SIST EN ISO 7278-2:2023/kFprA1:2026
(Amendment)Petroleum measurement systems - Part 2: Pipe prover design, calibration and operation - Amendment 1 (ISO 7278-2:2022/FDAM 1:2026)
Petroleum measurement systems - Part 2: Pipe prover design, calibration and operation - Amendment 1 (ISO 7278-2:2022/FDAM 1:2026)
Mineralölmesssysteme - Teil 2: Auslegung, Kalibrierung und Betrieb von Rohrprüfgeräten - Änderung 1 (ISO 7278 2:2022/FDAM 1:2026)
Systèmes de mesurage des produits pétroliers - Partie 2: Conception, étalonnage et fonctionnement des tubes étalons - Amendement 1 (ISO 7278-2:2022/FDAM 1:2026)
Merilni sistemi za nafto - 2. del: Načrtovanje, kalibracija in delovanje merilnika cevi - Dopolnilo 1 (ISO 7278-2:2022/FDAM 1:2026)
General Information
- Status
- Not Published
- Public Enquiry End Date
- 23-Dec-2025
- Technical Committee
- NAD - Petroleum products, lubricants and related products
- Current Stage
- 5020 - Formal vote (FV) (Adopted Project)
- Start Date
- 18-Mar-2026
- Due Date
- 06-May-2026
- Completion Date
- 14-Apr-2026
Relations
- Effective Date
- 01-Dec-2025
Overview
SIST EN ISO 7278-2:2023/kFprA1:2026 is an amendment to the international standard focusing on petroleum measurement systems, particularly the design, calibration, and operation of pipe provers. As part of the harmonized efforts by CEN and ISO, this amendment enhances the guidelines for the inspection, sizing, and calibration of sphere displacers used in pipe provers. These systems are essential for accurate volumetric measurement in the oil and gas industry, ensuring that metering and flow measurement comply with rigorous standards for safety, accuracy, and regulatory compliance.
Key Topics
- Pipe Prover Design: Guidance on the construction and configuration of pipe provers, emphasizing measurement accuracy and robust design suitable for various petroleum products.
- Calibration Procedures: Updated procedures for checking system leakage and ensuring all measurement equipment such as four-way valves and piston provers are sealed correctly before calibration begins.
- Sphere Inspection and Sizing: Detailed inspection and sizing practices for both new and in-service spheres, including:
- Inspection for surface defects, excessive wear, degradation, and correct inflation diameter
- Sizing methodologies using micrometres, slip rings, or diameter/circumference tapes
- Compliance with resolution and calibration requirements to ensure measurement uncertainty is minimized
- Specific guidance on determining acceptable sphere ovality and dealing with large sphere distortion
- Operational Condition: The importance of maintaining the pipe prover in good working order during calibration, with all temporary modifications to be documented in the calibration report.
Applications
Petroleum measurement systems with pipe provers play a crucial role in many segments of the oil and gas sector, including:
- Custody Transfer: Ensuring precise metering during the transfer of large petroleum product volumes between parties, complying with regulatory and contractual requirements.
- Process Measurement: Continuous flow measurement for process control and optimization, including leak detection and batch tracking.
- Calibration of Flow Meters: Serving as reference standards for calibrating turbine and positive displacement meters used in the industry.
- Quality Control and Regulatory Compliance: Demonstrating conformance to mandatory industry standards, enhancing traceability, and reducing the risk of measurement disputes.
Related Standards
Users working with SIST EN ISO 7278-2:2023/kFprA1:2026 may find it beneficial to consider the following related standards:
- ISO 7278-1: Covers the terminology and general principles for petroleum measurement systems.
- API MPMS Chapter 4 Section 9: Provides additional guidance on sphere provers and their operational parameters, referenced directly in the amendment for measurement tolerances.
- ISO 17025: Details general requirements for laboratory competence in calibration and testing, supporting the need for traceable, reliable calibration processes.
- ISO 3171 and ISO 4267: Cover sampling and flow measurement for petroleum liquids.
Practical Value
The amendment enhances both the precision and reliability of flow measurement in petroleum operations by:
- Establishing clear, practical instructions for the inspection, sizing, and calibration of pipe prover spheres, thereby minimizing errors.
- Recommending robust documentation practices during calibration, increasing transparency and traceability.
- Improving maintenance standards for measurement equipment, thereby extending operational life and reducing downtime.
By adopting the improved practices of SIST EN ISO 7278-2:2023/kFprA1:2026, organizations can assure compliance with international petroleum measurement requirements, reduce operational risk, and improve confidence in custody transfer and metering accuracy. This standard is essential for industry professionals responsible for calibrating and operating flow measurement systems in refineries, pipelines, and storage facilities.
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Frequently Asked Questions
SIST EN ISO 7278-2:2023/kFprA1:2026 is a draft published by the Slovenian Institute for Standardization (SIST). Its full title is "Petroleum measurement systems - Part 2: Pipe prover design, calibration and operation - Amendment 1 (ISO 7278-2:2022/FDAM 1:2026)". This standard covers: Petroleum measurement systems - Part 2: Pipe prover design, calibration and operation - Amendment 1 (ISO 7278-2:2022/FDAM 1:2026)
Petroleum measurement systems - Part 2: Pipe prover design, calibration and operation - Amendment 1 (ISO 7278-2:2022/FDAM 1:2026)
SIST EN ISO 7278-2:2023/kFprA1:2026 is classified under the following ICS (International Classification for Standards) categories: 75.180.30 - Volumetric equipment and measurements. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN ISO 7278-2:2023/kFprA1:2026 has the following relationships with other standards: It is inter standard links to SIST EN ISO 7278-2:2023. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN ISO 7278-2:2023/kFprA1:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 7278-2:2023/oprA1:2025
01-december-2025
Merilni sistemi za nafto - 2. del: Načrtovanje, kalibracija in delovanje merilnika cevi
- Dopolnilo 1 (ISO 7278-2:2022/DAmd1:2025)
Petroleum measurement systems - Part 2: Pipe prover design, calibration and operation
- Amendment 1 (ISO 7278-2:2022/DAmd1:2025)
Mineralölmesssysteme - Teil 2: Auslegung, Kalibrierung und Betrieb von
Rohrprüfgeräten - Änderung 1 (ISO 7278 2:2022/DAmd 1:2025)
Systèmes de mesurage des produits pétroliers - Partie 2: Conception, étalonnage et
fonctionnement des tubes étalons - Amendement 1 (ISO 7278-2:2022/DAmd 1:2025)
Ta slovenski standard je istoveten z: EN ISO 7278-2:2022/prA1:2025
ICS:
75.180.30 Oprema za merjenje Volumetric equipment and
prostornine in merjenje measurements
SIST EN ISO 7278-2:2023/oprA1:2025 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
SIST EN ISO 7278-2:2023/oprA1:2025
SIST EN ISO 7278-2:2023/oprA1:2025
DRAFT
Amendment
ISO 7278-2:2022/
DAM 1
ISO/TC 28/SC 2
Petroleum measurement systems —
Secretariat: BSI
Part 2:
Voting begins on:
Pipe prover design, calibration and
2025-10-01
operation
Voting terminates on:
2025-12-24
AMENDMENT 1
Systèmes de mesurage des produits pétroliers —
Partie 2: Conception, étalonnage et fonctionnement des tubes
étalons
AMENDEMENT 1
ICS: 75.180.30
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document has not been edited by the ISO Central Secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO 7278-2:2022/DAM 1:2025(en)
SIST EN ISO 7278-2:2023/oprA1:2025
DRAFT
ISO 7278-2:2022/DAM 1:2025(en)
Amendment
ISO 7278-2:2022/
DAM 1
ISO/TC 28/SC 2
Petroleum measurement systems —
Secretariat: BSI
Part 2:
Voting begins on:
Pipe prover design, calibration and
operation
Voting terminates on:
AMENDMENT 1
Systèmes de mesurage des produits pétroliers —
Partie 2: Conception, étalonnage et fonctionnement des tubes étalons
AMENDEMENT 1
ICS: 75.180.30
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document has not been edited by the ISO Central Secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2025
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
ISO copyright office
RECIPIENTS OF THIS DRAFT ARE INVITED
CP 401 • Ch. de Blandonnet 8
TO SUBMIT, WITH THEIR COMMENTS,
CH-1214 Vernier, Geneva
NOTIFICATION OF ANY RELEVANT PATENT
Phone: +41 22 749 01 11
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland Reference number
ISO 7278-2:2022/DAM 1:2025(en)
ii
SIST EN ISO 7278-2:2023/oprA1:2025
ISO 7278-2:2022/DAM 1:2025(en)
Petroleum measurement systems —
Part 2:
Pipe prover design, calibration and operation
AMENDMENT 1
1) Clause 11.2: add a paragraph to the end of clause 11.2.
Prior to commencing the calibration, the system should be checked for leakage. If appropriate the operation
and leak checking of a four-way valve, or a seal leakage test of a piston prover, should be carried out. A
sphere displacer should be withdrawn safely for inspection (clause 13.3). When removed, a sphere can
be positioned on a clean dry and dirt-free surface in a location suitable for measurement to the required
accuracy. It can then be inspected for condition and inflation diameter measured (clause 6.5.4).
2) Clause 6.5.2: -Delete paras 8 to 11
3) Insert new clause 6.5.4
6.5.4 Sphere inspection and sizing
New and spheres which have been removed from a prover should be inspected in the same way. Removal of
a sphere and initial inspection should follow the guidance given in clause 13.3.
When ordering a new or
...
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