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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
Standards Program
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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Deep Space: The new frontier of radiation controls
In commercial nuclear power, there has always been a deliberate tension between the regulator and the utility owner. The regulator fundamentally exists to protect the worker, and the utility, to make a profit. It is a win-win balance.
From the U.S. nuclear industry has emerged a brilliantly successful occupational nuclear safety record—largely the result of an ALARA (as low as reasonably achievable) process that has driven exposure rates down to what only a decade ago would have been considered unthinkable. In the U.S. nuclear industry, the system has accomplished an excellent, nearly seamless process that succeeds to the benefit of both employee and utility owner.
Thomas H. Handley
Nuclear Science and Engineering | Volume 16 | Number 4 | August 1963 | Pages 440-447
Technical Paper | doi.org/10.13182/NSE63-A26556
Articles are hosted by Taylor and Francis Online.
The solvent-extraction properties of the sulfur analogs, both neutral and acid, of those organophosphorus compounds that have been used so extensively in solvent extraction have been investigated. These sulfur analogs have one or more oxygen atoms replaced by sulfur atoms. The neutral esters, trialkyl phosphorothioates, selectively extract Ag+ and Hg+2 from a nitric acid medium. In general, the acid esters, dialkyl phosphorothioic and -dithioic acids, extract from mineral acid solutions those metal ions that form insoluble sulfides. Dialkyl phosphorothioic acids appear to be more selective extractants than are the corresponding dithioic acids. The effects of various organic solvents, of concentration of mineral acid, and of concentration of dialkyl phosphorothioic and -dithioic acids were studied. The relative order of extraction and the limits of extraction were determined. The nature of the zinc di-n-butyl phosphorothioate and -dithioate complexes as they exist in the aqueous and organic phases were investigated.
