ENS 51403: Difference between revisions
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| event date = 09/16/2015 23:01 MST | | event date = 09/16/2015 23:01 MST | ||
| last update date = 09/17/2015 | | last update date = 09/17/2015 | ||
| title = Notification | | title = Notification of Unusual Event Due to Rapid Combustion of a Load Center Breaker | ||
| event text = The following event description is based on information currently available. If through subsequent reviews of this event, additional information is identified that is pertinent to this event, or alters the information being provided at this time a follow-up notification will be made via the ENS or under the reporting requirements of 10CFR50.73. | | event text = The following event description is based on information currently available. If through subsequent reviews of this event, additional information is identified that is pertinent to this event, or alters the information being provided at this time a follow-up notification will be made via the ENS or under the reporting requirements of 10CFR50.73. | ||
Non Class Load Center Breaker, 2ENGN-L04 failed, resulting an a visible observation of rapid combustion and resultant charring (burned area) of the breaker enclosure and housing. No physical deformation to the breaker housing or surrounding area has been identified. The rapid combustion self-extinguished immediately following the audible and visible combustion event. As a result, an Emergency Classification of HU2.2, EXPLOSION was declared due to the Load Center breaker failure and noise and visible indication observed in the field. | Non Class Load Center Breaker, 2ENGN-L04 failed, resulting an a visible observation of rapid combustion and resultant charring (burned area) of the breaker enclosure and housing. No physical deformation to the breaker housing or surrounding area has been identified. The rapid combustion self-extinguished immediately following the audible and visible combustion event. As a result, an Emergency Classification of HU2.2, EXPLOSION was declared due to the Load Center breaker failure and noise and visible indication observed in the field. | ||
Latest revision as of 21:46, 1 March 2018
| Where | |
|---|---|
Palo Verde  Arizona (NRC Region 4) | |
| Reporting | |
| Emergency class: | Unusual Event |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration | |
| Time - Person (Reporting Time:+-3.13 h-0.13 days <br />-0.0186 weeks <br />-0.00429 months <br />) | |
| Opened: | Robert Pierce 02:53 Sep 17, 2015 |
| NRC Officer: | Jeff Herrera |
| Last Updated: | Sep 17, 2015 |
| 51403 - NRC Website
| |