ISO 12944.9-2018 Paints and varnishes protective paint systems for corrosion protection against steel structures – Part 9: Protective coating systems for Marine buildings and related structures and laboratory performance test methods

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.

The procedures used to develop this document and those used for further maintenance are described in Part 1 of the ISO/IEC Directive. In particular, attention should be paid to the different approval criteria required for different types of ISO documents. This document has been drafted in accordance with the editing rules of ISO/IEC Directive Part 2 (see iso.org/directives).

Please note that certain elements of this document may be subject to patent rights. ISO is not responsible for identifying any or all such patents. Details of any patent rights identified during the preparation of the document will be found in the introduction and/or in the list of patent claims received by ISO (see iso.org/patents).

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ISO 12944.9-2018 Paints and varnishes protective paint systems for corrosion protection against steel structures – Part 9: Protective coating systems for Marine buildings and related structures and laboratory performance test methods

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

The first version of ISO 12944-9 cancelled and replaced the technically revised ISO 20340:2009.

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

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.

ISO 12944.9-2018 Paints and varnishes protective paint systems for corrosion protection against steel structures – Part 9: Protective coating systems for Marine buildings and related structures and laboratory performance test methods

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.

Although ISO 12944 (all parts) has no financial and contractual implications, please note that due to the high impact of inadequate corrosion protection, failure to comply with the requirements and recommendations set out in this document can have serious financial consequences.

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.

ISO 12944.9-2018 Paints and varnishes protective paint systems for corrosion protection against steel structures – Part 9: Protective coating systems for Marine buildings and related structures and laboratory performance test methods

Offshore and associated structures require special attention in order to be able to withstand the severe corrosion stresses they are subjected to during their service life and to minimize the risk of failure affecting safety, operating costs or capital costs.

In order to establish adequate corrosion protection and ensure the best performance of the coating, it is necessary to specify the requirements for the protective coating system and the associated laboratory performance tests to assess its possible durability.

In order to achieve the same performance as shown in the tests, the importance of proper surface treatment and coating application cannot be overstated. The implementation needs to be closely monitored.

This document emphasizes highly durable coating systems designed to minimize maintenance, thereby reducing safety considerations and environmental impact.

ISO 12944.9-2018 Paints and varnishes protective paint systems for corrosion protection against steel structures – Part 9: Protective coating systems for Marine buildings and related structures and laboratory performance test methods

1 Range
This document specifies the performance requirements for protective coating systems for offshore and associated structures (i.e. structures exposed to the Marine atmosphere and those immersed in seawater or brackish water). Such structures are exposed to the corrosive category CX (offshore) and immersion category Im4 as defined in ISO 12944-2.

This part of ISO 12944 describes highly durable coating systems that comply with ISO 12944-1.

This document applies to structures made of carbon steel, excluding Cd/Bi Cr and Zn/Bi Cr surfaces. It does not apply to surfaces under insulation or concrete.

This document is intended for paint systems with an operating temperature range of −20°C to +80°C, and performance tests are designed to verify the suitability of the paint system in this temperature range.

This document is intended for immersion coating systems (Im4) with ambient operating temperatures up to 50°C.

This document specifies:

– Test methods for determining the composition of different components of protective coating systems;

– Laboratory performance test methods for evaluating the possible durability of protective paint systems;

– Criteria used to evaluate performance test results.

This document covers the requirements for the new job and any repairs required before starting. It can also be used for maintenance where a complete refurbishment is performed and the underlying metal substrate is completely exposed by sandblasting.

ISO 12944.9-2018 Paints and varnishes protective paint systems for corrosion protection against steel structures – Part 9: Protective coating systems for Marine buildings and related structures and laboratory performance test methods

It does not involve general maintenance that normally uses surface treatment methods other than sandblasting cleaning.

This document relates to structures made of carbon steel with a thickness of not less than 3 mm, which are designed using approved strength calculations.

This document does not cover the following:

– Structures constructed of stainless steel and structures constructed of copper, titanium or aluminium or their alloys;

– Steel cable;

– Buried structure;

– Pipeline;

– Inside the tank.

ISO 12944.9-2018 Paints and varnishes protective paint systems for corrosion protection against steel structures – Part 9: Protective coating systems for Marine buildings and related structures and laboratory performance test methods

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 1461, hot-dip galvanizing coatings on iron and steel products – Specification and test methods

ISO 1514, Paints and varnishes – Standard panels for testing

ISO 2063 (all parts), thermal spraying – Zinc, aluminium and their alloys

ISO 2811 (all components), paints and varnishes – determination of density

ISO 2812-2 Paints and varnishes – Determination of resistance to liquids – Part 2: Water immersion method

ISO 3233-1, Paints and varnishes – Determination of percentage of non-volatile substances by volume – Part 1: Method for determination of non-volatile substances using a coating test panel and for determination of dry film density by Archimedean principle

ISO 3251, Paints, varnishes and plastics – Determination of non-volatile content

ISO 3270, Paints and varnishes and their raw materials – regulation and testing of temperature and humidity

ISO 4624, Paints and varnishes – adhesion pull-out test

ISO 4628-2, Paints and varnishes – Assessment of coating degradation – designation of number and size of defects, and intensity of uniform changes in appearance – Part 2: Assessment of degree of foaming

ISO 12944.9-2018 Paints and varnishes protective paint systems for corrosion protection against steel structures – Part 9: Protective coating systems for Marine buildings and related structures and laboratory performance test methods

ISO 4628-3, Paints and varnishes – Assessment of degradation of coatings – number and size of defects and assignment of intensity of uniform change in appearance – Part 3: Assessment of degree of rust

ISO 4628-4, Paints and varnishes – Assessment of coating degradation – designation of number and size of defects, and intensity of uniform changes in appearance – Part 4: Assessment of degree of cracking

ISO 4628-5, Paints and varnishes – Assessment of degradation of coatings – Number and size of defects and designation of intensity of uniform change in appearance – Part 5: Assessment of degree of peeling

ISO 4628-6, Paints and varnishes – Assessment of coating degradation – Number and size of defects and assignment of intensity of uniform change in appearance – Part 6: Assessment of degree of chalking by tape method

ISO 8501-1, Preparation of steel substrates prior to painting and related products – Visual assessment of surface cleanliness – Part 1: Rust grades and preparation grades of uncoated steel substrates and steel substrates after the overall removal of prior coatings

ISO 8503-1, Preparation of steel substrates prior to coating of paints and related products – Surface roughness characteristics of shot blasted clean steel substrates – Part 1: Specification and definition of ISO surface profile comparators for evaluating sandblasted clean surfaces

ISO 8503-2, Preparation of steel substrates prior to coating of paints and related products – Surface roughness characteristics of sandblasted clean steel substrates – Part 2: Method for contour classification of sandblasted clean steel surfaces – Comparator procedure

ISO 12944.9-2018 Paints and varnishes protective paint systems for corrosion protection against steel structures – Part 9: Protective coating systems for Marine buildings and related structures and laboratory performance test methods

ISO 9117-3, Paints and varnishes – Drying tests – Part 3: Surface drying tests using ballotini

ISO 9227, corrosion testing in artificial atmospheres – salt spray testing

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

ISO 12944-2, Paints and varnishes – Corrosion protection of steel structures by protective coating systems – Part 2: Environmental classification

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

ISO 12944-5, Paints and varnishes – Corrosion protection of steel structures with protective coating systems – Part 5: Protective coating systems

ISO 15711-2003, paints and varnishes Determination of cathode destickiness of coatings exposed to seawater

ISO 16474-3:2013, Paints and varnishes. Methods of exposure to laboratory light sources. Part 3: Fluorescent UV lamps

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

ISO 29601, Paints and varnishes – Corrosion protection of protective coating systems – dry film porosity assessment

3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 12944-1, ISO 12944-5, ISO 1461, ISO 2063 (all parts) and the following 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

ISO 12944.9-2018 Paints and varnishes protective paint systems for corrosion protection against steel structures – Part 9: Protective coating systems for Marine buildings and related structures and laboratory performance test methods

3.1 Marine and related structures

High long-term integrity requirements for installation or mooring structures

Note 1: Typical examples are oil and gas production facilities.

3.2 Product Technical data Sheet Product TDS

Documents designed to provide information about specific coatings products

Note 1: Information types typically include product usage, functionality, service attributes, application attributes, application descriptions, packaging information, and information about storage and handling.

Note 2: For minimum information on special requirements, see 6.4.

3.3 Safety Data Sheet (SDS)

A document designed to provide information on the health and safety aspects of paint products or thinners

Note 1: SDS typically includes information on generic material identification, hazardous ingredients, physical data, fire and explosion data, health hazards, reactivity data, overflow or leak procedures, special protection requirements, and other special precautions.

3.4 Qualification

The process of evaluating protective coating systems using test criteria allows the selection of appropriate coating systems for different environmental exposure conditions

Note 1: The process includes:

– Paint system description (see Table 2 for examples);

– Application tests (see Article 8);

– Laboratory performance testing and evaluation of results (see Article 9);

– Full identification of paint (see 6.5.2 and Annex C).

3.5 Volatile organic Compounds

Any organic liquid and/or solid that evaporates spontaneously under the prevailing temperature and pressure of the atmosphere in which it comes into contact

Note 1: Under U.S. government legislation, the term VOC is limited to those compounds that are photochemically active in the atmosphere (see ASTM D3960). Any other compound is then defined as an exempt compound.

ISO 12944.9-2018 Paints and varnishes protective paint systems for corrosion protection against steel structures – Part 9: Protective coating systems for Marine buildings and related structures and laboratory performance test methods

3.6 Splash Zone and tidal zone

Alternating wet and dry areas due to the influence of tides, wind and/or waves or ballast/load

3.7 Hold the primer

Quick-drying primer, applied to air-blast clean carbon steel to protect it during structural manufacturing, but does not allow welding of carbon steel

Note 1: Primers that allow welding of carbon steel are called “prefabricated primers”.

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