Secondary (bred) nuclear fuels used in power reactors: select the correct pair. Definition: “Secondary fuel” refers to fissile material bred from fertile isotopes inside reactors. Choose the correct pair commonly identified as secondary fuels.
Mechanical Engineering
IC Engines and Nuclear Power Plants
Difficulty: Easy
Choose an option
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AU-233 and Pu-239
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BU-235 and Th-232
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CU-235 and Pu-238
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DU-233 and Pu-238
Answer
Correct Answer: U-233 and Pu-239
Explanation
Concept/ApproachFertile isotopes Th-232 and U-238 breed fissile U-233 and Pu-239 respectively under neutron capture and subsequent decay. These bred fissile nuclides are termed secondary fuels.
Final AnswerU-233 and Pu-239.