I don't have inside information, but this fast restart seems to be reckless to me. We will see as time goes by? Do they double or nothing philosophy once a plant gets into trouble...under intense NRC special inspection scrutiny and the state is trying to shut them down.What about iodine production and xenon burnout?
Indian Point 3 returns to service
BUCHANAN – Indian Point’s Unit 3 nuclear power plant was returned to service Tuesday afternoon, generating electricity less than 24 hours after the unit automatically shut down following the failure of an electrical switch, ro breaker, in a switchyard outside the plant.
The switchyard is located across the street from Indian Point and receives electricity generated by the plant before distributing it out to the electrical grid.
The failure of the breaking led to Indian Points Unit 3 shutting down as a protective measure.
All equipment operated appropriately. There was no release of radioactivity and no threat to the safety of workers or the public.
Unit 2 continues to operate at full power.So this is what caused it. It is too bad, this didn't eliminate from Entergy.
Indian Point: Balloon triggered reactor shutdown
BUCHANAN – A balloon that got tangled in electrical wires led to a sequence of events that caused a shutdown of a reactor at the Indian Point nuclear power plant Monday night, regulatory officials said Tuesday. The shutdown occurred at 7:20 p.m., after Consolidated Edison asked Indian Point operators to open an electrical breaker so that workers could safely remove a large Mylar balloon that got tangled in wires leading to the Millwood substation south of the plant. Soon after that breaker was opened, a second breaker opened, resulting an an automatic shutdown of the reactor, according to Neil Sheehan, spokesman for the Nuclear Regulatory Commission. The shutdown occurred without any complications, with all safety systems functioning the way they were supposed to, he said. The reactor went back online at 11:45 a.m. Tuesday, according to Jerry Nappi, a spokesman for Entergy.
ALBANY—One of the two nuclear reactors at the Indian Point nuclear center shut down again on Monday, just weeks after it returned to service following a transformer fire that drew the concern of Gov. Andrew Cuomo and other elected leaders.
When a transformer at the plant caught fire on May 9, Cuomo rushed to the scene and reiterated his long-standing concerns about the plant. Shortly after that, a top state energy official acknowledged that the administration was actively working to pressure the plant to shut down.
The cause of the transformer fire, which sent a dark plume into the sky and frightened nearby residents, is still under investigation. Unit 3 returned to service on May 24.
Power Reactor Event Number: 51156 Facility: INDIAN POINT
Region: 1 State: NY
Unit: [ ] [3] [ ]
RX Type: [2] W-4-LP,[3] W-4-LP
NRC Notified By: LUKE HEDGES
HQ OPS Officer: DONALD NORWOOD Notification Date: 06/15/2015
Notification Time: 20:15 [ET]
Event Date: 06/15/2015
Event Time: 19:20 [EDT]
Last Update Date: 06/15/2015 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 Person (Organization):
BRICE BICKETT (R1DO)
Event Text
Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode 3 A/R Y 100 Power Operation 0 Hot Standby
REACTOR TRIP DUE TO TURBINE TRIP
"On June 15, 2015 at 1920 EDT, Indian Point Unit 3 received a Turbine trip which directly led to a Reactor trip. Operators entered [plant procedure] E-0, Reactor Trip or Safety Injection. All control rods fully inserted. All safety systems responded as expected. The Auxiliary Feedwater (AFW) system actuated as expected. Offsite power and electrical lineups are normal. No primary or secondary code safety valves lifted. All MSIVs are open and the Main Condensers are being used as the heat sink. The Reactor is in Mode 3 and stable. Unit 2 was unaffected and remains at 100% power. Preliminary investigation determined that Breaker Number 1 in the Ring Bus was intentionally opened [by plant personnel on switching orders from the district operator] due to a problem on W93 [output feeder from Ring Bus]. Subsequently Breaker #3 went open and caused a Turbine/Reactor trip of the Unit."
The licensee notified the NRC Resident Inspector.
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