METHOD FOR SELECTIVE PIN-POINTING OF UTILITY GAS LEAKS
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United States of America Patent
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Issued Date -
Apr 21, 2016
app pub date -
Mar 10, 2014
filing date -
Mar 11, 2013
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Abstract
A method for detecting the location of a gas leak 22 in buried utility gas pipes 12 by measuring the presence of a gas 18 below or above the ground surface 14 above the pipe 12 is improved by injecting a tracer gas 18 which is lighter than air into the utility gas 26 within the pipe 12 and by using a gas detector 28 having a higher sensitivity to the tracer gas 18 than to the utility gas 26 for pin-pointing the leak position 22.
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