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31 maj 2023 · This article covers the guidelines for positive material identification (PMI) of pressure-retaining alloy material components, alloy bolting, welding consumables, welds, weld overlays and cladding. PMI examination may be carried out at the fabricators, vendors or material suppliers facility.
SCOPE. 1.1 This standard establishes basic requirements for conducting Positive Material Identification (PMI) tests on ferrous and nonferrous metal alloy materials using portable x-ray emission type equipment, which is currently available for production shop and construction site verification of these materials.
Positive material identification can prevent potential product failure in manufacturing. At oil and gas, power generation and pharmaceutical plants, pre-service and in-service inspection of critical components and welds with PMI can prevent breakdown and its costly consequences.
PURPOSE AND USE OF PROCESS INDUSTRY PRACTICES. In an effort to minimize the cost of process industry facilities, this Practice has been prepared from the technical requirements in the existing standards of major industrial users, contractors, or standards organizations.
With Positive Material Identification (PMI) the alloy composition, and thus, the identity of materials can be determined. If a material certificate is missing or not clear and you need to be certain about the type of material used, PMI is the solution.
10 paź 2019 · Positive material identification (PMI) is essential to verify the grade and composition of stainless steel before releasing into production. Using the wrong grade can damage machining equipment, result in field failure or flout industry regulations.
The Positive Material Identification tests, or also known as PMI test, are of great importance for the traceability of components. This non-destructive testing serves as a proof of the alloying constituents present in the material, confirming the melting analysis of the material contained in the 3.1 certificate.
