A meltdown. In layman's terms, it's called "a catastrophe."
Meltdown, also it's not just the fuel rods that melt, structural supports, control rods, etc. can melt when this happens.
In a 'meltdown', the nuclear fuel rods will overheat and melt, not explode. It is the build-up of pressure within the containment vessel that can cause an explosion.
Fuel elements or fuel rods
When fuel rods in a nuclear power plant generate too much heat, they start to melt.
The nuclear fuel is found in the fuel rods. These fuel rods are formed into fuel bundles called fuel assemblies, and together they make up the reactor core.
Meltdown, but this is an extreme fault which is avoided, and has happened very rarely, like at Chernobyl.
nuclear meltdown .-. '
Known as fuel rods, these are hollow metal rods that contain the uranium fuel for a nuclear reactor.
fuel rods and control rods
None whatever, unless they live in or are visiting Japan
It is just called fuel meltdown. It very rarely happens, and ideally it would never happen. In the US there has been only one such incident, at Three Mile Island, 1979.
You have a misapprehension there, it is uranium oxide that is used in fuel rods, not fossil fuel