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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.
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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
Tank waste operations resume at Idaho’s IWTU
The Department of Energy’s Office of Environmental Management announced yesterday that waste processing operations have resumed at the Integrated Waste Treatment Unit (IWTU) at the Idaho National Laboratory Site. The resumption of operations follows the completion of two maintenance campaigns at the radioactive liquid waste treatment facility.
Kyoung-Ho Kang, Rae-Joon Park, Sang-Baik Kim, Seong-Wan Hong
Nuclear Technology | Volume 167 | Number 1 | July 2009 | Pages 211-222
Technical Paper | NURETH-12 / Thermal Hydraulics | doi.org/10.13182/NT09-A8863
Articles are hosted by Taylor and Francis Online.
Sustained heating experiments, named Experiments on Late-phase coolant Injection to ASsess the mitigation of focusing effect of metallic layer (ELIAS), were performed to quantify the boiling heat removal rate at the upper surface of a metallic layer for precise evaluations on the effect of a late-phase in-vessel coolant injection. Heat fluxes from the melt layer to the water pool varied from 250 to 550 kW/m2 depending on the surface temperature of the metallic layer. Comparison of boiling heat fluxes between the ELIAS experiments and the calculation using Berenson's film boiling correlation shows that effective heat removal was accomplished via late-phase coolant injection in the ELIAS experiments. In this study, a simple model was developed to evaluate the mitigation of focusing effect in the metallic layer via late-phase coolant injection. The ELIAS experimental data on the heat transfer rate at the upper surface of the metallic layer were used as input data in the simple model. The calculation results for the large-break loss-of-coolant accident in the APR1400 show that the risk induced by the focusing effect is highly dependent on the metallic layer thickness and an enhanced integrity of the reactor pressure vessel could be achieved via late-phase coolant injection during this time period.