Use of ordinary (light) water as a reactor moderator with enriched uranium fuel: evaluate the statement. Statement: “Ordinary water is sometimes used as a moderator when enriched uranium is used as fuel in nuclear power plants.” Choose whether the statement is correct.
Mechanical Engineering
IC Engines and Nuclear Power Plants
Difficulty: Easy
Choose an option
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AAgree
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BDisagree
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COnly with natural uranium
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DOnly with heavy water
Answer
Correct Answer: Agree
Explanation
Concept/ApproachLight-water reactors (PWR/BWR) use ordinary water as moderator and coolant but require enriched uranium fuel (typically 3–5% U-235) to maintain criticality. Natural uranium needs better moderators like heavy water or graphite.
Final AnswerAgree.