B - Operations – Transporting – 67 – D
Patent
B - Operations, Transporting
67
D
340/145, 116/66.
B67D 7/14 (2010.01) B67D 7/06 (2010.01) G01M 3/28 (2006.01)
Patent
CA 1114916
LEAK DETECTION SYSTEM AND METHOD FOR FLUID DELIVERY PIPING Abstract of the Disclosure A system and method for detecting leaks in an underground piping network supplying liquid petroleum products pumped from an underground storage tank to an aboveground dispenser outlet. A highly sensitive flow detector situated in a parallel looped bypass arrangement is selectively operated for ascertaining existence or non-existence of a piping leak. Following a suf- ficient time lapse of non-dispensing for enabling temperature stabilization of the piping network to occur, the detector is actuated in a controlled sequence of go, no-go steps that cul- minates in ascertaining existence or non-existence of a piping leak while at the same time eliminating any false indication occasioned by detector malfunction. 1a
298156
Gerstenmaier William J.
Todd John A.
Dresser Industries Inc.
Macrae & Co.
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