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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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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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.
Aaron Barkatt, Alisa Barkatt, Pehr E. Pehrsson, Pedro B. Macedo, Joseph H. Simmons
Nuclear Technology | Volume 56 | Number 2 | February 1982 | Pages 271-277
Technical Paper | Radioactive Waste Management | doi.org/10.13182/NT82-A32854
Articles are hosted by Taylor and Francis Online.
A solution has been developed to the problem of pH control in interactive (finite dilution) leach tests on waste forms. To make sure that the pH, which exercises a major influence on the reactivity of the medium, is controlled by extraction of soluble components of the waste form (alkalis, silicate, borate, etc.) into the leachant and not by extraneous factors originating in the testing system (CO2, fluoride, etc.), the complete ionic balance in the leachate is determined. A technique for carrying out reliable pH measurements on small samples of unbuffered leachants by means of a glass electrode in a flow cell has been developed. The achievement of satisfactory cation-anion balance in leach solutions using chemical and electrochemical techniques has made it possible to identify in every case the major species that determine the pH and to distinguish between interactive and constant-medium test configurations. Testing systems that minimize CO2 infiltration have been developed.
