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Division Spotlight
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
Meeting Spotlight
2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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
NRC updating GEIS rule for new nuclear technology
The Nuclear Regulatory Agency is issuing a proposed generic environmental impact statement (GEIS) for use in reviewing applications for new nuclear reactors.
In an April 17 memo, NRC secretary Carrie Safford wrote that the commission approved NRC staff’s recommendation to publish in the Federal Register a proposed rule amending 10 CFR Part 51, “Environmental Protection Regulations for Domestic Licensing and Related Regulatory Functions.”
Kiriko Miyamoto, Ken-ichi Kimura, Shozo Hongo
Fusion Science and Technology | Volume 28 | Number 3 | October 1995 | Pages 910-917
Tritium Safety | Proceedings of the Fifth Topical Meeting on Tritium Technology in Fission, Fusion, and Isotopic Applications Belgirate, Italy May 28-June 3, 1995 | doi.org/10.13182/FST95-A30521
Articles are hosted by Taylor and Francis Online.
For purpose of dose estimation a transfer model of tritium as well as some other important radionuclides that occur in the environment is being developed in our institute. Tritium is considered to be a significant source of internal exposure for man. Our present work is focussed on designing a tritium compartment model of the local hydrosphere. Our concept is based on the seven-box model of the hydrological cycle on a global scale that was proposed by National Council on Radiation Protection and Measurements (NCRP). To estimate the impact of nuclear facilities in a local area, geographical and geological conditions need to be taken into consideration. Therefore in present work, groundwater reservoir was divided into three layers and then the transfer coefficients were determined by analyzing time-series data on fallout tritium concentrations in the local environmental water. The most important difference between the NCRP model and ours is that the tritium metabolism of aquatic plants, invertebrates and fish is taken into consideration. For these aquatic organisms there are two sub-compartments, namely tissue free water tritium (TFWT) and organically bound tritium (OBT). We developed this model because the living organisms in such aquatic systems are utilized as fishery products by the Japanese people. The effect of the fast intake of HTO by aquatic plants was demonstrated by a preliminary application of this model.