It was on 26 April 1986 at 01:23:45 a.m. (Moscow time) that the number four reactor at the plant exploded. A link can be found below.
First of all, the accident at Chernobyl was many many many times worse than Three Mile Island. At Chernobyl the reactor was blown apart by a steam pressure surge, so that a lot of very active material was ejected from the reactor, air ingress caused the graphite to burn, and much of the fuel melted. As there was no secondary containment, radioactive material from the fuel spread all over the site and its surroundings. This is just about the worst thing that can happen to a reactor. I think 47 total died quickly, all operators or fire and rescue people, from radiation sickness. There were also 7 child thyroid cancer deaths. As far as the long term effects are concerned, I believe they were exaggerated in early predictions, but of course development of cancers can take many years, so the true consequences won't be known for some years yet, and one must be careful to separate extra cancers from what would occur in any large population, in assessing this. At Three Mile Island there was a partial meltdown due to loss of coolant, and some activity was released, but much less than at Chernobyl. Assessment of health effects showed no effects on the local population. The reactor of course was a complete write off and a dead loss to the owners. See links given below
You are probably thinking of the Three Mile Island plant reactor melt down in 1979
1986, I don't recall the exact date but there are numerous entries in Wikipedia and elsewhere on this incident.
The bombs dropped in Japan were designed to produce a large nuclear explosion which produced heat and blast waves. At Chernobyl an operating reactor lifted its top off due to a surge in pressure, and this flung out radioactive debris, not as a result of a nuclear explosion but due to mechanical forces. There was approx. 400 times the amount of radiation released from Chernobyl than there was from the two bombs dropped on Japan.
The worst nuclear accident in history happened at the Chernobyl Nuclear Power Plant in Chernobyl, Ukraine, on 26 April 1986. An explosion and fire released massive amounts of radioactive particles into the atmosphere. The deadly radiation spread over Western USSR and much of Europe. The effort to contain the contamination cost 18 billion rubles (~18 billions USD.) The accident resulted in 31 deaths at the site of the explosion. Even today, long-terms affects such as deformities and cancer are still an issue.
1986
At Chernobyl there was a steam explosion which blew off the top of the reactor followed by a fire due to the graphite moderator burning in air, and a huge amount of radioactive material was discharged, including fission products from the fuel. I'm not sure which fast reactor you are referring to, but certainly the incident did not involve massive catastrophic failure of the reactor vessel, or it would have become a world incident as Chernobyl did.
Chernobyl started from an inherently unstable design, it's considered a breeder reactor, really good at making weapons grade plutonium but functionally unstable. The actual incident occurred during testing of the reactor to see how far it could be pushed.
The incident occurred near Chernobyl in the Ukraine At that time the Ukraine was part of the Soviet Union.
1986, the same year as the Challenger Space Shuttle explosion.
The Chernobyl Reactor is still active.
this was rote by amandaTHE Chernobyl Disaster was caused by a reactor.
The incident changed safety precautions throughout the world because it showed the world what could happen if a reactor did explode and what the effects would have been and the effects were devastating.
the reactor accident at the chernobyl nuclear power plant.
The Three Mile Island incident in 1979 was a partial meltdown resulting from equipment malfunctions and operator errors, with no immediate fatalities and limited off-site impact. In contrast, the Chernobyl disaster in 1986 was a full-scale meltdown caused by a flawed reactor design and operator errors, resulting in immediate deaths, widespread radioactive contamination, and long-term health and environmental consequences.
No, nothing happened like melting of people in Chernobyl nuclear reactor accident.
chernobyl