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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 Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
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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New laws offer nuclear industry incentives for existing power plant uprates
This year, the U.S. nuclear industry received a much-needed economic boost that could help preserve operating nuclear power plants and incentivize upgrades that extend their lifespan and power output.
Signed into law in 2022, the Inflation Reduction Act offers production tax credits (PTCs) for existing nuclear power plants and either PTCs or investment tax credits (ITCs) for new carbon-free generation. These credits could make power uprates—increasing the maximum power level at which a commercial plant may operate—a much more appealing option for utilities.
E. Johansson, E. Jonsson
Nuclear Science and Engineering | Volume 25 | Number 2 | June 1966 | Pages 157-164
Technical Paper | doi.org/10.13182/NSE66-A17732
Articles are hosted by Taylor and Francis Online.
Using the fast chopper at the Stockholm reactor R1, we have measured angular neutron-flux spectra in an arrangement consisting of short uranium rods in heavy water. The rods were mounted in an aluminum container placed in the central vertical channel of the reactor. The axes of the rods were horizontal and approximately located in a vertical plane. The uranium was 29-mm diam, the aluminum can was 1-mm thick, and the spacing was about 140 mm. We measured (E,, in the vertical direction , for various positions . At 1 eV the results obtained were equal to each other within ±7%, but in the thermal region, they differed considerably. Thus, at 0.01 eV, the highest value measured was as much as 4.5 times the lowest one. In spite of the unclean geometry, we have also calculated the angular-flux spectra, starting from scalar-flux spectra obtained from the THERMOS code. The shape of the calculated spectra of the angular flux agreed within a few percent with the experimental spectra. From a combination of calculated and experimental results, we also obtained the spectrum of the incoming neutron current for a fuel rod. This current proved to have a neutron temperature about 7°C above the neutron temperature of the flux halfway between two rods. In the low-energy region (around 0.015 eV) the out-flux from a rod showed a wavy variation, believed to depend on Bragg effects in the metal.