Fast breeder reactors operate using___________________?
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Answer: C. double circuit system of coolant cycle
Explanation
Fast breeder reactors typically employ a liquid metal coolant in a double circuit coolant system. An intermediate heat exchanger separates the radioactive primary sodium from the secondary sodium loop to ensure absolute safety. The secondary sodium circuit transfers reactor heat to water without exposing the steam generators directly to core radiation. Liquid sodium reacts violently with water, necessitating an isolated intermediate coolant loop in fast breeder reactor designs. Double circuit configurations provide a crucial safety barrier preventing radioactive sodium isotopes from reaching the steam turbines. Primary coolant pumps circulate liquid metal continuously through the reactor core to absorb massive amounts of fission heat.
Option A is incorrect because traditional fuel boilers are replaced by nuclear reactor cores and liquid metal heat exchangers. Option B describes a boiling water reactor utilizing a single direct coolant cycle rather than an isolated double circuit. Options D and E are incorrect because fast breeder reactor systems strictly require double-circuit liquid metal heat isolation.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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