Holiday Testing For Painting

Holiday test inspection on paint coating of fuel tank shiva kumar gampa ndt testing.

Holiday testing for painting. Holiday test for pipe holiday detector is suitable for all types of coatings like fusion bonded epoxy coal tar epoxy paints polyester polyurethane pipeline tapes heat shrinks and asphalt. Therefore it is best to perform the test in a regular pattern similar to a pattern used for spray painting. The holiday test must be performed over the entire sur face.

Low voltage wet sponge testers and high voltage spark testers. There are various techniques and equipment available for holiday detection. Holiday testing allows the detection of even smallest coating flaws invisible to the naked eye.

This standard is intended for reference in coating specifications or other documents and may be used by specifiers applicators and coating inspectors if a specification requires holiday detection. The test involves checking of an electric circuit to see if current flows to complete the electrical circuit. Holiday continuity test on coatings.

Pay special attention to nuts bolts washers rivets etc. D5162 15 standard practice for discontinuity holiday testing of nonconductive protective coating on metallic substrates discontinuities metallic substrate high voltage spark testers low voltage wet sponge non conductive protective coatings. Holiday test or a continuity test is one of the non destructive test method applied on protective coatings to detect unacceptable discontinuities such as pinholes and voids.

The sponge will not conform to the entire surface when dragged over a bolt or a nut and threaded shaft for exam ple. Holiday testing allows the detection of even smallest coating flaws invisible to the naked eye. These tools called holiday detectors are portable devices that are swept across the coated surface.

Holiday test or a continuity test is one of the non destructive test method applied on protective coatings to detect unacceptable discontinuities such as pin. Holiday test is used to detect holes known as holidays or discontinuities in a coating. Holiday tester is versatile unit can be used to inspect protective coatings applied to pipelines tanks pilings fire lines or buried pipelines of.