5 arguments for re-calibration of gas meters
Can your gas meter measure correctly without periodical re-calibration? Can a calibration laboratory? Re-calibration of gas meters continues to be a discussion point in the natural gas industry.
We have asked 5 industry professionals to share their opinion on the necessity of re-calibration. Here are their best arguments for re-calibration gas meters.
1. Re-calibration to avoid financial surprises
Re-calibration is preventive metrological maintenance. You do it because you want to avoid costly accidents.
Dr. Jos van der Grinten, Physikalisch-Technische Bundesanstalt
2. Re-calibration ensures compliance with regulations
The primarily argument for re-calibration on Siri is compliance to government regulations, and terms and conditions in Tie Inn agreement with partners involved in the Siri field. Second, but not least, it is always an evaluation of what risk you as company are willing to take on a specific measurement. The risk can be attributed to the different topics. For example, safety, environment, cost or operational up time.
Preben Hjuler, Senior Metering Engineer, INEOS
3. Re-calibration confirms accuracy and reduces uncertainty
The recalibration is to confirm that the meters are behaving well. We do this every 5th year. We are using these meters for both sales gas and allocating fuelgas. Some of them are used for reporting to the Norwegian Environment Agency concerning the emission of CO2. By calibrating on gas, we also reduce the uncertainty for the meters. When operating Coriolis meters on gas we are working on the lower operational area of the meters.
Ole-John Melkevik, Specialist Operation & Maintenance, Equinor
4. Re-calibration, diagnostics and big data analytics is the future
Metering should be based on fair trade between parties, where no party benefits financially from measurement errors at the expense of the other party. Re-calibration traditionally is the only way to know for sure if your meter has a systematic bias. For the future of metering, we foresee new methodologies, based on the combination of active diagnostics for meters and a big data analytics approach, which will complement the traditional periodically scheduled re-calibrations.
Lennart van Luijk, MSc. Senior Specialist Flow Metering | Data Scientist, DNV GL - Oil & Gas
5. Re-calibration reduces risks
Re-calibration is necessary to reduce technical and financial risks. Technical - to check the general condition of the meter, of the transducers, etc. Financial – to ensure correct transfer of gas in the supply chain and avoid uncertainty. From a laboratory point of view, it is also interesting to look at the re-calibration intervals and how to apply historical calibration data of the meter to identify the most accurate calibration intervals.
Jesper Busk, Vice President Gas Flow Technology, FORCE Technology
Or learn more about Calibration here.
Our services,Related articles
8 things to remember when shipping gas meters to a calibration facility
E-guide: Understand calibration certificates
Learn how to read, interpret and understand gas calibration certificate with this e-guide.
Reducing operational uncertainty in gas transfers
Importance of managing fiscal risk in large volume gas custody transfer.
Uncertainty explained: Class half meters
Most laboratories in the world don’t have uncertainty levels adequately low to perform accredited calibrations of a class half meter. How does this affect the gas metering industry?
Uncertainty explained: How is a calibration result reached?
In order to understand uncertainty calculations, it is necessary to know how a calibration result is reached.
Uncertainty explained: How to calculate laboratory CMC?
What is CMC, and how does it involve the uncertainty of the laboratories?
Uncertainty explained: Uncertainty budgets
Which factors are important to know and address when working with uncertainty budgets?