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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
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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Fusion Science and Technology
Latest News
Norway’s Halden reactor takes first step toward decommissioning
The government of Norway has granted the transfer of the Halden research reactor from the Institute for Energy Technology (IFE) to the state agency Norwegian Nuclear Decommissioning (NND). The 25-MWt Halden boiling water reactor operated from 1958 to 2018 and was used in the research of nuclear fuel, reactor internals, plant procedures and monitoring, and human factors.
Glen R. Longhurst, Brad J. Merrill
Fusion Science and Technology | Volume 39 | Number 2 | March 2001 | Pages 874-879
Divertor and Plasma-Facing Components | doi.org/10.13182/FST01-A11963349
Articles are hosted by Taylor and Francis Online.
The Tritium Migration Analysis Program (TMAP) was an aid in performing safety analyses of fusion systems using combined heat and mass transport calculations. Upgraded to TMAP4, it was verified and validated at the INEEL. The further upgrade of the code to TMAP2000 was accomplished in response to several needs. TMAP and TMAP4 had the capacity to deal with only a single trap for diffusing gaseous species in solid structures. TMAP2000 has been revised to include up to three separate traps and to keep track separately of each of up to 10 diffusing species in each of the traps. The original code experienced problems in dealing with heteronuclear molecule formation such as HD and DT. That has been corrected. A further sophistication is the addition of non-diffusing surface species and surface binding energy dynamics options. TMAP2000 will accommodate up to 30 such surface species. Additionally, TMAP2000 allows simulation of surface fluxes dependent on a surface binding energy and an adsorption barrier energy. All of the previously existing features for heat transfer, flows between enclosures, and chemical reactions within the enclosures have been retained, but the allowed problem size and complexity have been significantly increased to take advantage of the greater memory and speed available on modern computers.