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Securing the advanced reactor fleet
Physical protection accounts for a significant portion of a nuclear power plant’s operational costs. As the U.S. moves toward smaller and safer advanced reactors, similar protection strategies could prove cost prohibitive. For tomorrow’s small modular reactors and microreactors, security costs must remain appropriate to the size of the reactor for economical operation.
Valeriy M. Dorogotovtsev, Alexander A. Akunets
Fusion Science and Technology | Volume 31 | Number 4 | July 1997 | Pages 411-417
Technical Paper | Eleventh Target Fabrication Specialists' Meeting | doi.org/10.13182/FST97-A30794
Articles are hosted by Taylor and Francis Online.
The influence of the gaseous atmosphere inside the installation for microsphere production on the quality of the microsphere surface is discussed. The heat-exchange environment of a furnace controls the rate of heating of the initial granules, the character of the interaction of the viscous gas environment with the falling liquid hollow sphere, and the rate of cooling of the resultant microsphere. For an Ar:He mixture of gases it is shown experimentally that the change of the component percentage of the gas mix results in a different character in the surface quality of the obtained microspheres. Regions of gas mixture composition are found where the surfaces of polystyrene or glass microspheres have no characteristic defects. These compositions are not the same for glass and polystyrene. We present a physical explanation of these observations.