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TEPCO restarts water-circulation cooling
The operator of the troubled Fukushima Daiichi nuclear power plant has restarted its new water-recycling cooling system after repairing leaky pipes.
The Tokyo Electric Power Company, or TEPCO, activated a pump for the water injection system on Tuesday afternoon, after checking pipe connections and taking measures to prevent a sharp rise in water pressure.
The Nuclear and Industrial Safety Agency says the system is working steadily.
TEPCO was forced to halt the system on Monday after only about 90 minutes of operation due to a water leak. The firm said the leak lasted for 2 minutes at most, and that about one ton of water seeped out.
TEPCO said water burst from a weak connection, and that the firm had not taken originally planned measures to prevent a sharp rise in water pressure.
The system is designed to pump highly radioactive water out of reactor buildings, decontaminate it and circulate it back into the reactors as coolant.
TEPCO says the system is the key to cooling the reactors while decreasing the amount of contaminated water threatening to overflow.
Tuesday, June 28, 2011 19:15 +0900 (JST)
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