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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
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
Four million nuclear jobs by 2050: Who will do them?
Industry leaders from around the globe met this month to discuss the talent development that will be necessary for the long-term success of the nuclear industry.
The International Conference on Nuclear Knowledge Management and Human Resources Development, hosted by the International Atomic Energy Agency, was held in Vienna earlier this month. Discussed there was the agency’s forecast for nuclear capacity to more than double—or hopefully triple—by 2050 and the requirement of more than four million professionals to support the industry.
DeeEarl Vaden
Nuclear Technology | Volume 88 | Number 3 | December 1989 | Pages 325-331
Technical Paper | Technique | doi.org/10.13182/NT89-A34315
Articles are hosted by Taylor and Francis Online.
The hydrogen meter leak detectors at the Experimental Breeder Reactor II (EBR-II) are periodically checked with a vacuum ionization gauge to see if the leak detectors are calibrated. The gauge, which measures equilibrium pressure, requires an equation to convert the gauge pressure to the hydrogen concentration in sodium. The original equationH, ppm = 10.30 * (Pg, Torr)1/2 is derived from Sievert’s law with adjustments for gauge sensitivity to hydrogen and thermal transpiration effects. EBR-II experience has shown that the Sievert’s law equation has not been reliable in accurately determining the hydrogen concentration in sodium. It is also difficult to determine the hydrogen gauge sensitivity, which can change with time. EBR-II has developed a new equation over a hydrogen range of 0.063 to 0.230 ppm,H, ppm = 0.016 + 10.10 * (Pg, Torr)1/2 , by using a frit-type plugging meter to determine the hydrogen concentration when an equilibrium pressure measurement is done. With sodium hydride as the predominant impurity, the impurity saturation temperature (plugging temperature) measured with the plugging meter can be used to calculate the hydrogen concentration. Measuring the equilibrium gauge pressure and plugging temperature at various hydrogen impurity levels provides the data to accurately calibrate the vacuum ionization gauge without measuring or estimating the gauge sensitivity, gauge temperature, or Sievert’s law constant.