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Division Spotlight
Nuclear Installations Safety
Devoted specifically to the safety of nuclear installations and the health and safety of the public, this division seeks a better understanding of the role of safety in the design, construction and operation of nuclear installation facilities. The division also promotes engineering and scientific technology advancement associated with the safety of such facilities.
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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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
ARG-US Remote Monitoring Systems: Use Cases and Applications in Nuclear Facilities and During Transportation
As highlighted in the Spring 2024 issue of Radwaste Solutions, researchers at the Department of Energy’s Argonne National Laboratory are developing and deploying ARG-US—meaning “Watchful Guardian”—remote monitoring systems technologies to enhance the safety, security, and safeguards (3S) of packages of nuclear and other radioactive material during storage, transportation, and disposal.
Cheol Ho Pyeon, Takahiro Yagi, Kiichi Sukawa, Yoshimasa Yamaguchi, Tsuyoshi Misawa
Nuclear Science and Engineering | Volume 177 | Number 2 | June 2014 | Pages 156-168
Technical Paper | doi.org/10.13182/NSE13-21
Articles are hosted by Taylor and Francis Online.
Experimental studies on the thorium-loaded accelerator-driven system (ADS) were conducted at the Kyoto University Critical Assembly. Mockup experiments were carried out in both the critical and subcritical states to investigate the influence of different thermal neutron profiles on the thorium capture and fission reactions. Thorium plate irradiation experiments for the thorium capture and fission reactions demonstrate fission reactions in the critical state, and the calculated-to-experiment values of reaction rates show accuracy within a relative difference of ∼30%. In the ADS experiments with an external neutron source (14-MeV neutrons and 100-MeV protons), subcritical experiments were carried out in the thorium-loaded cores to investigate the influence of different thermal neutron profiles on thorium capture reaction rates by the measurement of 115In(n,γ)116mIn reactions. The results reveal the difference between reaction rate distributions attributed to varying not only the neutron spectrum of the core but also the external neutron source. A comparison between the measured and calculated reaction rate distributions reflects the accuracy of reaction-rate analyses for the thorium-loaded ADS experiments with an external neutron source. Additionally, kinetic experiments were carried out to deduce the prompt neutron decay constants and subcriticality by the pulsed neutron method.
