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Division Spotlight
Nuclear Installations Safety
Devoted specifically to the safety of nuclear installations and the health and safety of the public, this division seeks a better understanding of the role of safety in the design, construction and operation of nuclear installation facilities. The division also promotes engineering and scientific technology advancement associated with the safety of such facilities.
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.
J. E. LeSurf, G. M. Allison
Nuclear Technology | Volume 29 | Number 2 | May 1976 | Pages 160-165
Technical Paper | Material | doi.org/10.13182/NT76-A31575
Articles are hosted by Taylor and Francis Online.
Experiments in reactor loops have established relationships among ammonia decomposition rate, ammonia and hydrogen concentrations, and energy deposition in boiling water. These relationships predicted an approximate ammonia decomposition rate in the 250-MW(e) CANDU-BLW, G-1 pres-sure-tube reactor of 20 g NH3/h per MW(th), 25% less than the total loss rate measured on the reactor. When the ammonia concentration in the water phase at exit from the reactor channels is kept above 7 mg/kg, the nitrate concentration in the recirculating water is ≈0.1 mg/kg and oxygen is <10 µg/kg- Experiments in the Halden Boiling Heavy Water Reactor demonstrated that the method is applicable to pres sure-vessel reactors, but larger decomposition rates of ammonia will occur. Other factors to consider are large volumes of N2 and H2 to the off-gas system, increased radiation fields around the turbine, and reduced efficiency of ion-exchange resins.