Measuring and testing – With fluid pressure – Leakage
Patent
1992-03-31
1993-06-01
Williams, Hezron E.
Measuring and testing
With fluid pressure
Leakage
G01M 326
Patent
active
052149579
ABSTRACT:
Device and method to achieve a low pressure pressurisation test in order to evaluate the integrity and the leak rate of a hermetic building. After the pressurisation to about a few kilopascals of the building and of a reference volume within said building, the reference volume is isolated and the evolution of the differential pressure as a function of time between the two is measured with a differential manometer. The tubes of the reference volume can be made of copper tubes welded together and the reference volume divided in sections wherein the volume of each section is a scale representation of the volume of a corresponding building zone. The use of a reference volume within the building allows temperature variations to be compensated. The device and the method further comprise the use of a sampling network circuit which is used to collect samples of air throughout the building and allow the partial pressure variation of some gases to be compensated for. This device and method are very suitable for the building of a nuclear power plant.
REFERENCES:
patent: 3357257 (1967-12-01), Herndon et al.
patent: 4420969 (1983-12-01), Saum
patent: 4510791 (1985-04-01), Yuill
Hydro-Quebec
Roskos Joseph W.
Williams Hezron E.
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