RP3.2-07: Metering and gas quality monitoring of future fuel blends

Executive Summary

This project identified the limits of current knowledge of measurement technology and pipeline monitoring systems with respect to the introduction of future fuels into the natural gas pipeline transmission network.

Properties of the blended gas are different and existing measurement of flow rate and composition may not be adequate to ensure gas is within specification to ensure that the billing is correct. Accurate measurement is required to maintain consumer confidence in gas supply, and to comply with the requirements under the National Gas Law. This research helped to:

  1. Define the measurement uncertainty levels of commonly used measurement instrumentation when deployed on future fuel gas blends;
  2. Assess the performance of flow computing and other gas measurement software systems when future fuel blends are introduced;
  3. Assess the current knowledge level and any potential gaps with regard to high-pressure calibration of custody transfer flow meters using hydrogen as the process fluid;
  4. Complete an ISO 5168 overall uncertainty analysis that compares a natural gas installation to that of a hydrogen blend; and
  5. Identify, review and provide advice on potential revisions or additions to existing Standards and Regulations applicable to Australian gas transmission metering facilities.

The outcomes of this project have now been made publicly available – please see the links below to the Summary Report and Final Report:

View Summary Report

View Final Report

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Commencement / End Date March 2020 to March 2021
Outcomes / Impact

This project provides the gas and transmission pipelines industry with an improved understanding of the flow-rate of gas, correct pricing, and confidence in product delivery if hydrogen is blended into the natural gas. This information helps industry to assess whether existing metering facilities in Australia’s transmission networks are capable of effectively managing future fuel applications, and indicate whether any modifications and/or additions are necessary.

The developed knowledge has informed the Austarlian standards for developping a handbook of “Blending Hydrogen into Natural Gas Pipelines and Distribution Systems”.

Partners University of Adelaide, University of Wollongong, Enscope, APA, Epic, AGIG, Jemena
Research Contact

Douglas Proud

Research & Utilisation Program Coordinator