Emergency and back-up cooling of nuclear fuel and reactors and fire-extinguishing, explosion prevention using liquid nitrogen
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United States of America Patent
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Jan 30, 2018
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N/A
app pub date -
Jul 18, 2016
filing date -
Mar 16, 2012
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Abstract
A system for fighting a fire includes a plurality of containers containing liquid nitrogen. Thermally activated release mechanisms are each connected to one of the containers. Each thermally activated release mechanism is configured to release the liquid nitrogen from a connected container when a predetermined safety threshold temperature is reached, so that the released liquid nitrogen produces an expanding volume of cold nitrogen vapor. A central storage container stores liquid nitrogen. The central storage container is connected to each of the plurality of containers. A sensor system activates refilling of a respective container with liquid nitrogen from the central storage container when the amount of liquid nitrogen in the respective container is below a predetermined threshold.
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