USNWG COMMERCIAL H2 MEASMT STANDARDS – 2010 JUL MTG AGENDA

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U.S. National Work Group 

for the

Development of Commercial Hydrogen Measurement Standards

July 2, 2010

Joint Device Standards Subcommittee (DSS) and Fuel Specifications Subcommittee (FSS)

Tele/Web Conference Meeting

AGENDA

Time: Friday, July 2, 2010/3:00 p.m. – 4:30 p.m. ET-USA & Canada (GMT - 05:00)

Meeting Name: “H2 U.S. Nat’l Work Group Mtg”

NOTE: Please log into the web site first. On the attendee list click on the telephone icon and have the system 

call your telephone number. If that process does not work dial the number and enter the pass code listed below.

To join the meeting online: http://nist.na6.acrobat.com/usnwg-on-h2/

Call-In Telephone Number: 1-877-685-5350

Call-In Password: 908127

Audio Conference Only: *6 to MUTE or UNMUTE

This meeting is sponsored by the U.S. Department of Energy and U.S. Department of Commerce's National 

Institute of Standards and Technology.

Purpose: The U.S. National Work Group (USNWG) is meeting to continue its work to promote the 

establishment of a comprehensive set of (1) design, accuracy, installation, use, and method of sale requirements, 

(2) test procedures, and (3) quality standards for hydrogen fuel and equipment used in hydrogen measurements for 

vehicle and other refueling applications. 

ATTACHMENTS:

Appendix A Summary of the June 2010 USNWG Meeting

Appendix B USNWG's Responses to Input on the Draft Hydrogen Codes from the Fall 2009 

Regional Weights and Measures Associations and USNWG (rev.5)

Appendix C Draft 6.0 of the NIST Handbook 44 Hydrogen Gas-Measuring Devices Code

Appendix D Change Pages of Modifications to Draft 5.0 to Develop Proposed New Draft 6.0 of the 

NIST Handbook 44 Hydrogen Gas-Measuring Devices-Tentative Code

Appendix E Draft 3.1 Part A of the NIST Handbook 130 Uniform Laws and Regulations 
USNWG COMMERCIAL H2 MEASMT STANDARDS – 2010 JUL MTG AGENDA

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Glossary of Acronyms

ASTM American Society of Testing and 

Materials International

MPa megapascal

CaFCP California Fuel Cell Partnership NGV Natural Gas Vehicle

CDFA 

DMS 

(also 

CADMS)

California Department of Food and 

Agriculture, Division of Measurement 

Standards

NHA National Hydrogen Association

CSA Canadian Standards Association, 

Incorporated

NIST National Institute of Standards and 

Technology

DSS Device Standards Subcommittee NTP Normal Temperature and Pressure

EPO 29 Draft Hydrogen Gas Retail Motor-Fuel 

Dispenser Examination Procedure 

Outline (EPO) 29

OEM Original Equipment Manufacturer

FSS Fuel Specifications Subcommittee OIML International Organization of Legal 

Metrology

HB 44 NIST Handbook 44 Specifications, 

Tolerances, and Other Technical 

Requirements for Weighing and 

Measuring Devices (2009)

OIML R 

139

Recommendation for Compressed 

gaseous fuel measuring systems for 

vehicles

HB 130 NIST Handbook 130 Uniform Laws 

and Regulations in the Area of Legal 

Metrology and Engine Fuel Quality 

(2009)

RMFD Retail Motor-Fuel Dispenser

HGV Hydrogen Gas Vehicle S&T Specifications and Tolerances

ISO International Organization for 

Standardization 

SAE Society of Automotive Engineers

MMQ Minimum Measured Quantity SI International System of Units

MOS Method of Sale USNWG U.S. National Work Group

L&R Laws and Regulations

This table is meant to assist the reader in the identification of acronyms used in this agenda and does not 

imply that these terms are used solely to identify these organizations or technical topics. 
USNWG COMMERCIAL H2 MEASMT STANDARDS – 2010 JUL MTG AGENDA

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AGENDA TOPICS

3:00 P.M. (ET) 

(1) Welcome Current/New Members and Roll Call

New members of the USNWG and visitors will be welcomed, the meeting is called to order, time for roll call, and 

the meeting's purpose is reviewed. The collaborative work by the meeting's sponsors will be recognized. New 

participants will be invited to provide their name, affiliation, and state their specific area of interest in the work to 

develop hydrogen measurement standards.

(2) Administrative Business

The USNWG will discuss and decide on procedures for managing and documenting its technical work. The 

following item(s) will be addressed:

(a) Approve the Summary of the July 17, 2010 USNWG Meeting 

A draft summary (see Appendix A) of the June 17, 2010 tele/web conference meeting was emailed on June 19,

2010 to the work group for its review and approval by June 28, 2010. The Technical Advisor did not receive any

ballots as of 5:30 p.m. [ET] June 28th. The Technical Advisor sent a second ballot by email at 6:00 p.m. June 28th

as a reminder to the USNWG for its approval of the summary. The DSS Technical Advisor will ask for approval 

of the June meeting summary at the start of the July meeting. 

(b) Agenda Updates for July 2010

(3) Opportunity for Reports on Related Activities

The USNWG is working to harmonize, wherever possible, with related standards to encourage uniformity and to 

avoid contradictory requirements and trade barriers for U.S. industry. The USNWG Subcommittees will receive 

updates on work by organizations such as ASTM, CaFCP, DMS, NHA, OIML, SAE and other related activities as 

their work continues to progress. 

(4) Development of Device Standard, Method of Sale, and Test Procedures for Commercial Hydrogen 

Measurement

(a) Remaining Comments on the Draft Hydrogen Codes/USNWG Input to the July 2010 National 

Conference on Weights and Measures (NCWM)

The USNWG has held three meeting since January 2010 to further refine proposed draft 5.0 of the hydrogen 

device code. In preparation for input to the July 11-15, 2010 NCWM, the USNWG will finalize a summary of its

positions taken on comments (see Appendix B) received from the U. S. regional weights and measures 

associations that met fall 2009 and USNWG members that resulted in draft 6.0 of the hydrogen device code (see 

Appendix C) and draft 3.1 of the method of sale regulation (see Appendix E). The USNWG should also consider 

the list (Appendix D) of recent USNWG modifications to the proposed new Hydrogen Gas-Measuring Devices -

Tentative Code. The list was developed to assist stakeholders understand and identify changes the USNWG 

made to refine the requirements in Draft 5.0 and arrive at Draft 6.0 which it now recommends for a vote.
USNWG COMMERCIAL H2 MEASMT STANDARDS – 2010 JUL MTG AGENDA

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(5) Next Steps/Tasks

The next step in the standards development process, are the open hearing and voting sessions of the National 

Conference on Weights and Measures (NCWM). As NCWM Committee Agenda Voting Items, the proposals for 

a new NIST Handbook 44 Section 3.39 Hydrogen Gas-Measuring Devices - Tentative Code and NIST Handbook 

130 Method of Sale Regulation for Hydrogen are under the control of the NCWM S&T and L&R Committees. 

Please be aware that on July 12th each Committee will hear comments and possibly consider recommendations for 

changes to the proposed code from either the USNWG or any registered members of the NCWM. 

Appendix B will serve as a summary of the USNWG responses/positions on comments about the code that were 

received from the NCWM and the Northeastern and Southern Weights and Measures Associations. The USNWG 

may also wish to discuss any code proposals that it deems not appropriate for any modification from this point 

onward since the NCWM process allows for nonsubstantive changes to the code language to be proposed from the 

floor of the NCWM or made after deliberations of the S&T Committee. 

(6) Next Meeting

The USNWG has no additional tele/web conference or in-person meetings scheduled for 2010, but should finalize 

any input to the NCWM by July 2, 1010. The Technical Advisors will report to the USNWG on the outcome of 

the both July 2010 NCWM S&T and L&R voting sessions.

4:30 P.M. (ET) Meeting Adjourns