Wednesday, May 18, 2011

Fukushima workers first enter the reactor 2

Tokyo. .- Employees of the company operating the plant in Fukushima, Tokyo Electric Power (TEPCO), today entered the reactor building 2 of the Japanese nuclear plant for the first time since the explosion of hydrogen recorded in days following the tsunami of 11 March. As reported by NHK, four workers remained inside the building about fifteen minutes to check radiation levels and conditions of the site.

As was the case when other technical TEPCO nearly two weeks ago came the building of the reactor 1, the workers wore protective suits and air tanks. According to TEPCO, were exposed to radiation levels of between 3.33 and 4.72 mSv, when Japanese law allows the emergency operators Fukushima receive up to 250 millisievert year.

A robot entered the reactor building 2 on April 18 to measure the radiation but finally could not do so due to high levels of humidity up to 90 percent. The earthquake and tsunami of March 11 left without cooling system to four reactors at the Fukushima plant, creating the worst nuclear accident since Chernobyl in 1986 and an unprecedented crisis.

On March 15 there was an explosion by combustion of hydrogen in the reactor building Fukushima 2, after two similar explosions recorded on the 12th on the campus of the Unit 1 and March 13 in the reactor 3. TEPCO workers trying since then to alleviate continuing problems after finding that the core of the reactor 1 underwent a merger and possibly the same thing happened with units 2 and 3.

In the reactor 3 are under way last night to transfer work highly contaminated water turbine building to a temporary container and the water level has dropped about 144 centimeters, according to TEPCO. The operator of Fukushima reviewed the plan yesterday to cool the plant and held in January 2012 as the deadline for closing the nuclear crisis, while deciding to vary the method of cooling the reactor by the high concentration of polluted water.

Will create a water circulation system to cool these units by pumping radioactive water that has previously been filtered and decontaminated. TEPCO's plan, supported by the Japanese government states that the plant is stabilized by January 2012 and that its reactors 1, 2 and 3 and the fuel pool Unit 4, already have a steady cooling in mid- July.

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