ENS 48430: Difference between revisions
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| event date = 10/22/2012 06:42 CDT | | event date = 10/22/2012 06:42 CDT | ||
| last update date = 10/22/2012 | | last update date = 10/22/2012 | ||
| title = Partial Loss | | title = Partial Loss of Emergency Assessment Capability | ||
| event text = At 0642 [CDT] on 10/22/2012 a failure of power supply RMA-ES-53B was indicated by multiple area radiation alarms in the Control Room. This failure results in the loss of ability to remotely measure and quantify radiation levels in multiple area in the Reactor Building, Turbine Building and Main Control Room. This power supply serves 10 of 30 area radiation monitors located throughout the plant. The remaining 20 monitors remain fully functional. These radiation monitors do not cause entry to any Technical Specification conditions or required actions. | | event text = At 0642 [CDT] on 10/22/2012 a failure of power supply RMA-ES-53B was indicated by multiple area radiation alarms in the Control Room. This failure results in the loss of ability to remotely measure and quantify radiation levels in multiple area in the Reactor Building, Turbine Building and Main Control Room. This power supply serves 10 of 30 area radiation monitors located throughout the plant. The remaining 20 monitors remain fully functional. These radiation monitors do not cause entry to any Technical Specification conditions or required actions. | ||
The loss of ability to monitor and quantify radiological conditions in multiple area of the plant represents a major loss of emergency assessment capability per 10CFR50.72(b)(3)(xiii). These radiation monitors are used for EAL determinations. As specified by station procedures compensatory monitoring has been implemented by use of surveys and portable monitoring devices. | The loss of ability to monitor and quantify radiological conditions in multiple area of the plant represents a major loss of emergency assessment capability per 10CFR50.72(b)(3)(xiii). These radiation monitors are used for EAL determinations. As specified by station procedures compensatory monitoring has been implemented by use of surveys and portable monitoring devices. | ||
Latest revision as of 21:02, 1 March 2018
| Where | |
|---|---|
Cooper  Nebraska (NRC Region 4) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+1.77 h0.0738 days <br />0.0105 weeks <br />0.00242 months <br />) | |
| Opened: | Roy Giles 13:28 Oct 22, 2012 |
| NRC Officer: | Steve Sandin |
| Last Updated: | Oct 22, 2012 |
| 48430 - NRC Website
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