Positive Material Identification (PMI)
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PMI Recommended Practices
PMI Recommended Practices
PMI is a widely adopted non-destructive testing method and there are several standards and recommended practices for it. The American Petroleum Institute recommended practice, API RP 578 – Material Verification Program for New and Existing Alloy Piping Systems, provides the guidelines for a quality assurance system to verify the alloy components. Another widely used PMI guide is ASTM E1476 is a Standard Guide for Metals Identification, Grade Verification, and Sorting. Both of these documents cover the use of the handheld XRF and other applicable techniques.
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