Yes, reactor number 3 is really in critical at Fukushima.
The dangerous condition that can occur in a nuclear reactor and due to overheating is a nuclear meltdown.
Construction for the Fukushima Daiichi plant began on July 25, 1967. The first reactor to go on line was Unit 1, commissioned on March 26, 1971. At the time of the meltdowns, the plant had been in operation for almost 40 years.
The dangerous condition we know as a meltdown is one wherein the reactor core becomes too hot and fuel rods or plates melt.
Meltdown
Yes, reactor number 3 is really in critical at Fukushima.
People in North America would be safe if a Reactor 3 meltdown at Fukushima.
There were six reactors at Fukushima Daiichi. At the time of the earthquake, three of these, reactors 1, 2, and 3, were operating. Reactor 4 was shut down for refueling, and reactors 5 and 6 were in cold shutdown.
The dangerous condition that can occur in a nuclear reactor and due to overheating is a nuclear meltdown.
Fukushima
The fuel rods are of uranium dioxide, with the uranium enriched to about 5% U-235
Seconds from Disaster - 2004 Fukushima 5-4 was released on: USA: 11 March 2012
The dangerous condition we know as a meltdown is one wherein the reactor core becomes too hot and fuel rods or plates melt.
Construction for the Fukushima Daiichi plant began on July 25, 1967. The first reactor to go on line was Unit 1, commissioned on March 26, 1971. At the time of the meltdowns, the plant had been in operation for almost 40 years.
Melting of the fuel
Meltdown
A safe reactor don't emit a significant or dangerous quantity of any radiation. But in the core of the reactor all the types of nuclear radiations are emitted.