International Standards Update
Debbie Angerman, US TAG ISO TC 197


ISO TC 196 WG 8: Hydrogen Generators
The Draft International Standard (DIS) vote on ISO/DIS 22734-1, Hydrogen generators using water electrolysis process-Part 1: Industrial and commercial applications passed. Comments have been referred back to WG8 before proceeding to FDIS (Final Draft International Standard) Approval voting.

ISO/CD 22734-2 Hydrogen generators using water electrolysis process * Part 2: Residential applications, is circulated for comments until 2 May 2006 with the purpose of reaching consensus on the technical content of the document. The committee draft is a product of WG8. US TAG members are asked to carefully study the text and submit all pertinent comments at this stage. Please e-mail your comments to Debbie Angerman no later than April 14.

Hydrides
The second committee draft (CD) ISO 16111 Transportable gas storage devices --Hydrogen absorbed in reversible metal hydride, is being circulated for approval among the P-members of ISO/TC 197. U.S. TAG members are reminded to e-mail your vote and any comments using the comments template to Debbie Angerman.

This second committee draft has been prepared by ISO/TC 197 WG 10. Ned Stetson, US, is the convener. It replaces ISO/TC 197 document N 304 and addresses the comments that were received during its circulation. The TC 197 Secretary will forward this second CD to ISO/TC 58/SC3 Gas cylinder design so that they can provide their comments as well.

Liquid Hydrogen
The deadline for submitting responses to N316, 5-Year Systematic review of ISO 13984:1999, Liquid hydrogen--Land vehicle fueling system interface has been extended until March 6. Members of the U.S. TAG are asked to provide a response to the 5-year systematic review questionnaire. Note that participants are requested to work on this standard if the decision is to revise it. Participants are asked to comment and provide expertise. Attendance at meetings, although preferred, is not a requirement to participate.

Call for Participants
ISO/TC 197 is inviting hydrogen experts to join its ad hoc group on hydrogen components. The work of the ad hoc group is to prepare the following:

• A list of existing international standards that can be used as is for hydrogen applications
  
  
• A list of existing international standards that can be used for hydrogen applications with a few modifications
  
  
• A list of components for which no existing international standard is recognized as being suitable for hydrogen use or for which existing international standard would require many changes to be considered suitable for hydrogen applications.

As the task at hand is quite specific to hydrogen, the ad hoc group is looking for experts that are knowledgeable in the field of hydrogen components. Specifically, the ad hoc group is looking for experts that are involved in the manufacturing or use of any of the following hydrogen components:

• Hydrogen ground storage tanks
• Metal hydride storage tanks (stationary and onboard)
• Liquid hydrogen refueling connectors
• Interface between the filling station and vehicles
• Dispensers
• Pumps
• Compressors
• Pressure relief valves
• Burst discs
• Automatic shut-off valves
• Manual shut-off valves
• Check valves
• Pressure regulators
• Pressure gauges
• Hydrogen flow meters
• Rigid pressure lines
• Flexible pressure lines
• Fittings
• Hydrogen injectors
• Hydrogen vent systems
• Detectors of hydrogen impurities
• Filters
• Hydrogen mass measurement devices
• Heat exchangers
• Seals
• Pressure sensors
• Level sensors
• Break away devices
• Hydrogen combustors

If you are interested in being part of this work, please contact your TAG Administrator.

ISO/TC 197 is inviting hydrogen experts to join its working groups WG 11 which deals with gaseous hydrogen refueling stations and WG 13 for hydrogen detectors

Specifically, ISO/TC 197 WG 11 is looking for experts that are involved in the design, manufacture or installation of hydrogen infrastructure.

ISO/TC 197 WG 13 is looking for experts that are concerned with hydrogen detection in stationary applications. The working group would benefit from the expertise of individuals representing manufacturers and users of hydrogen sensors.

Should you be interested in becoming a member of one of these ISO/TC 197 working groups or require further information, please contact your National TAG Administrator. If you do not know your TAG Administrator (Debbie Angerman in the US), you can contact the ISO/TC 197.

A working group expert is:

• nominated by P-members having agreed to participate in the project concerned, or by A-, D-liaison organizations, or by other ISO or IEC committees in liaison;
• acts in personal capacity, contributing on the basis of their own knowledge;
• expected to be resource persons to assist the project leader if requested;
• potentially serve as member of a working group if responsible committee decides to establish a working group. (From ISO Directives Supplement)