What is ISO 8222 – Calibration of volumetric petroleum measurement systems about?
ISO 8222 is an International Standard that discusses petroleum volumetric measurement systems. Volumetric, or capacity, measures are used to provide an accurate measure of volume, thereby providing a calibration reference for other volume-measuring devices, such as pipe displacement provers or flowmeters.
ISO 8222 describes the design, use, and calibration of volumetric measures (capacity measures) which are intended for use in fixed locations in a laboratory or in the field.
ISO 8222 is applicable to the petroleum industry; however, it may be applied more widely to other applications.
ISO 8222 also provides reference formulae describing the properties of water and other fluids and materials used in volumetric measurement more generally.
Note: ISO 8222 excludes measures for cryogenic liquids and pressurized measures as used for liquid petroleum gas (LPG) and liquefied natural gas (LNG).
Who is ISO 8222 – Calibration of volumetric petroleum measurement systems for?
ISO 8222 on the calibration of volumetric petroleum measurement systems is useful for:
- The petroleum industry
- Testing laboratories
- Quality control / inspection personnel
- Other entities and authorities associated with the petroleum industry
Why should you use ISO 8222 – Calibration of volumetric petroleum measurement systems?
Volume measures are categorized in terms of capacity, test measures being below 20 l. Measures above 20 l are categorized as prover tanks. Standard measures are designed to comply with regulatory guidance and hence have specified volumes. Other measures have non-standard volumes specifically designed to suit an application, for example, measures to accompany a small volume prover.
Volumetric measures are used to calibrate flowmeters, both duty, and reference meters. They also are used to calibrate secondary volume measures, displacement (pipe) provers, and storage tanks.
ISO 8222 gives guidance on both standard and non-standard measures. ISO 8222 also covers portable and mobile measures.
Volumetric measures are classified as test measures or prover tanks depending on capacity and design.
Measures described in ISO 8222 are primarily designed, calibrated, and used to measure volumes from a measure that is wetted and drained for a specified time before use and designated to deliver. Many of the provisions, however, apply equally to measures that are used to measure a volume using a clean and dry measure and designated to contain.
Guidance is given regarding commonly expected uncertainties and calibration specifications. Adopting these petroleum measurement techniques of ISO 8222, you will comply with measurement standards so that there is standardization for measurement across the industry.
What’s changed since the last update?
BS EN ISO 8222:2020+A1:2022 supersedes BS EN ISO 8222:2020, which is withdrawn. BS EN ISO 8222:2020+A1:2022 includes some technical changes with respect to BS EN ISO 8222:2020. These include:
- Revision of the title and scope to allow the document to cover the design, calibration, and use of a wide range of volumetric measures comprising proving tanks, test measures, field, and standard measures
- Provision of revised, updated, and extended formulae to allow calculation of temperature correction including the addition of formulae for saline water, other liquids, and material properties
