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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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August 2024
Latest News
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.
F. Schmittroth
Nuclear Science and Engineering | Volume 59 | Number 2 | February 1976 | Pages 117-139
Technical Paper | doi.org/10.13182/NSE76-A15684
Articles are hosted by Taylor and Francis Online.
The effect of uncertainties in the basic nuclear data needed in fission-product decay-heat summation calculations is considered. A variety of methods are developed to study the effect of errors in decay energies, half-lives, fission yields, and metastable states. Based on preliminary estimates of the uncertainties in the basic data, these methods show that decay heat for typical reactor exposures can be calculated with an accuracy of 7% or better for cooling times >10 sec. Attention is directed toward thermal fission of 235U, although the more general problem of other fissionable nuclides is considered. For cooling times <1000 sec, the major sources of error are due to uncertainties in the decay energies and fission-product charge distributions. All calculations are based on ENDF/B-IV cross sections.