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Division Spotlight
Young Members Group
The Young Members Group works to encourage and enable all young professional members to be actively involved in the efforts and endeavors of the Society at all levels (Professional Divisions, ANS Governance, Local Sections, etc.) as they transition from the role of a student to the role of a professional. It sponsors non-technical workshops and meetings that provide professional development and networking opportunities for young professionals, collaborates with other Divisions and Groups in developing technical and non-technical content for topical and national meetings, encourages its members to participate in the activities of the Groups and Divisions that are closely related to their professional interests as well as in their local sections, introduces young members to the rules and governance structure of the Society, and nominates young professionals for awards and leadership opportunities available to members.
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.”
Chuan Li, Jian Zhang, Chao Fang
Nuclear Technology | Volume 200 | Number 1 | October 2017 | Pages 45-53
Technical Paper | doi.org/10.1080/00295450.2017.1348874
Articles are hosted by Taylor and Francis Online.
In this paper, the methodology of studying the chemical forms of important fission products (FPs) in the primary circuit of a pebble-bed modular high-temperature gas-cooled reactor (HTR-PM) is given, and the chemical forms of important FPs cesium (Cs), strontium (Sr), argentum (Ag), iodine (I), and corresponding amounts are calculated under the condition of equilibrium core of HTR-PM considering the O2 impurity in the helium coolant of the primary circuit. It is shown that for the Cs element, Cs2O2 and Cs2O may undergo a phase transformation between their nongaseous state and gaseous state, respectively, and for the Sr element, the conversion from SrO2 to SrO is obvious with the increase of temperature. In contrast, the reaction between Ag and O reacts thoroughly, and AgO is very stable under different temperature conditions. There is a turning point in the chemical reaction between Cs and I with the increase of temperature, which illustrates that there exists competition between the I-Cs reaction and the O-Cs reaction. These results provide clear chemical form information of the important FPs in the primary circuit, which is significant to understanding the chemical reaction behavior of radionuclides in HTR-PM.