Flow measurement
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United States of America Patent
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Oct 24, 1989
Grant Date -
N/A
app pub date -
Nov 9, 1987
filing date -
Nov 24, 1986
priority date (Note) -
Expired
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Abstract
A method and an apparatus are provided for measuring the flow rate of a fluid in a duct, for example in an under-sea crude oil pipeline, in which samples of a radioactive tracer are injected, at intervals, into the duct and the passage of the samples of tracer detected by a scintillator. The tracer is generated by irradiating a large volume of a liquid obtained from the environment of the duct with a neutron source, so that the sample has been irradiated for a prolonged period prior to injection.
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