SIST EN ISO 12944-1:2018

Paints and varnishes - Corrosion protection of steel structures by protective paint systems - Part 1: General introduction (ISO 12944-1:2017)

This document defines the overall scope of ISO 12944 (all parts). 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
(all parts) for a given project.

Beschichtungsstoffe - Korrosionsschutz von Stahlbauten durch Beschichtungssysteme - Teil 1: Allgemeine Einleitung (ISO 12944-1:2017)

1.1   ISO 12944 behandelt den Korrosionsschutz von Stahlbauten durch Beschichtungssysteme.
1.2   ISO 12944 umfasst nur die Korrosionsschutzfunktion von Beschichtungssystemen. Andere Schutz-funk¬tio¬nen, wie der Schutz gegen
   Mikroorganismen (Bewuchs, Bakterien, Pilze usw.),
   Chemikalien (Säuren, Alkalien, organische Lösemittel, Gase usw.),
   mechanische Belastungen (Abrieb usw.) und
   Feuer
sind in ISO 12944 nicht erfasst.
1.3   Der Anwendungsbereich ist charakterisiert durch:
   die Art des Bauwerks,
   die Art der zu beschichtenden Oberfläche und der Oberflächenvorbereitung,
   die Art der Umgebungsbedingungen,
   die Art des Beschichtungssystems,
   die Art der Maßnahme und
   die Schutzdauer des Beschichtungssystems.
IS0 12944 umfasst nicht alle Arten von Bauwerken, Oberflächen und Oberflächenvorbereitungen. Trotz-dem kann die Norm nach Vereinbarung sinngemäß auch auf solche Fälle angewendet werden, die nicht auf¬ge¬führt sind.
Einzelheiten sind in 1.3.1 bis 1.3.6 näher beschrieben.
1.3.1   Art des Bauwerks
ISO 12944 bezieht sich auf Bauwerke, deren Bauteile aus unlegiertem oder niedriglegiertem Stahl (z. B. nach EN 10025) von mindestens 3 mm Dicke bestehen und die entsprechend einem Tragsicherheitsnachweis aus¬gelegt sind.
Bauteile aus Stahlbeton sind in ISO 12944 nicht erfasst.
1.3.2   Art der zu beschichtenden Oberfläche und Oberflächenvorbereitung
ISO 12944 umfasst die folgenden Arten von Oberflächen aus unlegiertem oder niedriglegiertem Stahl und deren Vorbereitung:
   unbeschichtete Oberflächen;
   Oberflächen mit thermisch gespritztem Überzug aus Zink, Aluminium oder deren Legierungen;
   feuerverzinkte Oberflächen;
   galvanisch verzinkte Oberflächen;
   sherardisierte Oberflächen;
   Oberflächen mit Fertigungsbeschichtungen;
   andere beschichtete Oberflächen.
1.3.3   Art der Umgebungsbedingungen
ISO 12944 behandelt:
   6 Korrosivitätskategorien für atmosphärische Umgebungsbedingungen,
   3 Kategorien für Bauwerke in Wasser oder Erdreich,
   spezielle Fälle.
1.3.4   Art des Beschichtungssystems
ISO 12944 umfasst eine Reihe von Beschichtungsstoffen, die unter den Umgebungsbedingungen trocknen oder härten. Nicht in ISO 12944 erfasst sind:
   Pulverlacke,
   Einbrennlacke,
   wärmehärtende Beschichtungsstoffe,
   Beschichtungen mit mehr als 2 mm Trockenschichtdicke,
   Auskleidungen von Tanks,
   Produkte für die chemische Oberflächenbehandlung (z. B. Lösungen zum Phosphatieren).
1.3.5   Art der Maßnahmen
ISO 12944 umfasst Erstschutz- und Instandsetzungsmaßnahmen.
1.3.6   Schutzdauer des Beschichtungssystems
ISO 12944 berücksichtigt vier Zeitspannen für die Schutzdauer (kurz, mittel, lang und sehr lang). Siehe 3.5 und Abschnitt 4.
Die Schutzdauer ist keine „Gewährleistungszeit“.

Peintures et vernis - Anticorrosion des structures en acier par systèmes de peinture - Partie 1: Introduction générale (ISO 12944-1:2017)

ISO 12944-1:2017 définit le domaine général d'application de l'ISO 12944 (toutes les parties). Il donne quelques termes et définitions de base et fournit une introduction générale aux autres parties de l'ISO 12944. Enfin, il inclut un exposé général sur l'hygiène, la sécurité et la protection de l'environnement, ainsi que les principes directeurs pour l'utilisation de l'ISO 12944 (toutes les parties) dans le cadre d'un projet donné.

Barve in laki - Protikorozijska zaščita jeklenih konstrukcij z zaščitnimi premaznimi sistemi - 1. del: Splošna predstavitev (ISO 12944-1:2017)

V tem dokumentu je opredeljeno celotno področje uporabe standarda ISO 12944 (vsi deli). Podaja nekaj osnovnih pojmov in definicij ter splošen uvod v druge dele standarda ISO 12944. Poleg tega vključuje splošno izjavo o zdravju, varnosti in varovanju okolja ter smernice za uporabo standarda ISO 12944
(vsi deli) za določen projekt.

General Information

• Status: Published
• Public Enquiry End Date: 21-Apr-2016
• Publication Date: 10-Jan-2018
• ICS: 25.220.20 - Surface treatment
• ICS: 87.040 - Paints and varnishes
• ICS: 91.080.13 - Steel structures
• Technical Committee: IBLP - Paints and varnishes
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 27-Dec-2017
• Due Date: 03-Mar-2018
• Completion Date: 11-Jan-2018
• Directive: TP086 - Pravilnik o ukrepih za varstvo pred utopitvami na kopališčih
• Ref Project: EN ISO 12944-1:2017 - Paints and varnishes - Corrosion protection of steel structures by protective paint systems - Part 1: General introduction (ISO 12944-1:2017)

Relations

• Replaces: SIST EN ISO 12944-1:1998 - Paints and varnishes - Corrosion protection of steel structures by protective paint systems - Part 1: General introduction (ISO 12944-1:1998)
• Effective Date: 01-Feb-2018

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 12944-1:2018
01-februar-2018
1DGRPHãþD
SIST EN ISO 12944-1:1998
%DUYHLQODNL3URWLNRUR]LMVND]DãþLWDMHNOHQLKNRQVWUXNFLM]]DãþLWQLPLSUHPD]QLPL
VLVWHPLGHO6SORãQDSUHGVWDYLWHY,62
Paints and varnishes - Corrosion protection of steel structures by protective paint
systems - Part 1: General introduction (ISO 12944-1:2017)
Beschichtungsstoffe - Korrosionsschutz von Stahlbauten durch Beschichtungssysteme -
Teil 1: Allgemeine Einleitung (ISO 12944-1:2017)
Peintures et vernis - Anticorrosion des structures en acier par systèmes de peinture -
Partie 1: Introduction générale (ISO 12944-1:2017)
Ta slovenski standard je istoveten z: EN ISO 12944-1:2017
ICS:
25.220.20 Površinska obdelava Surface treatment
87.040 Barve in laki Paints and varnishes
91.080.13 Jeklene konstrukcije Steel structures
SIST EN ISO 12944-1:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 12944-1:2018

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SIST EN ISO 12944-1:2018


EN ISO 12944-1
EUROPEAN STANDARD

NORME EUROPÉENNE

December 2017
EUROPÄISCHE NORM
ICS 87.020; 91.080.13 Supersedes EN ISO 12944-1:1998
English Version

Paints and varnishes - Corrosion protection of steel
structures by protective paint systems - Part 1: General
introduction (ISO 12944-1:2017)
Peintures et vernis - Anticorrosion des structures en Beschichtungsstoffe - Korrosionsschutz von
acier par systèmes de peinture - Partie 1: Introduction Stahlbauten durch Beschichtungssysteme - Teil 1:
générale (ISO 12944-1:2017) Allgemeine Einleitung (ISO 12944-1:2017)
This European Standard was approved by CEN on 30 October 2017.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 12944-1:2017 E
worldwide for CEN national Members.

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SIST EN ISO 12944-1:2018
EN ISO 12944-1:2017 (E)
Contents Page
European foreword . 3
2

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SIST EN ISO 12944-1:2018
EN ISO 12944-1:2017 (E)
European foreword
This document (EN ISO 12944-1:2017) has been prepared by Technical Committee ISO/TC 35 “Paints
and varnishes” in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes” the
secretariat of which is held by DIN.
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 June 2018, and conflicting national standards shall be
withdrawn at the latest by June 2018.
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.
This document supersedes EN ISO 12944-1:1998.
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, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 12944-1:2017 has been approved by CEN as EN ISO 12944-1:2017 without any
modification.

3

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SIST EN ISO 12944-1:2018

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SIST EN ISO 12944-1:2018
INTERNATIONAL ISO
STANDARD 12944-1
Second edition
2017-11
Paints and varnishes — Corrosion
protection of steel structures by
protective paint systems —
Part 1:
General introduction
Peintures et vernis — Anticorrosion des structures en acier par
systèmes de peinture —
Partie 1: Introduction générale
Reference number
ISO 12944-1:2017(E)
©
ISO 2017

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SIST EN ISO 12944-1:2018
ISO 12944-1:2017(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2017 – All rights reserved

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SIST EN ISO 12944-1:2018
ISO 12944-1:2017(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 General introduction to the ISO 12944 series . 3
4.1 Summary . 3
4.2 Protective functions covered . 3
4.3 Field of application . 3
4.3.1 Overview . 3
4.3.2 Type of structure . 4
4.3.3 Type of surface and surface preparation . 4
4.3.4 Type of environment . 4
4.3.5 Type of protective paint system . 4
4.3.6 Type of work . 4
4.3.7 Durability of the protective paint system . 5
5 General considerations and requirements . 5
6 Health and safety and environmental protection . 6
7 Information on the other parts of ISO 12944 . 6
Annex A (informative) Guidelines for using ISO 12944 (all parts) for a given project .8
Bibliography . 9
© ISO 2017 – All rights reserved iii

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SIST EN ISO 12944-1:2018
ISO 12944-1:2017(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 on 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 the following
URL: www.iso.org/iso/foreword.html.
This document 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 (ISO 12944-1:1998), which has been
technically revised.
The main changes compared to the previous edition are as follows:
— some parts of the scope have been moved to Clause 4;
— the terms and definitions which were not used in the main part of the standard have been deleted;
— the normative references have been updated;
— the requirements regarding sample areas have been included;
— 7.8 with reference to ISO 12944-9 has been added.
— a bibliography has been added.
A list of all parts in the ISO 12944 series can be found on the ISO website.
iv © ISO 2017 – All rights reserved

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SIST EN ISO 12944-1:2018
ISO 12944-1:2017(E)

Introduction
Unprotected steel in the atmosphere, in water and in soil is subjected to corrosion that can lead to
damage. Therefore, to avoid corrosion damage, steel structures are normally protected to withstand
the corrosion stresses to which they will be subjected during the service life required of the structure.
There are different ways of protecting steel structures from corrosion. ISO 12944 (all parts) 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, owners of such structures, planners,
consultants, companies carrying out corrosion protection work, inspectors of protective coatings
and manufacturers of coating materials need to have at their disposal state-of-the-art information in
concise form on corrosion protection by paint systems. It is vital that such information is as complete as
possible, unambiguous and easily understandable to avoid difficulties and misunderstandings between
the parties concerned with the practical implementation of protection work.
ISO 12944 (all parts) 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 (all
parts) is familiar with other relevant International Standards, in particular those dealing with surface
preparation.
Although ISO 12944 (all parts) 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 ISO 12944 (all parts) can result in
serious financial consequences.
© ISO 2017 – All rights reserved v

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SIST EN ISO 12944-1:2018

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SIST EN ISO 12944-1:2018
INTERNATIONAL STANDARD ISO 12944-1:2017(E)
Paints and varnishes — Corrosion protection of steel
structures by protective paint systems —
Part 1:
General introduction
1 Scope
This document defines the overall scope of ISO 12944 (all parts). 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
(all parts) for a given project.
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 4628-1, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity
and size of defects, and of intensity of uniform changes in appearance — Part 1: General introduction and
designation system
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 12944-2, Paints and varnishes — Corrosion protection of steel structures by protective paint systems —
Part 2: Classification of environments
ISO 12944-3, Paints and varnishes — Corrosion protection of steel structures by protecti
...

SLOVENSKI STANDARD
oSIST prEN ISO 12944-1:2016
01-april-2016
%DUYHLQODNL.RUR]LMVND]DãþLWDMHNOHQLKNRQVWUXNFLM]]DãþLWQLPLSUHPD]QLPL
VLVWHPLGHO6SORãQDSUHGVWDYLWHY,62',6
Paints and varnishes - Corrosion protection of steel structures by protective coating
systems - Part 1: General introduction (ISO/DIS 12944-1:2016)
Beschichtungsstoffe - Korrosionsschutz von Stahlbauten durch Beschichtungssysteme -
Teil 1: Allgemeine Einleitung (ISO/DIS 12944-1:2016)
Peintures et vernis - Anticorrosion des structures en acier par systèmes de revêtement -
Partie 1: Introduction générale (ISO/DIS 12944-1:2016)
Ta slovenski standard je istoveten z: prEN ISO 12944-1
ICS:
25.220.20 Površinska obdelava Surface treatment
87.020 Postopki za nanašanje Paint coating processes
barvnih premazov
91.080.10 Kovinske konstrukcije Metal structures
oSIST prEN ISO 12944-1:2016 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 12944-1:2016

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oSIST prEN ISO 12944-1:2016
DRAFT INTERNATIONAL STANDARD
ISO/DIS 12944-1
ISO/TC 35/SC 14 Secretariat: DIN
Voting begins on: Voting terminates on:
2016-01-28 2016-04-28
Paints and varnishes — Corrosion protection of steel
structures by protective coating systems —
Part 1:
General introduction
Peintures et vernis — Anticorrosion des structures en acier par systèmes de revêtement —
Partie 1: Introduction générale
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.
Should this draft be accepted, a final draft, established on the basis of comments
received, will be submitted to a parallel two-month approval vote in ISO and
THIS DOCUMENT IS A DRAFT CIRCULATED
formal vote in CEN.
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 12944-1:2015(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 2015

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oSIST prEN ISO 12944-1:2016
ISO/DIS 12944-1:2015(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2015, Published in Switzerland
All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2015 – All rights reserved

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oSIST prEN ISO 12944-1:2016
ISO/DIS 12944-1
Contents Page
Foreword . iv
1 Scope . 1
2 Normative references . 3
3 Terms and definitions . 3
4 General considerations and requirements . 4
5 Health and safety and environmental protection . 5
6 Information on the other parts of ISO 12944 . 6

© ISO 2002 – All rights reserved iii

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oSIST prEN ISO 12944-1:2016
ISO/DIS 12944-1
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 12944-1 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 (ISO12944-1:1998), 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
Annex A of this part of ISO 12944 is for information only.
iv © ISO 2002 – All rights reserved

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oSIST prEN ISO 12944-1:2016
ISO/DIS 12944-1
Introduction
Unprotected steel in the atmosphere, in water and in soil is subject 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.

© ISO 2002 – All rights reserved v

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oSIST prEN ISO 12944-1:2016

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oSIST prEN ISO 12944-1:2016
DRAFT INTERNATIONAL STANDARD ISO/DIS 12944-1

Paints and varnishes — Corrosion protection of steel structures
by protective coating systems — Part 1: General introduction
1 Scope
1.1 ISO 12944 deals with the corrosion protection of steel structures by protective paint systems.
1.2 ISO 12944 covers only the corrosion-protective function of paint systems. Other protective functions,
like the protection against:
 microorganisms (marine fouling, bacteria, fungi, etc.),
 chemicals (acids, alkalis, organic solvents, gases, etc.),
 mechanical action (abrasion, etc.) and
 fire
are not covered by ISO 12944.
1.3 The field of application is characterized by:
 the type of structure,
 the type of surface and surface preparation,
 the type of environment,
 the type of protective paint system,
 the type of work and
 the durability of the protective paint system.
Although ISO 12944 does not cover all types of structure, surface and surface preparation, it may, by
agreement, also be applied to those cases which are not covered by the standard.
The various aspects of the field of application are described in more detail in 1.3.1 to 1.3.6.
1.3.1 Type of structure
ISO 12944 concerns structures made of carbon or low-alloy steel (e.g. in accordance with EN 10025) of not
less than 3 mm thickness, which are designed using an approved strength calculation.
Not covered by ISO 12944 are concrete structures reinforced with steel.
1.3.2 Type of surface and surface preparation
ISO 12944 deals with the following types of surface consisting of carbon or low-alloy steel, and their
preparation:
 uncoated surfaces;
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 surfaces thermally sprayed with zinc, aluminium or their alloys;
 hot-dip-galvanized surfaces;
 zinc-electroplated surfaces;
 sherardized surfaces;
 surfaces painted with prefabrication primer;
 other painted surfaces.
1.3.3 Type of environment
ISO 12944 deals with:
 six corrosivity categories for atmospheric environments,
 three categories for structures immersed in water or buried in soil,
 special cases.
1.3.4 Type of protective paint system
ISO 12944 covers a range of paint products which dry or cure at ambient conditions. Not covered by ISO
12944 are:
 powder coating materials,
 stoving enamels,
 heat-cured paints,
 coatings of more than 2 mm dry-film thickness,
 linings of tanks,
 products for the chemical treatment of surfaces (e.g. phosphating solutions).
1.3.5 Type of work
ISO 12944 covers both new work and maintenance.
1.3.6 Durability of the protective paint system
ISO 12944 considers four different durability ranges (low, medium, high, very high). See 3.5 and Clause 4.
The durability range is not a “guarantee time”.
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2 Normative references
The following referenced documents are indispensable for the application 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 4628-1, Paints and varnishes — Evaluation of degradation of coatings — Designation of
...