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Division Spotlight
Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
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.
Jong Sung Ahn, Yong Kwon Koh
Fusion Science and Technology | Volume 28 | Number 3 | October 1995 | Pages 793-796
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-A30501
Articles are hosted by Taylor and Francis Online.
The tritium level of the precipitation in Korea is monitored at the Pohang Station from 1961 to 1976 and at the KAERI from 1981 to 1994. The tritium contents of the precipitation were recorded to about 1,300TU owing to world-wide nuclear devices in 1963. The tritium contents of precipitation, surface water, groundwater, and sea water in 1991 are 10TU, 14TU, 15TU, and 4TU, respectively. The tritium content tends to increase from Cheju Island (14TU) to Baekdu Mt. (48TU). This shows that the tritium contents increase with latitude and are effected by the altitude. The tritium contents of surface water, groundwater, and discharged water from heavy water-type nuclear power plant are measured higher than natural level. The tritium contents of discharged water from the fracture zone of the horizontal tunnel in the Chungyang area are analyzed. The data of tritium contents are applied to dating of groundwater by PFM and EM. The tritium contents of precipitation monitored were available as input data for dating of groundwater. Results of dating of groundwater are from about 14 year to 20 years.
