ENS Event | |
|---|---|
02:00 Mar 6, 2020 | |
| Title | Planned Plant Computer Outage for System Upgrade |
| Event Description | On March 05, 2020, at 2100 EST, the site commenced a planned upgrade of the main plant computer system (MPCS). During this upgrade, the normal computer data will not be available to the emergency response facilities, but compensatory capabilities will be in place. The scheduled duration for the MPCS upgrade is 96 hours0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br />. Since the compensatory measures will be in place in excess of 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, this condition is being reported pursuant to 10 CFR 50.72(b)(3)(xiii).
The NRC Resident Inspector has been notified. |
| Where | |
|---|---|
Seabrook  New Hampshire (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+-4.77 h-0.199 days <br />-0.0284 weeks <br />-0.00653 months <br />) | |
| Opened: | Eric Mallett 21:14 Mar 5, 2020 |
| NRC Officer: | Andrew Waugh |
| Last Updated: | Mar 5, 2020 |
| 54569 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 545692020-03-06T02:00:0006 March 2020 02:00:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Plant Computer Outage for System Upgrade ENS 519322016-05-16T07:00:00016 May 2016 07:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Seismic Monitoring System Out of Service for Planned Upgrade ENS 483632012-10-01T08:24:0001 October 2012 08:24:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Response Data System Is Unavailable for Service ENS 479172012-05-11T09:15:00011 May 2012 09:15:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Brief Loss of the Emergency Notification System Phone ENS 456642010-01-27T12:30:00027 January 2010 12:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Electrical Power Temporarily Removed from the Emergency Operations Facility for Maintenance ENS 452292009-07-27T11:52:00027 July 2009 11:52:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Removed from Service for Upgrades 2020-03-06T02:00:00 | |