Protective coatings and linings are designed to prevent corrosive environments from reaching the underlying substrate. Even a small pinhole, void or discontinuity can create a pathway for corrosion and ultimately lead to premature failure. NNDT provides Spark/Holiday Detection to identify discontinuities in non-conductive coatings and linings that may not be visible during visual inspection. The technique provides clients with confidence that protective systems have been applied correctly and are free from defects before assets are placed into service or returned to operation.
