Method for detecting leaks in underground product lines

Details Method for detecting leaks in underground product lines Method for detecting leaks in underground product lines

G - Physics

01

M

G01M 3/28 (2006.01)

Patent

CA 2150831

An improved method for detecting small leaks in underground pressurized piping systems is disclosed and claimed herein. In particular, the method comprises the steps of taking pressure measurements over identical time intervals from a product line at a pressure above the pump discharge pressure while the product pump is running. Thereafter, the absolute value of the difference between successive pressure decays is calculated and compared to an acceptable value. Next, the value of the latest pressure decay value is compared to acceptable and unacceptable values reflecting acceptable and unacceptable tightness of the product line.

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