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Nuclear Installations Safety
Devoted specifically to the safety of nuclear installations and the health and safety of the public, this division seeks a better understanding of the role of safety in the design, construction and operation of nuclear installation facilities. The division also promotes engineering and scientific technology advancement associated with the safety of such facilities.
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June 14–16, 2021
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EDF and U.K.’s Nuclear AMRC step up partnership
EDF has signed a new membership agreement with the United Kingdom’s Nuclear Advanced Manufacturing Research Centre (AMRC) to drive innovation in low-carbon power generation and support U.K. manufacturers, the University of Sheffield–based center announced recently.
Marie Y. Arrieta, Dennis D. Keiser, Jr., Delia Perez-Nunez, Sean M. McDeavitt
Nuclear Technology | Volume 199 | Number 2 | August 2017 | Pages 219-226
Technical Paper | dx.doi.org/10.1080/00295450.2017.1336028
Articles are hosted by Taylor and Francis Online.
A fluidized bed–chemical vapor deposition (FB-CVD) process was designed and established in a two-part experiment to produce zirconium nitride barrier coatings on uranium-molybdenum particles for a reduced enrichment dispersion fuel concept. A hot-wall, inverted fluidized bed reaction vessel was developed for this process, and coatings were produced from thermal decomposition of the metallo-organic precursor tetrakis(dimethylamino)zirconium (TDMAZ) in high-purity argon gas. Experiments were executed at atmospheric pressure and low substrate temperatures (i.e., 500 to 550 K). Deposited coatings were characterized using scanning electron microscopy, energy dispersive spectroscopy, and wavelength dispersive spectroscopy. Successful depositions were produced on 1 mm diameter tungsten wires and fluidized ZrO2-SiO2 microspheres (185 to 250 µm diameter) with coating thicknesses ranging from 0.5 to 30 μm. The coating deposition rate was nominally estimated to be 0.04 ± 0.02 µm/h. The ZrN coating adhered to the microspheres, but there was a significant oxygen and possible carbon contamination.