ENS 43475
ENS Event | |
|---|---|
15:03 Jul 7, 2007 | |
| Title | Loss of Safety Parameter Display System (Spds) Due to Planned Modification |
| Event Description | At 11:03 hours EST, on July 7, 2007, the Plant Information Computer System (PICS) was removed from service to perform a planned modification to install and test a Standard Digital I&C System Platform (DICSP) infrastructure and to update the network configuration of PICS. The expected duration of PICS inoperability is approximately 24 to 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />. PICS provides monitoring and communications capability for plant data systems including the Emergency Response Data System (ERDS), Safety Parameter Display System (SPDS), Plant Process Computer System (PPCS), Emergency Response Computer Logger (ERCO-1), Meteorological Data link system and the Inadequate Core Cooling Monitor (ICCM). The loss of PICS requires alternate methods, as described in plant procedures, to be used for the above described functions. Therefore, appropriate assessment of plant conditions, notifications and communications can still be made, if required, during the time that PICS is inoperable. This report is being made in accordance with 10 CFR 50.72(b)(3)(xiii) which is any event that results in a major loss of emergency assessment capability, offsite response capability or offsite communications capability. As previously stated, alternate means remain available to assess plant conditions, make notifications and accomplish required communications, as necessary. An additional notification will be provided when PICS operability is restored.
The NRC Resident Inspector has been notified.
Engineering change (EC) of PICS continues. Testing of the installed modifications is now in progress. As stated above, alternate means remain available to assess plant conditions, make notifications, and accomplish required communications, as necessary. Testing of the EC and EC turnover is expected to be completed on 07/09/2007. The plant computers, including SPDS, are presently running providing plant data thus are available but not operable. The licensee notified the NRC Resident Inspector. Notified R2DO(Henson)
Crystal River Unit 3 initially reported removal of its Plant computer systems from service for planned modification on 07/07/07 at 11:51 and made the required notification in accordance with 10 CFR 50.72(b)(3)(xiii). The Engineering change associated with the Safety Parameter Display System (SPDS) and the Plant Information Computer System (PICS) has been completed and the systems are currently running providing data. Modification testing has been completed and the systems are considered operable. The compensatory measures put in place to assure appropriate assessment of plant conditions, notifications and communications have been terminated. The licensee notified the NRC Resident Inspector. Notified R2DO (Hopper) |
| Where | |
|---|---|
Crystal River  Florida (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+-3.2 h-0.133 days <br />-0.019 weeks <br />-0.00438 months <br />) | |
| Opened: | Richard Sweeney 11:51 Jul 7, 2007 |
| NRC Officer: | John Mackinnon |
| Last Updated: | Jul 11, 2007 |
| 43475 - NRC Website
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Unit 3 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 485562012-12-04T17:00:0004 December 2012 17:00:00
[Table view]10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Temporary Emergency Operating Facility Established for Planned Outage ENS 483912012-10-09T14:57:0009 October 2012 14:57:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Assessment Capability at the Emergency Operations Facility ENS 470562011-07-16T09:00:00016 July 2011 09:00:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Technical Support Center Non-Functional Due to Planned Maintenance ENS 434752007-07-07T15:03:0007 July 2007 15:03:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Loss of Safety Parameter Display System (Spds) Due to Planned Modification ENS 421222005-11-06T14:35:0006 November 2005 14:35:00 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness Temporary Loss of Offsite Notification Sirens 2012-12-04T17:00:00 | |