ISO INTERNATIONAL 12944-5 STANDARD Fourth edition 2019-09 Paints and varnishes Corrosion protection of steel structures by protective paint systems Part 5: Protective paint systems Peintures et vernisAnticorrosion des structures en acier par systemes depeinture- Partie 5:Systemes de peinture anticorrosion Referencenumber ISO 12944-5:2019(E) O ISO 2019 IS012944-5:2019(E) COPYRIGHT PROTECTED DOCUMENT OISO2019 All rights reserved.Unless otherwisespecified,or required in the context of its implementation,no part of thispublication may be reproduced or utilized otherwise in any form or by any, means,electronic or mechanical,including photocopying,or posting on the internet or an intranet,without prior written permission.Permission can be requested from either IsO at the address below or ISO's member body in the country of the requester. ISO copyright office CP 401-Ch.de Blandonnet 8 CH-1214 Vernier,Geneva Phone:+41227490111 Fax:+41227490947 Email:[email protected] Website:www.iso.org Published in Switzerland ii O ISO 2019-All rights reserved 12944-5:2019(E) ISO Contents Page Foreword Introduction 1 Scope 2 Normative references 3 Terms and definitions 4 Classification of environments 5 New work and refurbishment 5.1 New work and total refurbishment 5.2 Partial refurbishment 6 Types of paint . 6.1 General 6.2 Examples of generic type of paints 6.2.1 Alkydpaints (AK) 6.2.2 Acrylicpaints (AY) 6.2.3 Ethyl silicate paints (ESI) 6.2.4 Paintsfor epoxy coatings(EP) 6.2.5 Paints for polyurethane coatings (PUR) 6.2.6 Paints for polyaspartic coatings (PAS) 6.2.7 Paints for polysiloxane coatings (PS) Paint systems 7 7.1 Priming coats and type of primers 7.1.1 General 7.1.2 Types of primer 7.2 Subsequent coats 7.2.1 General 7.2.2 Intermediate coats 7.2.3 Topcoats 7.3 Dry film thickness 7.4 Durability 7.5 Shop and site application 8 Tables for protective paint systems for C2 to C5, Iml, Im2 and Im3 8.1 Reading the tables 8.2 Parameters influencing durability 8.3 Designation ofthepaint systems listed .. 8.4 Guidelines for selecting the appropriate paint system Annex A (normative) Abbreviated terms and descriptions 10 Annex B(normative) Minimum requirements for corrosion protection systems Annex C(informative) Paint systems for carbon steel ......... Annex D(informative)Paint systems on hot dip galvanized steel 18 Annex E(informative) Paint systems on thermal -sprayed metallic coatings .20 Annex F(informative)Pre-fabrication primers Bibliography ....... O IS0 2019-Allrights reserved