Japanese full recognition to Meltdown at all reactors of Fukushima-1

 Japanese full recognition to all reactors at Meltdown "Fukushima-1"

Complete melting of nuclear fuel (Meltdown) could occur in all three reactors, the Japanese nuclear power plant "Fukushima-1" was damaged after the March earthquake and tsunami, said Tuesday the adviser of the National Agency for Nuclear and Industrial Safety Hidehiko Nishiyama.

Last week, the experts of the operator station of Tokyo Electric Power (TEPCO) reported a melting nuclear fuel rods in the first reactor. Determine what happened at Unit, managed after it was installed ventilation equipment, partially clear the air of radioactive particles and allowed to enter the art and install the gauges.

According to experts, fuel melting occurred within 16 hours after the March 11 earthquake. Due to damage to the reactor system largely remained without cooling, the ITAR-TASS news agency.

Speaking to reporters on Tuesday, adviser of the National Agency for Nuclear and Industrial Safety Hidehiko Nishiyama, the second and third reactors a long time also providing water and fuel were not cooled.

As suggested by the expert, probably molten mass now accumulated on the bottom of the reactor. According to experts, the melted fuel is also burned a small hole in the bottom of the first power and now there follows radioactive water.

 

Accurate data on the status of the second and third reactors yet

As stressed by Nishiyama, however until safe to say about the state of the second and third reactors can not, because, in contrast to the first unit is not able to obtain accurate measurements. Enter the premises, where the reactors, TEPCO employees can not because of high radiation levels.

On Monday, the likelihood of the situation in the "Fukushima-1" on the worst-case scenario is also confirmed adviser to Prime Minister Naoto Kan Goshi Hosono, reports The Japan Today. According to the expert, as the company, after the March 11 earthquake more than six hours was not able to cool the reactors, the fuel could melt Units.

As reported by Japanese media on Tuesday, the experts will try to get a second unit to measure radiation levels and assess the situation in the building.

Plan to eliminate the consequences of the accident have to change

Also today, the company TEPCO is going to release an updated action plan to stabilize the plant. At the same time, the government will present its program to overcome the nuclear crisis. Earlier it was reported that for the first phase of the plan will need 6 to 9 months.

According to Goshi Hosono, no choice but to continue to pump water into the space between the reactor vessel and the outer protective steel shell, no. Another important task is to decontamination of radioactive water that leaks from the damaged first reactor. Experts say about a possible leak of contaminated water in the second and third reactors.

A recent study by employees of TEPCO, has shown that the level of radiation in the first reactor is currently 1000-2000 millisieverts per hour. Recall that the Japanese authorities have established permissible dose for the average person to 1 millisievert per year. For workers NPP it is 100 millisieverts per year. For emergency workers at the plant "Fukushima-1" special government resolution was raised to 250 millisieverts a year.

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