Holiday Testing

A holiday test or a Continuity test is one of the non destructive test methods applied on protective coatings to detect unacceptable discontinuities such as pinholes and voids. The test involves checking of an electric circuit to see if current flows to complete the electrical circuit. If the electrical flow is detected then the test area is termed as conductive indicating the presence of discontinuities such as pinholes and voids. This test is commonly used in offshore industries where piping and structures are coated with nonconductor coating