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Division Spotlight
Fuel Cycle & Waste Management
Devoted to all aspects of the nuclear fuel cycle including waste management, worldwide. Division specific areas of interest and involvement include uranium conversion and enrichment; fuel fabrication, management (in-core and ex-core) and recycle; transportation; safeguards; high-level, low-level and mixed waste management and disposal; public policy and program management; decontamination and decommissioning environmental restoration; and excess weapons materials disposition.
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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Latest News
Investment bill would provide funding options for energy projects
Coons
Moran
The bipartisan Financing Our Futures Act, which expands certain financing tools to all types of energy resources and infrastructure projects, was reintroduced to the U.S. Senate on February 20 by Sens. Jerry Moran (R., Kan.) and Chris Coons (D., Del.).
Via amendment to the Internal Revenue Code, the legislation would allow advanced nuclear energy projects to form as master limited partnerships (MLPs), a tax structure currently available only to traditional energy projects.
An MLP is a business structure that is taxed as a partnership but the ownership interests of which are traded like corporate stock on a market. Until the Internal Revenue Code is amended, MLPs will continue to be available only to investors in energy portfolios for oil, natural gas, coal extraction, and pipeline projects that derive at least 90 percent of their income from these sources. This change would take effect on January 1, 2026.
M. V. Ramaniah, H. C. Jain, S. K. Aggarwal, S. A. Chitambar, V. D. Kavimandan, A. I. Almaula, P. M. Shah, A. R. Parab, V. L. Sant
Nuclear Technology | Volume 49 | Number 1 | June 1980 | Pages 121-128
Technical Paper | Nuclear Power Reactor Safety / Chemical Processing | doi.org/10.13182/NT80-A32513
Articles are hosted by Taylor and Francis Online.
Isotope Dilution Alpha Spectrometry (IDAS) and Reverse Isotope Dilution Alpha Spectrometry (RIDAS) have been developed for determining the concentration of plutonium in the irradiated fuel dissolver solution. The method exploits 238Pu in IDAS and 239Pu in R-IDAS as a spike and provides an alternative method in the event of nonavailability of 242Pu, which is required in Isotope Dilution Mass Spectrometry (IDMS). Depending upon the burnup of the fuel, 238Pu or 239Pu is used as a spike to change the 238Pu/(239Pu + 240Pu) alpha activity ratio in the sample by a factor of 10. This change is determined by alpha spectrometry on electro-deposited sources using a solid-state silicon surface barrier detector coupled to a multichannel analyzer. The validity of a simple method based on the geometric progression decrease for the far tail of the spectrum to correct for the tail contribution of 238Pu (5.50-MeV) peak to the low energy 239Pu + 240Pu (5.17-MeV) peak is established. Results for the plutonium concentration on different irradiated fuel dissolver solutions with burnup ranging from 1000 to 100 000 MWd/tU are presented and compared with those obtained by IDMS. The values obtained by IDAS or R-IDAS and IDMS agree to within 0.5%.
