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U.S. National Work Group (USNWG)
The USNWG works to promote, encourage, and participate in the establishment of a comprehensive set of legal metrology standards for commercial measurement of hydrogen for vehicle and other refueling applications including (1) device design, accuracy, installation, and use requirements; (2) method of sale requirements; (3) test procedures; and (4) fuel quality standards. The ultimate goal is that these standards will ensure the accuracy of measurements, enhance consumer protection, foster fair competition, and facilitate economic growth and trade.
The USNWG works through in-person meetings, conference calls, and email. The USNWG is currently accomplishing its goals through two subcommittees; one will work to simultaneously develop equipment standards and test procedures and a second will develop fuel specification requirements.
Related LinksU.S. National Work Group GuidelinesU.S. National Work Group Agenda Submission FormDeveloping Commercial Hydrogen Measurement StandardsDevelopment of International StandardsAlternative Test Methods Work Group Meeting
The 101st National Conference on Weights and Measures (NCWM) Annual Meeting will be held July 23-28, 2016 in Denver, CO. Two proposals to modify NIST Handbook 44 Section 3.39 Hydrogen Gas-Measuring Devices-Tentative Code are voting items on NCWM Specifications and Tolerances (S&T) Committee agenda. S&T Item 339-1 is a proposal to recognize that required information on sealable metrological parameters may also be made available in an electronic format on Category 3 devices. S&T Item 339-2 is a proposal to temporarily widen the accuracy tolerances to include a new accuracy class. The USNWG will meet June 15, 2016 to discuss these proposals to and possibly provide input to the July 2016 NCWM.