Process and apparatus for testing pipelines for leaks

Details Process and apparatus for testing pipelines for leaks Process and apparatus for testing pipelines for leaks

1975-04-29

1976-05-25

Swisher, S. Clement

Measuring and testing

With fluid pressure

Leakage

G01M 330

Patent

active

039584496

ABSTRACT:
Liquid-conveying pipelines are tested for leaks during inoperative periods. To this end, the pipeline is hermetically closed at its two ends and the pressure prevailing in the interior of the pipeline is continuously measured. Once the pressure prevailing therein is found to drop, a substitute liquid is conveyed through the pipeline in the quantity necessary to make up for that decrease in volume of the normally conveyed liquid which is caused by the relevant temperature drop, an alarm device is actuated if the pressure continues to drop, and the magnitude of the leak is ascertained as an inference from the quantity of substitute liquid introduced per unit time into the closed pipeline.

REFERENCES:
patent: 571725 (1896-11-01), Howe
patent: 1196828 (1916-09-01), Weatherson
patent: 2979939 (1961-04-01), Shuh

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