ISO 5872:2025
(Main)Oil and gas industries including lower carbon energy — Pipeline transportation systems — Vocabulary
Oil and gas industries including lower carbon energy — Pipeline transportation systems — Vocabulary
This document establishes basic terms and definitions for the design, materials, construction, testing, operation, maintenance and abandonment of pipeline transportation systems in oil and gas industries. This document is applicable to the design, construction, operation and maintenance of pipeline systems for transportation of oil and gas. This document is not applicable to the process piping in the factory area of oil refining and chemical enterprises.
Titre manque
Le présent document établit les termes et définitions fondamentaux relatifs à la conception, au choix des matériaux, à la construction, aux essais, à l'exploitation, à la maintenance et à l'abandon des systèmes de transport par conduites dans l'industrie du pétrole et du gaz naturel. Le présent document s'applique à la conception, à la construction, à l'exploitation et à la maintenance des systèmes de conduites pour le transport de pétrole et de gaz naturel. Le présent document ne s'applique pas aux canalisations de processus dans la zone industrielle des entreprises de raffinage du pétrole et des entreprises chimiques.
General Information
Buy Standard
Standards Content (Sample)
International
Standard
ISO 5872
First edition
Oil and gas industries including
2025-08
lower carbon energy — Pipeline
transportation systems —
Vocabulary
Reference number
© ISO 2025
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms related to general concepts . 1
4 Terms related to materials and equipment . 3
4.1 Pipe materials.3
4.2 Equipment .5
5 Terms related to design, construction and testing . 9
5.1 Design of pipeline system .9
5.2 Pipeline installation . 12
5.3 Welding and Non-destructive testing .14
5.4 Pre-commissioning and commissioning .17
6 Terms related to operation and maintenance .18
6.1 Operation of pipeline and station .18
6.2 Pipeline maintenance . 20
6.3 Repair and emergency response .24
6.4 Life extension and abandonment . 25
7 Terms related to corrosion control.26
7.1 General . 26
7.2 Coating .27
7.3 Cathodic protection . 29
7.4 Stray current .32
Bibliography .34
iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 67, Oil and gas industries including lower carbon
energy, Subcommittee SC 2, Pipeline transportation systems.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
Introduction
This document provides the basis for common understanding for all future ISO standards for pipeline
transportation systems and a comprehensive list of terms and their definitions for pipeline transportation
systems in order to facilitate communication among:
— experts involved in the development of ISO standards for pipeline transportation systems;
— professionals involved in design, construction, operation, maintenance and abandonment of pipeline
transportation systems.
v
International Standard ISO 5872:2025(en)
Oil and gas industries including lower carbon energy —
Pipeline transportation systems — Vocabulary
1 Scope
This document establishes basic terms and definitions for the design, materials, construction, testing,
operation, maintenance and abandonment of pipeline transportation systems in oil and gas industries.
This document is applicable to the design, construction, operation and maintenance of pipeline systems for
transportation of oil and gas.
This document is not applicable to the process piping in the factory area of oil refining and chemical
enterprises.
2 Normative references
There are no normative references in this document.
3 Terms related to general concepts
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
acceptance criteria
specified indicators or measures employed in assessing the ability of a component (3.2), structure, or system
to perform its intended function
3.2
component
pipeline component
mechanical element suitable for joining together or assembly into pressure-tight fluid-containing pipeline
systems (3.10)
EXAMPLE Tubing, fittings (4.1.10), flanges, gaskets, bolting, valves (4.2.21) and devices such as expansion joints,
flexible joints, pressure hoses, traps, strainers, in-line portions of instruments, and separators.
3.3
fluid
gaseous or liquid medium being transported through the pipeline system (3.10)
3.4
in-service pipeline
pipeline (3.9) that has been commissioned and in operation for the transportation of fluid (3.3)
3.5
life cycle
set of stages in the development of the pipeline system (3.10) including its design, construction, commissioning
(5.4.1), operation, maintenance (6.2.17), preservation (6.4.5) and abandonment (6.4.2)
3.6
mitigation
limitation of any negative consequence of a particular event
3.7
offshore pipeline
pipeline (3.9) laid in maritime waters and estuaries seaward of the ordinary high water mark
3.8
onshore pipeline
on-land pipeline
pipeline (3.9) laid on or in the ground, including pipelines laid under inland waterways
3.9
pipeline
those components (3.2) of a pipeline system (3.10) connected together to convey fluids (3.3) between stations
(3.12) and/or plants, including pipe, pig traps (5.1.18), components, appurtenances, spools, risers, isolation
valves (4.2.3), and sectionalizing valves
3.10
pipeline system
pipeline transportation system
pipelines (3.9), stations (3.12), supervisory control and data acquisition (SCADA) (6.1.15) system, safety
systems, corrosion (7.1.1) protection systems, and any other equipment, facility or building used in the
transportation of fluids (3.3)
3.11
pipeline network
system of interconnected pipelines (3.9), both national and international, that serve to transport or distribute
fluids (3.3)
[SOURCE: ISO 20675:2018, 3.46, modified — "transmit and distribute natural gas" has been replaced by
"transport or distribute fluids".]
3.12
station
facility for the purpose of increasing pressure, decreasing pressure, storage, distributing, metering, heating,
cooling or isolating the transported fluid (3.3)
EXAMPLE Compressor (4.2.4) station, measuring station, pump station, pressure-regulating station, pressure-
limiting station, pressure relief station.
3.13
terminal
facility designed for the receipt, storage, transshipment and distribution of oil and natural gas
3.14
threat
activity or condition that can adversely affect the pipeline system (3.10) if not adequately controlled
4 Terms related to materials and equipment
4.1 Pipe materials
4.1.1
imperfection
discontinuity
flaw
anomaly
possible deviation from pipe material or weld soundness
Note 1 to entry: Signs of deviation from the norm can be detected by non-destructive inspection (5.3.13), such as in-line
inspection (6.2.5).
4.1.2
arc burn
localized point of surface melting caused by arcing between an electrode or ground (earth) and the
material surface
Note 1 to entry: Contact marks, which are intermittent marks adjacent to the weld line of EW pipe resulting from
electrical contact between the electrodes supplying the welding current and the pipe surface, or contact marks
resulting from the use of a spectrometer for the detection of steel chemical composition, are not arc burns.
[SOURCE: ISO 11960:2020, 3.1.3, modified — "product" has been replaced by "material".]
4.1.3
bend
fitting (4.1.10) that provides for a change of direction within a pipeline (3.9)
4.1.4
bend angle
amount of directional change through the bend (4.1.3)
4.1.5
qualification test
process of inspection and evaluation of product or component (3.2) compliance test performed on a product
or component to verify the requirements of the manufacturing procedure specification (4.1.20) and to
demonstrate that products or components meeting the specified requirements can be produced
4.1.6
cold bending
controlled bending process using presses at ambient temperature
4.1.7
deformation
change in shape of a pipe or component (3.2), such as a bend (4.1.3), buckle, dent (4.1.8), ovality (4.1.26),
ripple, wrinkle, or any other change that affects the profile or original cross-section or straightness of a pipe
or component
4.1.8
dent
depression which produces a disturbance in the curvature of the pipe wa
...
FINAL DRAFT
International
Standard
ISO/FDIS 5872
ISO/TC 67/SC 2
Oil and gas industries including
Secretariat: UNI
lower carbon energy — Pipeline
Voting begins on:
transportation systems —
2025-05-30
Vocabulary
Voting terminates on:
2025-07-25
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 SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
ISO/FDIS 5872:2025(en) © ISO 2025
FINAL DRAFT
ISO/FDIS 5872:2025(en)
International
Standard
ISO/FDIS 5872
ISO/TC 67/SC 2
Oil and gas industries including
Secretariat: UNI
lower carbon energy — Pipeline
Voting begins on:
transportation systems —
Vocabulary
Voting terminates on:
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 SUPPOR TING DOCUMENTATION.
© ISO 2025
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland Reference number
ISO/FDIS 5872:2025(en) © ISO 2025
ii
ISO/FDIS 5872:2025(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms related to general concepts . 1
4 Terms related to materials and equipment . 3
4.1 Pipe materials.3
4.2 Equipment .5
5 Terms related to design, construction and testing . 9
5.1 Design of pipeline system .9
5.2 Pipeline installation . 12
5.3 Welding and Non-destructive testing .14
5.4 Pre-commissioning and commissioning .17
6 Terms related to operation and maintenance .18
6.1 Operation of pipeline and station .18
6.2 Pipeline maintenance . 20
6.3 Repair and emergency response .24
6.4 Life extension and abandonment . 25
7 Terms related to corrosion control.26
7.1 General . 26
7.2 Coating .27
7.3 Cathodic protection . 29
7.4 Stray current .32
Bibliography .34
iii
ISO/FDIS 5872:2025(en)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 67, Oil and gas industries including lower carbon
energy, Subcommittee SC 2, Pipeline transportation systems.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
ISO/FDIS 5872:2025(en)
Introduction
This document provides the basis for common understanding for all future ISO standards for pipeline
transportation systems and a comprehensive list of terms and their definitions for pipeline transportation
systems in order to facilitate communication among:
— experts involved in the development of ISO standards for pipeline transportation systems;
— professionals involved in design, construction, operation, maintenance and abandonment of pipeline
transportation systems.
v
FINAL DRAFT International Standard ISO/FDIS 5872:2025(en)
Oil and gas industries including lower carbon energy —
Pipeline transportation systems — Vocabulary
1 Scope
This document establishes basic terms and definitions for the design, materials, construction, testing,
operation, maintenance and abandonment of pipeline transportation systems in oil and gas industries.
This document is applicable to the design, construction, operation and maintenance of pipeline systems for
transportation of oil and gas.
This document is not applicable to the process piping in the factory area of oil refining and chemical
enterprises.
2 Normative references
There are no normative references in this document.
3 Terms related to general concepts
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
acceptance criteria
specified indicators or measures employed in assessing the ability of a component (3.2), structure, or system
to perform its intended function
3.2
component
pipeline component
mechanical element suitable for joining together or assembly into pressure-tight fluid-containing pipeline
systems (3.10)
EXAMPLE Tubing, fittings (4.1.10), flanges, gaskets, bolting, valves (4.2.21) and devices such as expansion joints,
flexible joints, pressure hoses, traps, strainers, in-line portions of instruments, and separators.
3.3
fluid
gaseous or liquid medium being transported through the pipeline system (3.10)
3.4
in-service pipeline
pipeline (3.9) that has been commissioned and in operation for the transportation of fluid (3.3)
3.5
life cycle
set of stages in the development of the pipeline system (3.10) including its design, construction, commissioning
(5.4.1), operation, maintenance (6.2.17), preservation (6.4.5) and abandonment (6.4.2)
ISO/FDIS 5872:2025(en)
3.6
mitigation
limitation of any negative consequence of a particular event
3.7
offshore pipeline
pipeline (3.9) laid in maritime waters and estuaries seaward of the ordinary high water mark
3.8
onshore pipeline
on-land pipeline
pipeline (3.9) laid on or in the ground, including pipelines laid under inland waterways
3.9
pipeline
those components (3.2) of a pipeline system (3.10) connected together to convey fluids (3.3) between stations
(3.12) and/or plants, including pipe, pig traps (5.1.18), components, appurtenances, spools, risers, isolation
valves (4.2.3), and sectionalizing valves
3.10
pipeline system
pipeline transportation system
pipelines (3.9), stations (3.12), supervisory control and data acquisition (SCADA) (6.1.15) system, safety
systems, corrosion (7.1.1) protection systems, and any other equipment, facility or building used in the
transportation of fluids (3.3)
3.11
pipeline network
system of interconnected pipelines (3.9), both national and international, that serve to transport or distribute
fluids (3.3)
[SOURCE: ISO 20675:2018, 3.46, modified — "transmit and distribute natural gas" has been replaced by
"transport or distribute fluids".]
3.12
station
facility for the purpose of increasing pressure, decreasing pressure, storage, distributing, metering, heating,
cooling or isolating the transported fluid (3.3)
EXAMPLE Compressor (4.2.4) station, measuring station, pump station, pressure-regulating station, pressure-
limiting station, pressure relief station.
3.13
terminal
facility designed for the receipt, storage, transshipment and distribution of oil and natural gas
3.14
threat
activity or condition that can adversely affect the pipeline system (3.10) if not adequately controlled
ISO/FDIS 5872:2025(en)
4 Terms related to materials and equipment
4.1 Pipe materials
4.1.1
imperfection
discontinuity
flaw
anomaly
possible deviation from pipe material or weld soundness
Note 1 to entry: Signs of deviation from the norm can be detected by non-destructive inspection (5.3.13), such as in-line
inspection (6.2.5).
4.1.2
arc burn
localized point of surface melting caused by arcing between an ele
...
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