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Question
Which of the following is not used as a moderator?
Which of the following is not used as a moderator?
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Solution
The correct option is D sodium
In a fast reactor, there is no moderator, only fuel and coolant. The moderation of neutrons is undesirable in fast reactors. Commonly used moderators include regular (light) water (roughly 75% of the world's reactors), solid graphite (20% of reactors) and heavy water (5% of reactors). heavy water, graphite, berelium is use to moderator and sodium is not use a moderator
In a fast reactor, there is no moderator, only fuel and coolant. The moderation of neutrons is undesirable in fast reactors. Commonly used moderators include regular (light) water (roughly 75% of the world's reactors), solid graphite (20% of reactors) and heavy water (5% of reactors). heavy water, graphite, berelium is use to moderator and sodium is not use a moderator
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