13 août 2014
Cette perte était due au fait que deux portes du bâtiment réacteur avaient été ouvertes simultanément. Le problème a duré 2 secondes durant lesquelles la fonction de contrôle de rejets de matières radioactives n’était plus assurée.
Type : Fukushima Daïchi 1 (BWR mark 1) - Puissance : 1 850 MWth - Première divergence : 09/1969
Availale in english only.
Event Number : 50363
Facility : NINE MILE POINT - State : NY - Unit : [1] - RX Type : [1] GE-2,
Event Date : 08/13/2014 - Event Time : 23:18
Emergency Class : NON EMERGENCY 10 CFR Section : 50.72(b)(3)(v)(C) - POT UNCNTRL RAD REL
Initial PWR : 100 % Current PWR : 100 %
Event Text
MOMENTARY LOSS OF SECONDARY CONTAINMENT
"Nine Mile Point Unit 1 (NMP1) had a momentary loss of Secondary Containment due to both Reactor Building Airlock doors being opened at the same time.
"At 2318 [EDT] on 8/13/2014, both Reactor Building Airlock doors at NMP1 were open simultaneously for less than 5 seconds. This results in a momentary loss of Secondary Containment operability (TS 3.4.3). The doors were closed and operability was restored.
"Secondary Containment being inoperable is an 8 hour notification per 10 CFR 50.72(b)(3)(v)(C), ’any event or condition that at the time of discovery could have prevented the fulfillment of the safety function of structures or systems that are needed to control the release of radioactive material.’
"The condition has been entered into the station’s corrective action program and the NRC Senior Resident Inspector was notified."
https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2014/20140815en.html#en50363
La boutique
Informez vous