ENS 44903

v t e ENS Event
21:45 Mar 12, 2009
Title	Offsite Notification for Low Intake Water Level Due to an Ice Jam
Event Description	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. The minimum level for operating the circulating water pumps is 978'. A break in the ice jam is not expected to adversely affect the plant. The licensee has notified the NRC Resident Inspector.

ENS 44903 +/-
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
v • d • e

v t e Emergency Notification System
Fort Calhoun with 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release
WEEKMONTHYEAR		Offsite Notification - Press Release for a Fire in Containment 2022-01-05T15:09:00 [Table view]
[ENS list for Fort Calhoun]

Navigation menu