Carbon-14 is not a common nuclear reactor fuel because it has a very long half-life and does not undergo fission easily.

The primary purpose of nuclear reactor fuel is to generate heat through nuclear fission reactions. This heat is then used to produce electricity or power other applications.

A high neutron absorption cross-section ensures that neutrons released during fission are absorbed by the fuel, leading to further fission reactions and sustaining a chain reaction.

Uranium-235 is the primary fissile isotope used in most commercial nuclear reactors due to its relatively high abundance and suitable neutron absorption properties.

Ordinary water (H₂O) is a common moderator material in nuclear reactors because it effectively slows down neutrons without absorbing them excessively.

Control rods are used to adjust the reactor's power output by absorbing neutrons and controlling the rate of nuclear fission reactions.

Zirconium alloys are commonly used as cladding materials for nuclear reactor fuel rods due to their low neutron absorption cross-section and resistance to corrosion.

The primary concern regarding the disposal of spent nuclear reactor fuel is the management of radioactive decay heat, which can pose safety risks and requires specialized storage and handling facilities.

Hydrometallurgical processing is a common type of nuclear reactor fuel reprocessing that involves dissolving spent fuel in acidic or alkaline solutions to separate and recover valuable materials.

Nuclear reactor fuel enrichment aims to increase the concentration of fissile isotopes in the fuel, thereby enhancing its energy density and improving reactor efficiency.

Pressurized water reactor (PWR) fuel assemblies are commonly used in nuclear power plants and consist of an array of fuel rods enclosed within a structural framework.

A nuclear reactor's fuel management program aims to optimize fuel utilization by strategically arranging and replacing fuel assemblies to maximize energy production and minimize fuel consumption.

The once-through fuel cycle is a common type of nuclear reactor fuel cycle in which spent fuel is not reprocessed and is instead disposed of as radioactive waste.

The primary concern regarding the long-term storage of spent nuclear reactor fuel is the management of radioactive decay heat, which requires specialized storage facilities and ongoing monitoring to ensure safety.

Pellet fabrication is a common process in nuclear reactor fuel fabrication, where uranium or plutonium dioxide powder is pressed into cylindrical pellets, which are then loaded into fuel rods.