Underwater pipelines

Details Underwater pipelines Underwater pipelines

1975-12-01

1976-11-23

Queisser, Richard C.

Measuring and testing

With fluid pressure

Leakage

G01M 324

Patent

active

039929248

ABSTRACT:
A leak in an underwater liquid filled pipeline is located by moving a receiver capable of detecting ultrasonic energy of frequency in the range 20 to 70 kilohertz along a path parallel to the axis of the pipeline at a distance of 100 to 2000 feet from the axis of the pipeline measured in a horizontal plane. The receiver noise generated by liquid escaping from a leak is detected with the receiver.

REFERENCES:
patent: 2997689 (1961-08-01), Johnson et al.
patent: 3222635 (1965-12-01), Simpkins et al.
patent: 3261200 (1966-07-01), Long
patent: 3289465 (1966-12-01), Parker
patent: 3409897 (1968-11-01), Bosselaar et al.
patent: 3622958 (1971-11-01), Tucker et al.

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