Method for checking pipes or pipe networks for leaks

Details Method for checking pipes or pipe networks for leaks Method for checking pipes or pipe networks for leaks

1983-10-31

1986-09-02

Levy, Stewart J.

Measuring and testing

With fluid pressure

Leakage

73 491, G01M 300

Patent

active

046088571

ABSTRACT:
A method is provided for leak checking pipes or pipe networks wherein the leak check is effected by means of liquid under pressure in that a pressure change is determined. To improve the leak check by excluding temperature caused pressure changes, the liquid pressure in the pipes, pipe networks or pipe sections thereof is set to at least two different pressure levels as initial pressure for at least one respective pressure change determination. From the time standardized pressure changes associated with different initial pressures, a time standardized pressure change difference is formed and is compared with an allowed value with reference to the unit of time. A leak is determined to exist if the pressure change difference is greater than the allowed value.

REFERENCES:
patent: 3702074 (1972-11-01), Mullen
patent: 3958449 (1976-05-01), Drescher et al.
patent: 3962905 (1976-06-01), Jouve

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