This was a steam/water leak in a steam generator, probably brought on by inadequate chemistry control in the secondary water side. Faced with the prospect of the cost of replacing the steam generators, the owners decided to shut the plant permanently, and it has been partly decommissioned with all the fuel removed.
A nuclear accident is the unintended release of nuclear radiation into the environment, such as damage to a nuclear reactor or to a nuclear weapon (plane crash carrying nuclear bombs, etc). The two basic forms of nuclear weapons are fission and fusion weapons.
An Ark reactor as currently describe in comic is very much like a Nuclear Fuel Cell. Possibly convert energy from Nuclear reaction to power. Possibly a plasma nuclear fusion reactor. I believe in the future it could be made. See the link and compare the similarity of fusion reactor and Ark reactor.
It is a nuclear reactor without reflector, consisting only from fuel and moderator.
Water is used in nuclear REACTORS both as the heat energy carrier and as a coolant to prevent overheating. Proper cooling is required or the reactor will overheat, causing a meltdown. This is not the same as a nuclear explosion since all that will happen is the extreme heat will melt or destroy the reactor or its containment, but due to the design of reactors it is impossible to have a nuclear explosion similar to nuclear weaponry in a reactor. A notable reactor meltdown was Chernobyl where the nuclear reaction was allowed to generate too much excess heat and the heat caused melting of reactor components and eventually a steam explosion (water vapour explosion) due to overheating. The main concern for a reactor meltdown is not the immediate destruction of everything in a certain radius but the spraying of highly radioactive materials found only in a reactor over a large radius since this radioactive waste cannot be cleaned effectively and will render the surroundings uninhabitable for decades.
It did explode, but this was due to a surge in steam pressure which blew off the top of the reactor, it was not a nuclear explosion as in a nuclear weapon.
the reactor accident at the chernobyl nuclear power plant.
No, nothing happened like melting of people in Chernobyl nuclear reactor accident.
There are many ways a nuclear accident may occur, however most nuclear power plant accident occur due to problem in an reactor.
Meltdown is a term that describes the melting of a nuclear-reactor core as a result of a nuclear accident
Meltdown is a term that describes the melting of a nuclear-reactor core as a result of a nuclear accident
what event caused many Americans to worry about nuclear power
The term "Broken Arrow" is used to indicate a nuclear accident involving a nuclear weapon that does't pose the threat indicated. The term "excursion" (as in nuclear excursion) or "criticality accident" is applied to a nuclear reactor or nuclear material accident, respectively.
The Chernobyl Nuclear Power Plant underwent a level 7 event - the worst accident so far. The plant, located in the Soviet Union near Pripyat in Ukraine lost its number four reactor on 26 April 1986. A link to the Wikipedia article on the accident is provided.
The #4 reactor is the reactor at the Chernobyl Nuclear Power Plant (Pripyat, Ukraine) that exploded on April 26, 1986. It is still the worst nuclear accident to ever take place anywhere.
The answer your probably looking for is 'melt down' however a melt down is a very rare event and the worst form of 'nuclear accident'.
A nuclear meltdown is an informal term for a severe nuclear reactor accident that results in core damage from overheating. A meltdown occurs when the heat generated by a nuclear reactor exceeds the heat removed by the cooling systems to the point which at least one nuclear fuel plate exceeds its melting point.
Thankfully there haven't been many nuclear accidents, however when they do happen they can be severe the worst nuclear accident/disaster was the explosion of reactor No.4 at the Chernobyl Nuclear power plant in 1986 on April the 26th.