ENS 43680: Difference between revisions
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| event date = 10/01/2007 22:20 CDT | | event date = 10/01/2007 22:20 CDT | ||
| last update date = 10/03/2007 | | last update date = 10/03/2007 | ||
| title = Loss | | title = Loss of Exhaust Ventilation Stack Flow and Accident Radiation Monitors Due to Plant Data Multiplexer Failure | ||
| event text = On 10/01/2007 the failure of a plant data multiplexer (MUX) resulted in the loss of Control Room indication of all plant building exhaust ventilation stack flows and accident radiation monitors. The stack flows and accident radiation monitors are normally accessed by the plants Emergency Response Organization offsite dose calculation application but cannot be accessed at this time. Alternate means of offsite dose projections are available. The duration of the plant data MUX outage is currently unknown. Follow-up notification will be made after restoration of the plant data MUX. | | event text = On 10/01/2007 the failure of a plant data multiplexer (MUX) resulted in the loss of Control Room indication of all plant building exhaust ventilation stack flows and accident radiation monitors. The stack flows and accident radiation monitors are normally accessed by the plants Emergency Response Organization offsite dose calculation application but cannot be accessed at this time. Alternate means of offsite dose projections are available. The duration of the plant data MUX outage is currently unknown. Follow-up notification will be made after restoration of the plant data MUX. | ||
The cause of the failure is being investigated. | The cause of the failure is being investigated. | ||
Latest revision as of 22:15, 1 March 2018
| Where | |
|---|---|
Grand Gulf  Mississippi (NRC Region 4) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+1.13 h0.0471 days <br />0.00673 weeks <br />0.00155 months <br />) | |
| Opened: | Hardy Farris 04:28 Oct 2, 2007 |
| NRC Officer: | Jeff Rotton |
| Last Updated: | Oct 3, 2007 |
| 43680 - NRC Website
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