 (Miller) notified.
The licensee reexamined the circumstances about this event when it was originally reported and decided to reclassify the original event as a 10 CFR 50.72 (b)(3)(xiii) Loss of Communications / Assessment / Response Capability. The heading information of this report was updated to reflect the licensee's reclassification. R1DO (Meyer), NMSS EO (Ruland) notified. |
| Where | |
|---|---|
| Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png Connecticut (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+13.55 h0.565 days <br />0.0807 weeks <br />0.0186 months <br />) | |
| Opened: | Ralph Cox 17:33 Jul 12, 2006 |
| NRC Officer: | Bill Huffman |
| Last Updated: | Jul 13, 2006 |
| 42703 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Not Critical |
| Scram | No |
| Before | Decommissioned (0 %) |
| After | Decommissioned (0 %) |
Haddam NeckFile:Connecticut Yankee Atomic Power Co icon.png with 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
WEEKMONTHYEARENS 472302011-09-01T13:06:0001 September 2011 13:06:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of All Land Line Communications for Greater than an Hour ENS 427032006-07-12T04:00:00012 July 2006 04:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Offsite Power at a Decommissioned Facility 2011-09-01T13:06:00 | |