prEN ISO 21809-2

SLOVENSKI STANDARD
01-februar-2021
Naftna industrija in industrija zemeljskega plina - Zunanje prevleke za cevovode,
zakopane v zemljo ali potopljene v vodo, v sistemih cevovodnega transporta - 2.
del: Enoplastne epoksidne prevleke, nataljene na podlago (ISO/DIS 21809-2:2020)
Petroleum and natural gas industries - External coatings for buried or submerged
pipelines used in pipeline transportation systems - Part 2: Single layer fusion-bonded
epoxy coatings (ISO/DIS 21809-2:2020)
Erdöl- und Erdgasindustrie - Umhüllungen für erd- und wasserverlegte Rohrleitungen in
Transportsystemen - Teil 2: Einschicht-Epoxipulverbeschichtungen (ISO/DIS 21809-
2:2020)
Industries du pétrole et du gaz naturel - Revêtements externes des conduites enterrées
et immergées utilisées dans les systèmes de transport par conduites - Partie 2:
Revêtements monocouches à base de résine époxydique appliquée par fusion (ISO/DIS
21809-2:2020)
Ta slovenski standard je istoveten z: prEN ISO 21809-2
ICS:
25.220.99 Druge obdelave in prevleke Other treatments and
coatings
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 21809-2
ISO/TC 67/SC 2 Secretariat: UNI
Voting begins on: Voting terminates on:
2020-12-08 2021-03-02
Petroleum and natural gas industries — External coatings
for buried or submerged pipelines used in pipeline
transportation systems —
Part 2:
Single layer fusion-bonded epoxy coatings
Industries du pétrole et du gaz naturel — Revêtements externes des conduites enterrées ou immergées
utilisées dans les systèmes de transport par conduites —
Partie 2: Revêtements monocouches à base de résine époxydique appliquée par fusion
ICS: 75.200
THIS DOCUMENT IS A DRAFT CIRCULATED
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THEREFORE SUBJECT TO CHANGE AND MAY
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STANDARD UNTIL PUBLISHED AS SUCH.
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NATIONAL REGULATIONS.
ISO/DIS 21809-2:2020(E)
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TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
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©
PROVIDE SUPPORTING DOCUMENTATION. ISO 2020

ISO/DIS 21809-2:2020(E)
© ISO 2020
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ii © ISO 2020 – All rights reserved

ISO/DIS 21809-2:2020(E)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols and abbreviated terms . 5
4.1 Symbols . 5
4.2 Abbreviated terms . 6
5 General requirements . 6
5.1 Rounding . 6
5.2 Conformity to requirements . . 6
6 Information supplied by the purchaser . 7
6.1 General information . 7
6.2 Additional information . 7
7 Coating materials . 8
7.1 Epoxy powder . 8
7.1.1 General. 8
7.1.2 Properties . 8
7.1.3 Packaging. 9
7.2 Repair materials . 9
8 Coating qualification . 9
8.1 Qualification by manufacturer. 9
8.1.1 Epoxy powder. 9
8.1.2 Repair material .10
8.2 Qualification by applicator .11
8.2.1 General.11
8.2.2 Minimum requirements for plant qualification and production .11
8.2.3 Application procedure specification (APS) .13
9 Application of coating .14
9.1 General .14
9.2 Surface preparation .14
9.2.1 Initial evaluation and surface preparation .14
9.2.2 Abrasive blast cleaning .15
9.2.3 Surface dust contamination .15
9.2.4 Surface cleanliness and pretreatment .15
9.3 Coating application and curing temperature .15
9.3.1 General.15
9.3.2 Powder recycle .16
9.4 Coating thickness .16
9.5 Cutback .16
10 Inspection and testing .16
10.1 General .16
10.2 Testing of incoming epoxy powder.17
10.3 In-process and finished product testing requirements .17
10.3.1 General.17
10.3.2 Holiday inspection .17
10.3.3 Production test rings .18
10.4 Test results.19
11 Repair of coated pipe .19
11.1 General .19
ISO/DIS 21809-2:2020(E)
11.2 Repair of holidays .19
11.2.1 Pinholes and Small holiday .19
11.2.2 Large Defects .19
11.2.3 Holiday Detection of the Repaired Area: .19
11.3 Stripping and recoating .19
12 Markings .19
12.1 General .19
12.2 Required markings .20
13 Handling and storage in the coating area .20
13.1 Handling.20
13.2 Storage .20
14 Test reports and inspection documents .20
Annex A (normative) Test methods .21
Annex B (normative) Procedure qualification trial (PQT), inspection and testing plan (ITP)
and daily log .51
Bibliography .54
iv © ISO 2020 – All rights reserved

ISO/DIS 21809-2:2020(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 ISO/TC 67, Materials, equipment and offshore structures for petroleum,
petrochemical and natural gas industries, Subcommittee SC 2, Pipeline transportation systems.
This second edition cancels and replaces the first edition (ISO 21809-2:2007), which has been
technically revised. It also includes the Technical corrigendum ISO 21809-2:2007/Cor.1:2008.
The main changes compared to the previous edition are as follows:
Inclusion of new classifications for materials with glass transitions greater than 115°C.
A list of all the parts in the ISO 21809 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.
ISO/DIS 21809-2:2020(E)
Introduction
Users of this document should be aware that further or differing requirements might be needed for
individual applications. This document is not intended to inhibit a vendor from offering, or the purchaser
from accepting, alternative equipment or engineering solutions for the individual application. This can
be particularly applicable if there is innovative or developing technology. If an alternative is offered, the
vendor should identify any variations from this document and provide details.
vi © ISO 2020 – All rights reserved

DRAFT INTERNATIONAL STANDARD ISO/DIS 21809-2:2020(E)
Petroleum and natural gas industries — External coatings
for buried or submerged pipelines used in pipeline
transportation systems —
Part 2:
Single layer fusion-bonded epoxy coatings
1 Scope
This document specifies the requirements for qualification, application, testing and handling of
materials for plant application of single layer fusion-bonded epoxy (FBE) coatings applied externally for
the corrosion protection of bare steel pipe for use in pipeline transportation systems for the petroleum
and natural gas industries as defined in ISO 13623.
NOTE Pipes coated in accordance with this document are considered suitable for additional protection by
means of cathodic protection.
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 2815, Paints and varnishes — Buchholz indentation test
ISO 8130-2, Coating powders — Part 2: Determination of density by gas comparison pyknometer
(referee method)
ISO 8130-3, Coating powders — Part 3: Determination of density by liquid displacement pyknometer
ISO 8501-1:2007, 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 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 8502-6, Preparation of steel substrates before application of paints and related products — Tests
for the assessment of surface cleanliness — Part 6: Extraction of water soluble contaminants for analysis
(Bresle method)
ISO 8502-9, Preparation of steel substrates before application of paints and related products — Tests for
the assessment of surface cleanliness — Part 9: Field method for the conductometric determination of
water-soluble salts
ISO 8503-4, Preparation of steel substrates before application of paints and related products — Surface
roughness characteristics of blast-cleaned steel substrates — Part 4: Method for the calibration of ISO
surface profile comparators and for the determination of surface profile — Stylus instrument procedure
ISO 8503-5, Preparation of steel substrates before application of paints and related products — Surface
roughness characteristics of blast-cleaned steel substrates — Part 5: Replica tape method for the
determination of the surface profile
ISO/DIS 21809-2:2020(E)
ISO 10474:2013, Steel and steel products — Inspection documents
ISO 11124 (all parts), Preparation of steel substrates before application of paints and related products —
Specifications for metallic blast-cleaning abrasives
ISO 11126 (all parts), Preparation of steel substrates before application of paints and related products —
Specifications for non-metallic blast-cleaning abrasives
ISO 11127-6, Preparation of steel substrates before application of paints and related products — Test
methods for non-metallic blast-cleaning abrasives — Part 6: Determination of water-soluble contaminants
by conductivity measurement
ISO 11357-1, Plastics — Differential scanning calorimetry (DSC) — Part 1: General principles
ISO 11357-2:2020, Plastics — Differential scanning calorimetry (DSC) — Part 2: Determination of glass
transition temperature and step height
ISO 13623:2017, Petroleum and natural gas industries — Pipeline transportation systems
ISO 80000-1:2009, Quantities and units — Part 1: General
1)
EN 10204:2004, Metallic products — Types of inspection documents
2)
AS 3894.6, Site testing of protective coatings — Determination of residual contaminants
3)
ASTM D4060, Standard Test Method for Abrasion Resistance of Organic Coatings by the Taber Abraser
ASTM D4940, Standard Test Method for Conductimetric Analysis of Water Soluble Ionic Contamination of
Blasting Abrasives
4)
SSPC-AB 1, Mineral and Slag Abrasives
SSPC-AB 2, Cleanliness of Recycled Ferrous Metallic Abrasives
SSPC-AB 3, Ferrous Metallic Abrasive
SSPC-SP 1, Solvent cleaning
SSPC-Guide 15, Field Methods for Extraction and Analysis of Soluble Salts on Steel and Other Nonporous
Substrates
3 Terms and definitions
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
For the purposes of this document, the following terms and definitions apply
3.1
application procedure specification
APS
document describing procedures, methods, equipment and tools used for coating application
1) European Committee for Standardization, Management Centre, Avenue Marnix 17, B-1000, Brussels, Belgium.
2) Standards Australia, GPO Box 476, Sydney, NSW 2001, Australia.
3) American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, USA.
4) SSPC: The Society for Protective Coatings, 40 24th Street, 6th Floor, Pittsburg. PA 15222-4656, USA.
2 © ISO 2020 – All rights reserved

ISO/DIS 21809-2:2020(E)
3.2
applicator
company that undertakes the coating application in accordance with this part of ISO 21809
3.3
adhesion
bond between coating and substrate
3.4
batch
quantity of epoxy powder produced in a continuous manufacturing operation using raw materials of
the same source and grade
3.5
batch certificate
certificate of analysis issued by the manufacturer
3.6
certificate of compliance
document issued in accordance with ISO 10474 or EN 10204, stating compliance with the purchase
order for coated pipes, but without mention of any test results, issued in accordance with the purchasing
requirements
3.7
coating material qualification
qualification of the coating materials properties carried out by the manufacturer before the coating
system qualification
3.8
coating system qualification
qualification of application method, applied coating system and subsequent inspection/testing of its
properties, to confirm that the APS is adequate to produce a coating with the specified properties
Note 1 to entry: The coating system qualification is not project dependent.
3.9
cutback
length of pipe left uncoated at each end for joining purposes
3.10
design temperature range
temperature range, including maximum and minimum temperatures, likely to be reached during
transport, storage, handling, installation and operation
Note 1 to entry: The design temperature range of the coating can be narrower than that specified for the steel
pipe material and/or the pipeline system.
3.11
dummy pipe
pipe having the same outside diameter and wall thickness of the project pipes coated in accordance
with approved APS
3.12
end user
company (companies) that own(s) and/or operate(s) pipeline(s)
3.13
glass transition
reversible change in an amorphous polymer or in amorphous regions of a partially crystalline polymer
from (or to) a viscous or rubbery condition to (or from) a hard and relatively brittle one
ISO/DIS 21809-2:2020(E)
3.14
glass transition temperature
T
g
characteristic value of the temperature range over which the glass transition takes place
Note 1 to entry: Note to entry: The assigned glass transition temperature, T , can vary, depending on the specific
g
property and on the method and conditions selected to measure it.
[SOURCE: ISO 11357-2:2020, 3.1]
3.15
holiday
coating discontinuity that exhibits electrical conductivity when exposed to a specific voltage
3.16
inspection certificate
document in accordance with ISO 10474 or EN 10204 declaring that the product supplied complies with
the requirements of the order and in which test results are supplied from specific inspection
3.17
inspection and testing plan
ITP
document providing an overview of the sequence of inspections and tests, including appropriate
resources and procedures
3.18
laboratory-coated test specimen
specimen taken from a laboratory-prepared panel
3.19
manufacturer
company responsible for the manufacture of coating material(s)
3.20
manufacturer’s specification
document that specifies the characteristics, test requirements and application recommendations for
the coating materials
3.21
operating temperature
temperature that can be endured by a pipeline (component) and/or pipeline system during operation,
within the design temperature range
3.22
powder shipment
amount of powder transported in one container
3.23
pipe diameter length
length along the pipe axis equal to the specified outside diameter of the pipe
3.24
pipeline
components of a pipeline system connected together to convey fluids between stations and/or plants,
including pipe, pig traps, components, appurtenances, isolating valves, and sectionalizing valves
[SOURCE: ISO 13623:2017, 3.1.15, modified]
4 © ISO 2020 – All rights reserved

ISO/DIS 21809-2:2020(E)
3.25
pipeline system
pipelines, stations, supervisory control and data acquisition system (SCADA), safety systems, corrosion
protection systems, and any other equipment, facility or building used in the transportation of fluids
[SOURCE: ISO 13623:2017, 3.1.16]
3.26
pre-production trial
PPT
application of a coating and subsequent inspection/testing of its properties, to confirm that the APS is
adequate to produce a coating with the specified properties, carried out in the coating plant immediately
prior to start of production and to verify that the plant's equipment is adequate to consistently adhere
to the APS requirements
3.27
procedure qualification trial
PQT
application of a coating and subsequent inspection/testing of its properties, to confirm that the APS
is adequate to produce a coating with the specified properties, carried out prior in correlation to a
specific project
3.28
purchaser
company responsible for providing the purchase order requirements
3.29
start up
coating application activities re-start in case of modification of production parameters or unplanned
stoppage or production interruption exceeding 12 h
3.30
test report
document that provides the quantitative test results for tests conducted in accordance with the
requirements of this part of ISO 21809
3.31
test ring
sample taken from production-coated pipe
4 Symbols and abbreviated terms
4.1 Symbols
C percentage conversion of FBE coating, expressed as a percentage
t effective sample thickness, expressed in millimetres
ΔH exothermic heat of reaction, expressed in joule per grams
M mass, expressed in grams
R mandrel radius, expressed in millimetres
T glass transition temperature, expressed in degrees Celsius
g
ISO/DIS 21809-2:2020(E)
ΔT variation of the glass transition temperature, expressed in degrees Celsius
g
w mass fraction of the epoxy power retained on a sieve, expressed as a percentage of
ep
total sample
w mass fraction of moisture, expressed as a percentage
m
4.2 Abbreviated terms
APS application procedure specification
DC direct current
DSC differential scanning calorimetry
FBE fusion-bonded epoxy
HRC Rockwell C scale hardness
ID inner diameter
ITP inspection and testing plan
NPS nominal pipe size
OD outer diameter
ppd per pipe diameter
PPT pre-production trial
PQT procedure qualification trial
5 General requirements
5.1 Rounding
Unless otherwise stated in this document, to determine conformance with the specified requirements,
observed or calculated values shall be rounded to the nearest unit in the last right-hand place of figures
used in expressing the limiting value, in accordance with ISO 80000-1:2009, Annex B, Rule A.
NOTE For the purposes of this provision, the rounding method of ASTM E29 is equivalent to ISO 80000-1:2009,
Annex B, Rule A.
5.2 Conformity to requirements
Systems for quality and environmental management, and the competence of testing and calibration
laboratories, should be applied to assist conformity with the requirements of this document.
1. ISO 29001 gives sector-specific guidance on quality management systems.
2. ISO 14001 gives requirements with guidance for the use of an environmental management system.
3. ISO/IEC 17025 gives general requirements for the competence of testing and calibration
laboratories.
The applicator shall be responsible for complying with all the applicable requirements for the
application of this document. The purchaser shall be allowed to make any investigation necessary to
ensure conformity by the applicator and to reject any material and/or coating that does not comply.
6 © ISO 2020 – All rights reserved

ISO/DIS 21809-2:2020(E)
6 Information supplied by the purchaser
6.1 General information
The purchase order shall include the following information:
a) number of this document and year of publication, (ISO 21809-2:XXXX);
b) pipe quantity, outside diameter, minimum wall thickness, minimum, maximum and nominal length,
grade of steel;
c) bare pipe standard or specification designation, e.g. ISO 3183;
d) minimum thickness and maximum permissible thickness of the FBE coating and FBE coating
classes;
e) cutback and tolerances for both ends of pipe;
f) minimum and maximum pipeline design temperatures (°C);
g) operating temperature(°C);
h) type of certificate of compliance;
i) pipe line installation methods
6.2 Additional information
The purchase order shall specify which of the following provisions apply for the specific item ordered:
a) plant and process inspection by the purchaser;
b) increased test ring length;
c) test ring location;
d) test frequency for additional test rings;
e) additional markings;
f) handling procedures;
g) storage procedures;
h) waiver of test reports;
i) maximum allowable preheating temperature;
j) applicator qualification requirements;
k) other special requirements;
l) pipe tracking and traceability of pipes to coating materials;
m) permissible number coating repairs if different from 11;
n) documentation and schedule for supply of documents;
o) purchaser approval of APS;
p) inspection and testing plan and/or daily log;
q) inspection of incoming pipe;
ISO/DIS 21809-2:2020(E)
r) pipe end protection;
s) surface pretreatments if any;
t) PQT requirements (see 8.1);
u) protection against adverse weather conditions during storage.
v) use of dummy pipe for destructive tests;
7 Coating materials
7.1 Epoxy powder
7.1.1 General
The applicator shall use epoxy powder that is
a) certified by the manufacturer to be in accordance with the requirements of 7.1.2 and 8.1, and
compatible with the requirements of 9.2, 9.3 and 9.4,
b) identified by the manufacturer on each package with the following:
— manufacturer’s name;
— product number/description;
— product temperature range (maximum and minimum);
— mass of material;
— batch number/manufacturing identification number;
— location of manufacture;
— temperature requirements for transportation and storage;
— year, month and day of manufacture;
— expiry date, and
c) handled, transported, and stored in accordance with the manufacturer's recommendations.
7.1.2 Properties
As a minimum, each batch of epoxy powder shall be tested by the manufacturer in accordance with the
requirements of Table 1. Test results shall be reported in accordance with ISO 10474 or EN 10204 and a
batch certificate with the test results shall be provided by the manufacturer to the applicator.
Table 1 — Minimum requirements for epoxy powder
Property Unit Test method Requirements
Cure time s A.2 Within the manufacturer’s specification
Gel time s A.3 Within the manufacturer’s specification
Total volatile / moisture % A.5 ≤ 0,3 %
content mass fraction
Particle size % A.6 Maximum retained on 150 µm and 250 µm
sieves within the manufacturer’s specification
Density g/cm A.7 Within the manufacturer’s specification
8 © ISO 2020 – All rights reserved

ISO/DIS 21809-2:2020(E)
Table 1 (continued)
Property Unit Test method Requirements
Thermal characteristics T (°C) A.8 Within the manufacturer’s specification
g1
T (°C)
g2
ΔH (J/g)
7.1.3 Packaging
The powder shall be contained in packaging that is labelled to identify the items specified in 7.1.1 b).
7.2 Repair materials
The applicator shall use repair materials that are certified by the powder manufacturer to be compatible
with the epoxy powder.
Repair material batches shall be identified by the product manufacturer with the following:
— manufacturer’s name;
— product number/description;
— product temperature range (maximum and minimum);
— mass of material;
— batch number/manufacturing identification number;
— location of manufacture;
— temperature requirements for transportation and storage;
— year, month and day of manufacture;
— expiry date.
Repair materials shall be handled, transported, and stored in accordance with the material
manufacturer’s recommendations.
8 Coating qualification
8.1 Qualification by manufacturer
8.1.1 Epoxy powder
8.1.1.1 General
The manufacturer shall qualify the epoxy powder in accordance with this part of ISO 21809.The epoxy
powder shall be classified into two categories, Class 1 and Class 2. Class 1 having cured epoxy T ≤115°C
g2
while Class 2 having cured epoxy T >115°C. The qualification shall be repeated in case of changes in
g2
the material composition or changes in the material manufacturing location. The test report issued by
the manufacturer may be also certified by a certification organization.
The manufacturer shall carry out the tests in accordance with the requirements of 8.1.1 and meet the
acceptance criteria in Table 2. Laboratory test specimens shall be prepared in accordance with 8.1.1.2.
These test results shall be reported in accordance with ISO 10474, inspection certificate 3.1 or EN10204,
inspection certificate 3.1 and shall be available to the applicator upon request. Test reports shall have a
three-year validity.
ISO/DIS 21809-2:2020(E)
Table 2 — Requirements for coating material qualification
Acceptance criteria
Number of test Test
Properties
Class 1 Class 2
specimens method
(T ≤115°C) (T >115°C)
g2 g2
Thermal characteristics Meets the Meets the 1 A.8
manufacturer’s manufacturer’s
specification specification
Cathodic disbondment: ≤5 mm ≤5 mm 3 A.9
disbondment disbondment
24 h, 65 °C ± 3 °C
24 h hot-water adhesion Rating of 1 to 2 N/A 3 A.16
75 °C ± 3 °C
28 d hot-water adhesion Rating of 1 to 3 N/A 3 A.16
75 °C ± 3 °C
24 h hot-water adhesion N/A Rating of 1 to 2 3 A.16
95 °C ± 3 °C
28 d hot-water adhesion N/A Rating of 1 to 3 3 A.16
95 °C ± 3 °C
Cathodic disbondment: ≤6 mm ≤6 mm 3 A.9
disbondment disbondment
28 d, 20 °C ± 3 °C
Cathodic disbondment: ≤15 mm N/A 3 A.9
disbondment
28 d, 65 °C ± 3 °C
Cathodic disbondment: N/A ≤15 mm 3 A.9
disbondment
28 d, 95 °C ± 3 °C
Cathodic disbondment: ≤15 mm disbond- ≤15 mm disbond- 3 A.9
ment ment
28 d, at manufacturer’s maximum
operating temperature ± 3 °C
Cross-section porosity Rating of 1 to 3 Rating of 1 to 3 1 A.12
Interface porosity Rating of 1 to 3 Rating of 1 to 3 1 A.12
Flexibility at manufacturer’s mini- No cracking No cracking 5 A.13
mum flexibility test temperature at 3,0° ppd at 2,0° ppd
Impact at -30°C ≥1,5 J ≥1,5 J 3 A.14
8.1.1.2 Preparation of the laboratory coated test specimens
Test specimens shall be mild steel and shall have dimensions in accordance with the applicable test
method (see Annex A). The substrate shall be abrasively blast cleaned with steel grit, in accordance with
ISO 11124-3, to provide a cleanliness in accordance with the requirements of ISO 8501-1:2007, grade Sa
2 1/2. The substrate may be solvent cleaned as per SSPC SP-1. No additional substrate pretreatments
can be used.
The surface shall have a peak-to-trough height of between 50 µm and 100 µm as measured in accordance
with ISO 8503-4 (Stylus method), or ISO 8503-5 (Replica tape method).
Coating shall be applied in accordance with the product (data sheet) application guidelines or epoxy
powder manufacturer’s recommendations.
The thickness of the coating on the completed test specimen shall be 350 µm to 500 µm. This should be
measured by a calibrated coating thickness gauge verified to ± 5 % of full-scale range.
8.1.2 Repair material
Qualification requirements for the repair material shall be agreed between repair material
manufacturer and purchaser.
10 © ISO 2020 – All rights reserved

ISO/DIS 21809-2:2020(E)
8.2 Qualification by applicator
8.2.1 General
The production coating shall be qualified by the applicator for each coating line, unless purchaser waives
this requirement as indicated in 6.2. Applicator shall use coating materials qualified in accordance
with the requirements of 8.1 and prepare coated samples in accordance with a documented APS. The
test report issued by the applicator may be also certified by a certification organization. If agreed, test
certificates not older than three years are considered acceptable to cover requested tests for coatings
system qualification.
Qualification shall be achieved by successful evaluation of pipe coated samples using the specified
coating line and the coating qualification test results shall be reported in accordance with the
requirements of this document. The minimum requirements for plant qualification and production are
given in 8.2.2.
The qualification shall be carried out in accordance with APS (see 8.2.3) and repeated in case of
essential modifications of the coating line, coating materials and coating procedures. For applicators,
PPT shall be mandatory while PQT shall be specified by the purchaser
8.2.2 Minimum requirements for plant qualification and production
The requirements for testing pipe surface preparation are given in Table 3. Requirements of plant
applied coating (quality tests) are given in Table 4.
Table 3 — Requirements for inspection of surface preparation-production and plant
qualification
Frequency Frequency
Properties Unit Test method Requirements
qualification production
Incoming FBE - 10.2 10.2 each batch each shipment
powder
Surface condition - visual inspection 9.2.1 paragraph 2 each pipe each pipe
before blasting
Environmental - calculation as determined once every 4 h
conditions at time of
measurement
Pipe temperature °C thermocouple minimum 3 °C once every 4 h
before blasting above the dew
point
Size, shape and - visual and conformity to once 1/day
properties of certification certificate,
abrasive ISO 11124 (all parts) compliance to
(metallic) manufacturing/
ISO 11126 (all parts) working
(non-metallic) procedures
Water soluble µS/cm ASTM D4940 conductivity once 1/shift
contamination max. 150
of abrasives
Soluble salt after mg/m ISO 8502-6 or salt content each pipe 1/shift
blasting ISO 8502-9 or (as NaCl)
SSPC Guide 15 max. 20
Surface roughness µm ISO 8503-4 50 to 100 5 pipes every 1 h
of blasted surface or
(R R ) ISO 8503-5
z/ y5
Visual inspection - ISO 8501-1 grade Sa 2 1/2 each pipe each pipe
of blasted surface
ISO/DIS 21809-2:2020(E)
Table 3 (continued)
Frequency Frequency
Properties Unit Test method Requirements
qualification production
Presence of dust - ISO 8502-3 Max. quantity 5 pipes every 1 h
after dust removal rating 2
Max. dust size
class 2
Visual inspection - visual no rust each pipe ea
...