ISO 7278-2:2022
2022-11
ISO 7278-2:2022
Abstract
This document provides descriptions of the different types of pipe provers, otherwise known as displacement provers, currently in use. These include sphere (ball) provers and piston provers operating in unidirectional and bidirectional forms. It applies to provers operated in conventional, reduced volume, and small volume modes.
This document gives guidelines for:
— the design of pipe provers of each type;
— the calibration methods;
— the installation and use of pipe provers of each type;
— the interaction between pipe provers and different types of flowmeters;
— the calculations used to derive the volumes of liquid measured (see Annex A);
— the expected acceptance criteria for fiscal and custody transfer applications, given as guidance for both the calibration of pipe provers and when proving flowmeters (see Annex C).
This document is applicable to the use of pipe provers for crude oils and light hydrocarbon products which are liquid at ambient conditions. The principles apply across applications for a wider range of liquids, including water. The principles also apply for low vapour pressure, chilled and cryogenic products, however use with these products can require additional guidance.
General information
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Status: PublishedPublication date: 2022-11Stage: International Standard published [60.60]
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Edition: 2Number of pages: 109
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Technical Committee :ISO/TC 28/SC 2ICS :75.180.30
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Amendments
Amendments are issued when it is found that new material may need to be added to an existing standardization document. They may also include editorial or technical corrections to be applied to the existing document.
Amendment 1
Edition 2026
Life cycle
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Previously
WithdrawnISO 7278-2:1988
WithdrawnISO 7278-4:1999
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Now
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Preliminary
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10
Proposal
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20
Preparatory
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30
Committee
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40
Enquiry
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50
Approval
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60
Publication
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90
Review
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95
Withdrawal
Amendments
Provide additional content; available for purchase; not included in the text of the existing standard.PublishedISO 7278-2:2022/Amd 1:2026
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00