ENS 42802
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ENS Event | |
|---|---|
14:30 Aug 25, 2006 | |
| Title | Emergency Response Data System and Safety Parameter Display System Will Be Unavailable |
| Event Description | The BVPS Unit 2 Plant Computer System (PCS) will be taken out of service for approximately 5 weeks (8/25/06 to 9/26/06) to implement a planned modification. The current PCS is being replaced and a computer outage is required to allow for the installation of a new PCS. During this time period the Emergency Response Data System (ERDS) and Safety Parameter Display System (SPDS) will not be available at BVPS Unit 2. ERDS and SPDS parameters will be monitored by control board indications and a temporary computer system (with limited analog inputs). Compensatory actions have been developed, which include a revised emergency implementing procedure specifically addressing temporarily unavailable indications and having an extra Operations Communicator respond to the Control Room during any potential Unit 2 emergency to facilitate data transfer while ERDS/SPDS is out of service. Work on replacing the PCS and returning ERDS/SPDS will be ongoing continuously until complete.
This is an 8-hour reportable event per 10 CFR50.72(b)(3)(xiii) Major Loss of Assessment Capability. The operation of BVPS Unit 1 and Unit 2 plant systems will not be affected due to this planned action. BVPS Unit 1 ERDS and SPDS will not be affected by these modifications. The NRC resident inspector has been notified.
Work on replacing the PCS and returning ERD/SPDS remains continuously ongoing. However, minor hindrances have caused the scheduled completion of this function to now be October 1, 2006. Previously described compensatory actions remain in effect. The licensee has notified the NRC resident inspector. Notified R1DO (Chris Hott). |
| Where | |
|---|---|
| Beaver Valley Pennsylvania (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+-3.9 h-0.163 days <br />-0.0232 weeks <br />-0.00534 months <br />) | |
| Opened: | Ken Tiefenthal 10:36 Aug 25, 2006 |
| NRC Officer: | Mike Ripley |
| Last Updated: | Sep 26, 2006 |
| 42802 - NRC Website
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Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
Beaver Valley with 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
WEEKMONTHYEARENS 539242019-03-11T12:51:00011 March 2019 12:51:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Planned Communication System Maintenance ENS 510642015-05-11T20:29:00011 May 2015 20:29:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Power to Digital Radiation Monitoring System ENS 508952015-03-14T21:08:00014 March 2015 21:08:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Digital Radiation Monitoring System Failed ENS 506272014-11-19T14:43:00019 November 2014 14:43:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Eal Required Gaseous Waste Effluent Radiation Monitors Removed from Service for Planned Maintenance ENS 504172014-08-29T13:32:00029 August 2014 13:32:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Digital Radiation Monitoring System Operating Intermittently ENS 497162014-01-11T21:05:00011 January 2014 21:05:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Digital Radiation Monitoring System Communication Failure ENS 491582013-06-29T16:14:00029 June 2013 16:14:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Digital Radiation Monitoring System Operating Intermittently ENS 475132011-12-05T14:45:0005 December 2011 14:45:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Unavailability of Emergency Response Data System (Erds) for Scheduled Upgrade ENS 462322010-09-07T14:43:0007 September 2010 14:43:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Plant In-Process Computer Oos for Maintenance ENS 456832010-02-06T14:28:0006 February 2010 14:28:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Siren Capability Due to Adverse Weather Conditions ENS 450232009-04-26T19:45:00026 April 2009 19:45:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Erds and Plant Computer Unavailable During Maintenance on Computer Room Cooling ENS 444872008-09-15T12:00:00015 September 2008 12:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Emergency Sirens Due to Power Outages Caused by High Winds ENS 434582007-06-29T04:14:00029 June 2007 04:14:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Radiation Monitoring Information to Erds and Spds Will Be Unavailable During Planned Upgrade to the System. ENS 430302006-12-03T23:04:0003 December 2006 23:04:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Non-Functional Safety Parameter Display System ENS 428022006-08-25T14:30:00025 August 2006 14:30:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Emergency Response Data System and Safety Parameter Display System Will Be Unavailable 2019-03-11T12:51:00 | |
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