Fast breeder reactors make use of___________________?
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Answer: D. U-235 as fuel
Explanation
Fast breeder reactors make use of advanced fuel mixtures rather than relying solely on U-235. Fast reactors utilize plutonium-239 and uranium-238 fuel cycles to breed more fissile material. Natural or enriched uranium fuel assemblies are configured to sustain fast neutron chain reactions. Fast breeder reactors generate more fissile material than they consume during power production. Fission reactions are sustained by fast neutrons without slowing them down via moderators. Liquid metal coolants like sodium transfer heat efficiently from compact reactor cores.
Advanced nuclear fuel cycles extend global uranium resources by converting fertile isotopes. Reactor engineering requires specialized coolants compatible with fast neutron flux environments. Non-proliferation policies and technical complexities govern the deployment of breeder reactors. Graphite acts as a neutron moderator, which is purposely omitted in fast reactor designs. Water moderates neutrons too effectively, making liquid metal necessary for fast reactor cooling. Relying solely on unmodified U-235 without breeding blankets describes thermal reactors.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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