The workers entered the reactor building of the first machine of Fukushima Daiichi nuclear power plant to set up the purifier.

The workers entered the reactor building of the first machine of Fukushima Daiichi nuclear power plant to set up the purifier on May 5.

It is the first time that the workers entered the building since March 12th when the hydrogen detonation occurred.

To purify the air polluted by the radioactive substance in the building, the workers set up the hose of the purifier.

Because the numerical value of doses of radiation is very high, the workers should shoulder the air gas cylinder putting on protective wear.

Only ten-minute worker can be on the site.