ENS 44903
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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. |
| 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
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 556902022-01-05T15:09:0005 January 2022 15:09:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Onsite Fire ENS 555662021-11-08T16:15:0008 November 2021 16:15:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification ENS 553062021-06-15T17:30:00015 June 2021 17:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification ENS 549072020-09-23T20:28:00023 September 2020 20:28:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release | Offsite Notification - Press Release for a Fire in Containment ENS 538312019-01-16T06:00:00016 January 2019 06:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Fire Requiring Local Fire Department Response ENS 531252017-12-18T13:10:00018 December 2017 13:10:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Inadvertent Emergency Siren Activation During Testing ENS 477742012-03-27T14:50:00027 March 2012 14:50:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Inadvertent Siren Actuation ENS 476942012-02-23T15:00:00023 February 2012 15:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to an Intake Structure Oil Spill ENS 470672011-07-18T17:15:00018 July 2011 17:15:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification of a Raw Sewage Discharge ENS 470012011-06-30T19:23:00030 June 2011 19:23:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Person Being Evacuated ENS 469892011-06-26T15:45:00026 June 2011 15:45:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Petroleum Release to the Missouri River ENS 469532011-06-13T17:00:00013 June 2011 17:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Sewage System Release ENS 468752011-05-24T03:00:00024 May 2011 03:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to an Oil Spill ENS 468452011-05-12T13:15:00012 May 2011 13:15:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 26.719, FFD Reporting requirements Contract Employee Admitted to Using Illegal Substance ENS 467952011-04-27T23:00:00027 April 2011 23:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Sirens Intermittently Inoperable Due to Upgrading ENS 459242010-05-13T18:32:00013 May 2010 18:32:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification ENS 456142010-01-07T19:00:0007 January 2010 19:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to the Discovery of Contaminated Dollar Bills ENS 452512009-08-09T09:00:0009 August 2009 09:00:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release State of Nebraska Notified Due to Minor Sewage Spill to the Missouri River ENS 449032009-03-12T21:45:00012 March 2009 21:45:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification for Low Intake Water Level Due to an Ice Jam ENS 448332009-02-06T00:28:0006 February 2009 00:28:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification to Local Fire Departments for Assistance ENS 446552008-11-13T06:20:00013 November 2008 06:20:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Oil Spill from Circulating Water Pump Oil Sight Glass Line ENS 435752007-08-17T15:53:00017 August 2007 15:53:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Performed Due to External Environmental Event ENS 433552007-05-10T20:30:00010 May 2007 20:30:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Due to Elevated Tritium Levels ENS 433472007-05-05T17:10:0005 May 2007 17:10:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Made to the State of Nebraska Due to a Small Oil Spill ENS 428052006-08-26T14:45:00026 August 2006 14:45:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Electrician Flash Burned in Switchgear Room ENS 426082006-05-30T07:45:00030 May 2006 07:45:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Made Due to Inadvertent Emergency Siren Activation ENS 419162005-08-12T20:50:00012 August 2005 20:50:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification Made Due to Emergency Siren Actuation ENS 410472004-09-17T11:24:00017 September 2004 11:24:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release Offsite Notification to Army Corps of Engineers 2022-01-05T15:09:00 [Table view] | |
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