Detail of NB/T 31006-2011

Introduction of NB/T 31006-2011

Technical code for anticorrosion of offshore wind farm steel structures 1 Scope This standard specifies the surface pretreatment, the common anticorrosion methods such as coating protection, thermal spraying metal protection and cathodic protection, and their related technical requirements for offshore wind farm steel structures (mainly including fixed steel support structures of wind turbine generator system and transformer substation). This standard is applicable to the anticorrosion design, construction, acceptance, operation and maintenance of offshore wind farm steel structures. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 1740 Determination of resistance to heat and humidity of paint films GB/T 1771 Paints and varnishes - Determination of resistance to neutral salt spray (fog) GB/T 1865 Paints and varnishes - Artificial weathering and exposure to artificial radiation - Exposure to filtered xenon-arc radiation GB/T 4948 Sacrificial anode of Al-Zn-In system alloy GB/T 4949 Chemical analysis methods for sacrificial anodes of AL-Zn-In system alloy GB/T 4950 Sacrificial anode of Zn-Al-Cd alloy GB/T 4951 Chemical analysis methods for sacrificial anodes of Zn-Al-Cd alloy GB/T 4956 Non-magnetic coatings on magnetic substrates - Measurement of coating thickness - Magnetic method GB/T 5210 Paints and varnishes - Pull-off test for adhesion GB/T 6462 Metallic and oxide coatings - Measurement of coating thickness - Microscopical method GB 6514 Safety code for painting - Safety, ventilation and air clean-up for painting process GB/T 7387 Technical requirements for marine reference electrode GB/T 7388 Technical requirements for marine auxiliary anode GB/T 7788 General specification for anodic shield coating of ship and ocean engineering GB 8923 Rust grades and preparation grades of steel surfaces before application of paints and related products GB/T 9274 Paints and varnishes - Determination of resistance to liquids GB/T 10610 Geometrical product specifications (GPS) - Surface texture: Profile method - Rules and procedures for the assessment of surface texture GB 11375 Metallic and other inorganic coatings - Thermal spraying - Safe practices GB/T 12608 Thermal spraying - Wires，rods and cords for flame and arc spraying - Classification and technical supply condition GB 12942 Safety code for painting - Technical requirements of safety for working in confined spaces GB/T 13288 The assessment of profile grades of steel surface before application of paint and related products - Comparator GB/T 13748 Chemical analysis methods of magnesium and magnesium alloys GB/T 17731 Magnesium alloy sacrificial anode GB/T 17848 Test methods for electrochemical properties of sacrificial anodes GB/T 17850.1 Preparation of steel substrates before application of paints and related products - Specifications for non-metallic blast-cleaning abrasives - General introduction and classification GB/T 18570.3 Preparation of steel substrates before application of paints and related products - Tests for the assessment of surface cleanliness - Part 3: Assessment of dust on steel surface prepared for painting (pressure-sensitive tape method) GB/T 18570.6 Preparation of steel substrates before application of paints and related products - Tests for the assessment of surface cleanliness - Part 6: Extraction of soluble contaminants for analysis - The Bresle method GB/T 18570.10 Preparation of steel substrates before application of paints and related products - Tests for the assessment of surface cleanliness - Part 10: Field method for the titrimetric determination of water-soluble chloride GB/T 18838.1 Preparation of steel substrates before application of paints and related products - Specifications for metallic blast-cleaning abrasives - General introduction and classification GB/T 19824 Thermal spraying - Approval testing of thermal sprayers ISO 16276-1 Corrosion protection of steel structures by protective paint systems - Assessment of, and acceptance criteria for, the adhesion/cohesion (fracture strength) of a coating - Part 1: Pull-off testing 3 Terms and definitions For the purposes of this standard, the following terms and definitions apply. 3.1 offshore wind farm power station constructed in a marine environment, consisting of a batch of wind turbine generator systems or groups of wind turbine generator systems

Contents of NB/T 31006-2011

Foreword II 1 Scope 2 Normative references 3 Terms and definitions 4 General 5 Anticorrosion measures 6 Anticorrosion requirements 7 Test and acceptance Annex A (Informative) Calculation of dew point Annex B (Informative) Calculation of common protection current density of uncoated steel and protection current density of coated steel Annex C (Informative) Calculation formulae of cathodic protection design Annex D (Informative) Test method for adhesive strength of thermal spraying coat