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Heavy water (deuterium) functions as a moderator. It slows down fast neutrons released by fission reactions in order to allow the reaction to be sustained. Fast neutrons pass through the reactor before initiating another fission reaction.

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Q: In nuclear reactor heavy water is used as?
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Which is used as moderator in nuclear reactor?

Most often, light water (H2O) is used as a moderator in a nuclear reactor. Sometimes, heavy water (D2O), or graphite is used.


The moderator used in the nuclear reactor at Madras atomic power station in Kalpakkam is?

Heavy water(PHWR)--Pressurised heavy water reactor


What is used to bathe the control rods and fuel bundles of the nuclear reactor?

Heavy water


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).


Do substance is used as moderator in modern nuclear reactor?

Water (H2), or heavy water (D2O). Sometimes, liquid sodium is used.


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.


What is a Nuclear reactor moisture separator?

This is used in the nuclear reactor that is known as Boiling Water Reactor (BWR) in which heat produced by the nuclear fission in the nuclear fuel allows the light water reactor coolant to boil. Then, the nuclear reactor moisture separator is used to increase the dryness of the produced steam before it goes to the reactor steam turbines.


Which is used as a moderator in nuclear reactor?

Most current power plants use water, but heavy water, graphite, hydrocarbons, etc. could be used instead.


What is the most widely used nuclear reactor?

The pressurised water reactor (PWR)


Why is only heavy water used as coolant for nuclear energy and can you use any other coolant used replacing D2O?

Many pressurized water reactors use "regular" water (light water) as a primay coolant. That means that "only heavy water" is not a rule as regards reactor design. Reactor design specifies the coolant to be used.


What substances are used as moderators in a nuclear reactor?

carbon and water.


What is a used fuel in nuclear power plants?

The used fuel in a nuclear power plant is the nuclear fuel being discharged from the nuclear reactor after being irradiated during reactor operation. It is usually composed of trans-uranium heavy elements, a wide variety of fission products (that resulted from the nuclear fission processes in the nuclear reactor) and products of radioactive decay (produced before and after fuel discharge from the nuclear reactor).