ENS 46199
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ENS Event | |
|---|---|
13:00 Aug 23, 2010 | |
| Title | Loss of Erds Capability |
| Event Description | This report is being made per 10 CFR 50.72(b)(3)(xiii) regarding a loss of offsite communication capability in that Oyster Creek Nuclear Generating Station would not have been able to establish a connection with the NRC Emergency Response Data System (ERDS) within one hour if the need had arisen. This condition was discovered at 0900 hours0.0104 days <br />0.25 hours <br />0.00149 weeks <br />3.4245e-4 months <br /> on August 23, 2010, and existed from approximately 1900 hours0.022 days <br />0.528 hours <br />0.00314 weeks <br />7.2295e-4 months <br /> on August 20 until 1123 hours0.013 days <br />0.312 hours <br />0.00186 weeks <br />4.273015e-4 months <br /> on August 23, 2010.
Oyster Creek Nuclear Generating Station switched the plant telephone system from a digital system to a Voice Over IP system at approximately 1900 hours0.022 days <br />0.528 hours <br />0.00314 weeks <br />7.2295e-4 months <br /> on August 20, 2010. This change resulted in eliminating the requirement to dial the number '9' prior to dialing an outside line. The plant process computer (PPC) modem function program contained the NRC modem number preceded by the number '9' and when the changeover occurred the '9' was not deleted in the PPC program. This would have resulted in an error message if an attempt to connect with the NRC had been made. Information Technology (IT) estimates that it would have taken two hours to reprogram and establish the ERDS connection to the NRC. The ERDS data on the PPC was available but would have to have been transmitted to the NRC by an alternate method. 10 CFR 50.72(a)(4) requires one hour to activate the ERDS after declaring an emergency class of alert, site area, or general emergency. This situation was recognized at 0900 hours0.0104 days <br />0.25 hours <br />0.00149 weeks <br />3.4245e-4 months <br /> on August 23, 2010 by IT personnel. The ERDS connection capability was restored to fully functional status at 1123 hours0.013 days <br />0.312 hours <br />0.00186 weeks <br />4.273015e-4 months <br /> on August 23, 2010. The licensee has notified the NRC Resident Inspector. |
| Where | |
|---|---|
| Oyster Creek New Jersey (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+1.1 h0.0458 days <br />0.00655 weeks <br />0.00151 months <br />) | |
| Opened: | Dennis Moore 14:06 Aug 23, 2010 |
| NRC Officer: | Howie Crouch |
| Last Updated: | Aug 23, 2010 |
| 46199 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
Oyster Creek with 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
WEEKMONTHYEARENS 539772019-04-04T15:55:0004 April 2019 15:55:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation Non-Functional ENS 528612017-07-14T21:24:00014 July 2017 21:24:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of the Technical Support Center Ventilation System ENS 526742017-04-12T19:30:00012 April 2017 19:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of the Technical Support Center Ventilation System ENS 524652016-12-29T07:50:00029 December 2016 07:50:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Technical Suppport Center Ventilation System ENS 516772016-01-23T10:51:00023 January 2016 10:51:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Power to the Site Emergency Building ENS 511082015-06-01T11:00:0001 June 2015 11:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service for Planned Maintenance ENS 502202014-06-23T13:00:00023 June 2014 13:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Communications Due to Planned Maintenance ENS 498692014-03-04T10:02:0004 March 2014 10:02:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service for Planned Maintenance ENS 488612013-03-28T12:04:00028 March 2013 12:04:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Ventilation Out of Service for Planned Maintenance ENS 486572013-01-08T10:05:0008 January 2013 10:05:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Technical Support Center Ventilation Maintenance ENS 484952012-11-08T15:20:0008 November 2012 15:20:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Planning Zone Sirens ENS 484502012-10-29T19:00:00029 October 2012 19:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of 21 Emergency Notification Sirens ENS 481022012-07-13T16:00:00013 July 2012 16:00:00 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 Intermittent Signal Interference with Emergency Sirens ENS 480242012-06-14T10:07:00014 June 2012 10:07:00 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 Technical Support Center Out of Service and Offsite Notification Due to Loss of Power to Site Emergency Building ENS 477462012-03-15T12:30:00015 March 2012 12:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Out of Service Due to Planned Maintenance ENS 461992010-08-23T13:00:00023 August 2010 13:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Erds Capability ENS 459222010-05-13T09:00:00013 May 2010 09:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Partial Loss of Erds and Spds Due to Planned Maintenance ENS 458242010-04-08T04:00:0008 April 2010 04:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Stack Sample Line Separated at Fitting ENS 457662010-03-14T14:27:00014 March 2010 14:27:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Power to Emergency Operations Facility ENS 453862009-09-28T11:54:00028 September 2009 11:54:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Plant Process Computer Outage Resulting in a Loss of Erds and Spds ENS 450332009-04-30T17:06:00030 April 2009 17:06:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Response Data System (Erds) Unavailable for Greater than 1 Hour ENS 445262008-09-29T13:18:00029 September 2008 13:18:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Internal Phone Systems ENS 443342008-07-03T09:40:0003 July 2008 09:40:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Commercial Telephone and Dedicated Ep Landlines ENS 421532005-11-18T04:00:00018 November 2005 04:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss and Recovery of Communications 2019-04-04T15:55:00 | |
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