ISO/CD 25249-2

Corrosion protection of offshore wind structures — Part 2: Primary steel components — general requirements for thermal spraying and painting ISO/CD 25249-2

General information

30.60   Close of voting/ comment period   Feb 15, 2026

ISO

ISO/TC 107 Metallic and other inorganic coatings

International Standard

Scope

This standard specifies the general requirements to surface corrosion protection of structural members for offshore wind structurers for execution of the preparation-, and coating process on steel tower structures for off-shore wind in order to ensure adequate levels of durability of the following types of coating protective systems:
— metal material (e.g., Zn99,99, ZnAl15) based applied using thermal spraying and supplied in the state: as-sprayed, sealed, or with organic coating of e.g. type epoxy-, and polyurethane;
— based on paint products of e.g. type: zinc-rich-, epoxy-, and polyurethane.
related to be following topics:
— Execution specification of coating systems;
— Manufacturer’s documentation (Quality assurance system, quality plan etc.);
— Manufacturing process;
— Inspection, testing correction;
— As-built documentation
This standard may be required to be used in conjunction with one or more of the following Parts:
— Part 1: Design considerations;
— Part 3: Primary steel components - Supplementary requirements for Foundations;
— Part 4: Primary steel components - Supplementary requirements for Towers;
— Part 5: Supplementary requirements for primary structural steel- and cast components for rotor nacelle assembly;
NOTE
Typical the following components should be considered as offshore wind and related structures.
— Offshore steel foundation for wind turbine, substation and topsides
— Steel Tower sections
— Structural steel, cast iron or cast steel, and welded/bolted main components in the rotor-nacelle assembly.

Life cycle

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ISO/CD 25249-2
30.60 Close of voting/ comment period
Feb 15, 2026




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