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The division's objectives are to promote the advancement of knowledge and understanding of the fundamental physical phenomena characterizing nuclear reactors and other nuclear systems. The division encourages research and disseminates information through meetings and publications. Areas of technical interest include nuclear data, particle interactions and transport, reactor and nuclear systems analysis, methods, design, validation and operating experience and standards. The Wigner Award heads the awards program.
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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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BWXT announces nuclear manufacturing plant expansion
BWX Technologies announced today plans to expand and add advanced manufacturing equipment to its manufacturing plant in Cambridge, Ontario, Canada.
A $36.3 million USD ($50M CAD) expansion will increase the plant’s size by 25 percent—to 280,000 square feet—and another $21.7 million USD ($30M CAD) will be spent on new equipment to increase and accelerate its output of large nuclear components. The investment will increase capacity and create more than 200 long-term jobs for skilled workers, engineers, and support staff, according to the company.
Haihua Zhao, Per F. Peterson
Nuclear Technology | Volume 158 | Number 2 | May 2007 | Pages 145-157
Technical Paper | Nuclear Reactor Thermal Hydraulics | doi.org/10.13182/NT07-A3832
Articles are hosted by Taylor and Francis Online.
This paper presents an overview and a few point designs for multiple-reheat Brayton cycle power conversion systems (PCSs) using heat from high-temperature molten salts or liquid metals. All designs are derived from the General Atomics gas turbine-modular helium reactor (GT-MHR) power conversion unit (PCU). Analysis shows that, with relatively small engineering modifications, multiple GT-MHR PCUs can be connected together to create a PCS in the >1000 MW(electric) class. The resulting PCS is quite compact, and results in what is likely the minimum gas duct volume possible for a multiple-reheat system. To realize this, compact plate type liquid-to-gas heat exchangers (power densities from 10 to 120 MW/m3) are needed. Different fluids such as helium, nitrogen and helium mixture, and supercritical CO2 are compared for these multiple-reheat Brayton cycles. For turbine inlet temperatures of 900, 750, and 675°C, the net thermal efficiencies for helium cycles are 56, 51, and 48%, respectively, and corresponding PCU power densities are 560, 490, and 460 kW(electric)/m3, respectively. The very high PCU power densities could imply a large material saving and low construction cost, and bring down the specific PCU cost to about half that of the current GT-MHR PCS design.