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Nuclear Criticality Safety
NCSD provides communication among nuclear criticality safety professionals through the development of standards, the evolution of training methods and materials, the presentation of technical data and procedures, and the creation of specialty publications. In these ways, the division furthers the exchange of technical information on nuclear criticality safety with the ultimate goal of promoting the safe handling of fissionable materials outside reactors.
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Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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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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Fusion Science and Technology
Latest News
Update: Senate includes $250k for EPA generic repository
The U.S. Senate’s proposed Department of the Interior funding package provides $250,000 to develop a generic, technology-neutral standard for future high-level nuclear waste disposal facilities.
The goal is for the Environmental Protection Agency to use modern and international practices in creating new plans to store U.S. nuclear waste. This spring, the EPA had requested $635,000 to fund this work—but even the proposed $250,000 would help get the process moving.
So far, funding has been included only in the Senate’s version of the appropriations bill, but supporters hope it makes the final package when Senate and House lawmakers conference on the final fiscal year 2025 appropriations legislation this fall.
For more details, see the original story below from June 28.
Suhas Bhandarkar, Reny Paguio, Fred Elsner, Denise Hoover, Abbas Nikroo, Chris Guido
Fusion Science and Technology | Volume 70 | Number 2 | August-September 2016 | Pages 127-136
Technical Paper | doi.org/10.13182/FST15-245
Articles are hosted by Taylor and Francis Online.
In this paper, we describe the reasoning that leads us to focus on the so-called curing process where a solid poly(α-methylstyrene) (PAMS) shell is formed from the initial solution phase. We demonstrate the existence of a percolation zone at about 55 wt% PAMS, beyond which the roundness of the shell can be expected to be irreversible. Using a simple model and a few supporting experiments to account for the rate of mass transfer of the fluorobenzene solvent phase, we show that curing rate is determined almost entirely by just a short exposure, to the sweeping gas, of the shells that graze the free surface of the curing bath as they move around in it. We propose here that specific control of the curing conditions at percolation would enable rounder mandrels.