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2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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Latest News
IAEA report confirms safety of discharged Fukushima water
An International Atomic Energy Agency task force has confirmed that the discharge of treated water from Japan’s Fukushima Daiichi nuclear power plant is proceeding in line with international safety standards. The task force’s findings were published in the agency’s fourth report since Tokyo Electric Power Company (TEPCO) began discharging Fukushima’s treated and diluted water in August 2023.
More information can be found on the IAEA’s Fukushima Daiichi ALPS Treated Water Discharge web page.
E. Hohmann, S. Safai, Ch. Bula, R. Lüscher, C. Harm, S. Mayer, O. Morath, E. Pedroni, S. Zenklusen
Nuclear Technology | Volume 175 | Number 1 | July 2011 | Pages 77-80
Technical Paper | Special Issue on the 16th Biennial Topical Meeting of the Radiation Protection and Shielding Division / Radiation Protection | doi.org/10.13182/NT11-A12273
Articles are hosted by Taylor and Francis Online.
Proton therapy is a widely used method of cancer treatment. Undesired secondary particles such as neutrons accompany the irradiation. Depending on the measurement position, the expected main dose contribution due to undesired secondary particles arises from neutrons with energies >20 MeV. Conventionally used Andersson and Braun-type survey instruments may underestimate the ambient dose equivalent up to a factor of 2 due to their limited response for high-energy neutrons. Therefore, it is desirable to investigate the neutron stray field in conditions comparable to therapy treatment, in particular the resulting dose to equipment placed in the treatment vault to estimate possible consequences to its operation. The irradiation of a water phantom with 200-MeV protons adequately reproduces these conditions.
