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Mathematics & Computation
Division members promote the advancement of mathematical and computational methods for solving problems arising in all disciplines encompassed by the Society. They place particular emphasis on numerical techniques for efficient computer applications to aid in the dissemination, integration, and proper use of computer codes, including preparation of computational benchmark and development of standards for computing practices, and to encourage the development on new computer codes and broaden their use.
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2025 ANS Annual Conference
June 15–18, 2025
Chicago, IL|Chicago Marriott Downtown
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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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Smarter waste strategies: Helping deliver on the promise of advanced nuclear
At COP28, held in Dubai in 2023, a clear consensus emerged: Nuclear energy must be a cornerstone of the global clean energy transition. With electricity demand projected to soar as we decarbonize not just power but also industry, transport, and heat, the case for new nuclear is compelling. More than 20 countries committed to tripling global nuclear capacity by 2050. In the United States alone, the Department of Energy forecasts that the country’s current nuclear capacity could more than triple, adding 200 GW of new nuclear to the existing 95 GW by mid-century.
Emilio Tassoni, Ferruccio Gera
Nuclear Technology | Volume 72 | Number 1 | January 1986 | Pages 89-98
Technical Paper | Radioactive Waste Management | doi.org/10.13182/NT86-A33757
Articles are hosted by Taylor and Francis Online.
Dissipation of the decay heat generated by high-level radioactive waste without producing unacceptable temperatures is one of the main problems related to geological disposal. An in situ heating experiment has been carried out in a clay quarry in the area of Monterotondo in order to discover the temperature field and the thermal effects caused by simulated high-level radioactive waste emplaced in an argillaceous rock. The experiment has been carried out by feeding an electric heater buried 6.4 m deep in a clay formation and by measuring temperature rises in boreholes drilled between 50 and 200 cm from the thermal source. The theoretical temperature rises in the clay, calculated by means of the Belgian MPGST code, have been compared with the experimental results. The temperature rises measured in the clay agree quite well with the theoretical values and show that the clay is a homogeneous medium. It was concluded that (a) the thermal conduction code seems sufficiently accurate to forecast the temperature rise caused in the clay by decay heat generation and (b) the thermal conductivity deduced by a comparison between experimental and theoretical temperature rises ranges between 0.015 and 0.017 W·cm−1°C−1. A laboratory-automated method, using needle and cylindrical probes, has also been designed to measure the thermal conductivity of clay samples. The probes are stainless steel cylinders, containing a heating resistance and a thermistor to measure the temperature rise. The method has been used to measure the thermal conductivity of clay samples coming from different Italian quarries. The thermal conductivity measured on the clay sedimentation plane is higher than that measured along the direction perpendicular to it. The clay thermal conductivity decreases as the water content rises.
