Method and apparatus for detecting hydrocarbon fuel leaks

Details Method and apparatus for detecting hydrocarbon fuel leaks Method and apparatus for detecting hydrocarbon fuel leaks

1986-09-08

1988-05-24

Levy, Stewart J.

Measuring and testing

With fluid pressure

Leakage

436 3, G01M 320

Patent

active

047457970

ABSTRACT:
A method of and apparatus for detecting fuel leaks employing color variable indicators are disclosed. The method comprises the steps of preparing and applying a water soluble non-staining indicator dye to a test surface, observing color changes indicative of hydrocarbon leaks and removing the indicator dye from the test surface. The apparatus comprises in combination an apparatus for preparing the indicator dye, a spray apparatus for applying the indicator dye to the test surface and surface cleaning apparatus for removing the dye from the test surface. The indicator dye comprises a major portion of a dry inert mineral carrier and from about 0.1 to about 5.0 weight percent of a direct dye which is non-staining on painted surfaces and which does not migrate into or penetrate polyurethane or epoxy resin base painted surfaces.

REFERENCES:
patent: 3006861 (1961-10-01), Browning et al.
patent: 3027754 (1962-04-01), Alquist et al.
patent: 3856465 (1974-12-01), Lipscomb

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