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As part of the Department of Energy’s Advanced Gas Reactor Fuel program, Babcock & Wilcox is developing a fluidized bed chemical vapor deposition process to deposit a TRISO coating on UCO and UO2 kernels. These coated kernels will go into irradiation tests in the Advanced Test Reactor at Idaho National Laboratory. This paper reports on the development activities including the furnace design and the furnace runs made to qualify the coating process.

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A novel replication process for silicon carbide surfaces has been developed. A polished polycrystalline chemical vapor deposited (CVD) β-SiC surface was reproduced from a SiC substrate (mandrel) by a two-step pretreatment process followed by CVD of SiC. In this paper we describe the process and present characterization data for both the substrate and the replicated surfaces. Based on the characterization results, we have developed a model which describes the chemical reactions that occur during the replication process.

Babcock & Wilcox (B&W) and its parent corporation, McDermott International, Inc., comprise one of the world’s largest energy engineering and service companies. Included within the spectrum of it’s businesses are: • fossil power generation systems, related environmental equipment and boiler cleaning products • design engineering, structure fabrication, and equipment for offshore oil and gas production • nuclear fuel and other nuclear propulsion components for the US Navy • industrial heat exchangers and condensers • automated work cells for material processing and inspection • design of onshore hydrocarbon processing facilities • environmental remediation services