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Uranium is a radioactive substance. Nuclear power production is carried out by the energy supplied by nuclear reactors. Nuclear reactors control the energy emission by nuclear fission reaction in radioactive substance when bombarded by neutrons.
Plutonium is used for nuclear fuels not for control rods.
They are used in nuclear reactor to control the rate of fission of uranium and plutonium. Because these elements have different capture cross sections for neutrons of varying energies, the compositions of the control rods must be designed for the neutron spectrum of the reactor it is supposed to control.
Plutonium is only a trade affair between countries, under the control of IAEA.
R Riggs has written: 'Control rod guide tube wear in operating reactors' -- subject(s): Control, Cores, Nuclear reactors, Pressurized water reactors, Nuclear fuel claddings
H. Roggenbauer has written: 'Application of a non-interacting control scheme in the direct digital control of the HBWR' -- subject(s): Boiling water reactors, Control, Nuclear reactors
control rods
Plutonium
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.
The Production Budget for Control was $6,400,000.
boron or cadmium control rods.
No, control rods in nuclear reactors are not made of graphite. The control rods have to be able to gather up the neutrons to shut the reactor down, so boron is often selected. Graphite is used in some reactors as a moderator, and a moderator slows down neutrons. The slower neutrons have a greater ability to undergo neutron capture to continue the chain.