SIST EN ISO 18797-2:2021

Petroleum, petrochemical and natural gas industries - External corrosion protection of risers by coatings and linings - Part 2: Maintenance and field repair coatings for riser pipes (ISO 18797-2:2021)

This document specifies the selection criteria and minimum requirements for protective coating systems for maintenance and field repair of risers exposed to conditions in the splash zone. It is applicable for maintenance requirements and field repairs of riser coatings.
This document does not apply to the selection of techniques and materials used to restore integrity of the risers to be coated, nor does it apply to the selection of additional mechanical protective materials that are not part of the coating systems described in this document.
New construction shop applied riser coatings are covered in ISO 18797-1. Compatible maintenance and repair coating systems specified in ISO 18797-1 are covered in this document.

Erdöl-, petrochemische und Erdgasindustrie - Äußerer Korrosionsschutz von Steigleitungen durch Beschichtungen und Auskleidungen - Teil 2: Wartungs- und Reparaturbeschichtungen für Steigleitungen (ISO 18797-2:2021)

Industries du pétrole, de la pétrochimie et du gaz naturel - Protection de la corrosion externe des tubes de production par revêtements et doublures - Partie 2: Entretien et réparation in situ des tubes de production (ISO 18797-2:2021)

Le présent document spécifie les critères de sélection et les exigences minimales pour les systèmes de revêtement de protection dans le cadre de l'entretien et de la réparation in situ des risers exposés aux conditions de la zone d'action des vagues. Il s'applique aux exigences d'entretien et aux réparations in situ des revêtements des risers.
Le présent document ne s'applique pas à la sélection des techniques et des matériaux utilisés pour restaurer l'intégrité des risers à revêtir, ni à la sélection de matériaux de protection mécanique supplémentaires qui ne font pas partie des systèmes de revêtement décrits dans le présent document.
Les revêtements de risers appliqués en atelier sur de nouvelles constructions sont couverts par l'ISO 18797-1. Les systèmes de revêtement d'entretien et de réparation compatibles spécifiés dans l'ISO 18797-1 sont couverts par le présent document.

Petrokemična industrija ter industrija za predelavo nafte in zemeljskega plina - Zunanja protikorozijska zaščita dvižnih cevi s prevlekami in oblogami - 2. del: Vzdrževanje in popravilo proizvodnih cevi na kraju samem (ISO 18797-2:2021)

General Information

• Status: Published
• Public Enquiry End Date: 24-Sep-2020
• Publication Date: 11-Oct-2021
• ICS: 25.220.01 - Surface treatment and coating in general
• ICS: 75.180.10 - Exploratory, drilling and extraction equipment
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 06-Oct-2021
• Due Date: 11-Dec-2021
• Completion Date: 12-Oct-2021
• Ref Project: EN ISO 18797-2:2021 - Petroleum, petrochemical and natural gas industries - External corrosion protection of risers by coatings and linings - Part 2: Maintenance and field repair coatings for riser pipes (ISO 18797-2:2021)

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-2021
Petrokemična industrija ter industrija za predelavo nafte in zemeljskega plina -
Zunanja protikorozijska zaščita dvižnih cevi s prevlekami in oblogami - 2. del:
Vzdrževanje in popravilo proizvodnih cevi na kraju samem (ISO 18797-2:2021)
Petroleum, petrochemical and natural gas industries - External corrosion protection of
risers by coatings and linings - Part 2: Maintenance and field repair coatings for riser
pipes (ISO 18797-2:2021)
Erdöl-, petrochemische und Erdgasindustrie - Äußerer Korrosionsschutz von
Steigleitungen durch Beschichtungen und Auskleidungen - Teil 2: Wartungs- und
Reparaturbeschichtungen für Steigleitungen (ISO 18797-2:2021)
Industries du pétrole, de la pétrochimie et du gaz naturel - Protection de la corrosion
externe des tubes de production par revêtements et doublures - Partie 2: Entretien et
réparation in situ des tubes de production (ISO 18797-2:2021)
Ta slovenski standard je istoveten z: EN ISO 18797-2:2021
ICS:
25.220.01 Površinska obdelava in Surface treatment and
prevleke na splošno coating in general
75.180.10 Oprema za raziskovanje, Exploratory, drilling and
vrtanje in odkopavanje extraction equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 18797-2
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2021
EUROPÄISCHE NORM
ICS 75.180.10
English Version
Petroleum, petrochemical and natural gas industries -
External corrosion protection of risers by coatings and
linings - Part 2: Maintenance and field repair coatings for
riser pipes (ISO 18797-2:2021)
Industries du pétrole, de la pétrochimie et du gaz Erdöl-, petrochemische und Erdgasindustrie - Äußerer
naturel - Protection de la corrosion externe des tubes Korrosionsschutz von Steigleitungen durch
de production par revêtements et doublures - Partie 2: Beschichtungen und Auskleidungen - Teil 2: Wartungs-
Entretien et réparation in situ des tubes de production und Reparaturbeschichtungen für Steigleitungen (ISO
(ISO 18797-2:2021) 18797-2:2021)
This European Standard was approved by CEN on 28 August 2021.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 18797-2:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 18797-2:2021) has been prepared by Technical Committee ISO/TC 67
"Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries"
in collaboration with Technical Committee CEN/TC 12 “Materials, equipment and offshore structures
for petroleum, petrochemical and natural gas industries” the secretariat of which is held by NEN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by March 2022, and conflicting national standards shall
be withdrawn at the latest by March 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 18797-2:2021 has been approved by CEN as EN ISO 18797-2:2021 without any
modification.
INTERNATIONAL ISO
STANDARD 18797-2
First edition
2021-09
Petroleum, petrochemical and natural
gas industries — External corrosion
protection of risers by coatings and
linings —
Part 2:
Maintenance and field repair coatings
for riser pipes
Industries du pétrole, de la pétrochimie et du gaz naturel —
Protection de la corrosion externe des tubes de production par
revêtements et doublures —
Partie 2: Entretien et réparation in situ des tubes de production
Reference number
ISO 18797-2:2021(E)
©
ISO 2021
ISO 18797-2:2021(E)
© ISO 2021
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: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved

ISO 18797-2:2021(E)
Contents Page
Foreword .vi
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 4
4 Symbols and abbreviated terms . 7
4.1 Symbols . 7
4.2 Abbreviated terms . 7
5 Coating types . 7
6 General requirements . 8
6.1 Client’s requirements . 8
6.1.1 Approval of repair coating and repair method . 8
6.1.2 Specification of purchase order mandatory information . 8
6.1.3 Specification of purchase order additional information . 9
6.2 Contractor’s requirements . 9
6.2.1 Documented information . 9
6.2.2 Marking of coating materials .10
6.3 Rounding .10
6.4 Conformity to requirements . .10
6.5 Criteria for the condition assessment of an existing coating .10
6.5.1 General – Evaluation of coating condition .10
6.5.2 Applicable inspection techniques .11
7 Qualification processes and application procedures .11
7.1 General .11
7.2 APS and ITP .12
7.2.1 General.12
7.2.2 APS .12
7.2.3 ITP .13
7.3 Technical assessment of coating conformity .13
7.4 Procedure qualification trial .13
7.5 Pre-production trial .14
7.6 Production, testing and inspection .15
7.6.1 General.15
7.6.2 Inspection documents and traceability .15
8 Selection criteria for repair coatings .15
8.1 General .15
8.2 Application constraints.16
8.2.1 Wet substrates .16
8.2.2 Contamination by soluble salts .17
8.2.3 Dust contamination .17
8.2.4 Contamination by oil, grease and other petroleum-like products .17
8.2.5 Compatibility with existing coating .17
8.2.6 Feasibility of surface cleaning .18
8.2.7 Space and riser access constraints .18
8.2.8 Time constraints .18
8.2.9 Temperatures and relative humidity .18
8.2.10 Coating continuity .18
8.3 Operational conditions.19
8.3.1 Resistance to ageing, weathering and water .19
8.3.2 Resistance to mechanical loads .19
8.3.3 Interaction with cathodic protection .19
ISO 18797-2:2021(E)
9 Test programs .19
9.1 Substrate conditions used for tests .19
9.2 Inspections, tests and frequencies .19
9.3 Thickness testing .20
9.4 Retest .20
10 Non-crystalline low-viscosity polyolefin-based coatings .21
10.1 Coating identification .21
10.2 Description of the coatings .21
10.3 Surface preparation .22
10.4 Application of coatings .22
10.4.1 General.22
10.4.2 Overlap .22
10.5 Testing of coatings .22
10.5.1 General.22
10.5.2 Thickness .22
10.5.3 Glass transition temperature and crystallization temperature .23
10.5.4 Holiday detection .23
10.5.5 Drip resistance .23
10.5.6 Adhesion to pipe surface and existing coating . .23
10.5.7 Lap shear resistance .24
10.5.8 Specific electrical insulation resistance .24
10.5.9 Impact resistance .24
10.5.10 Indentation resistance .24
10.5.11 Cathodic disbondment resistance .25
10.5.12 Resistance to ageing and weathering . .25
10.5.13 Peel strength between layers of outer wrap .25
10.5.14 Thermal ageing resistance .26
10.5.15 Hot-water immersion test .26
11 Petrolatum and wax-based tape wrap systems .31
11.1 Coating identification .31
11.2 Description of the tape wrap systems . .32
11.2.1 Petrolatum tape wrap systems (type 11A) .32
11.2.2 Wax-based tape wrap systems (type 11B) .32
11.3 Surface preparation .32
11.4 Application of coating systems .32
11.4.1 General.32
11.4.2 Overlap .32
11.5 Testing of the coating systems .33
11.5.1 General.33
11.5.2 Density .33
11.5.3 Dielectric strength .33
11.5.4 Thickness .33
11.5.5 Holiday detection .34
11.5.6 Impact resistance .34
11.5.7 Specific electrical insulation resistance .34
11.5.8 Cathodic disbondment resistance .34
11.5.9 Adhesion to pipe surface and existing coating . .34
11.5.10 Drip resistance .35
11.5.11 Hot water immersion test .35
11.5.12 Resistance to ageing and weathering . .35
12 Polychloroprene-based elastomeric coatings .41
12.1 Coating identification .41
12.2 Description of the coatings .41
12.3 Surface preparation .41
12.4 Application of the coating .41
12.4.1 General.41
12.4.2 Overlap .42
iv © ISO 2021 – All rights reserved

ISO 18797-2:2021(E)
12.5 Testing of the coatings .42
12.5.1 General.42
12.5.2 Visual appearance .42
12.5.3 Thickness .42
12.5.4 Holiday detection .42
12.5.5 Hardness .42
12.5.6 Adhesion to pipe surface and existing coating . .42
12.5.7 Cathodic disbondment resistance .43
12.5.8 Density .43
12.5.9 Rheometer curve .43
12.5.10 Tensile strength .43
12.5.11 Elongation at break . . .43
12.5.12 Tear strength .43
12.5.13 Electrical volume resistivity .43
12.5.14 Ozone resistance .43
12.5.15 Resistance to seawater .44
12.5.16 Hot-water immersion test .44
12.5.17 Thermal ageing resistance .44
12.5.18 Resistance to ageing and weathering . .44
13 Liquid-applied epoxy coatings .46
13.1 Coating identification .46
13.2 Description of the liquid-applied epoxy coating .47
13.3 Surface preparation .47
13.4 Application of the coatings .47
13.4.1 General.47
13.4.2 Overlap .47
13.5 Testing of the coatings .47
13.5.1 General.47
13.5.2 Dry-film thickness .48
13.5.3 Holiday detection .48
13.5.4 Hardness .48
13.5.5 Impact resistance .48
13.5.6 Indentation resistance .48
13.5.7 Specific electrical insulation resistance .48
13.5.8 Cathodic disbondment resistance .49
13.5.9 Adhesion to pipe surface and existing coating . .49
13.5.10 Thermal ageing resistance .49
13.5.11 Hot-water immersion test .49
13.5.12 Resistance to ageing and weathering . .49
Annex A (informative) Likelihood of exposure in splash zone area .54
Annex B (informative) Tests for coatings applied on wet substrates .56
Bibliography .65
ISO 18797-2:2021(E)
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 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, Materials, equipment and offshore
structures for petroleum, petrochemical and natural gas industries, in collaboration with the European
Committee for Standardization (CEN) Technical Committee CEN/TC 12, Materials, equipment and
offshore structures for petroleum, petrochemical and natural gas industries, in accordance with the
Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
A list of all parts in the ISO 18797 series can be found on the ISO website.
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.
vi © ISO 2021 – All rights reserved

ISO 18797-2:2021(E)
Introduction
This document has been developed in response to worldwide demand for minimum specifications for
field applied maintenance and repair coatings for riser pipes. ISO 18797-1 specifies the shop applied
coatings for risers. Coated offshore risers are intermittently exposed to varying conditions. These
include – but are not limited to – sunlight, rain, snow, hail, water spray, salt spray, high humidity,
fluctuating ambient temperatures (varying from sub-zero to high temperature), water currents, and
impacts from waves, drifting debris and marine growth. Exposure to such conditions can cause severe
coating deterioration in time, resulting in ineffective corrosion prevention of the steel riser pipe.
Users of this document are advised that further or differing requirements can be utilized for individual
applications. This document can also be used for the maintenance and repair of coatings on other types
of structures in the offshore splash zone, such as jetty piles and platform legs. This document does not
limit the contractor or the manufacturer from proposing, or from accepting, alternative engineering
solutions for the individual application. This can be particularly applicable where there is innovative or
developing technology. Where an alternative is proposed, the specification issuer is expected to identify
any deviations from this document and provide details.
INTERNATIONAL STANDARD ISO 18797-2:2021(E)
Petroleum, petrochemical and natural gas industries —
External corrosion protection of risers by coatings and
linings —
Part 2:
Maintenance and field repair coatings for riser pipes
1 Scope
This document specifies the selection criteria and minimum requirements for protective coating
systems for maintenance and field repair of risers exposed to conditions in the splash zone. It is
applicable for maintenance requirements and field repairs of riser coatings.
This document does not apply to the selection of techniques and materials used to restore integrity of
the risers to be coated, nor does it apply to the selection of additional mechanical protective materials
that are not part of the coating systems described in this document.
New construction shop applied riser coatings are covered in ISO 18797-1. Compatible maintenance and
repair coating systems specified in ISO 18797-1 are covered in this document.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 34-1, Rubber, vulcanized or thermoplastic — Determination of tear strength — Part 1: Trouser, angle
and crescent test pieces
ISO 37, Rubber, vulcanized or thermoplastic — Determination of tensile stress-strain properties
ISO 48-2, Rubber, vulcanized or thermoplastic — Determination of hardness — Part 2: Hardness between
10 IRHD and 100 IRHD
ISO 527-1, Plastics — Determination of tensile properties — Part 1: General principles
ISO 527-2, Plastics — Determination of tensile properties — Part 2: Test conditions for moulding and
extrusion plastics
ISO 527-3, Plastics — Determination of tensile properties — Part 3: Test conditions for films and sheets
ISO 868, Plastics and ebonite — Determination of indentation hardness by means of a durometer (Shore
hardness)
ISO 1183-1, Plastics — Methods for determining the density of non-cellular plastics — Part 1: Immersion
method, liquid pycnometer method and titration method
ISO 1431-1, Rubber, vulcanized or thermoplastic — Resistance to ozone cracking — Part 1: Static and
dynamic strain testing
ISO 1523, Determination of flash point — Closed cup equilibrium method
ISO 1817, Rubber, vulcanized or thermoplastic — Determination of the effect of liquids
ISO 18797-2:2021(E)
ISO 2781, Rubber, vulcanized or thermoplastic — Determination of density
ISO 2808, Paints and varnishes — Determination of film thickness
ISO 2811-1, Paints and varnishes — Determination of density — Part 1: Pycnometer method
ISO 3233-1, Paints and varnishes — Determination of percentage volume of non-volatile matter — Part 1:
Method using a coated test panel to determine non-volatile matter and to determine dry-film density by the
Archimedes' principle
ISO 3251, Paints, varnishes and plastics — Determination of non-volatile-matter content
ISO 3801, Textiles — Woven fabrics — Determination of mass per unit length and mass per unit area
ISO 4591, Plastics — Film and sheeting — Determination of average thickness of a sample, and average
thickness and yield of a roll, by gravimetric techniques (gravimetric thickness)
ISO 4593, Plastics — Film and sheeting — Determination of thickness by mechanical scanning
ISO 4624, Paints and varnishes — Pull-off test for adhesion
ISO 4628-2, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity
and size of defects, and of intensity of uniform changes in appearance — Part 2: Assessment of degree of
blistering
ISO 4628-3, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity and
size of defects, and of intensity of uniform changes in appearance — Part 3: Assessment of degree of rusting
ISO 4628-4, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity
and size of defects, and of intensity of uniform changes in appearance — Part 4: Assessment of degree of
cracking
ISO 4628-5, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity and
size of defects, and of intensity of uniform changes in appearance — Part 5: Assessment of degree of flaking
ISO 4628-6, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity
and size of defects, and of intensity of uniform changes in appearance — Part 6: Assessment of degree of
chalking by tape method
ISO 4892-2, Plastics — Methods of exposure to laboratory light sources — Part 2: Xenon-arc lamps
ISO 6502-2, Rubber — Measurement of vulcanization characteristics using curemeters — Part 2: Oscillating
disc curemeter
ISO 6964, Polyolefin pipes and fittings — Determination of carbon black content by calcination and
pyrolysis — Test method
ISO 8501-1, Preparation of steel substrates before application of paints and related products — Visual
assessment of surface cleanliness — Part 1: Rust grades and preparation grades of uncoated steel substrates
and of steel substrates after overall removal of previous coatings
ISO 8501-4, Preparation of steel substrates before application of paints and related products — Visual
assessment of surface cleanliness — Part 4: Initial surface conditions, preparation grades and flash rust
grades in connection with high-pressure water jetting
ISO 8502-3, Preparation of steel substrates before application of paints and related products — Tests for
the assessment of surface cleanliness — Part 3: Assessment of dust on steel surfaces prepared for painting
(pressure-sensitive tape method)
ISO 8
...