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Members focus on the dissemination of knowledge and information in the area of power reactors with particular application to the production of electric power and process heat. The division sponsors meetings on the coverage of applied nuclear science and engineering as related to power plants, non-power reactors, and other nuclear facilities. It encourages and assists with the dissemination of knowledge pertinent to the safe and efficient operation of nuclear facilities through professional staff development, information exchange, and supporting the generation of viable solutions to current issues.
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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Remembering Joseph M. Hendrie
Joseph M. Hendrie
To those of us who knew Joe, even prior to his appointment as chair of the Nuclear Regulatory Commission, it is an understatement to say that he was a larger-than-life member of the nuclear science and technology enterprise. He was best known to the broader community for two major accomplishments: the design and construction of the High Flux Beam Reactor (HFBR) at Brookhaven National Laboratory and the creation of the standard review plan (SRP) for the U.S. Atomic Energy Commission.
In addition to the products of these endeavors becoming major fundaments to their respective communities, they were uniquely Joe. The safety analysis report for the HFBR was written essentially single-handedly by him. This was true of the SRP as well, which became the key safety review document for the NRC as it performed safety reviews for the growing number of power reactor applications in the United States. His deep technical knowledge of nuclear engineering and his extraordinary management skills made this possible.
A. K. Knight, D. R. Harding
Fusion Science and Technology | Volume 49 | Number 4 | May 2006 | Pages 728-736
Technical Paper | Target Fabrication | doi.org/10.13182/FST06-A1193
Articles are hosted by Taylor and Francis Online.
Vapor deposited PMDA-ODA poly(amic acid) and polyimide capsules have been produced with desirable material properties (high tensile strength, permeability, and elastic modulus), but the contributions of the process steps and their dependence on external control variables has not been investigated. We have combined numerical simulations with experimental measurements to model the steps of the vapor deposition process including monomer sublimation, vapor transport to the bounce pan, and poly-condensation on the substrate surfaces. The measured sublimation rates of PMDA and ODA monomer at temperatures that yielded stoichiometric poly(amic acid) (10-6 Torr deposition) are 1.2 × 10-7 gm/s PMDA (at 153° C) and 6.3 × 10-10 gm/s ODA (at 126° C) - a 180:1 PMDA:ODA molar ratio. These provide initial boundary conditions to simulate the thermal environment and vapor transport inside the deposition chamber at 1 × 10-2 Torr. A disproportionate loss of PMDA gas during transport to a stationary mandrel is shown by the numerical model to reduce the monomer stoichiometry to 9:1 PMDA:ODA. The transport-based loss depends strongly on the geometry of the substrate support, as is shown by modifying the substrate to change the flow pattern, which reduces this ratio to 1:1 PMDA:ODA above the mandrel. A separate model of the kinetics of monomer deposition and polymerization reactions was developed to correlate the gas concentrations above the substrate with the elemental concentrations comprising the film. This basic model was tested with rate constants based on reaction probabilities of one and equal deposition rates for two monomers in the absence of measured values and is sensitive to changes in vapor stoichiometry.