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Division Spotlight
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.
Meeting Spotlight
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
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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Latest News
TerraPower begins U.K. regulatory approval process
Seattle-based TerraPower signaled its interest this week in building its Natrium small modular reactor in the United Kingdom, the company announced.
TerraPower sent a letter to the U.K.’s Department for Energy Security and Net Zero, formally establishing its intention to enter the U.K. generic design assessment (GDA) process. This is TerraPower’s first step in deployment of its Natrium technology—a 345-MW sodium fast reactor coupled with a molten salt energy storage unit—on the international stage.
A. J. Francis, C. R. Iden, B. J. Nine, C. K. Chang
Nuclear Technology | Volume 50 | Number 2 | September 1980 | Pages 158-163
Technical Paper | Radioactive Waste | doi.org/10.13182/NT80-A32541
Articles are hosted by Taylor and Francis Online.
Several trench leachate samples collected from commercially operated low-level radioactive waste disposal sites at Maxey Flats, Kentucky and at West Valley, New York were analyzed for organic constituents. The organic compounds in the water samples were extracted with methylene chloride, separated into acidic, basic, and neutral fractions, and analyzed by gas chromatography and mass spectrometry. About 75 compounds consisting of several straight and branched chain aliphatic acids, aromatic acids, alcohols, aldehydes, ketones, amines, aromatic hydrocarbons, esters, ethers, and phenols were identified in the leachate samples. These compounds represent, in general, the synthetic and natural organic wastes such as contaminated cellulosic materials, scintillation liquids, solvents, and decontamination fluids buried in the trenches and their biological decomposition products. The organic compounds, especially the organic acids, phthalates, and tributyl phosphate, may influence the mobility of the radionuclides from the burial trenches by solubilization, leaching, and formation of weak complexes.
