| 21. | It operated as the Integral Fast Reactor prototype.
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| 22. | Fast reactor control cannot depend solely on Doppler broadening or on negative void coefficient from a moderator.
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| 23. | One such proposal calls for a gas-cooled fast reactor that is fueled primarily by plutonium and americium.
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| 24. | Fast reactors lack a moderator, and thus lack one of the systems that remove neutrons from the system.
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| 25. | Some SMRs are " fast reactors " they don t use moderators to slow down the neutrons.
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| 26. | Another proposed fast reactor is a fast molten salt reactor, in which the molten salt's moderating properties are insignificant.
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| 27. | Another proposed fast reactor is a Molten Salt Reactor, one in which the molten salt's moderating properties are insignificant.
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| 28. | A number of reactor designs, like the Integral Fast Reactor, have been designed for this rather different fuel cycle.
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| 29. | The GFR base design is a fast reactor, but in other ways similar to a high temperature gas-cooled reactor.
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| 30. | The plan is similar to that used following the closure of the Dounreay Fast Reactor in the United Kingdom.
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