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Human Factors, Instrumentation & Controls
Improving task performance, system reliability, system and personnel safety, efficiency, and effectiveness are the division's main objectives. Its major areas of interest include task design, procedures, training, instrument and control layout and placement, stress control, anthropometrics, psychological input, and motivation.
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2024 ANS Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
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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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Latest News
New laws offer nuclear industry incentives for existing power plant uprates
This year, the U.S. nuclear industry received a much-needed economic boost that could help preserve operating nuclear power plants and incentivize upgrades that extend their lifespan and power output.
Signed into law in 2022, the Inflation Reduction Act offers production tax credits (PTCs) for existing nuclear power plants and either PTCs or investment tax credits (ITCs) for new carbon-free generation. These credits could make power uprates—increasing the maximum power level at which a commercial plant may operate—a much more appealing option for utilities.
Tsung-Kuang Yeh, Mei-Ya Wang
Nuclear Science and Engineering | Volume 161 | Number 2 | February 2009 | Pages 235-244
Technical Paper | doi.org/10.13182/NSE161-235
Articles are hosted by Taylor and Francis Online.
It is currently a common practice that a boiling water reactor (BWR) adopts hydrogen water chemistry (HWC) for mitigating corrosion in structural components in its primary coolant circuit (PCC). The optimal feedwater hydrogen concentration ([H2]FW) varies from plant to plant and is usually set at a constant value. When the core flow rate (CFR) in a BWR is changed, the coolant residence time in the PCC would be different. The concentrations of major redox species (i.e., hydrogen, oxygen, and hydrogen peroxide) in the coolant may accordingly vary because of different radiolysis durations in the core and other near-core regions. A theoretical code by the name of DEMACE was used in the current study to investigate the impact of various CFRs (from 100 to 80.6%) on the effectiveness of HWC in a domestic BWR. Our analyses indicated that the HWC effectiveness could be downgraded because of an increase in CFR at locations such as upper downcomer, recirculation system, and lower plenum. However, the HWC efficiency at the upper plenum area did not vary with either increasing or decreasing CFRs. The impact of CFR on the HWC effectiveness is therefore expected to vary from location to location in a BWR and eventually from plant to plant.