Positive Material Identification
Positive Material Identification (PMI) is a non-destructive testing (NDT) method to verify the chemical composition of metals and alloys, preventing accidents and product failures by ensuring materials meet their designated grade and specifications. The most common techniques are X-ray Fluorescence (XRF) and Optical Emission Spectrometry (OES), which provide on-the-spot analysis of metals and alloys. PMI is crucial in industries like power, oil, and gas to prevent corrosion, failure of pressurized systems, and ensure the integrity of welds and other components.