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MSS - SP-137

Quality Standard for Positive Material Identification of Metal Valves, Flanges, Fittings, and Other Piping Components

active, Most Current
Organization: MSS
Publication Date: 1 January 2013
Status: active
Page Count: 12
scope:

This Standard Practice provides methods and acceptance standards for Positive Material Identification (PMI) of metal flanges, fittings, valves, pressure boundary parts of valves, and other piping components.

The instrumentation used for PMI testing covered by this Standard Practice shall be optical spectroscopy or X-ray fluorescence.

This Standard Practice is applicable to the identification process, at point of final inspection or in-process inspection during manufacturing.

The PMI test is for material grade identification only and does not substitute for a manufacturer's test report or a laboratory's chemical analysis.

Document History

SP-137
January 1, 2013
Quality Standard for Positive Material Identification of Metal Valves, Flanges, Fittings, and Other Piping Components
This Standard Practice provides methods and acceptance standards for Positive Material Identification (PMI) of metal flanges, fittings, valves, pressure boundary parts of valves, and other piping...
May 1, 2007
Quality Standard for Positive Material Identification of Metal Valves, Flanges, Fittings, and Other Piping Components
This Standard Practice provides methods and acceptance standards for Positive Material Identification (PMI) of metal flanges, fittings, valves, and pressure boundary parts of valves and other piping...

References

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