Latest world news Too much radiation, the plant stopped water decontamination in Fukushima Tokyo. Parts of the system that absorb radioactive cesium must be changed much sooner than expected because of excessive levels of radiation, officials said Tokyo Electric Power (TEPCO).
The plant decontamination work began Friday at 8:00 p.m. (1100 GMT) and had to be stopped five hours later, the sources said.
The operator did not say when the plant cleanup would begin to operate.
The chain of decontamination of the plant is based on the methods of French nuclear group Areva and the US Kurion.
"We are still the cause" of excessive levels of radiation, said Junichi Matsumoto, in charge of nuclear operations in Tepco.
According to TEPCO, radioactive sludge is entered into the reprocessing system where treated water is more radioactive than Tepco originally thought.
Some 100,000 tons of highly radioactive water accumulated in the reactor building and turbine Fukushima Daiichi (No. 1) since the earthquake and tsunami of March 11.
These effluents prevent workers from entering the facility to re-cooling systems of nuclear fuel, damaged by a wave 14 feet high that swept through the plant.
The plant decontamination will be able to process 50 tons of waste per hour, or 1,200 tons per day by dividing the radioactivity by a factor of 1,000 to 10,000 times.
The company Tepco, who managed to stop the fusion fuel in the reactors watering day and night with sea water and fresh water, is still forced to inject about 500 tons of water Every day, some of which accumulates in plants.
Tepco can then reuse the decontaminated liquid in the cooling systems once they are restored.
But the operator will have to set another problem: the radioactive sludge from the treatment of decontamination.
April 17, TEPCO announced that it hoped to significantly reduce radiation leaks from the plant by July and sent to stabilize the reactor temperature below 100 degrees Celsius by January.
Meanwhile, the Japanese government found that nuclear power plants, arrested as a precaution after Fukushima, could resume work.
"I request that the plants are operating again," said Banri Kaieda, the Minister of Industry, recalling that additional security measures were implemented.
At present, only 17 of the 54 civilian nuclear reactors work.
Japan gets 30% of its energy from nuclear activity.
The plant decontamination work began Friday at 8:00 p.m. (1100 GMT) and had to be stopped five hours later, the sources said.
The operator did not say when the plant cleanup would begin to operate.
The chain of decontamination of the plant is based on the methods of French nuclear group Areva and the US Kurion.
"We are still the cause" of excessive levels of radiation, said Junichi Matsumoto, in charge of nuclear operations in Tepco.
According to TEPCO, radioactive sludge is entered into the reprocessing system where treated water is more radioactive than Tepco originally thought.
Some 100,000 tons of highly radioactive water accumulated in the reactor building and turbine Fukushima Daiichi (No. 1) since the earthquake and tsunami of March 11.
These effluents prevent workers from entering the facility to re-cooling systems of nuclear fuel, damaged by a wave 14 feet high that swept through the plant.
The plant decontamination will be able to process 50 tons of waste per hour, or 1,200 tons per day by dividing the radioactivity by a factor of 1,000 to 10,000 times.
The company Tepco, who managed to stop the fusion fuel in the reactors watering day and night with sea water and fresh water, is still forced to inject about 500 tons of water Every day, some of which accumulates in plants.
Tepco can then reuse the decontaminated liquid in the cooling systems once they are restored.
But the operator will have to set another problem: the radioactive sludge from the treatment of decontamination.
April 17, TEPCO announced that it hoped to significantly reduce radiation leaks from the plant by July and sent to stabilize the reactor temperature below 100 degrees Celsius by January.
Meanwhile, the Japanese government found that nuclear power plants, arrested as a precaution after Fukushima, could resume work.
"I request that the plants are operating again," said Banri Kaieda, the Minister of Industry, recalling that additional security measures were implemented.
At present, only 17 of the 54 civilian nuclear reactors work.
Japan gets 30% of its energy from nuclear activity.
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