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

1984-05-07

1988-07-12

Terapane, John F.

Compositions

Leak detection

2524081, 252960, G01N 3122, C09K 300

Patent

active

047568542

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 nonstaining 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 means for preparing the indicator dye, means for applying the indicator dye to the test surface and means 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.

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