Measuring and testing – With fluid pressure – Leakage
Patent
1995-01-05
1996-06-18
Brock, Michael J.
Measuring and testing
With fluid pressure
Leakage
340605, 364509, 364558, G01M 328
Patent
active
055266797
ABSTRACT:
A pressure decay leak detection system is calibrated for a particular piping system using a leak mechanism with a known leak rate attached to the piping system. Pressure decay in the piping system is monitored while the system is leaking, pressure versus time data defining an acceptable pressure decay profile is stored. In one embodiment, this data is scaled to obtain a profile applicable to different leak rates. The detection system performs a test by sensing decaying pressure in the piping system, determining a slope of measured pressure decay versus time for an increment of pressure decay, comparing a slope of the observed pressure decay with a slope of the acceptable pressure decay profile, and providing a failure indication if the slope of the observed pressure decay exceeds the slope of the acceptable pressure decay profile.
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Filippi Ernest A.
Miller Kenneth L.
Brock Michael J.
Campo/Miller
Smith Evan R.
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