Qa Qc Coating and Painting Inspector Interview Questions and Answers

Holiday test is a method used to detect defects or discontinuities in a coating by applying a high voltage to the surface.

• Holiday test is also known as a spark test or pinhole test.

• It involves applying a high voltage to the coated surface and using a holiday detector to detect any defects or discontinuities in the coating.

• The holiday detector emits a spark or sound when it detects a defect, indicating the presence of a holiday or pinhole in the coating.

• Holiday testing is comm...read more