Magnetic Particle Testing a Practical Experience Interpreting and Evaluating Indications of Gas Turbine Components

Incoming inspection of ferromagnetic serviced gas turbine components using fluorescent magnetic particle testing (MT) is a standard industry practice. This testing is primarily performed to inspect for any surface or subsurface cracks. Accurate interpretation and evaluation of observed indications is vital for determining whether localized repairs are required or if the component must be scrapped.