Instruments related to the completion of the anti

2022-08-08
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On the 14th, Tokyo Electric Power Company announced that the anti-proliferation cover project covering the reactor building of unit 1 of Fukushima Daiichi nuclear power plant has been completed, and the pipes that filter the air inside the cover and discharge it outward have also started trial operation

in order to prevent the spread of radiation in unit 1 of Fukushima Daiichi nuclear power plant, which was seriously damaged by hydrogen explosion, TEPCO began to build an anti-proliferation cover for the building where the reactor of the unit is located in June this year. First, a steel frame is built outside the reactor building, and then polyester fiber is laid on the steel frame. After partial wear of the bearing on the 1 side of the experimental machine, the whole anti-proliferation cover is 55m high, 47m long and 42m wide, which can completely cover the whole reactor building

in order to improve the working environment inside the hood forming temperature: 290 (3) 50 ℃, TEPCO is an ideal cooling medium. The company has installed a filter that can absorb radiation in the exhaust pipe of the anti-proliferation hood, which can reduce the radiation concentration in the air inside the hood to about one tenth of the original. After that, TEPCO will also build concrete roofs and walls outside the building where the reactor of unit 1 is located to prevent the spread of radiation. In addition, since the No. 3 and No. 4 units of the nuclear power plant were also damaged by hydrogen explosion, TEPCO will build the same non-proliferation facilities for the buildings where the reactors of the two units are located

in addition, Tokyo Electric Power Company recently used robots to investigate the building where the reactor of unit 1 is located. It was found that the maximum radiation dose in some areas reached 3000 to 4700 mSv per hour. Experts speculate that this is caused by the radioactive sewage under the building where the reactor is located

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