Probably because they are produced in one place, and need to be used at another place.
Water is pumped around the fuel rods.
Known as fuel rods, these are hollow metal rods that contain the uranium fuel for a nuclear reactor.
The length of time we see fuel rods left in the core of a reactor will depend on the time it takes to deplete the nuclear fuel in those rods. Reactor design, specifically fuel rod design, and the rate at which the fuel is consumed during operation all have an effect. Typical life of the fuel in a nuclear reactor at a power station is several years.
Perhaps you mean the water that acts as moderator and fuel coolant
The fission happens in the fuel, which is usually in fuel rods inside the reactor. The rods are spaced at a particular distance apart and fill the reactor.
The nuclear fuel rods in the BWR design in Japan are about 12 feet long.
Water is pumped around the fuel rods.
fuel rods and control rods
The fuel rods used in a nuclear reactor are made from uranium 235(U-235).
No, but control rods do.
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.
Known as fuel rods, these are hollow metal rods that contain the uranium fuel for a nuclear reactor.
You have a misapprehension there, it is uranium oxide that is used in fuel rods, not fossil fuel
A few
No, Enriched Uranium-235 is used in a nuclear reactor as the fuel in the fuel rods and boron is used in the control rods.
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.
No, control rods are not a part of the fuel assemblies in nuclear reactors. They are separate "pieces" in the core, and essentially fit in "spaces" between fuel bundles.