ENS 48020
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ENS Event | |
|---|---|
04:00 Jun 13, 2012 | |
| Title | Safety Parameters Display System Out of Service |
| Event Description | At 1032 [EDT], on June 12, 2012, the Unit 2 Safety Parameter Display System (SPDS) system ceased valid data transmission to the control room computer terminals. Remote terminals were unaffected. The loss was discovered on the morning of 6/13/12 and the connection was restored at 0945 [EDT] on 6/13/12. This was a duration of greater than 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> which was not discovered until after the fact. This condition affected unit 2 only. ERDS was unaffected.
Since the Unit 2 SPDS computer system was unavailable for greater than 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, this is considered a Loss of Emergency Assessment Capability and reportable under 10CFR50.72(b)(3)(xiii). The licensee notified the NRC Resident Inspector. |
| Where | |
|---|---|
Susquehanna  Pennsylvania (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+8.73 h0.364 days <br />0.052 weeks <br />0.012 months <br />) | |
| Opened: | Dave Walsh 12:44 Jun 13, 2012 |
| NRC Officer: | Mark Abramovitz |
| Last Updated: | Jun 13, 2012 |
| 48020 - NRC Website
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Unit 2 | |
|---|---|
| Reactor critical | Not Critical |
| Scram | No |
| Before | Cold Shutdown (0 %) |
| After | Cold Shutdown (0 %) |
WEEKMONTHYEARENS 497532014-01-21T18:40:00021 January 2014 18:40:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Vent Stack Radiation Monitors Out of Service ENS 482112012-08-20T15:06:00020 August 2012 15:06:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Response Data System ENS 480202012-06-13T04:00:00013 June 2012 04:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Safety Parameters Display System Out of Service ENS 478202012-04-11T01:48:00011 April 2012 01:48:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Spds and Erds Removed from Service Due to Planned Maintenance ENS 473722011-10-24T21:15:00024 October 2011 21:15:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Operation Facility Out of Service Due to Planned Maintenance Activity ENS 453362009-09-09T13:30:0009 September 2009 13:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Sirens Out of Service ENS 452802009-08-20T20:43:00020 August 2009 20:43:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Plant Integrated Computer System Resulting in Loss of Erds and Spds ENS 452702009-08-17T16:10:00017 August 2009 16:10:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Response Data System and Safety Parameter Display System Due to Computer Problems ENS 445132008-09-23T11:30:00023 September 2008 11:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Operating Facility Unavailable ENS 443422008-07-10T19:38:00010 July 2008 19:38:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Assessment Capabilities Due to Plant Computer Failure ENS 440872008-03-22T14:35:00022 March 2008 14:35:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Spds/Erds Computer System Greater than 8 Hours ENS 440702008-03-17T15:50:00017 March 2008 15:50:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Safety Parameter Display System (Spds) and Emergency Response Data System (Erds) Unavailable Due to Planned Maintenance ENS 432392007-03-15T03:00:00015 March 2007 03:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Outage of Spds and Erds ENS 432282007-03-10T05:30:00010 March 2007 05:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Maintenance for Unit 2 Spds and Erds System ENS 424232006-03-15T10:57:00015 March 2006 10:57:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Assessment Capability - Safety Parameter Display System ENS 422902006-01-27T13:00:00027 January 2006 13:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Unit 2 Emergency Response Data System (Erds) Modem Failed ENS 421832005-12-02T05:49:0002 December 2005 05:49:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Safety Parameter Display System (Spds) Failure on Unit Two ENS 420812005-10-26T14:20:00026 October 2005 14:20:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Power at the Emergency Operations Facility ENS 416402005-04-26T11:31:00026 April 2005 11:31:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Spds (Safety Parameter Display System) Is Down for Planned Maintenance ENS 416312005-04-25T02:30:00025 April 2005 02:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Spds (Safety Parameter Display System) Is Down for Planned Maintenance ENS 410292004-09-09T08:24:0009 September 2004 08:24:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Assessment Capability ENS 409562004-08-15T00:45:00015 August 2004 00:45:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Safety Parameter Display System ENS 409482004-08-13T12:00:00013 August 2004 12:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of the Safety Parameter Display System (Spds) for Greater than 8 Hours ENS 405732004-03-07T03:10:0007 March 2004 03:10:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Spds Will Be De-Energized for More than 8 Hours Due to Refueling Outage Activities ENS 401822003-09-19T20:00:00019 September 2003 20:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Sirens Due to Storm 2014-01-21T18:40:00 | |
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