3 juillet 2018
L’arrêt du réacteur se serait passé sans problème. La chaleur résiduelle du coeur est évacuée par les soupapes de décharge à l’atmosphère et le condenseur via les lignes de vapeur principales. La cause du niveau trop haut dans le générateur de vapeur est en cours de recherche.
Type : PWR - Puissance : 3 625 MWth - Première divergence : 09/1987
Available in english only.
Event Number : 53484
Facility : VOGTLE - State : GA
Unit : [1] - RX Type : [1] W-4-LP
Event Date : 07/03/2018 - Event Time : 00:00 [EDT]
Emergency Class : NON EMERGENCY 10 CFR Section : 50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL 50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
Initial PWR : 100 % Current PWR : 0 %
Event Text
MANUAL REACTOR TRIP DUE TO HIGH STEAM GENERATOR WATER LEVEL
"At 0954 [EDT] on July 3, 2018, with Unit 1 in Mode 1 at 100 percent power, the reactor was manually tripped due to high steam generator water level. The trip was not complex, with all systems responding normally. Operations stabilized the plant in Mode 3. Decay heat is being removed through the main steam lines through the steam dumps and into the condenser.
"The expected actuation of the Auxiliary Feedwater System (an engineered safety feature) is being reported as an eight hour report under 10 CFR 50.72 (b)(3)(iv)(A).
"Unit 2 was not affected.
"There was no impact to the health and safety of the public or plant personnel.
"The NRC Resident Inspectors have been notified."
All control rods inserted and Unit 1 is in an electrical shutdown lineup. The cause of the high steam generator water level transient is being investigated.
https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2018/20180704en.html
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