On-Demand Webinar:

Oil & Gas Technology

Date: June 4, 2014
Time: 1 PM EDT (10 AM PDT / 7:30 PM CEST)
Duration: 1 hour


Measuring the flow of flare gas and calculating the mass of carbon flared is difficult due to the changing environment inside a flare stack. Conditions vary from the low velocities of normal operation to gas velocities exceeding 100 m/s during blow-down. Attendees of this presentation will examine the challenges of flare gas measurement and explore methods and practices currently used by industry. These include calculation-based methods which require knowledge of the process equipment, to direct measurement methods using a single flare meter or distributed array of sensors. The presentation will also address uncertainty factors as well as common errors encountered during measurement. In the end, participants will gain a better understanding of why flare gas measurement is important, how difficult the measurement challenge is, and best practices for accurate measurement.

Key Takeaways

  • Learn why flare gas measurement is important
  • Understand how difficult measurement conditions are in a flare stack
  • Discover available methods for flare gas measurement
  • Anticipate expected measurement uncertainties


Craig Marshall, Flow Measurment Engineer, NEL

Craig Marshall is a flow measurement engineer with NEL, part of the TÜV SÜD Group. His area of expertise includes ultrasonic flow meters - the primary choice for flare gas measurement. NEL is actively involved in flare gas measurement, producing guidance documents for industrial bodies and governments regarding the testing and calibration of flare gas meters.

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