ENS 44903: Difference between revisions
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| event date = 03/12/2009 16:45 CDT | | event date = 03/12/2009 16:45 CDT | ||
| last update date = 03/12/2009 | | last update date = 03/12/2009 | ||
| title = Offsite Notification | | title = Offsite Notification for Low Intake Water Level Due to an Ice Jam | ||
| event text = On March 12, 2009 at 1249 CDT, Fort Calhoun Station entered AOP-01, 'Acts of Nature' Section IV, 'Low River Water Level' due to lowering river level resulting from an ice jam upstream from the station. At that time, Missouri River level had lowered to 983 feet and posed a potential challenge to continued operation of the circulating water pumps. AOP-01 requires offsite notification of the U.S. Army Corps of Engineers to determine current river conditions, expected river levels for Fort Calhoun Station, and planned actions to alleviate the lowering levels. | | event text = On March 12, 2009 at 1249 CDT, Fort Calhoun Station entered AOP-01, 'Acts of Nature' Section IV, 'Low River Water Level' due to lowering river level resulting from an ice jam upstream from the station. At that time, Missouri River level had lowered to 983 feet and posed a potential challenge to continued operation of the circulating water pumps. AOP-01 requires offsite notification of the U.S. Army Corps of Engineers to determine current river conditions, expected river levels for Fort Calhoun Station, and planned actions to alleviate the lowering levels. | ||
Current river level at 1900 CDT was 982' 6" with the U.S. Army Corps of Engineers predicting the minimum river level to be 981' 6" feet. At this time, there has been no degradation in the circulating water pump or plant performance and compensatory measures are in place to monitor river level hourly. Barring degradation in circulator performance, additional actions will not be required if river level stays above the predicted minimum levels. | Current river level at 1900 CDT was 982' 6" with the U.S. Army Corps of Engineers predicting the minimum river level to be 981' 6" feet. At this time, there has been no degradation in the circulating water pump or plant performance and compensatory measures are in place to monitor river level hourly. Barring degradation in circulator performance, additional actions will not be required if river level stays above the predicted minimum levels. | ||
Latest revision as of 22:12, 1 March 2018
| Where | |
|---|---|
Ft Calhoun  Nebraska (NRC Region 4) | |
| Reporting | |
| 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | |
| Time - Person (Reporting Time:+-0.67 h-0.0279 days <br />-0.00399 weeks <br />-9.17766e-4 months <br />) | |
| Opened: | Michael Turner 21:05 Mar 12, 2009 |
| NRC Officer: | Mark Abramovitz |
| Last Updated: | Mar 12, 2009 |
| 44903 - NRC Website
| |
| Offsite Notification - Press Release for a Fire in Containment [Table view] | ||