Inerting method and apparatus for preventing and extinguishing fires in enclosed spaces
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United States of America Patent
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May 25, 2004
Grant Date -
May 22, 2003
app pub date -
Jan 8, 2003
filing date -
Mar 18, 1998
priority date (Note) -
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Abstract
Inerting method and apparatus reduce the risk of and extinguish fires in an enclosed space. The method provides that the oxygen content in the space is reduced to a set base inerting level and, in the event of a fire, is quickly further reduced to a complete inerting level. For carrying out the method, the apparatus includes an oxygen measuring device for the enclosed space, with a first system for producing the oxygen-expulsion gas or for extracting oxygen from the enclosed space, with a second system for rapidly feeding an oxygen-expulsion gas into the space being monitored, and with a fire detection device for detecting a fire characteristic in the enclosed space. A control unit sends a base inerting signal to the first system in accordance with the oxygen content in the enclosed space, and sends a complete inerting signal to the second system in accordance with a detection signal from the fire detection device.
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