24 juin 2016
La fuite est survenue sur le système d’échange de chaleur du circuit de refroidissement de l’eau : Component Cooling Water (CCW) system heat exchangers. L’arrêt est du réacteur en mode 3 est imposé dans les 6 h.
Type : PWR - Puissance : 3216 MWTh - Première divergence 05 1973
Available in english only
Event Number : 52039
Facility : INDIAN POINT
State : NY - Unit : [2] - RX Type : [2] W-4-LP
Event Date : 06/24/2016 Event Time : 04:00 [EDT]
Emergency Class : NON EMERGENCY 10 CFR Section : 50.72(b)(2)(i) - PLANT S/D REQD BY TS
Initial PWR : 93 % Current Power : 0 %
Event Text
TS REQUIRED SHUTDOWN DUE TO LEAKING SERVICE WATER WELD ON CCW HX
"At 0400 (EDT) on June 24, 2016, Indian Point Unit 2 initiated actions to commence reactor shutdown to comply with Technical Specification (TS) LCO 3.7.7, Condition B. TS LCO 3.7.7, Condition A had been entered at 0230 on June 21, 2016 in order to repair a leaking weld on the 20 inch service water pipe to nozzle weld on the 21 Component Cooling Water Heat Exchanger (CCW HX). Condition A allows 72 hours to restore the inoperable CCW train to service or Condition B is entered which requires the plant to be in Mode 3 in 6 hours and Mode 4 in 12 hours.
"The initiation of a nuclear plant shutdown required by TS requires a 4-hour report in accordance with 50.72(b)(2)(i) which is being made by this notification."
The licensee notified the New York Independent System Operator and the New York Public Service Commission.
The licensee notified the NRC Resident Inspector.
https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2016/20160627en.html