Wednesday, November 11, 2015

More Millstone Junk?

Update 11/11

Reported from Nov 9.

So the same type oil leak on the same pump knocked off both Millstone 1 & 2 nuclear plants. Can it get any worst. 
Dominion's Millstone-2 nuclear power unit shuts due to coolant pump leak

Washington (Platts)--11 Nov 2015 527 pm EST/2227 GMT

Dominion's Millstone-2 nuclear power unit in Waterford, Connecticut, was shut at 1 pm EST (1800 GMT) Tuesday "to address an oil leak from a reactor coolant pump," plant spokesman Kenneth Holt said in an email Wednesday. 
Holt said he cannot comment on when the 918-MW unit is expected to return to service.
The oil leak is "a different leak" from the one that required Millstone-2 to shut Sunday, though it is from the same coolant pump, Holt said, without providing details.
The 1,276-MW Millstone-3 reactor was operating at 100% of capacity early Wednesday morning, the US Nuclear Regulatory Commission said in its daily reactor status report. 
Was the fire in the diesel generator leaking oil also? Got a rework problem?
Power ReactorEvent Number: 51521
Facility: MILLSTONE
Region: 1 State: CT
Unit: [ ] [2] [ ]
RX Type: [1] GE-3,[2] CE,[3] W-4-LP
NRC Notified By: BARRETT NICHOLS
HQ OPS Officer: DONALD NORWOOD
Notification Date: 11/08/2015
Notification Time: 02:55 [ET]
Event Date: 11/08/2015
Event Time: 02:30 [EST]
Last Update Date: 11/08/2015
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL
Person (Organization):
JOHN ROGGE (R1DO)

UnitSCRAM CodeRX CRITInitial PWRInitial RX ModeCurrent PWRCurrent RX Mode
2M/RY15Power Operation0Hot Standby
Event Text
MANUAL REACTOR TRIP DUE TO REACTOR COOLANT PUMP OIL LEAK

During power ascension following refueling outage, a decreasing oil level in the 'C' Reactor Coolant Pump was noted. When the oil level reached 69 percent, with the reactor at approximately 56 percent rated thermal power, per plant procedure, a rapid downpower was initiated which brought the plant to approximately 15 percent power and a manual reactor trip was initiated at that point. The reactor trip was uncomplicated and all plant equipment responded as expected.

The licensee notified the NRC Resident Inspector.

Millstone Power Station Terminates Alert Caused by Fire
By Published: Nov 4, 2015 3:26 p.m. ET 
HARTFORD, Conn., Nov. 4, 2015 /PRNewswire/ -- An Alert at the Millstone Power Station has been terminated at 2:46 p.m. without any injuries or release of radiation.
The Alert was declared at 11:33 a.m. as the result of a fire in a backup diesel generator for Unit 3. The fire quickly burned out. Millstone fire control personnel responded to the fire. The station did not request offsite assistance. 


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