ENS 53775: Difference between revisions
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| event text = On 12/4/2018 at 1340 [PST], Columbia entered a planned evolution to replace the seismic monitoring system. Use of the Modified Mercalli Intensity Scale has been implemented as a compensatory measure per station procedures. The expected duration of the replacement activity will exceed 72 hours, therefore, this is being reported as a major loss of emergency assessment capability in accordance with regulation 10 CFR 50.72(b)(3)(xiii). | | event text = On 12/4/2018 at 1340 [PST], Columbia entered a planned evolution to replace the seismic monitoring system. Use of the Modified Mercalli Intensity Scale has been implemented as a compensatory measure per station procedures. The expected duration of the replacement activity will exceed 72 hours, therefore, this is being reported as a major loss of emergency assessment capability in accordance with regulation 10 CFR 50.72(b)(3)(xiii). | ||
Compensatory measures will remain in place until the seismic system replacement has been completed. | Compensatory measures will remain in place until the seismic system replacement has been completed. | ||
The NRC Resident Inspector has been notified. | The NRC Resident Inspector has been notified. | ||
| URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2018/20181205en.html#en53775 | | URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2018/20181205en.html#en53775 | ||
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Latest revision as of 23:58, 23 February 2020
| Where | |
|---|---|
Columbia Generating Station  Washington (NRC Region 4) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(xiii), Loss of Emergency Preparedness | |
| Time - Person (Reporting Time:+9.2 h0.383 days <br />0.0548 weeks <br />0.0126 months <br />) | |
| Opened: | David Porter 17:12 Dec 4, 2018 |
| NRC Officer: | Bethany Cecere |
| Last Updated: | Dec 4, 2018 |
| 53775 - NRC Website
| |