ENS Event | |
|---|---|
23:57 Aug 24, 2007 | |
| Title | Partial Loss of Process Computer Parameters to Erds |
| Event Description | A portion of the Palisades Plant Process Computer (PPC) including a significant number or Emergency Response Data System (ERDS) trended input became inoperable due to a host computer failure. The cause of the host computer failure is unknown.
Necessary redundant control room parameters exist and are functioning. Palisades is currently in no associated Technical Specification LCOs. Repair of the host computer will be prudently pursued. NRC notification of repair completion will occur. The licensee notified the NRC Resident Inspector.
The licensee restored the host computer at 1757 on 8/26/07 so it is now providing accurate data. The licensee notified the NRC Resident Inspector. Notified R3DO (Lara). |
| Where | |
|---|---|
Palisades  Michigan (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+1.5 h0.0625 days <br />0.00893 weeks <br />0.00205 months <br />) | |
| Opened: | Mike Mlynarek 01:27 Aug 25, 2007 |
| NRC Officer: | Jeff Rotton |
| Last Updated: | Aug 26, 2007 |
| 43594 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 565012023-05-02T19:00:0002 May 2023 19:00:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Communications ENS 499242014-03-17T18:18:00017 March 2014 18:18:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Displayed Meteorological Data Potentially Inaccurate ENS 447452008-12-29T11:15:00029 December 2008 11:15:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Ens and Commercial Phone Service ENS 435942007-08-24T23:57:00024 August 2007 23:57:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Partial Loss of Process Computer Parameters to Erds ENS 420532005-10-12T21:09:00012 October 2005 21:09:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Partial Loss of Plant Process Computer 2023-05-02T19:00:00 | |