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Division Spotlight
Decommissioning & Environmental Sciences
The mission of the Decommissioning and Environmental Sciences (DES) Division is to promote the development and use of those skills and technologies associated with the use of nuclear energy and the optimal management and stewardship of the environment, sustainable development, decommissioning, remediation, reutilization, and long-term surveillance and maintenance of nuclear-related installations, and sites. The target audience for this effort is the membership of the Division, the Society, and the public at large.
Meeting Spotlight
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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
BWXT will scout potential TRISO fuel production sites in Wyoming
BWX Technologies Inc. announced today that its Advanced Technologies subsidiary has signed a cooperation agreement with the state of Wyoming to evaluate locations and requirements for siting a potential new TRISO nuclear fuel fabrication facility in the state.
Robert J. Teitel, John B. Brown
Nuclear Technology | Volume 1 | Number 1 | February 1965 | Pages 13-24
Technical Paper | doi.org/10.13182/NT65-A20459
Articles are hosted by Taylor and Francis Online.
The Liquid Metal Breeder (LIMB) reactor is an internally-cooled fluid fuel reactor based upon a Th232-U233 thermal breeder cycle. It employs a molten lead coolant, a uranium-bismuth solution fuel, a thorium bismuthide dispersion in lead-bismuth blanket fluid and a graphite moderator. Heat from the fuel is transferred through a graphite fuel element to the coolant which transports the heat to an external boiler and pump. This arrangement overcomes the major disadvantages found in previous “externally-cooled” liquid-metal-fuel reactors. Equilibrium concentrations of uranium isotopes heavier than U233 and other reasonable assumptions were derived from existing information and then used to develop a broad survey of LIMB reactor sizes. Two sizes, 200 and 1000 MW(th), were chosen for more detailed evaluation. The 200 MW(th) has a potential breeding ratio of 1.08 and an 8 year doubling time. The 1000 MW(th) reactor has a breeding ratio of 1.05 and a 12 year doubling time. Using the most pessimistic estimates on processing could reduce the breeding ratio, while improvements in design and the utilization of low-cross-section coolants can counteract these losses. LIMB reactor technology can lead to an efficient breeder, even in large power sources, and warrants further engineering evaluations.