16 août 2017
Un déclenchement du disjoncteur d’alimentation électrique en 345 000 volts est à l’origine du problème qui a également entrainé une perte d’alimentation électrique de l’unité n°1 durant 1 h 28 mn. Ces évènements ont entrainé une réduction de l’efficacité du centre de soutien technique.
Type : Fukushima 1 (BWR Mark 1) - Puissance : 3 514 MWth - Première divergence : 9 / 1973 -
Available in englih only
Event Number : 52909
Facility : PEACH BOTTOM - State : PA Unit : [2] RX Type : [2] GE-4
Event Date : 08/16/2017 - Event Time : 10:39 [EDT]
10 CFR Section : 50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
Initial PWR Current PWR 2 100 % 100 % 3 100 % 100 %
Event Text LOSS OF POWER TO TECHNICAL SUPPORT CENTER
"On 8/16/2017, at 1039 [EDT], an un-planned trip of the Peach Bottom Station Blackout Transformer 34.5 kV feeder breaker 1005 and a loss of the 191-00 line occurred causing a loss of power to Unit 1 and the TSC. Power was not restored to the TSC or the ventilation system within 1 hour. Power was subsequently restored to the TSC at 1207 hours [EDT] and the ventilation system was restored to available.
"This report is being submitted pursuant to 10CFR50.72(b)(3)(xiii) as a Major Loss of Emergency Preparedness Capabilities due to a reduction in the effectiveness of the Onsite Technical Support Center (TSC).
"The NRC Resident Inspector has been informed of this notification."
https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2017/20170817en.html
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