ENS 42299: Difference between revisions
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| event date = 02/01/2006 18:55 CST | | event date = 02/01/2006 18:55 CST | ||
| last update date = 02/02/2006 | | last update date = 02/02/2006 | ||
| title = Loss | | title = Loss of Site External Communications | ||
| event text = At approximately 18:55 CST, the site lost external communications. At 1937 CST, Duane Arnold declared an Unusual Event due to loss of communications to most offsite agencies. Communications with the county were operating via microwave however, other external communications were not working. The site believed that the loss was due to a "single microwave tower malfunction." The county was contacted directly and other offsite communications (including this event) were being made using a cell phone. The Headquarters Operation Officer was able to contact the Control Room using a commercial phone number. The plant is currently in day 2 of a 14 day RCIC LCO. | | event text = At approximately 18:55 CST, the site lost external communications. At 1937 CST, Duane Arnold declared an Unusual Event due to loss of communications to most offsite agencies. Communications with the county were operating via microwave however, other external communications were not working. The site believed that the loss was due to a "single microwave tower malfunction." The county was contacted directly and other offsite communications (including this event) were being made using a cell phone. The Headquarters Operation Officer was able to contact the Control Room using a commercial phone number. The plant is currently in day 2 of a 14 day RCIC LCO. | ||
At 22:35 EST, the site verified that they now have intermittent communications using commercial phone lines. The licensee will not exit the Unusual Event until they have restored communications and know the reason for losing communications. | At 22:35 EST, the site verified that they now have intermittent communications using commercial phone lines. The licensee will not exit the Unusual Event until they have restored communications and know the reason for losing communications. | ||
Latest revision as of 21:19, 1 March 2018
| Where | |
|---|---|
Duane Arnold  Iowa (NRC Region 3) | |
| Reporting | |
| Emergency class: | Unusual Event |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+-3.37 h-0.14 days <br />-0.0201 weeks <br />-0.00462 months <br />) | |
| Opened: | William Clark 21:33 Feb 1, 2006 |
| NRC Officer: | Mark Abramovitz |
| Last Updated: | Feb 2, 2006 |
| 42299 - NRC Website
| |
Duane Arnold with 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |