The International Organization for Standardization

William S. Lerner is on six ANSI (American National Standards Institute) accredited U.S. Technical Advisory Groups (TAGs) for the International Organization for Standardization (ISO):
• ISO/TC 197 Hydrogen Technologies
• ISO/TC 58 - Gas cylinders
• ISO/TC 58/SC 2 - Gas fittings
• ISO TC 58/SC 3 - Cylinder design
• ISO/TC 58/SC 4 - Operational requirements for gas cylinders
• ISO/TC 220-Cryogenic vessels

He is also an officially registered U.S. expert on eleven ISO Working Groups (WGs) in the hydrogen technologies sectors:
• ISO/TC 197/WG 5 - Gaseous hydrogen land vehicle refueling connection devices.
• ISO/TC 197/WG 22 - Gaseous hydrogen fueling station hoses.
• ISO/TC 197/WG 23 - Gaseous hydrogen fueling station fittings.
• ISO/TC 197/WG 24 - Gaseous hydrogen fueling stations-general requirements.
• ISO/TC 197/WG 19 - Gaseous hydrogen fueling station dispensers – general requirements.
• ISO/TC 197/WG 21 - Gaseous hydrogen fueling station compressors.
• ISO/TC 58/SC 3/WG 17 - Compressed natural gas cylinders for road vehicles.
• ISO/TC 58/SC 3/WG 27 - Composite cylinders.
• ISO/TC 58/SC 3/WG 33 - Refillable seamless stainless steel gas cylinders.
• ISO/TC 58/SC 3/WG 7 - Compatibility between gases and materials.
• ISO/TC 58/SC 2/WG 6 - Gas cylinder valves-Specifications and testing.

His stakeholder category for all WG's is: Industry and Commerce.

These WGs include hydrogen filling stations components, hoses, and composite cylinders, etc. 197 WGs are responsible for the safety and performance of hydrogen filling stations, and dispensing equipment, for all participating countries. TC 58/SC3-United Nations Model Regulations (UN Orange Book): "Recommendations on the Transport of Dangerous Goods Model Regulations." Which includes, but is not limited to: General requirements on design, construction, pressure testing of receptacles, new designs, linear burst testing, initial inspection, fire resistance testing (bonfire test), and high velocity impact (gunfire) testing, etc.

ISO TC58/SC 3/ WG27's standards proposals are now replacing the US (DOT- Department of Transportation) and Canada (Canadian Transportation Agency) national standards. This process is in place, and being implemented. The Working Group presents the proposals to the TAG for ballot. Additionally, I am a US voting delegate, and vote on the proposals. At any give time, there are roughly ten registered ANSI (American National Standard Institute) voting delegates per TAG who cast the standards votes for the USA.

ISO/TC 220/TG 1. Task Group (TG 1) is responsible for the preparation and review of ISO 22103, Cryogenic vessels — Tanks for liquefied natural gas on-board storage — Operational requirements for automotive vehicles. Stakeholder Category: Industry and commerce. ANSI (American National Standards Institute) Registered US Expert.

Stakeholder Advisory Board Member, Metrology for Hydrogen Vehicles (MetroHyVe)

  • A large hydrogen infrastructure is currently in development across Europe however the industry faces the dilemma that they are required to meet certain measurement requirements (set by European legislation) that cannot currently be followed due to the lack of available methods and standards. The EMPIR Metrology for Hydrogen Vehicles will be the first large scale project of its kind that will tackle these measurement challenges.

  • The current state-of-the-art for the objectives above and the planned outcomes from this project are:

  • Flow metering – Currently there is no capability for calibrating hydrogen flow meters to be used at HRSs for monitoring the amount of hydrogen dispensed into the vehicle up to pressures of 875 bar (required for stations providing hydrogen at NWP of 700 bar). The JRP will develop a gravimetric method to calibrate and verify flow meters with hydrogen at a NWP of 700 bar, as well as new methods which allow non-flammable substances to be used to calibrate these flow meters such as nitrogen, air or water.

  • Hydrogen quality assurance – To support hydrogen purity testing as specified in ISO 14687 by developing traceable offline gas analysis methods, stable and accurate primary reference gas mixtures and the metrological tools to enable the introduction of low cost gas analyzers suitable for use by commercial gas analysis laboratories. In addition, to develop a robust method for accurately performing online measurement of particulates (to determine whether levels are above or below 1 mg/kg) in hydrogen provided at the refueling station, as specified in ISO 14687 (WP2, M1-36).

  • Hydrogen quality control – To perform purity measurements of hydrogen following the implementation of quality control techniques specified in ISO 19880-8 and validate continuous online hydrogen purity analyzers for measuring canary species (the key impurities that guarantee global quality of the hydrogen) at the HRS (WP3, M1-36).

  • Sampling – To develop a robust protocol for taking a representative sample of hydrogen gas from a refueling station and testing suitability of high pressure sampling vessels for delivering hydrogen to gas analysis laboratories for offline purity analysis; as required by ISO 14687 (WP4, M1-36).

  • Creating impact – To facilitate the take up of the technology and measurement infrastructure developed in the project by the measurement supply chain (accredited laboratories, instrument manufacturers), standards developing organizations (ISO, CEN/CENELEC) and end users (hydrogen industry, vehicle manufacturers and suppliers) (WP5, M1-36).