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Participation in international standards activities of interest to members of the American National Standards Institute (ANSI) requires membership in two international nontreaty standardization organizations, namely the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). ANSI's membership in these organizations provides U.S. interests with the opportunity to participate in the work of the ISO and IEC toward the development on international standards. ANSI provides administrative support for overall U.S. ISO and IEC membership together with management leadership.

As the U.S. member body of ISO, ANSI is responsible for participation in those technical areas of work where U.S. interests have indicated support. Each participation is implemented by the selection/establishment of U.S. technical advisory groups (TAGs) for ISO technical committees or subcommittees.

ANSI normally looks to the body which develops national standards in a particular standards area, such as API, to determine the U.S. position in a similar international standardization activity. Such bodies are designated by ANSI as TAGs for specific ISO activities. API has been accredited by ANSI as TAG Administrator to develop U.S. positions for activities in ISO/TC 28 and its subcommittees.

The U.S. TAG to ISO/TC 28 coordinates input and provides delegations to the ISO/TC 28 Measurement Subcommittees:

SC 2, Dynamic Petroleum Measurement

SC 3, Static Petroleum Measurement

SC 5, Light Hydrocarbon Fluids

SC 6, Bulk Cargo Transfer, Accountability & Reconciliation

The goal of this page is to provide access to up-to-date information on open ballots and resource information. There is also a link to the ISO/TC 28 homepage for those members who would like specific information on work programme, and activities for ISO/TC 28 committee, subcommittee, and workgroup members.

U.S. TAG to ISO/TC 28, SC 1 & SC 4 Chairman: Hap Thompson
TAG Administrator: Paula Watkins, API

U.S. TAG to ISO/TC 28, SC 2, SC 3,SC 5, SC 6 Chairman: Edwin Carlson
TAG Administrator: Paula Watkins, API