10 février 2015
Cette absence de support a été découverte sur deux évents supérieurs de tuyauteries. La branche froide de l’injection était, de fait, inutilisable. Suite à cette découverte, les vannes d’isolement de l’aération ont été fermées.
Type : PWR - Puissance : 2 300 MWth - Première divergence : 06/1973
Available in english only.
Event Number : 50807
Facility : TURKEY POINT - State : FL
Unit : [4] - RX Type : W-3-LP
Event Date : 02/10/2015 - Event Time : 17:50
Emergency Class : NON EMERGENCY 10 CFR Section : 50.72(b)(3)(ii)(B) - UNANALYZED CONDITION
Initial PWR : 100 % Current PWR : 100 %
Event Text
HIGH HEAD SAFETY INJECTION INOPERABLE DUE TO MISSING PIPING SUPPORT
"This is a non-emergency 8 hour report in accordance with 10 CFR 50.72(b)(3)(ii)(B).
"At 1750 [EST] hours on 2/10/15, Unit 4 entered Technical Specification 3.0.3 due to missing tubing supports identified for two separate high point vent lines. This condition is unanalyzed and potentially rendered the cold leg High Head Safety Injection flow path inoperable. Upon discovery, the vent line root isolation valves were closed and Technical Specification 3.0.3 was exited at 1805. Investigation has been initiated to determine cause."
The licensee has notified the NRC Resident Inspector.
https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2015/20150212en.html#en50807
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