ISO/FDIS 12747

Oil and gas industries including lower carbon energy — Pipeline transportation systems — Requirements and guidance for pipeline life extension assessment

Titre manque

Le présent document fournit des lignes directrices sur la manière d'évaluer la faisabilité d'une prolongation de la durée de vie d'un réseau de conduites, tel qu'il est défini dans la norme ISO 13623, au-delà de sa durée de vie de conception spécifiée. Les stations de pompage, les postes de compression, les stations de réduction de pression et les dépôts ne sont pas spécifiquement abordés dans le présent document, comme le montre la Figure 1. Le présent document s'applique aux conduites et aux colonnes montantes métalliques rigides (y compris les SCR), tant à terre qu'en mer. Il n'est pas directement applicable dans les cas suivants : — les conduites souples ; — les conduites construites à partir d'autres matériaux, tels que les plastiques renforcés de verre ou les polymères ; — les liaisons ombilicales (service de contrôle et/ou de transport des produits chimiques) ; — l'équipement et la tuyauterie de surface (en dehors des limites du réseau de conduites définies conformément aux exigences réglementaires locales) ; — les structures et composants de protection et de soutien des conduites. NOTE 1 Le processus d'évaluation défini dans le paragraphe 5.3 peut être appliqué dans l'évaluation de la prolongation de la durée de vie de ce qui précède, à la discrétion de l'utilisateur. À titre d'exemple, l'Annexe A donne des lignes directrices sur l'utilisation du processus pour la prolongation de la durée de vie des conduites flexibles non collées. NOTE 2 D'autres lignes directrices sur la prolongation de la durée de vie des systèmes sous-marins, y compris les liaisons ombilicales et les équipements de surface, sont fournies dans la norme NORSOK U-009. NOTE 3 Bien que la prolongation de la durée de vie des structures et des éléments de structure ne soit pas traitée dans la présente norme, le maintien de l'aptitude au service des structures ayant une incidence directe sur l'intégrité structurelle du système de conduites doit être pris en compte pendant toute période d'exploitation prolongée. Ceci doit inclure l'évaluation des conséquences de la dégradation structurelle sur l'intégrité du système de conduites. La norme NORSOK N-006 donne des lignes directrices supplémentaires. Le présent document traite de la prolongation de la durée de vie, qui est une modification du principe de conception initial. Il peut également s'appliquer à d'autres modifications du principe de conception, telles que des réévaluations de la PMAD ou un changement des fluides transportés, à la discrétion de l'utilisateur. Des lignes directrices sur ce dernier point sont fournies à l'Annexe B, étant donné que la prolongation de la durée d'exploitation d'un réseau de conduites peut dépendre uniquement d'un changement des fluides d'exploitation (comme dans le cas de la réutilisation d'une conduite pour le CCUS ou le transport de l'hydrogène).

General Information

• Status: Not Published
• ICS: 75.200 - Petroleum products and natural gas handling equipment
• Technical Committee: ISO/TC 67/SC 2 - Pipeline transportation systems
• Drafting Committee: ISO/TC 67/SC 2 - Pipeline transportation systems
• Current Stage: 5020 - FDIS ballot initiated: 2 months. Proof sent to secretariat
• Start Date: 28-Feb-2025
• Due Date: 28-Feb-2025
• Completion Date: 28-Feb-2025

Relations

• Consolidates: ISO 11665-8:2019 - Measurement of radioactivity in the environment — Air: radon-222 — Part 8: Methodologies for initial and additional investigations in buildings
• Effective Date: 06-Jun-2022
• Revises: ISO/TS 12747:2011 - Petroleum and natural gas industries — Pipeline transportation systems — Recommended practice for pipeline life extension
• Effective Date: 06-Jun-2022

Standards Content (Sample)

FINAL DRAFT
International
Standard
ISO/TC 67/SC 2
Oil and gas industries including
Secretariat: UNI
lower carbon energy — Pipeline
Voting begins on:
transportation systems —
2025-02-28
Requirements and guidance for
Voting terminates on:
pipeline life extension assessment
2025-04-25
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
ISO/CEN PARALLEL PROCESSING 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
FINAL DRAFT
International
Standard
ISO/TC 67/SC 2
Oil and gas industries including
Secretariat: UNI
lower carbon energy — Pipeline
Voting begins on:
transportation systems —
Requirements and guidance for
Voting terminates on:
pipeline life extension assessment
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
ISO/CEN PARALLEL PROCESSING
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: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ii
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 6
5 Life extension overview . 7
5.1 General .7
5.2 Assessment process .7
5.3 Assessment requirements .8
5.4 Limitations on life extension .10
5.5 Pipeline system availability .11
5.5.1 General .11
5.5.2 Pipeline ancillary components .11
5.5.3 Threats .11
6 Data compilation .12
7 Structural integrity of the pipeline system .12
7.1 General . 12
7.2 Structural integrity assessment . 13
7.3 PIMS review . 13
7.4 Remediation requirements.14
8 Future threat identification . 14
9 Life extension assessment . 14
9.1 Risk assessment .14
9.1.1 Process .14
9.1.2 Use of risk assessment in life extension .14
9.1.3 Risk management . 15
9.2 Pipeline system design review . 15
9.2.1 Design standards . 15
9.2.2 Changes to the design basis . .16
9.2.3 Additional data requirements .17
9.3 Assessment of remnant life .17
9.3.1 General .17
9.3.2 Corrosion assessment .18
9.3.3 Fatigue and flaw assessment .19
9.3.4 Remediation.19
9.4 Integrity management during extended life . 20
9.4.1 PIMS . 20
9.4.2 Inspection and monitoring .21
9.4.3 Integrity of risers within caissons and j-tubes .21
9.5 Regulatory requirements. 22
9.6 Update of systems and procedures . 22
9.6.1 General . 22
9.6.2 Emergency response procedures . 22
9.6.3 Operations and safety systems . 22
10 Life extension report .22
Annex A (informative) Considerations for lifetime extension of unbonded flexible pipe .24
Annex B (normative) Change of fluid .26
Annex C (informative) Typical data requirements .28

iii
Annex D (informative) Defect and anomaly assessment guidance .32
Annex E (informative) Common threats to rigid pipelines .33
Annex F (informative) Inspection, testing, monitoring and sampling techniques .34
Bibliography .36

iv
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
...

ISO/DISFDIS 12747:2024(en)
ISO/TC 67/SC 2
Secretariat: UNI
Date: 2024-12-102025-02-14
Oil and gas industries including lower carbon energy — Pipeline
transportation systems — Requirements and guidance for
pipeline life extension assessment
Industries du pétrole et du gaz naturel — Systèmes de transport par conduites — Pratique recommandée
pour une longue durée des conduites

FDIS stage
ISO/DISFDIS 12747:20242025(en)
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'sISO’s member body in the country of the requester.
ISO Copyright Officecopyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
Email: E-mail: [e-mail]
Website: www.iso.org
Published in Switzerland.
ii
ISO/DISFDIS 12747:20242025(en)
Contents Page
Foreword . iv
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 8
5 Life extension overview . 9
5.1 General . 9
5.2 Assessment process . 10
5.3 Assessment requirements . 10
5.4 Limitations on life extension . 14
5.5 Pipeline system availability . 15
6 Data compilation . 16
7 Structural integrity of the pipeline system . 17
7.1 General . 17
7.2 Structural integrity assessment . 17
7.3 PIMS review . 18
7.4 Remediation requirements . 18
8 Future threat identification . 18
9 Life extension assessment . 19
9.1 Risk assessment . 19
9.2 Pipeline system design review . 21
9.3 Assessment of remnant life . 23
9.4 Integrity management during extended life . 26
9.5 Regulatory requirements . 28
9.6 Update of systems and procedures . 28
10 Life extension report . 28
Annex A (informative) Considerations for lifetime extension of unbonded flexible pipe . 30
Annex B (normative) Change of fluid . 33
Annex C (informative) Typical data requirements . 35
Annex D (informative) Defect and anomaly assessment guidance . 39
Annex E (informative) Common threats to rigid pipelines . 41
Annex F (informative) Inspection, testing, monitoring and sampling techniques . 42
Bibliography . 45

iii
ISO/DISFDIS 12747:20242025(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.
This first edition cancels and replaces ISO/TS 12747:2011, which has been technically revised.
The main changes are as follows:
— — Assessmentassessment requirements for lifetime extension considering a change of pipeline fluid,
beyond that which can occur naturally as fluid sources or compositions change, have been incorporated;
— — Additionaladditional references to codes and standards detailing assessment approaches suitable for
the assessment of threats identified as part of a lifetime extension assessment have been added, and the
existing references updated as appropriate;
— — Guidanceguidance on the following has been provided:
— — assessment approaches for common pipeline features that may limit remnant life;
— — additional considerations for maintaining the integrity of risers within caissons and j-tubes;
— — appropriate inspection, testing, monitoring and sampling techniques that can be used to
mitigate risks during any period of extended operation;
— — factors affecting the future operability of the system that should be addressed as part of
lifetime extension in addition to the structural integrity of the pipeline system;
— — lifetime extension considerations for unbonded flexible pipe.
iv
ISO/DISFDIS 12747:20242025(en)
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.
v
ISO/DISFDIS 12747:20242025(en)
Introduction
The purpose of this document is to detail a suitable approach to pipeline life extension assessment that can be
applied by operators (or parties acting on their behalf) across the industry. It is concerned with the proof of
structural integrity of the pipeline system for the justification of extended operation. Integrity management is
not covered in detail. However, the interface between a pipeline integrity management system (PIMS) and the
life extension process is considered because:
— — a PIMS, where present, forms an integral part of the integrity assessment of the pipeline system;
— — a PIMS of some form is required for operation in extended life.
Factors affecting the future operability of the system but not the structural integrity, such as deterioration of
topsides equipment or the loss of a control umbilical, are flagged as requiring assessment but are not
addressed in full in this document.
NOTE Further guidance on the lifetime extension of subsea systems, including umbilicals and topsides equipment,
is provided in NORSOK U-009.
Whilst this document is aimed primarily at the pipeline operators, it can also be of interest to other
stakeholders such as:
— — regulators approving the life extension application;
— — members of the public affected by the life extension application, such as other users of maritime
waters, landowners and developers.
Considering this, an overview of the life extension process and the key principles involved is given in
Clause 5Clause 5. The remainder of the document is intended to detail requirements of the process and to
provide guidance to those performing the life extension assessments. All guidance presented is intended for
use in conjunction with sound engineering practice and judgment.
This document is not intended for use as a design standard.
vi
DRAFT International Standard ISO/DIS 12747:2024(en)

Oil and gas industries including lower carbon energy — Pipeline
transportation systems — Requirements and guidance for pipeline
life extension assessment
1 Scope
This document presents assessment requirements and associated guidance for extending the service life of a
pipeline system, as defined in ISO 13623, beyond its specified design life. It applies to both onshore and
offshore rigid metallic pipelines and risers ([including steel catenary risers (SCRs). )].
This document is not directly applicable to the following:
— — flexible pipelines;
— — pipelines constructed from other materials, such as glass reinforced plastics or polymers;
— — umbilicals (control or chemical conveyance service, or both);
— — topsides equipment and piping (outside of pipeline system limits defined in accordance with local
regulatory requirements);
— — pipeline protection and support structures and components.
However, the assessment process defined herein can be applied in the lifetime extension assessment of the
above at the discretion of the user.
This document addresses life extension, which is a change to the original design premise. It is also applicable
to other changes to the design premise, such as MAOPmaximum allowable operating pressure (MAOP) re-
ratings or a change to the conveyed fluids, at the discretion of the user.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
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/
For the purposes of this document, the following terms and definitions apply.
ISO/DISFDIS 12747:20242025(en)
3.23.1 3.1
acceptance criteria
specified indicators or measures employed in assessing the ability of a component or system to perform its
intended function
3.33.2 3.2
ancillary component
component attached to the pipe or piping within the pipeline system (3.18(3.18)) with additional functions to
the conveyance of fluid, such as to monitor pipeline parameters or control pipeline condit
...