Wind protection coating standard and certification

At present, there is no national standard for wind power anti-corrosion technology, mainly referring to the requirements for anti-corrosion in national standards related to wind turbines. Foreign countries have unified and standardized standards for wind power protection, and all aspects of anti-corrosion technology are stipulated.

The state has established a leading group for wind power standard construction in the energy industry, an expert advisory group, and a standardization technical committee. A wind power standard system will soon be established, including wind farm planning and design, construction and installation of wind farms, operation and maintenance of wind farms, and grid-connected wind farm management technologies. Wind power machinery equipment, wind power electrical equipment and other six categories of standards. Among them, provisions for the protection of wind power equipment should be stipulated.

The "Offshore Wind Turbine Specifications" developed by China Classification Society has organized a review meeting and passed. The "Specifications of Offshore Wind Turbines" put forward technical requirements for the corrosion of the internal and external surfaces of steel structures, mechanical components, electrical components, concrete foundation structures, and the external surfaces of wind turbine blades.

The national standards of wind turbines mainly include the following:

Wind turbine safety requirements (GB18451.1-2001)/National standards of the People's Republic of China;

Wind Turbine Acceptance Specification (GB\T20319-2006)/National Standard of the People's Republic of China;

Wind Turbine Tower (GB\T19072-2003)/National Standard of the People's Republic of China;

JB/T10194-2000 Wind Turbine Blade / Machinery Industry Standard for Wind Turbines.

The determination of anti-corrosion coatings for steel structures in wind farms is mainly based on three criteria:

1) ISO 12944 Paint and Varnish - Corrosion Protection of Protective Coating Systems for Steel Structures (1998): ISO 12944 is an important standard for anti-corrosion coating systems developed for steel structures in various corrosive environments, especially atmospheric corrosion environments.

2) NORSOKM501 surface treatment and protective coating (revised 4th edition, 2004): NORSOKM501 is an important standard for anti-corrosion coatings and coatings for offshore oil platforms in the Nordic countries, and is therefore an important reference standard for the protection of offshore wind farm steel structures.

3) ISO20340 Paints and varnishes - Performance requirements for offshore engineering and related structural protective coating systems (2003): ISO 20340 is the minimum performance requirement for offshore offshore steel structure anti-corrosion coatings. It is ISO 12944 for corrosion protection of offshore steel structures. The paint is an important reference standard. Therefore, ISO20340 is also an important reference standard for offshore wind farm steel structure coating systems.

At present, the most authoritative certification of wind power coatings is the GL certification of German Lloyd's Register of Shipping. It has a complete set of wind turbine standards, which includes standards for wind power coatings. Several foreign wind power coating manufacturers such as Mankiewicz, Bergolin, Maga and PPG have passed the GL certification.

The main test items and basis for GL certification include:

Viscosity (ISO2284), density (ISO2881), non-volatile content (ISO3251), hardness (ISO1519), bending (ISO9352), abrasion resistance (ISO7784), aging resistance (ISO11341), adhesion test (ISO4624). Adhesion tests were performed under two conditions: a. FRP template, 24h; b. Steel plate: Salt fog 480h, water condensing 720h.

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