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What is used as an efficient moderator in a majority of reactors?
Wiki User
∙ 10y ago
Light water (H2O) and heavy water (D2O)
Wiki User
∙ 10y ago
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Does liquid sodium is used as a coolant in nuclear reactors?
In some reactors it is, depends on the design.
What is the most common coolant used in nuclear reactors?
The most common coolant used in nuclear reactors is water. There are light water reactors (using "regular" water), and the heavy water kind of reactor.
Why can't ordinary uranium be used in reactors coooled by ordinary water?
Because the neutron economics are against it, a critical reactor and a chain reaction would not be possible. Ordinary water absorbs too many neutrons. For natural uranium you must use graphite or heavy water for the moderator.
How is radioisotopes used in nuclear reactors?
Radioisotopes for many uses (e.g. medical, industrial, scientific) are produced in nuclear reactors.
Which actinide fuel is used in nuclear reactors?
It is Uranium
Why sodium is used in nuclear reactors?
efficient coolant that does not act as a neutron moderator.
What are the moderator used in a nuclear reactor with natural uranium?
The moderator used in nuclear reactors with natural uranium is generally the heavy water (D2O).
How heavy water is used to make plutonium from uranium?
Heavy water is used in nuclear reactors as moderator for neutrons.
What are the uses of carbon heavy water and concrete in the nuclear reactor?
Carbon in the form of graphite is used in some types of reactors as the moderator*.Heavy water is used in some types of reactors as the moderator*.Light water is used in some types of reactors as the moderator*.Light water is used in most current types of reactors as coolant and in the form of steam to drive the turbines.Liquid metals (Sodium, NaK, Mercury, etc.) are used in some types of reactors as coolant.Concrete, often borated concrete to absorb neutrons better, is used in reactors as radiation shielding.*Moderator: a material that slows highly energetic fission neutrons rapidly to thermal energies to prevent their capture by Uranium-238 and increase their chance of causing more fissions of Uranium-235 to keep the reactor running.
What are graphite's uses?
Graphite is a pure form of coal or carbon. It is a good conductor of heat and electrcity. It is used as a neutron moderator in nuclear reactors of type Gas Cooled reactors.
Are control rods in nuclear reactors made of graphite?
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.
What is a light water reactor?
The nuclear fission reactors used in the United States for electric power production are classified as "light water reactors" in contrast to the "Heavy Water Reactors" used in Canada. Light water (ordinary water) is used as the moderator in U.S. reactors as well as the cooling agent and the means by which heat is removed to produce steam for turning the turbines of the electric generators.
Which one among the following is used as a moderator in nuclear reactors?
You don't give the examples, but the moderators used are 1. Heavy water 2. graphite 3. light water.
What is the most poisonous but most efficient transuranium element when used in nuclear reactors?
You probably are thinking of plutonium
What are the functions of the deuterium and tritium atoms in nuclear reactors?
All current nuclear reactors are fission reactors, tritium has no function in a fission reactor, in standard water moderated reactors deuterium also has no function, in heavy water moderated reactors deuterium is the moderator. If we are ever able to make a fusion reactor, deuterium/tritium mix will be used as fuel.
What is the moderator in US nuclear power plants?
Neutrons released from the fissioning, or splitting, of Uranium or Plutonium atoms collide with the molecules of the moderator, losing some of their energy in the process. This slows the neutrons down (slow neutrons are referred to as "thermal" neutrons") so that they are more likely to cause fission when colliding with another Uranium or Plutonium atom. In the most common types of reactors the moderator used is ordinary distilled water which is also used as the coolant for the reactor. Graphite and heavy water can also be used, and there are types of reactors which use no moderator at all - they operate on "fast" neutrons alone.
How are nuclear reactors used in nuclear reactors?
Well, as nuclear reactors are nuclear reactors, nuclear reactors are not used inside nuclear reactors.
