![]() LATEST RELEASE: April 2021 MSS PUBLISHES REVISED STANDARD FOR RECOMMENDED RULES AND GUIDELINES FOR SI (METRIC) DATA MSS announces that SP-86-2021, Recommended Rules and Guidelines for SI (Metric) Data in MSS Standards, has been revised and published … April 2021 MSS PUBLISHES REVISED QUALITY STANDARD FOR MAGNETIC PARTICLE EXAMINATION OF STEEL CASTINGS AND FORGINGS FOR VALVES, FLANGES, FITTINGS, AND OTHER PIPING COMPONENTS MSS announces that SP-53-2021, Quality Standard for Steel Castings and Forgings for Valves, Flanges, Fittings, and Other Piping Components, has been revised and published …
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SP-45-2020
SP-53-2021
SP-86-2021
SP-88-2021
SP-93-2020
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Active American National Standard Projects (ANSI/MSS)
Updated: April 2021 Opened: March 2017 Project: 17-01-ANS Committee: C-115 Standard: SP-105-2016 Action: New INSTRUMENT VALVES FOR CODE APPLICATIONS Committee reported they will continue the ANSI canvas process concurrently with the SP-105 review/revision as of 5/9/2019. No further ANSI action since.
Updated: April 2021 Opened: October 2020 Project: 20-19-ANS Committee: C-304 Standard: SP-55-2011 Action: Revise QUALITY STANDARD FOR STEEL CASTINGS FOR VALVES, FLANGES, FITTINGS, AND OTHER PIPING COMPONENTS - VISUAL METHOD FOR EVALUATION OF SURFACE IRREGULARITIES (ANSI-APPROVED AMERICAN NATIONAL STANDARD) PINS period is over and staff informed Chair there were no inquiries or conflicts (12/14/2020).
Active MSS Standard Projects (New Standards)
Updated: April 2021 Opened: May 2016 Project: 16-20 Committee: C-114 Standard: New SP Action: New GUIDELINES FOR CLASSIFYING THE SEVERITY OF VALVE SERVICE CONDITIONS In committee ballot review (2/23/2021).
Updated: April 2021 Opened: February 2009 Project: 09-18 Committee: C-310 Standard: New SP Action: New INSTALLATION OF GEAR & POWER ACTUATORS Staff sent baseline draft to start work on (4/17/2019). No further updates since.
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