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Division Spotlight
Robotics & Remote Systems
The Mission of the Robotics and Remote Systems Division is to promote the development and application of immersive simulation, robotics, and remote systems for hazardous environments for the purpose of reducing hazardous exposure to individuals, reducing environmental hazards and reducing the cost of performing work.
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.
Sadao Uchikawa
Nuclear Technology | Volume 33 | Number 1 | April 1977 | Pages 17-29
Technical Paper | Reactor | doi.org/10.13182/NT77-A31760
Articles are hosted by Taylor and Francis Online.
A three-dimensional boiling water reactor (BWR) core simulation program, COSMO-2, has been developed on the basis of a few-group coarse-mesh diffusion scheme with one mesh per assembly, in which the accuracy is improved by use of effective diffusion coefficients to accurately evaluate the net neutron current at the interface between neighboring assemblies. As an experimental verification of the COSMO-2 model, the first-cycle operation of a typical BWR is simulated, and the accuracy of the simulation is evaluated quantitatively in terms of standard deviation from the measured whole-core traveling in-core probe (TIP) data. To calculate the TIP reading from fuel assembly power obtained from COSMO-2, the relation between TIP reading and average power of fuel assemblies is generated by a three-dimensional local core analysis program, FASMO. Good agreement is obtained between measurement and calculation. The maximum value of the root-mean-square (rms) error is 6.3%, including the asymmetric nature of measured data and the measurement uncertainty (3% in rms).