Radiation at Fukushima 1 is extremely dangerous

Tokyo Electric Power Company (TEPCO) has reported the radioactivity measured in the 2nd reactor at Fukushima 1 power station to 73 svert / hour, which is extremely dangerous for living organisms and even robots With today's radiation resistance, it cannot work in such an environment.

>>>Fukushima plant reactor temperature rises

According to the Japan Times, March 29, people just exposed to 73 sievert radiation levels within 1 minute to cause vomiting, radioactive shock and 7-minute exposure to death. within 1 month later.

According to the current measurement standard, 1 sieververt is equivalent to 1000 millisievert and 73 sieverts will be 73,000 milliseconds. The normal exposure level of a normal person in a year is 1 millisecond, while the allowable exposure threshold for park operators at the Fukushima No.1 power plant is 100-250 milisievert / year.

Experts believe that such a high level of radioactivity is caused by the measured water level in the No. 2 reactor compartment shallow to only 60cm.

Previously, TEPCO predicted the amount of water in the reactor compartment to be about 3.5 - 4m. TEPCO thinks that there is a discrepancy because the pressure gauges used for predicting did not display correctly and concluded that 'fuel is cooling down, but not yet in the state of being able to take fuel out'.

Data from this survey will be used to predict the damage of reactors and the amount of polluted water. About 80 liters of contaminated water out of 120 tons of water leaked on May 26 has flowed into the sea.

TEPCO says that the radioactivity at the 2nd kiln is too high now to bring robots, scanners and other devices. TEPCO spokesman said that it is necessary to develop devices capable of working in ultra-high radiation environments.