ENS 48247: Difference between revisions
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| event date = 08/29/2012 08:57 CDT | | event date = 08/29/2012 08:57 CDT | ||
| last update date = 08/31/2012 | | last update date = 08/31/2012 | ||
| title = Partial Loss | | title = Partial Loss of Plant Radiation Monitoring System Remote Readout | ||
| event text = On August 29, 2012, power was removed from SCADA B of the Radiation Monitoring System (RMS) to perform a planned system modification. During this period, data for most Unit 2 radiation monitors will not be electronically available in the emergency response facilities and will not be supplied to the Emergency Response Data System (ERDS), if activated. System alarms and data displays will still be available to the plant operators in the Control Room. The expected duration of RMS remote data partial inoperability is approximately 72 hours. The loss of Unit 2 remote readout capability requires compensatory measures to be used for the acquisition of radiological data in the emergency response facilities. These compensatory measures have been communicated to the emergency response organization. Therefore, it is expected that appropriate assessment of plant conditions, notifications, and communications could still be made, if required, during the time that the portions of the RMS are 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. An update message will be provided when the RMS is restored. | | event text = On August 29, 2012, power was removed from SCADA B of the Radiation Monitoring System (RMS) to perform a planned system modification. During this period, data for most Unit 2 radiation monitors will not be electronically available in the emergency response facilities and will not be supplied to the Emergency Response Data System (ERDS), if activated. System alarms and data displays will still be available to the plant operators in the Control Room. The expected duration of RMS remote data partial inoperability is approximately 72 hours. The loss of Unit 2 remote readout capability requires compensatory measures to be used for the acquisition of radiological data in the emergency response facilities. These compensatory measures have been communicated to the emergency response organization. Therefore, it is expected that appropriate assessment of plant conditions, notifications, and communications could still be made, if required, during the time that the portions of the RMS are 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. An update message will be provided when the RMS is restored. | ||
The NRC Resident and Region IV EP Inspectors have been notified. | The NRC Resident and Region IV EP Inspectors have been notified. | ||
Latest revision as of 22:03, 1 March 2018
| Where | |
|---|---|
Comanche Peak  Texas (NRC Region 4) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+-3.95 h-0.165 days <br />-0.0235 weeks <br />-0.00541 months <br />) | |
| Opened: | D. W. Mcgaughey 10:00 Aug 29, 2012 |
| NRC Officer: | John Knoke |
| Last Updated: | Aug 31, 2012 |
| 48247 - NRC Website
| |
| Radiation Monitors Required for Event Assessment Out of Service for Planned Maintenance [Table view] | ||