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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
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
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
TerraPower begins U.K. regulatory approval process
Seattle-based TerraPower signaled its interest this week in building its Natrium small modular reactor in the United Kingdom, the company announced.
TerraPower sent a letter to the U.K.’s Department for Energy Security and Net Zero, formally establishing its intention to enter the U.K. generic design assessment (GDA) process. This is TerraPower’s first step in deployment of its Natrium technology—a 345-MW sodium fast reactor coupled with a molten salt energy storage unit—on the international stage.
Vishnu B. Subrahmanyam, Dwayne R. Speer
Nuclear Technology | Volume 86 | Number 2 | August 1989 | Pages 207-213
Technical Paper | Decontamination and Decommissioning / Radioactive Waste Management | doi.org/10.13182/NT89-A34272
Articles are hosted by Taylor and Francis Online.
Transuranic waste isotope activity of 0.11 TBq (2.93 Ci) was found in 40 replaceable cartridges of a deep-bed fiberglass filter assembly. An investigation was initiated to provide information required for preparation of safety analyses and decommissioning plans. The filter assembly was suspected to contain 4 TBq (100 Ci) of plutonium, based on ambient neutron flux, confirmed by thermoluminescent dosimeters, and quantified by passive activation of indium foils. However, chemical analyses of smear samples are not consistent with this predicted activity. Americium-241, 244Cm, and isotopes of plutonium are identified by chemical separations and alpha energy analysis of dissolved smears. Isotopic composition based on measured relative alpha activities is used to establish the transuranic content. A major fraction of the observed ambient neutron flux is attributable to 244Cm, a nontransuranic radionuclide.
