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NMI going with the flow!

With Australia poised to become the largest exporter of gas in the world by 2020, energy is a key contributor to Australia’s economic prosperity.  Accurate measurement provides a trusted basis for the custody transfer of gas and liquid hydrocarbons.  It is an essential tool for lowering maintenance and down-time costs.

NMI has recently enhanced its support for Australia’s oil and gas industry in the following ways:.

  1. NMI has sought and gained NATA accreditation and international recognition for all its flow services, including several new capabilities.  This means that NMI can provide a measurement service with fast turnaround times to help the oil and gas industry manage maintenance schedules thereby improving overall productivity and efficiency.

  2. Owing to Australia’s plentiful supplies of gas, compressed natural gas (CNG) is an attractive, low-cost transport fuel now commonly used in buses in many cities.  The very-high line pressures of up to 30 MPa and the transient flow conditions that occur can significantly affect the calibration of the mass-flow coriolis-meters commonly used.

    NMI has recently established a new capability to calibrate these meters with an accuracy of 0.09% at our Londonderry facility.  It was interesting to observe some basic thermodynamic effects in action during the calibration, with pipes and valves icing up due to line pressure drops, and the gravimetric collection vessels heating as they filled.  Both effects need to be taken into consideration when estimating the uncertainty of measurement associated with the calibration.
     
  3. The rapidly developing coal seam gas (CSG) industry also faces new challenges in well-head metering of their highly distributed gas-field collection network.  Using NMI’s existing compressed-air supply and atmospheric-pressure sonic-nozzle reference system, together with some clever flow-engineering, we are now able to calibrate gas meters, including ultrasonic meters, at up to 0.5 MPa at 450 kg/hr, with an accuracy of 0.15%.

  4. Ensuring accurate, fit-for-purpose measurements is more than just making sure your equipment is calibrated.  Even relatively simple calibrations require an awareness of the underlying principles when establishing methods.  For example, a simple gravimetric flow calibration needs careful consideration of the buoyancy, thermal expansion and vapour pressure of the fuel throughout the flow loop. 

In December 2015, NMI conducted its first Liquid-Hydrocarbon-Flow-Metering course at the Londonderry site in Sydney.  The new course, covering equipment, calibration methods and uncertainty calculation, included real-world, hands-on applications of the measurements.  NMI is now considering establishing a similar course in the gas-flow area.

Upcoming NMI Training Courses

The following NMI courses are offered during February – April 2016.

Chemical Metrology Training

City

Date

Price

Analytical Method Validation

Sydney

28–29 March 2016

$1,974.50

Estimating Measurement Uncertainty for Biologists

Sydney

7 April 2016

$1,083.50

Estimating Measurement Uncertainty for Chemists

Sydney

30–31 March 2016

$1,974.50

Statistics for Metrology

Sydney

3 March 2016

$1,083.50

Physical Metrology Training

City

Date

Price

Dimensional Measurement

Melbourne

20–21 April 2016

$1,795.00

Humidity Measurement

Sydney

3 March 2016

$985.00

Introduction to Estimating Measurement Uncertainty

Sydney

24 February 2016

$985.00

Melbourne

17 March 2016

Adelaide

14 April 2016

Time and Frequency Measurement

Sydney

9–10 March 2016

$1,974.50


For further information please visit the training page on our website.
Alternatively, please call us on +61 2 8467 3796 or email us at This email address is being protected from spambots. You need JavaScript enabled to view it. .