EN ISO 12944-2-2017 en Paints and varnishes - Corrosion protection of steel structures by protective paint systems - Part 2 Classification of environments.pdf

1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Paints and varnishes Corrosion protection of steel structures by protective paint systemsPart 2: Classification of environmentsBS EN ISO 129442:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 12944-2 Decemb

2、er 2017 ICS 87.020; 91.080.13 Supersedes EN ISO 12944-2:1998English Version Paints and varnishes - Corrosion protection of steel structures by protective paint systems - Part 2: Classification of environments (ISO 12944-2:2017) Peintures et vernis - Anticorrosion des structures en acier par systmes

3、de peinture - Partie 2: Classification des environnements (ISO 12944-2:2017) Beschichtungsstoffe - Korrosionsschutz von Stahlbauten durch Beschichtungssysteme - Teil 2: Einteilung der Umgebungsbedingungen (ISO 12944-2:2017) This European Standard was approved by CEN on 30 October 2017. CEN members a

4、re 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

5、 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 C

6、entre 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, Lithu

7、ania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Rue de la Sc

8、ience 23, B-1040 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 12944-2:2017 ENational forewordThis British Standard is the UK implementation of EN ISO 129442:2017. It is identical to ISO 129442:2017. It supersed

9、es BS EN ISO 129442:1998, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee STI/21, Paint systems and surface preparation for metallic substrates.A list of organizations represented on this committee can be obtained on request to its secretary.This publi

10、cation does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 91030 2ICS 91.080.10; 87.020Compliance with a British Standard cannot confer

11、immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN ISO 129442:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE

12、NORM EN ISO 12944-2 December 2017 ICS 87.020; 91.080.13 Supersedes EN ISO 12944-2:1998English Version Paints and varnishes - Corrosion protection of steel structures by protective paint systems - Part 2: Classification of environments (ISO 12944-2:2017) Peintures et vernis - Anticorrosion des struct

13、ures en acier par systmes de peinture - Partie 2: Classification des environnements (ISO 12944-2:2017) Beschichtungsstoffe - Korrosionsschutz von Stahlbauten durch Beschichtungssysteme - Teil 2: Einteilung der Umgebungsbedingungen (ISO 12944-2:2017) This European Standard was approved by CEN on 30 O

14、ctober 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

15、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 th

16、e 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, Ire

17、land, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Manag

18、ement Centre: Rue de la Science 23, B-1040 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 12944-2:2017 EBS EN ISO 129442:2017EN ISO 12944-2:2017 (E) 3 European foreword This document (EN ISO 12944-2:2017) has bee

19、n 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

20、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

21、 or all such patent rights. This document supersedes EN ISO 12944-2:1998. 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, Den

22、mark, 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. Endor

23、sement notice The text of ISO 12944-2:2017 has been approved by CEN as EN ISO 12944-2:2017 without any modification. BS EN ISO 129442:2017ISO 12944-2:2017(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 24 Corrosion stresses due to the atmosphere, water and so

24、il 34.1 Atmospheric corrosion 34.2 Corrosion in water and soil 34.2.1 General 34.2.2 Structures immersed in water . 34.2.3 Structures buried in soil 44.3 Special cases 45 Classification of environments 45.1 Atmospheric-corrosivity categories . 45.2 Categories for water and soil 5Annex A (informative

25、) Climatic conditions 7Annex B (informative) Special cases . 8Bibliography .11 ISO 2017 All rights reserved iiiContents PageBS EN ISO 129442:2017ISO 12944-2:2017(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodi

26、es). 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

27、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 desc

28、ribed 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 t

29、o 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

30、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

31、related to conformity assessment, as well as information about ISOs 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 varnish

32、es, Subcommittee SC 14, Protective paint systems for steel structures.This second edition cancels and replaces the first edition (ISO 12944-2:1998), which has been technically revised.The main changes compared to the previous edition are as follows: the normative references have been updated; 4.2.1

33、“General“ has been added; the units in Table 1 have been corrected; the bibliography has been updated; the text has been editorially revised.A list of all parts in the ISO 12944 series can be found on the ISO website.iv ISO 2017 All rights reservedBS EN ISO 129442:2017ISO 12944-2:2017(E)Introduction

34、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 struc

35、ture.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 requir

36、e 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 ne

37、ed 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 p

38、ractical 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 Internat

39、ional 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 requireme

40、nts and recommendations given in ISO 12944 (all parts) can result in serious financial consequences.ISO 12944-1 defines the overall scope 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 o

41、n health, safety and environmental protection, and guidelines for using ISO 12944 (all parts) for a given project.This document describes the environmental impact on steel structures. It covers structures exposed to the atmosphere as well as those immersed in water or buried in soil. For different a

42、tmospheric environments, a classification system based on corrosivity categories is also presented. Different environments for immersed and buried structures are also described. All these environments are relevant to the choice of protective paint systems. ISO 2017 All rights reserved vBS EN ISO 129

43、442:2017Paints and varnishes Corrosion protection of steel structures by protective paint systems Part 2: Classification of environments1 ScopeThis document deals with the classification of the principal environments to which steel structures are exposed, and the corrosivity of these environments. T

44、his document defines atmospheric-corrosivity categories, based on mass loss (or thickness loss) by standard specimens, and describes typical natural atmospheric environments to which steel structures are exposed, giving advice on the estimation of the corrosivity, describes different categories of e

45、nvironment for structures immersed in water or buried in soil, and gives information on some special corrosion stresses that can cause a significant increase in corrosion rate or place higher demands on the performance of the protective paint system.The corrosion stresses associated with a particula

46、r environment or corrosivity category represent one essential parameter governing the selection of protective paint systems.2 Normative referencesThe 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 r

47、eferences, 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 paint systems Part 1: General introductionISO 12944-3, Paints a

48、nd varnishes Corrosion protection of steel structures by protective paint systems Part 3: Design considerationsISO 12944-4, Paints and varnishes Corrosion protection of steel structures by protective paint systems Part 4: Types of surface and surface preparationISO 12944-5, Paints and varnishes Corr

49、osion protection of steel structures by protective paint systems Part 5: Protective paint systemsISO 12944-6, Paints and varnishes Corrosion protection of steel structures by protective paint systems Part 6: Laboratory performance test methodsISO 12944-7, Paints and varnishes Corrosion protection of steel structures by protective paint systems Part 7: Execution and supervision of paint workISO 12944-8, Paints and varnishes Corrosion protection of steel structures by protective paint systems Part 8: Development o