SIST EN ISO 12944-8:2018

SLOVENSKI STANDARD
oSIST prEN ISO 12944-8:2016
01-julij-2016
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Paints and varnishes - Corrosion protection of steel structures by protective paint
systems - Part 8: Development of specifications for new work and maintenance (ISO/DIS
12944-8:2016)
Beschichtungsstoffe - Korrosionsschutz von Stahlbauten durch Beschichtungssysteme -
Teil 8: Erarbeiten von Spezifikationen für Erstschutz und Instandsetzung (ISO/DIS 12944
-8:2016)
Peintures et vernis - Anticorrosion des structures en acier par systèmes de revêtement -
Partie 8: Développement de spécifications pour les travaux neufs et l'entretien (ISO/DIS
12944-8:2016)
Ta slovenski standard je istoveten z: prEN ISO 12944-8
ICS:
25.220.20 Površinska obdelava Surface treatment
87.020 Postopki za nanašanje Paint coating processes
barvnih premazov
91.080.13 Jeklene konstrukcije Steel structures
oSIST prEN ISO 12944-8:2016 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 12944-8:2016

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oSIST prEN ISO 12944-8:2016
DRAFT INTERNATIONAL STANDARD
ISO/DIS 12944-8
ISO/TC 35/SC 14 Secretariat: DIN
Voting begins on: Voting terminates on:
2016-05-19 2016-08-18
Paints and varnishes — Corrosion protection of steel
structures by protective paint systems —
Part 8:
Development of specifications for new work and
maintenance
Peintures et vernis — Anticorrosion des structures en acier par systèmes de revêtement —
Partie 8: Développement de spécifications pour les travaux neufs et l’entretien
ICS: 87.020
ISO/CEN PARALLEL PROCESSING
This draft has been developed within the International Organization for
Standardization (ISO), and processed under the ISO lead mode of collaboration
as defined in the Vienna Agreement.
This draft is hereby submitted to the ISO member bodies and to the CEN member
bodies for a parallel five month enquiry.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
To expedite distribution, this document is circulated as received from the
IN ADDITION TO THEIR EVALUATION AS
committee secretariat. ISO Central Secretariat work of editing and text
BEING ACCEPTABLE FOR INDUSTRIAL,
composition will be undertaken at publication stage.
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 12944-8:2016(E)
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. ISO 2016

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oSIST prEN ISO 12944-8:2016
ISO/DIS 12944-8:2016(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2016, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
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ii © ISO 2016 – All rights reserved

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oSIST prEN ISO 12944-8:2016
ISO/DIS 12944-8:2016(E)
Contents Page
Foreword .iv
1 Scope.1
2 Normative references .1
3 Terms and definitions.2
4 How to develop a specification for new work or maintenance .3
5 Contents of a specification .4
5.1 Supply.4
Annex A (informative) Basic information for inclusion in a protective paint system specification

for new work and maintenance . 12
Annex B (informative) Reference areas . 14
Annex C (informative) Flow chart for planning new work. 17
Annex D (informative) Flow chart for planning maintenance work. 18
Annex E (informative) Classification of environments – Checklist (derived from ISO 12944-2) . 19
Annex F (informative) Recommended form for a protective paint system specification - New
work (To be filled in for each constituent element of the structure). 20
Annex G (informative) Recommended form for a protective paint system specification –

Maintenance (To be filled in for each constituent element of the structure) . 21
Annex H (informative) Recommended form for a report on paint work progress and application
conditions . 23
Annex I (informative) Recommended form for final report on corrosion protection work . 24
Annex J (informative) Recommended form for a detailed inspection report on the condition of
an existing protective paint system, including the assessment of the need for
maintenance . 27
Bibliography . 32

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oSIST prEN ISO 12944-8:2016
ISO/DIS 12944-8:2016(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 12944-8 was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 14,
Protective paint systems for steel structures.
This second edition cancels and replaces the first edition (ISO12944-8:1998), which has been technically
revised.
ISO 12944 consists of the following parts, under the general title Paints and varnishes — Corrosion protection
of steel structures by protective coating systems:
 Part 1: General introduction
 Part 2: Classification of environments
 Part 3: Design considerations
 Part 4: Types of surface and surface preparation
 Part 5: Protective paint systems
 Part 6: Laboratory performance test methods
 Part 7: Execution and supervision of paint work
 Part 8: Development of specifications for new work and maintenance
 Part 9: Protective paint systems and laboratory performance test methods for offshore and related
structures
Annexes A to K of this part of ISO 12944 are for information only.
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oSIST prEN ISO 12944-8:2016
ISO/DIS 12944-8:2016(E)
Introduction
Unprotected steel in the atmosphere, in water and in soil is subjected to corrosion that may lead to damage.
Therefore, to avoid corrosion damage, steel structures are normally protected to withstand the corrosion
stresses during the service life required of the structure.
There are different ways of protecting steel structures from corrosion. ISO 12944 deals with protection by
paint systems and covers, in the various parts, all features that are important in achieving adequate corrosion
protection. Additional or other measures are possible but require particular agreement between the interested
parties.
In order to ensure effective corrosion protection of steel structures, it is necessary for owners of such
structures, planners, consultants, companies carrying out corrosion protection work, inspectors of protective
coatings and manufacturers of coating materials to have at their disposal state-of-the-art information in
concise form on corrosion protection by paint systems. Such information has to be as complete as possible,
unambiguous and easily understandable to avoid difficulties and misunderstandings between the parties
concerned with the practical implementation of protection work.
This International Standard – ISO 12944 – is intended to give this information in the form of a series of
instructions. It is written for those who have some technical knowledge. It is also assumed that the user of ISO
12944 is familiar with other relevant International Standards, in particular those dealing with surface
preparation, as well as relevant national regulations.
Although ISO 12944 does not deal with financial and contractual questions, attention is drawn to the fact that,
because of the considerable implications of inadequate corrosion protection, non-compliance with
requirements and recommendations given in this standard may result in serious financial consequences.
ISO 12944-1 defines the overall scope of all parts of ISO 12944. It gives some basic terms and definitions and
a general introduction to the other parts of ISO 12944. Furthermore, it includes a general statement on health,
safety and environmental protection, and guidelines for using ISO 12944 for a given project.
This part of ISO 12944 is intended as an aid when a corrosion protection specification is to be drawn up.
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oSIST prEN ISO 12944-8:2016
DRAFT INTERNATIONAL STANDARD ISO/DIS 12944-8:2016(E)

Paints and varnishes — Corrosion protection of steel structures
by protective coating systems — Part 8: Development of
specifications for new work and maintenance
1 Scope
This part of ISO 12944 deals with the development of specifications for corrosion protection of steel
structures, using protective paint systems. It relates to new work and maintenance in the workshop or on site
and is also applicable to the corrosion protection of individual components. This part of ISO 12944 concerns
the corrosion protection of steel structures exposed to different corrosion stresses by environments such as
indoors, open-air and immersion in water or burial in soil, as well as special stresses, for example due to
medium or high temperatures. The need for different durability ranges is considered.
Steel surfaces that have been hot-dip-galvanized, metal-sprayed, zinc-electroplated or sherardized, and
previously painted steel surfaces, are also covered by this part of ISO 12944.
In annex B, reference areas for assessing the quality of the corrosion protection work and the performance of
the protective paint systems used are dealt with. Annexes C and D provide detailed flow charts for planning
new work and maintenance, which should be taken into account when writing a specification.
If extreme corrosion stresses or high temperatures occur, or the protective paint systems are to be used on
other substrates such as non-ferrous metals or concrete, the specifications will have to take this into account.
This part of ISO 12944 may also be used as a guide in such cases.
2 Normative references
The following documents, in whole or in part, are 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 12944-1, Paints and varnishes — Corrosion protection of steel structures by protective coating systems
— Part 1: General introduction
ISO 12944-6, Paints and varnishes — Corrosion protection of steel structures by protective coating systems
— Part 6: Laboratory performance test methods
ISO 12944-9, Paints and varnishes — Corrosion protection of steel structures by protective coating systems
— Part 9: Protective paint systems and laboratory performance test methods for offshore and related
structures
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
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oSIST prEN ISO 12944-8:2016
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3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 12944-1 and the following apply.
3.1
constituent element
part of a structurethat is exposed to a particular environment and which will therefore require a specific
protective paint system specification
Note 1 to entry: For example, a storage tank w ill have more than one constituent element, as it comprises internal and
external surfaces, and possibly also support steelw ork.
3.2
dry film thickness (DFT)
thickness of a coating remaining on the surface when the coating has hardened
Note 1 to entry: For details, see ISO 12944-5:1998, 5.4.
3.3
durability
expected life of a protective paint system to the first major maintenance painting
Note 1 to entry: For further important information on durability and durability ranges, see ISO 12944-1.
3.4
inspector
anyone responsible for ensuring conformity with one or more of the individual specifications
3.5
maintenance
sum of all measures, as covered by ISO 12944, which ensure that the function of the protection of the steel
structure against corrosion is maintained
Note 1 to entry: Maintenance includes but is not limited to paint w ork. Such paint w ork can be patch painting (repair of
degradated spots/areas of the coating system), patch painting follow ed by overpainting of the structure, or total repainting.
3.6
nominal dry film thickness (NDFT)
dry film thickness specified for each coat or for the whole paint system to achieve the required durability
Note 1 to entry: For details see ISO 12944-5:1998, 5.4.
3.7
project
whole of the work for which the specification is being developed and which can include one or more
structures.

3.8
specification
technical document describing all the requirements that are to be observed when a steel structure is to be
protected against corrosion by using protective coating systems and which consists of several individual
specifications
Note 1 to entry: Individual specifications, i.e. project specification, protective coating system specification, coating
w ork specification, inspection and assessment specification are defined in 3.8.1 to 3.8.4.
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oSIST prEN ISO 12944-8:2016
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3.8.1
project specification
specification that describes the project and the requirements relating specifically to it
3.8.2
protective paint system specification:
specification that describes the preparation of the surface of the structure and the protective coating system(s)
for the structure, in conformity with the project specification
3.8.3
paint work specification:
specification that describes the way the coating work is to be carried out, in conformity with the project
specification and the protective coating system specification, as well as with the inspection and assessment
specification
3.8.4
inspection and assessment specification
specification that describes how inspection and assessment are to be carried out
3.9
specifier
anyone responsible for the development of a specification
3.10
sample area
area on which the properties of a newly applied coating are tested
4 How to develop a specification for new work or maintenance
It is recommended that the specifier considers the information given in clause 5, and establishes which
specification(s) apply/applies to the project or constituent element to be protected. Then, the specifier should
check in the respective table, item by item, which of the items listed are to be taken into account in the
specification. The various items are supported by detailed information given in the "Remarks" column in tables
1 to 4, and in the annexes.
When writing a specification for new work or maintenance, it is important to choose the most suitable
protective paint system. Prior to refurbishment it can be helpful to create sample areas, e.g. to asses the
coating suitability and appearance. To achieve this all relevant parameters shall be taken into consideration,
for example:
 required durability;
 environmental conditions and special stresses;
 surface preparation;
 different generic types of paint;
 number and types of coats [priming coat(s), intermediate coat(s) and top coat(s)];
 methods of application and application requirements;
 place of application (shop or site);
 scaffolding requirements;
 requirements regarding (future) maintenance (if any);
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oSIST prEN ISO 12944-8:2016
ISO/DIS 12944-8:2016(E)
 health and safety requirements;
 environmental protection requirements.
These parameters are described in detail in ISO 12944-1 to ISO 12944-7 and ISO 12944-9. In this part of ISO
12944, only such information is given which is considered to be particularly important to the specifier.
In the drafting of a specification for maintenance work on a structure or constituent element, a decision has to
be taken between
 repair,
 partial renewal, and
 complete renewal.
When complete renewal has been decided, the specification should preferably be developed in accordance
with a specification for new work, e.g. using the form given in annex G.
In Annex D is shown how to define the work for different types of maintenance work. The exact definition
which kind of work is necessary shall be decided in dependence of the structure. Test areas can be useful to
find a sufficient solution.
At an early stage in the drafting of a project specification, a final decision will have to be taken by the specifier
on essential planning parameters, such as protection of slip-resistant connections using high-tensile bolts, the
inside surfaces of hollow sections and other hidden steel surfaces (see ISO 12944-3 for details of design).
Exclusions, i.e. items not to be painted, shall be indicated in the specification(s).
The choice of protective paint systems shall be based on practical experience and/or the results of laboratory
performance tests, particularly when new coating technology is involved. The protective paint systems shall be
tested for compatibility with existing coatings on previously coated surfaces.
The specifier shall further take into account regulations and/or requirements relating to environmental
protection, health and safety, and working conditions in the shop or on site.
Because national requirements concerning health and safety at work, pollution control etc. vary significantly, it
may not be possible to include detailed information covering such requirements in a specification. However,
the specification shall draw attention to the need to comply with current local, regional, national and
international legislation and regulations.
5 Contents of a specification
5.1 Supply
The items which are preferably to be covered by a specification are listed in tables 1 to 4, under the following
headings:
 contents of a project specification (Table 1);
 contents of a protective paint system specification (Table 2);
 contents of a paint work specification (Table 3);
 contents of an inspection and assessment specification (Table 4).
NOTE 1 For small structures, or those w hose protection is not subject to any particular requirements, only certain items
need to be taken into account.
An example of a specification based on Table 1 is given as Annex F.
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oSIST prEN ISO 12944-8:2016
ISO/DIS 12944-8:2016(E)
NOTE 2 Each table contains sufficient information to enable the specifier to write a specification for any one of the
subjects listed above without having to make frequent references to the other tables. This has led to some expressions
being repeated in each of the tables, for example under 1.1, 2.1, 3.1 and 4.1 the items "name of project", "name of ow ner"
and "name of specifier" are repeated. In practice, such information should only be given once in the complete
specification.
Table 1 — Contents of a project specification
a
No. MAIN ITEM/Sub-item Remarks
1.1 GENERAL INFORMATION
1.1.1 Name of project
1.1.2 Name of customer
1.1.3 Loacation(s) of structure(s)
1.1.4 Name of specifier State organization and person.
See annex E and ISO 12944-2.
Environmental conditions at location(s) of
1.1.5
structure(s)
1.1.6 References to standards and regulations
1.2 TYPE OF PROJECT
For definitions of project, structure and constituent
element, see clause 3.
1.2.1 New construction w ithout protection
1.2.2 New construction blast-cleaned and coated
1.2.3 Touch-up and final paint work
1.2.4 Maintenance See annexes H, I, J and K.
1.2.5 New construction and maintenance combined
1.2.6 Items not to be coated
1.3 DESCRIPTION OF EACH CONSTITUENT Each structure should preferably be divided into
ELEMENT constituent elements on the basis of the protective
paint system(s) to be used and the corrosion
stresses associated w ith each constituent element.
1.3.1 Substrate(s) Metallic coatings, e.g. zinc, are part of the coating
system.
1.3.2 Existing paint system and its condition See annex K and ISO 12944-5.
2
1.3.3 Areas (m )
1.4 DESCRIPTION OF ENVIRONMENT OF EACH Descriptions are given in ISO 12944-2. See also
CONSTITUENT ELEMENT annex E.
1.4.1 Atmospheric environmental conditions See annex E, E.1.1.
1.4.2 Special situations See annex E, E. 4.1.
1.4.3 Special stresses See annex E, E.4.2 (including the effects of
exposure to strong UV radiation).
1.5 DURABILITY
1.5.1 Durability range See ISO 12944-1.
1.6 PROTECTIVE PAINT SYSTEMS - PARTICULAR Details of types of surface, surface preparation
CONSTRAINTS WITH RESPECT TO SURFACES grades, surface profiles and surface preparation
AND SURFACE PREPARATION methods can be found in ISO 12944-4. In the
specification, the required surface preparation grade
shall be given for each individual protective paint
system to be used.
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oSIST prEN ISO 12944-8:2016
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Table 1 — Continued
a
No. MAIN ITEM/Sub-item Remarks
1.6.1
Types of surface and surface preparation grade(s) Besides the surface preparation grade, the
for new w ork and maintenance specification shall give details of the surface
preparation work required. See also annexes G and
H and table 3.
1.6.2 Surface preparation method(s) See ISO 12944-4
1.6.3 Water-soluble contaminants See ISO 8502-6 and ISO 8502-9
1.6.4 Dust See ISO 8502-3
PROTECTIVE PAINT SYSTEMS - PARTICULAR CONSTRAINTS WITH RESPECT TO PAINT
1.7
MATERIALS
1.7.1 Choice of the coating system
1.7.1.1
Protective paint systems for initial protection and See ISO 12944-5, ISO 12944-7 and annexes G, H
complete renewal. and table 2.
1.7.1.2 Systems according to ISO 12944-5.
Protective paint systems for repair and partial
renew al.
Corrosion protection may be assessed using
sample areas.
1.7.2
Particular constraints relating to coatings and paint For example: compatibility w ith existing coatings,
w ork edge protection (see ISO 12944-5 and ISO 12944-
7), non-skid coatings or spraying w ith airless rather
than conventional equipment.
1.7.3 Special requirements regarding, in particular: For example: low level of harmful substances,
protection against pollution by such substances,
- health and safety
w aste disposal
- environmental protection
1.8 PROTECTIVE PAINT SYSTEMS - PARTICULAR CONSTRAINTS WITH RESPECT TO PAINT WORK
1.8.1 Location of paint w ork: Workshop and/or on site See ISO 12944-7.
1.8.2 Conditions for paint w ork
For example: timetable and climatic conditions (to
be taken into account by the operator).See also ISO
12944-7.
1.8.3
Method of application of protective paint systems for See ISO 12944-7. Any particular requirements shall
new , touch-up and maintenance w ork be given. Special methods of application shall be
described in full detail.
1.8.4 Constraints relating to paint w ork
For example: compatibility w ith existing coatings,
masking of areas to be w elded (see ISO 12944-7),
edge protection (see ISO 12944-5 and
ISO 12944-7).
1.8.5 Special requirements regarding, in particular: For example: low level of harmful substances,
protection against pollution by such substances,
- health and safety
w aste disposal.
- environmental protection
1.9 PROPERTIES (OTHER THAN ANTI-CORROSIVE) OF PROTECTIVE PAINT SYSTEMS
1.9.1 Colours Colour should preferably be based on colour
designations such as those of the Munsell Colour
System, RAL 840 HR, NF X 08-002, BS 4800, NS
4054, UNE 48103, JPMA Standard Paint Colours or
NCS, in accordance w ith the relevant national
standard w here applicable. The colours of all coats
of a paint system should normally be different from
each other. The last but one coat should normally
be of such a colour that the top coat fully hides it.

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oSIST prEN ISO 12944-8:2016
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Table 1 — Continued
a
No. MAIN ITEM/Sub-item Remarks
1.9.2 Stability of top-coat colour See also No. 1.5.3, this table.
1.10 QUALITY MANAGEMENT
1.10.1 Quality control, quality assurance and records
1.11 INSPECTION AND ASSESSMENT See table 4.
1.11.1 Inspection by internal bodies
1.11.2 Inspection by external (e.g. independent) bodies
1.11.3
Names of external inspection bodies and/or the Such bodies and/or inspectors (e.g. ACQPA,
inspectors themselves FROSIO, ICORR, NACE, SSPC), if any, shall be
nominated by the specifier.
1.11.4 Methods of inspection
The specifier shall indicate the methods and types
of instrument required, using International
Standards, w herever possible. The specifier shall
also indicate the recording and reporting procedures
to be used.
1.11.5 Inspection steps
Details of inspection steps, if any, shall be
described.
1.12 REFERENCE AREAS
1.12.1 Records
The specifier should normally specify for w hich
constituent element(s) of each structure of the
project reference areas are to be provided. If not
1.12.2 Responsibility for records
specified, any of the interested parties may also
request the preparation of reference areas
1.12.3 Location and number of reference area(s)
(conditions to be agreed). Reference areas shall
normally be prepared in the presence of all parties
1.12.4 Size of reference area(s)
concerned, e.g. ow ner, paint manufacturer, sub-
contractors and main contractor. See ISO 12944-7
1.12.5 Marking of reference area(s)
and annex B.
1.13 HEALTH AND SAFETY; ENVIRONMENTAL PROTECTION
1.13.1 Applicable regulations The regulations applicable on site shall be
observed. If appropriate, these shall be described
by the specifier. See ISO 12944-7.
1.14 SPECIAL REQUIREMENTS
1.14.1 Shall be specified by the specifier.
Procedure for dealing w ith deviations from the
specification, limits of inspection and assessment
1.14.2 Shall be specified by the specifier.
Special factors related to e
...