ISO 12944.7-2017 Paints and varnishes protective paint systems for corrosion protection against steel structures – Part 7: Application and supervision of coatings

introduction
ISO (International Organization for Standardization) is a global alliance of national standards bodies (ISO member bodies). The development of international standards is usually carried out through ISO technical committees. Each member institution interested in a subject on which a technical committee has been established has the right to be represented on that committee. International governmental and non-governmental organizations liaising with ISO are also involved in this work. ISO works closely with the International Electrotechnical Commission (IEC) on all matters of electrical standardization.

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ISO 12944.7-2017 Paints and varnishes protective paint systems for corrosion protection against steel structures – Part 7: Application and supervision of coatings

Any trade names used in this document are provided for the convenience of the user and do not constitute an endorsement.

Voluntary, related standards and conformity assessment related ISO specific and express the meaning of terminology as well as in relevant ISO technical barriers to trade (TBT) adhere to the principle of the world trade organization (WTO) information, please refer to the following URL:iso.org/iso/foreword.html.

This document was prepared by Technical Committee ISO/TC 35, Paints and Varnishes, Subcommittee SC 14, Protective Coating Systems for Steel Structures.

The second edition cancels and replaces the technically revised first edition (ISO 12944-7:1998).

The main changes from the previous edition are as follows:

– Normative references have been updated;

– Terms and definitions have been updated;

– Added bibliography;

— The text has been edited and revised.

A list of all parts in the ISO 12944 series can be found on the ISO website.

ISO 12944.7-2017 Paints and varnishes protective paint systems for corrosion protection against steel structures – Part 7: Application and supervision of coatings

introduce
Unprotected steel in the atmosphere, water and soil can be corroded, leading to damage. Therefore, in order to avoid corrosion damage, steel structures are usually protected to withstand the corrosion stress that will be endured during the required service life of the structure.

There are different ways to protect steel structures from corrosion. ISO 12944 (All parts) deals with the protection of coating systems and covers, and in the individual components, all functions are important to achieve adequate corrosion protection. Other measures or other measures may be taken, but require special agreement between the parties concerned.

In order to ensure the effective corrosion protection of steel structures, owners of such structures, planners, consultants, companies performing corrosion protection work, protective coating inspectors and coating material manufacturers need to have new information on the corrosion protection of coating systems. It goes without saying that such information should be as complete, clear and easy to understand as possible in order to avoid difficulties and misunderstandings in the actual implementation of protection work by the parties concerned.

ISO 12944 (all parts) aims to provide 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 users of ISO 12944 (all parts) are familiar with other relevant international standards, particularly those dealing with surface treatment.

ISO 12944.7-2017 Paints and varnishes protective paint systems for corrosion protection against steel structures – Part 7: Application and supervision of coatings

While ISO 12944 (all parts) does not have financial and contractual implications, please be aware of the fact that failure to comply with the requirements and recommendations given in ISO 12944 (all parts) can lead to serious financial consequences due to the large impact of inadequate corrosion protection.

ISO 12944-1 defines the overall scope of ISO 12944. It provides some basic terms and definitions and Outlines the rest of ISO 12944. In addition, it includes a general statement on health, safety and environmental protection, as well as guidance on the use of ISO 12944 (all parts) in specific projects.

This document describes how to perform and supervise painting work on steel structures after preparing surfaces according to ISO 12944-4. An example of a protective coating system suitable for this purpose is given in ISO 12944-5.

1 Range
This document deals with the execution and supervision of painting work on steel structures in the workshop or on site.

This document is not intended for

– Prepare the surface to be painted (see ISO 12944-4) and supervise such work,

– Application of metal coatings, as well

ISO 12944.7-2017 Paints and varnishes protective paint systems for corrosion protection against steel structures – Part 7: Application and supervision of coatings

Pretreatment methods, such as phosphating and chromatization, and paint application methods, such as dipping, powder coatings or coil coatings.

2 Normative references
The following files are referenced in text in a manner that constitutes part or all of the requirements of this document. For dated references, only the cited version applies. For undated references, a new version of the reference (including any revisions) applies.

ISO 1513, Paints and varnishes – Examination and preparation of test samples

ISO 8502-4, Preparation of steel substrates before painting and related products – Tests for assessment of surface cleanliness – Part 4: Guidance for estimating the probability of condensation before coating application

ISO 12944-1, Paints and varnishes – Corrosion protection of steel structures by protective coating systems – Part 1: General introduction

ISO 12944-4, Paints and varnishes – Corrosion protection of steel structures by protective coating systems – Part 4: Types of surfaces and surface treatments

ISO 12944.7-2017 Paints and varnishes protective paint systems for corrosion protection against steel structures – Part 7: Application and supervision of coatings

ISO 15528, Paints, varnishes and raw materials for paints and varnishes – Sampling

ISO 19840, Paints and varnishes – Corrosion protection of steel structures by protective coating systems – Standard for measurement and acceptance of dry film thickness on rough surfaces

3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 12944-1 and below apply.

ISO and IEC maintain terminology databases for standardization at the following addresses:

– IEC electronic encyclopedia: available at electropedia.org/

– ISO Online browsing platform: available at iso.org/obp

3.1 Reference Area

Define the part of the structure where the coating system has been applied according to specifications and approved by all interested parties

ISO 12944.7-2017 Paints and varnishes protective paint systems for corrosion protection against steel structures – Part 7: Application and supervision of coatings

3.2 Reference Specimen

Objects, which are recommended to have a geometry that represents a structure, in which the coating system has been applied according to specifications and approved by all interested parties

3.3 Striped Coat

Additional paint is usually applied only to the edges, welds, fasteners, and other irregular areas of the steel structure before it is fully painted

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