| 摘要 |
PROBLEM TO BE SOLVED: To more efficiently and safely form the first coated layer to the fourth coated layer. SOLUTION: In a manufacturing equipment of coated fuel particle for high-temperature gas-cooled reactors, the raw material gas is discharged for supplying from a gas discharge nozzle device into a reaction vessel and fluidizing and heating uranium dioxide fuel kernel with the discharge flow so that kernel surface of the fuel is coated with an molecule evaporation layer of a material molecule by a stuff gas thermal decomposition reaction. For a sampling mechanism for extruding the fuel kernel in the reaction vessel out to the external sample vessel during coating reaction, a sample receiver for receiving fuel kernel passing through the nozzle hole which has an inner diameter allowing passing of the fuel kernel as at least a part of the gas discharge nozzle device when the material gas discharge is stopped, and is penetrated through the bottom of the reaction vessel and falling down, a sample extrusion pipe for extruding the fuel kernel from the sample receiver to outside by natural fall, a sample vessel for containing the fuel kernel falling from the sample extrusion pipe, and an on-off valve provided to the sample extrusion pipe are provided. COPYRIGHT: (C)2007,JPO&INPIT
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