oSIST prEN ISO 15589-1:2024
(Main)Oil and gas industries including lower carbon energy - Cathodic protection of pipeline systems - Part 1: On-land pipelines (ISO/DIS 15589-1:2024)
Oil and gas industries including lower carbon energy - Cathodic protection of pipeline systems - Part 1: On-land pipelines (ISO/DIS 15589-1:2024)
ISO 15589-1:2015 specifies requirements and gives recommendations for the pre-installation surveys, design, materials, equipment, installation, commissioning, operation, inspection, and maintenance of cathodic protection systems for on-land pipelines, as defined in ISO 13623 or EN 14161 for the petroleum, petrochemical, and natural gas industries, and in EN 1594 or EN 12007‑1 and EN 12007‑3 used by gas supply industries in Europe.
All contents of this part of ISO 15589 are applicable to on-land pipelines and piping systems used in other industries and transporting other media such as industrial gases, waters, or slurries.
ISO 15589-1:2015 applies to buried pipelines, landfalls of offshore pipeline sections protected by on-shore based cathodic protection installations, and to immersed sections of on-land pipelines such as river or lake crossings.
ISO 15589-1:2015 specifies requirements for pipelines of carbon steel, stainless steel, cast iron, galvanized steel, or copper. If other pipeline materials are used, the criteria to apply are defined under the responsibility of the pipeline operator.
ISO 15589-1:2015 does not apply to pipelines made of reinforced concrete for which EN 12696 can be applied.
NOTE Special conditions sometimes exist where cathodic protection is ineffective or only partially effective. Such conditions can include shielding (e.g. disbonded coatings, thermal-insulating coatings, rocky soil, etc.) and unusual contaminants in the electrolyte.
Öl- und Gasindustrie einschließlich kohlenstoffarmer Energieträger - Kathodischer Korrosionsschutz für Rohrleitungssysteme - Teil 1: Rohrleitungen an Land (ISO/DIS 15589-1:2024)
Industries du pétrole et du gaz y compris les énergies à faible teneur en carbone - Protection cathodique des systèmes de transport par conduites - Partie 1: Conduites terrestres (ISO/DIS 15589-1:2024)
La présente partie de l'ISO 15589 spécifie les exigences et donne des recommandations pour les études de préinstallation, la conception, les matériaux, l'équipement, l'installation, la mise en service, l'exploitation, l'inspection et la maintenance des systèmes de protection cathodique destinés aux conduites terrestres. Les conduites terrestres sont définies dans l'ISO 13623 ou l'EN 14161 relatives aux industries du pétrole, pétrochimiques et du gaz naturel. Elles sont également décrites dans l'EN 1594, l'EN 12007-1 et l'EN 12007-3 utilisées par les industries de fourniture de gaz en Europe.
La présente partie de l'ISO 15589 est applicable aux conduites terrestres et aux systèmes de conduites utilisés dans d'autres industries et transportant d'autres fluides comme les gaz industriels, les eaux ou les boues liquides.
Dans l'ensemble du présent document, le terme « conduites terrestres » désigne :
— les conduites qui sont enterrées ;
— les atterrages de tronçons de conduites en mer protégées par des installations de protection cathodique basées à terre ;
— les tronçons immergés de conduites terrestres tels que les traversées de cours d'eau ou de lacs.
La présente partie de l'ISO 15589 spécifie les exigences concernant les conduites en acier au carbone, en acier inoxydable, en fonte, en acier galvanisé et en cuivre. Si d'autres matériaux sont utilisés pour les conduites, les critères de protection à appliquer doivent être placés sous la responsabilité de l'exploitant des conduites.
La présente partie de l'ISO 15589 ne s'applique pas aux conduites constituées de béton armé. L'ISO 12696 peut être appliquée aux conduites de ce type.
Note Dans des conditions particulières, la protection cathodique peut s'avérer inefficace ou seulement partiellement efficace. De telles conditions peuvent comprendre un effet d'écran (par exemple, des décollements de revêtements, des revêtements thermo-isolants, un sol rocheux, des selles de poids et des coussins de soutien non conducteurs) et la présence de contaminants inhabituels dans l'électrolyte.
Naftna in plinska industrija, vključno z nizkoogljično energijo - Katodna zaščita cevovodov - 1. del: Cevovodi na kopnem (ISO/DIS 15589-1:2024)
General Information
Relations
Overview
The oSIST prEN ISO 15589-1:2024 standard, titled Oil and gas industries including lower carbon energy - Cathodic protection of pipeline systems - Part 1: On-land pipelines (ISO/DIS 15589-1:2024), provides comprehensive guidance for the protection of on-land pipeline systems against corrosion using cathodic protection (CP) techniques. Published under the authority of the European Committee for Standardization (CEN), this standard updates and replaces previous versions to align with modern industry needs, focusing on pipelines used in petroleum, petrochemical, natural gas, and other industrial applications transporting fluids like industrial gases, water, or slurries.
The standard specifically addresses buried pipelines, river or lake crossings, and landfalls of offshore pipelines protected by onshore CP systems, applying to pipelines made from carbon steel, stainless steel, cast iron, galvanized steel, or copper. It excludes reinforced concrete pipelines, which are governed by other standards such as EN 12696.
Key Topics
oSIST prEN ISO 15589-1:2024:2024 covers all critical aspects of cathodic protection systems tailored for on-land pipeline infrastructure:
Pre-installation surveys and design
Ensures pipeline integrity through comprehensive evaluation before CP system implementation.Materials and equipment requirements
Specifies suitable pipeline materials and CP hardware, including impressed current stations and galvanic anodes.Installation and commissioning
Details best practices for system installation and initial performance verification.Operation, inspection, and maintenance
Provides criteria for maintaining CP efficacy over a pipeline’s lifecycle.Cathodic protection criteria
Defines protection potentials and alternative assessment methods, considering interference from AC and DC sources.Electrical continuity and isolation
Addresses the importance of electrical connections, isolating joints, and managing risks from contact between metallic structures.Coating and trench backfill selection
Offers guidance on coatings compatible with CP as well as selecting appropriate pipeline trench materials to maximize CP effectiveness.AC and DC interference mitigation
Identifies methods and equipment to reduce external electrical interference that could impact CP performance.Design reports and calculation of current demand
Emphasizes detailed documentation and technical calculations for CP current needs.
Applications
The ISO 15589-1 standard is vital for professionals involved in pipeline integrity management within several industries:
Oil and Gas Transportation
Protects onshore pipelines used for crude oil, refined products, natural gas, and petrochemicals.Lower Carbon Energy Pipelines
Applies to pipelines supporting the energy transition, including those carrying hydrogen or other lower carbon fuels.Industrial and Municipal Piping Systems
Relevant for pipelines transporting industrial gases, water, slurries, or other media requiring corrosion protection.Pipeline Design and Engineering Firms
Provides authoritative technical requirements for pipeline CP system design and specification.Maintenance and Inspection Services
Offers protocols to ensure ongoing CP system effectiveness and pipeline longevity.
Implementing this standard helps reduce corrosion-related failures, minimize environmental risks, prolong pipeline service life, and comply with regulatory frameworks.
Related Standards
oSIST prEN ISO 15589-1:2024 is part of a broader suite of pipeline and cathodic protection standards, including:
ISO 13623 / EN 14161 - General pipeline systems for the petroleum and natural gas industries
EN 1594 / EN 12007-1 / EN 12007-3 - Standards for gas supply industry pipelines
EN 12696 - Cathodic protection of reinforced concrete pipelines
ISO 15589-2 - Cathodic protection of offshore pipeline systems (complementary to Part 1)
ISO 8044 - Corrosion of metals and alloys - Basic terms and definitions, relevant for understanding corrosion mechanisms
These references ensure compatibility and consistency across pipeline design, material selection, and corrosion prevention methodologies.
Keywords: cathodic protection standard, on-land pipelines, pipeline corrosion protection, oil and gas pipeline standard, pipeline cathodic protection design, impressed current, galvanic anodes, pipeline integrity, European pipeline standards, ISO 15589-1, pipeline corrosion control.
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2024
Naftna in plinska industrija, vključno z nizkoogljično energijo - Katodna zaščita
cevovodov - 1. del: Cevovodi na kopnem (ISO/DIS 15589-1:2024)
Oil and gas industries including lower carbon energy - Cathodic protection of pipeline
systems - Part 1: On-land pipelines (ISO/DIS 15589-1:2024)
Öl- und Gasindustrie einschließlich kohlenstoffarmer Energieträger - Kathodischer
Korrosionsschutz für Rohrleitungssysteme - Teil 1: Rohrleitungen an Land (ISO/DIS
15589-1:2024)
Industries du pétrole et du gaz y compris les énergies à faible teneur en carbone -
Protection cathodique des systèmes de transport par conduites - Partie 1: Conduites
terrestres (ISO/DIS 15589-1:2024)
Ta slovenski standard je istoveten z: prEN ISO 15589-1
ICS:
75.200 Oprema za skladiščenje Petroleum products and
nafte, naftnih proizvodov in natural gas handling
zemeljskega plina equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
International
Standard
ISO/DIS 15589-1
ISO/TC 67/SC 2
Oil and gas industries including
Secretariat: UNI
lower carbon energy — Cathodic
Voting begins on:
protection of pipeline systems —
2024-04-05
Part 1:
Voting terminates on:
2024-06-28
On-land pipelines
Industries du pétrole, de la pétrochimie et du gaz naturel —
Protection cathodique des systèmes de transport par conduites —
Partie 1: Conduites terrestres
ICS: 75.200
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 is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
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STANDARDS MAY ON OCCASION HAVE TO
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POTENTIAL TO BECOME STANDARDS TO
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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/DIS 15589-1:2024(en)
DRAFT
ISO/DIS 15589-1:2024(en)
International
Standard
ISO/DIS 15589-1
ISO/TC 67/SC 2
Oil and gas industries including
Secretariat: UNI
lower carbon energy — Cathodic
Voting begins on:
protection of pipeline systems —
Part 1:
Voting terminates on:
On-land pipelines
Industries du pétrole, de la pétrochimie et du gaz naturel —
Protection cathodique des systèmes de transport par conduites —
Partie 1: Conduites terrestres
ICS: 75.200
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 is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2024
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
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Published in Switzerland Reference number
ISO/DIS 15589-1:2024(en)
ii
ISO/DIS 15589-1:2024(en)
Contents Page
Foreword .vi
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols and abbreviations . 5
4.1 Symbols .5
4.2 Abbreviations .6
5 Competence . 7
6 Cathodic protection criteria . 7
6.1 General .7
6.2 Protection potentials .8
6.3 Alternative assessment methods .9
6.3.1 100 mV cathodic potential shift .9
6.3.2 Other assessment methods .9
6.4 Criteria in the presence of AC .10
6.5 Criteria in the presence of DC.10
7 Pre-requisites for the application of cathodic protection .10
7.1 General .10
7.2 Electrical continuity .10
7.3 Electrical isolation .10
7.3.1 General .10
7.3.2 Locations .11
7.3.3 Isolating joints .11
7.3.4 Internal corrosion risks at isolating joints . 12
7.3.5 Contacts between metallic structures. 12
7.3.6 Electrical earthing systems . . 13
7.3.7 Lightning and overvoltage protection .14
7.3.8 Overvoltage protection devices for DC isolation .14
7.4 Coating . 15
7.4.1 General . 15
7.4.2 Factory-applied coatings .16
7.4.3 Field joint coatings .16
7.4.4 Coating for trenchless pipelines .16
7.4.5 Air to electrolyte interface .17
7.4.6 Compatibility of coatings and wraps with cathodic protection .17
7.4.7 Thermal insulation .17
7.4.8 Reinforced concrete weight coating .17
7.5 Selection of pipe trench backfill material.17
7.6 Buried casings for pipelines .18
7.6.1 General .18
7.6.2 Casings that shield cathodic protection current .18
7.6.3 Casings that pass cathodic protection current .18
7.7 Equipment for the reduction of AC interference .19
7.8 Equipment for the mitigation of DC interference .19
8 Basic requirements for cathodic protection design . 19
8.1 General .19
8.2 Basic information for cathodic protection design .19
8.3 Contents of cathodic protection design report . 20
8.4 Cathodic protection current demand .21
8.4.1 Calculation of the theoretical total current demand .21
8.4.2 Current demand based on current density values for coated pipelines .21
iii
ISO/DIS 15589-1:2024(en)
8.5 Cathodic protection equipment . 23
8.5.1 Cathodic protection cables . 23
8.5.2 Cable connection .24
8.5.3 Distribution boxes and Test stations . 25
8.6 Temporary protection . 26
8.7 Specific case of existing pipelines . 26
8.7.1 General . 26
8.7.2 Parallel pipelines . 26
8.7.3 Parallelism or crossing with AC power systems .27
8.8 Trenchless installation methods .27
9 Impressed current stations .27
9.1 General .27
9.2 Power supply . 28
9.3 Groundbeds . 29
9.3.1 General . 29
9.3.2 Deep-well groundbeds . 29
9.3.3 Shallow groundbeds . . 30
9.3.4 Impressed-current anodes and conductive backfill . 30
9.4 Output control .32
9.4.1 General .32
9.4.2 Current distribution for multiple pipelines .32
9.4.3 Potential control .32
10 Galvanic anode systems .33
10.1 General . 33
10.2 Design requirements . 33
10.3 Zinc anodes . 34
10.4 Magnesium anodes . 35
10.5 Design of the anode system. 36
10.6 Anode backfill. 38
10.7 Cables and cable connections . 38
10.8 Anode installation . 38
11 Monitoring facilities .38
11.1 General . 38
11.2 Locations of test stations . 38
11.3 Description of test stations . 39
11.4 Use of probes and coupons . 39
11.5 Bonding to other pipelines . 40
11.6 Test facilities at cased crossings . 40
11.7 Test facilities at isolating joints . 40
11.8 Line current monitoring test stations . 40
11.9 Drain-point test facilities . 40
11.10 Miscellaneous monitoring facilities . 40
12 Commissioning. 41
12.1 General .41
12.2 Preliminary tests . .41
12.3 Start up .42
12.3.1 Impressed current stations .42
12.3.2 Galvanic anodes .43
12.3.3 Drainage stations .43
12.3.4 Test stations.43
12.4 Verification of cathodic protection effectiveness .43
12.4.1 General .43
12.4.2 Measurements of DC potential and AC voltage . 44
12.4.3 Current measurements . 44
12.4.4 Adjustments . 44
12.5 Commissioning report . 44
12.5.1 Installation documentation . 44
iv
ISO/DIS 15589-1:2024(en)
12.5.2 Commissioning measurements .45
13 Monitoring, inspection, and maintenance .45
13.1 General .45
13.2 Implementation of inspection . 46
13.3 Inspection intervals . 46
13.4 Remote monitoring . 49
13.5 Specialized surveys . 49
13.6 Monitoring plan . 49
13.7 Monitoring equipment . 49
13.8 Maintenance and repair . 50
14 Documentation .50
14.1 Design documentation . 50
14.1.1 General . 50
14.1.2 Construction details and installation procedures .51
14.2 Commissioning documentation . .52
14.3 Operating and maintenance documentation .52
14.3.1 General .52
14.3.2 Inspection and monitoring data . 53
14.3.3 Maintenance records . 53
Annex A (normative) Cathodic protection measurements .54
Annex B (normative) Electrical interference .62
Annex C (informative) Fault detection of impressed-current systems during operation .66
Annex D (informative) Description of specialized surveys .68
Annex E (informative) Calculation of the CP potential attenuation .75
Annex F (informative) Electrical tests for isolating joints before installation .78
Annex G (informative) Internal corrosion at insulating joints .79
Bibliography .82
v
ISO/DIS 15589-1:2024(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 documents 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).
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent
rights identified during the development of the document will be in the Introduction and/or on the ISO list of
patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment,
as well as information about ISO's adherence to the WTO principles in the Technical Barriers to Trade (TBT)
see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 67, Oil and gas industries including lower carbon
energy, Subcommittee SC 2, Pipeline transportation systems.
This third edition cancels and replaces the second edition (ISO 15589-1:2015), which has been technically
revised with the following changes:
— cathodic protection criteria have been extended with further clarification on the application of the
criteria;
— requirements for design have been more detailed and periodicities for inspection of cathodic equipment
have been enlarged, and the option for remote monitoring added;
— requirements for measurements and testing during commissioning have been further detailed.
ISO 15589 consists of the following parts, under the general title Petroleum, petrochemical and natural gas
industries — Cathodic protection of pipeline systems:
— Part 1: On-land pipelines
— Part 2: Offshore pipelines
vi
ISO/DIS 15589-1:2024(en)
Introduction
Pipeline cathodic protection is achieved by the supply of sufficient direct current to the external pipe
surface, so that the steel-to-electrolyte potential is lowered to values at which external corrosion is reduced
to an insignificant rate.
Cathodic protection is normally used in combination with a suitable protective coating system to protect
the external surfaces of steel pipelines from corrosion.
It is necessary that users of this part of ISO 15589 be aware that further or differing requirements can be
needed for individual applications. This part of ISO 15589 is not intended to inhibit the use of alternative
equipment or engineering solutions for the individual application. This can be particularly applicable
where there is innovative or developing technology. It is necessary that, where an alternative is offered, any
variations from this part of ISO 15589 be identified and documented.
vii
DRAFT International Standard ISO/DIS 15589-1:2024(en)
Oil and gas industries including lower carbon energy —
Cathodic protection of pipeline systems —
Part 1:
On-land pipelines
1 Scope
This part of ISO 15589 specifies requirements and gives recommendations for the pre-installation surveys,
design, materials, equipment, installation, commissioning, operation, inspection, and maintenance of
cathodic protection systems for on-land pipelines. On-land pipelines are defined in ISO 13623 or EN 14161
for the petroleum, petrochemical, and natural gas industries. They are also described in EN 1594, EN 12007-
1 and EN 12007-3, which are used by gas supply industries in Europe.
This part of ISO 15589 is applicable to on-land pipelines and piping systems used in other industries and
transporting other media such as industrial gases, waters, or slurries.
Throughout this document on-land pipelines means:
— pipelines that are buried,
— landfalls of offshore pipeline sections protected by onshore based cathodic protection installations,
— immersed sections of on-land pipelines such as river or lake crossings.
This part of ISO 15589 specifies requirements for pipelines of carbon steel, stainless steel, cast iron,
galvanized steel, and copper. If other pipeline materials are used, the protection criteria to apply shall be the
responsibility of the pipeline operator.
This part of ISO 15589 does not apply to pipelines made of reinforced concrete. ISO 12696 can be applied to
reinforced concrete.
Note Special conditions sometimes exist where cathodic protection is ineffective or only partially effective. Such
conditions can include shielding (e.g. disbonded coatings, thermal-insulating coatings, rocky soil, weight saddles and
non-conducting support cushions.) and unusual contaminants in the electrolyte.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO 8044, Corrosion of metals and alloys — Vocabulary
ISO 10012, Measurement management systems — Requirements for measurement processes and measuring
equipment
ISO 13623, Petroleum and natural gas industries — Pipeline transportation systems
ISO 13847, Petroleum and natural gas industries — Pipeline transportation systems — Welding of pipelines
ISO 15257, Cathodic protection — Competence levels of cathodic protection persons — Basis for a certification
scheme
ISO/DIS 15589-1:2024(en)
ISO 18086, Corrosion of metals and alloys — Determination of AC corrosion — Protection criteria
ISO 21809 (all parts), Petroleum and natural gas industries — External coatings for buried or submerged
pipelines used in pipeline transportation systems
ISO 21857, Petroleum, petrochemical and natural gas industries — Prevention of corrosion on pipeline systems
influenced by stray currents
ISO 22426, Assessment of the effectiveness of cathodic protection based on coupon measurements
IEC 60079-10-1, Explosive atmospheres — Part 10-1: Classification of areas — Explosive gas atmospheres
IEC 60529, Degrees of protection provided by enclosures (IP Code)
IEC 62561-3, Lightning protection system components (LPSC) - Part 3: Requirements for isolating spark gaps
(ISGs)
EN 1594, Gas infrastructure — Pipelines for maximum operating pressure over 16 bar — Functional
requirements
EN 12007-3, Gas infrastructure — Pipelines for maximum operating pressure up to and including 16 bar – Part
3: Specific functional recommendations for steel
EN 14161, Petroleum and natural gas industries — Pipeline transportation systems (ISO 13623:2009 modified)
IEC 62305-1, Protection against lightning- Part 1: General principles
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 8044 and the following apply.
3.1
anode backfill
added material immediately surrounding a buried anode
3.2
bond
metal conductor, usually copper, connecting two points on the same or on different structures
3.3
cathodic protection system
impressed current and galvanic anode systems consist of all the equipment necessary for the application
of cathodic protection, such as impressed current installations, power supplies impressed current anodes,
galvanic anodes, bonds and cables
3.4
coupon
metal sample of defined dimensions made of a metal equivalent to the metal of the pipeline
3.5
coating defect
anomaly in the coating that results in the steel surface making direct contact with the surrounding
electrolyte.
3.6
DC decoupling device
equipment that provides a low-impedance path for AC and high resistance for DC
EXAMPLE Polarization cells, capacitors, or diode assemblies
ISO/DIS 15589-1:2024(en)
3.7
drain point
location of the cable connection to the protected pipeline through which the protective current returns to
its source
3.8
drainage
Transfer of stray current between structures by means of a deliberate bond
Note 1 to entry: See ISO 21587 for drainage devices (direct drainage bond, resistance drainage bond, unidirectional
drainage bond, and forced drainage bond).
3.9
drainage station
equipment and materials required to provide drainage of stray currents from affected systems
3.10
galvanic anode
see Definition in ISO 8044 chapter 7.4.10
3.11
galvanic anode station
equipment and materials required to provide cathodic protection by the use of galvanic anodes
Note 1 to entry: Such materials and equipment include galvanic anodes and cables
3.12
groundbed
system of buried or immersed anodes
3.13
impressed current anode
electrode that delivers cathodic protection current
3.14
impressed current station
equipment and materials required to provide cathodic protection by impressed current
Note 1 to entry: Such materials and equipment include impressed current anodes, cables, and a DC source.
3.15
instant-off potential
See 3.23 “off potential”
3.16
IR drop
voltage that is the product of all currents flowing through the cathodic protection circuit and the resistance
of the current path (mainly the electrolyte and the pipeline)
Note 1 to entry: This is derived from Ohm’s law (U = I × R)
3.17
IR free potential
coating defect or coupon to electrolyte potential without the voltage error caused by the IR drop due to the
protection current or any other current
3.18
isolating joint
electrically insulating component inserted between two lengths of pipe to prevent electrical continuity
between them
EXAMPLE Monobloc isolating joint, isolating flange
ISO/DIS 15589-1:2024(en)
3.19
isolating spark gap
component with discharge distance for isolating electrically conductive installation sections
Note 1 to entry: In the event of lighting strike, the installation sections are temporarily connected conductively as the
result of response of the discharge
3.20
local earthing
earthed metallic electrode not directly electrically connected to any other main earthing system
3.21
measuring point
location where the actual potential measurement takes place
Note 1 to entry: In the case of pipe-to-electrolyte potential measurement, this refers to the location of the reference
electrode.
3.22
on-potential
see Definition in ISO 8044 chapter 5.14
3.23
off potential
see Definition in ISO 8044 chapter 5.13
Note 1 to entry: The off potential of a pipeline is always a mixed potential resulting from the IR free (aline spelling
over the entire text) potentials of multiple coating defects
3.24
structure to-electrolyte potential
difference in potential between a pipeline and a specified reference electrode in contact with the electrolyte.
3.25
pitting resistance equivalent number PREN
number, developed to reflect and predict the pitting resistance of a stainless steel, based upon the
proportions of Cr, Mo, W, and N in the chemical composition of the alloy
3.26
polarization
change of pipe-to-electrolyte potential with respect to the free corrosion potential caused by the application
of an external electrical current
3.27
probe
device incorporating a coupon that provides measurements of parameters used to assess the effectiveness
of cathodic protection and/or corrosion risk
3.28
protection potential
pipe-to-electrolyte potential at which the metal corrosion rate is acceptable
3.29
reference electrode
see Definition in ISO 8044 chapter 7.1.19
3.30
remote earth
part of the electrolyte in which no measurable voltages, caused by current flow, occur between any two
points
Note 1 to entry: This condition generally prevails outside the zone of influence of an earth electrode, an earthing
system, an anode groundbed, or a protected pipeline
ISO/DIS 15589-1:2024(en)
3.31
rock jacket coating
coating that provides mechanical protection to the pipeline and is applied as a flexible coating
3.32
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Frequently Asked Questions
oSIST prEN ISO 15589-1:2024 is a draft published by the Slovenian Institute for Standardization (SIST). Its full title is "Oil and gas industries including lower carbon energy - Cathodic protection of pipeline systems - Part 1: On-land pipelines (ISO/DIS 15589-1:2024)". This standard covers: ISO 15589-1:2015 specifies requirements and gives recommendations for the pre-installation surveys, design, materials, equipment, installation, commissioning, operation, inspection, and maintenance of cathodic protection systems for on-land pipelines, as defined in ISO 13623 or EN 14161 for the petroleum, petrochemical, and natural gas industries, and in EN 1594 or EN 12007‑1 and EN 12007‑3 used by gas supply industries in Europe. All contents of this part of ISO 15589 are applicable to on-land pipelines and piping systems used in other industries and transporting other media such as industrial gases, waters, or slurries. ISO 15589-1:2015 applies to buried pipelines, landfalls of offshore pipeline sections protected by on-shore based cathodic protection installations, and to immersed sections of on-land pipelines such as river or lake crossings. ISO 15589-1:2015 specifies requirements for pipelines of carbon steel, stainless steel, cast iron, galvanized steel, or copper. If other pipeline materials are used, the criteria to apply are defined under the responsibility of the pipeline operator. ISO 15589-1:2015 does not apply to pipelines made of reinforced concrete for which EN 12696 can be applied. NOTE Special conditions sometimes exist where cathodic protection is ineffective or only partially effective. Such conditions can include shielding (e.g. disbonded coatings, thermal-insulating coatings, rocky soil, etc.) and unusual contaminants in the electrolyte.
ISO 15589-1:2015 specifies requirements and gives recommendations for the pre-installation surveys, design, materials, equipment, installation, commissioning, operation, inspection, and maintenance of cathodic protection systems for on-land pipelines, as defined in ISO 13623 or EN 14161 for the petroleum, petrochemical, and natural gas industries, and in EN 1594 or EN 12007‑1 and EN 12007‑3 used by gas supply industries in Europe. All contents of this part of ISO 15589 are applicable to on-land pipelines and piping systems used in other industries and transporting other media such as industrial gases, waters, or slurries. ISO 15589-1:2015 applies to buried pipelines, landfalls of offshore pipeline sections protected by on-shore based cathodic protection installations, and to immersed sections of on-land pipelines such as river or lake crossings. ISO 15589-1:2015 specifies requirements for pipelines of carbon steel, stainless steel, cast iron, galvanized steel, or copper. If other pipeline materials are used, the criteria to apply are defined under the responsibility of the pipeline operator. ISO 15589-1:2015 does not apply to pipelines made of reinforced concrete for which EN 12696 can be applied. NOTE Special conditions sometimes exist where cathodic protection is ineffective or only partially effective. Such conditions can include shielding (e.g. disbonded coatings, thermal-insulating coatings, rocky soil, etc.) and unusual contaminants in the electrolyte.
oSIST prEN ISO 15589-1:2024 is classified under the following ICS (International Classification for Standards) categories: 75.200 - Petroleum products and natural gas handling equipment. The ICS classification helps identify the subject area and facilitates finding related standards.
oSIST prEN ISO 15589-1:2024 has the following relationships with other standards: It is inter standard links to SIST EN ISO 15589-1:2017. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase oSIST prEN ISO 15589-1:2024 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
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