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The Mission of the Robotics and Remote Systems Division is to promote the development and application of immersive simulation, robotics, and remote systems for hazardous environments for the purpose of reducing hazardous exposure to individuals, reducing environmental hazards and reducing the cost of performing work.
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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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Argonne to investigate Pu chemistry to aid Hanford cleanup
Researchers at the Department of Energy’s Argonne National Laboratory are investigating the details of plutonium chemistry with the goal of aiding the cleanup of the Hanford Site in Washington state. For more than 40 years, reactors located at Hanford produced plutonium for America’s defense program, resulting in millions of gallons of liquid radioactive and chemical waste.
Wang Kee In, Dong Seok Oh, Tae Hyun Chun
Nuclear Technology | Volume 139 | Number 1 | July 2002 | Pages 72-79
Technical Paper | Thermal Hydraulics | doi.org/10.13182/NT02-A3305
Articles are hosted by Taylor and Francis Online.
Empirical and computational pressure drop correlations were developed to accurately estimate the pressure drop at the fuel spacer grid in a pressurized water reactor. The empirical correlation uses the balance of hydraulic forces acting on the spacer grid. The amount of pressure drop is assumed to depend largely on the reduction of the flow cross section, the flow constriction in the spacer region, and the frictional loss. The grid form drag due to the relative plugging and the flow constriction by the grid components were found to be the primary factors of the total pressure drop. The computational correlation combines the pressure drop due to flow blockage by the spacer grid and the pressure drop calculated by dynamics analysis. The pressure loss coefficients from the empirical correlation agree well with the measured ones for the spacer grids with and without the mixing vane. The computational correlation overpredicts the pressure loss coefficients for the spacer grid with the mixing vane.