Clinton (USA)

Map of Clinton

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950 MW BWR constructed by GE in operation since 1987.

Facilities in Clinton

plantreactor typconstruction startoperation startshut down
Clinton-1BWR19751987
1996-09-06

On this day operators began shutting down the unit because of leakage into the drywell, The leakage has been increasing for several weeks. Shutdown was started, when it reach 25 lit/min. exceeding the limit for further operation. Operators placed the plant in single loop opeartion and took other actions to decrease the unidentified leakage. During the course of these actions the the coolant pump seal ruptured and caused a rapid increase in the leakage rate to 140 lit/min.

1995-03-01

AN UNUSUAL EVENT WAS DECLARED DUE TO A FIRE ON MAIN FEED PUMP TURBINE. ALTHOUGH THE FIRE BRIGADE RESPONDED IMMEDIATELY AND PUT OUT THE FIRE, SUBSEQUENT REFLASHES EXCEEDED 10 MINUTES AND AN UNUSUAL EVENT WAS DECLARED. THE LICENSEE PLANS TO TERMINATE THE UNUSAL EVENT WHEN THERE IS NO CHANCE OF ANOTHER REFLASH. MEMBERS OF THE FIRE BRIGADE WILL REMAIN IN THE MAIN FEED PUMP ROOM UNTIL THERE IS NO RISK OF FURTHER FIRE. ALL ECCSs ARE OPERABLE.

1990-12-18

Two primary containment penetrations were discovered to have their lines terminate at a level in the suppression pool which could not have guaranteed they remained sealed in an accident. Cause: construction fault.

1990-03-07

Inspection identified 4 solenoid valves that could have been overpressurized by failure of the associated air regulator. This could have rendered the associated air valves and the fuel pool cooling inoperable.

1990-02-12

Seat of a drywell purge containment isolation valve was not sealing because the original preservative had not been removed and collected a large amount of dirt.

1990-01-24

Service water flow through 27 components degraded, caused by inadequate testing.

1988-12-19

3 leak detection systems inoperable due o a blown fuse.

1988-11-11

Fire in main transformer caused scram.

1988-11-10

Metal disk installed in the exhaust flow path of the EDG poviding power for HPCS could have caused excessive back pressure to damage the DG and loss of HPCS.

1988-06-13

HPCS unkwowingly inoperable for 25 days due to failure of 1 of the HPCS room fans. Inability to start RCIC and ECCS' second train was also out at time. Personnel unaware of equipment status.

1988-03-14

Design error prevented EDG´s ventilation fans from tripping on a fire signal. A fire would have not been exhausted.