Offshore wind farms : Successful corrosion protection and effective quality management / Peter Kronborg in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 33, N° 12 (12/2016)  

[article]  inJOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL) > Vol. 33, N° 12 (12/2016) . - p. 26-33 Titre : Offshore wind farms : Successful corrosion protection and effective quality management Type de document : texte imprimé Auteurs : Peter Kronborg, Auteur Année de publication : 2017 Article en page(s) : p. 26-33 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acier L'acier est un alliage métallique utilisé dans les domaines de la construction métallique et de la construction mécanique. L'acier est constitué d'au moins deux éléments, le fer, très majoritaire, et le carbone, dans des proportions comprises entre 0,02 % et 2 % en masse1. C'est essentiellement la teneur en carbone qui confère à l'alliage les propriétés du métal qu'on appelle "acier". Il existe d’autres métaux à base de fer qui ne sont pas des aciers comme les fontes et les ferronickels par exemple. Anticorrosifs Anticorrosion Eoliennes -- Revêtements protecteurs Epoxydes Marines (peinture) Métaux -- Revêtements protecteurs Polyuréthanes Revêtements -- Détérioration:Peinture -- Détérioration Index. décimale : 667.9 Revêtements et enduits Résumé : Following an uncertain start, the present offshore coatings systems for wind farms have shown fine durability against the aggressive marine environment. In this article, positive features from the first wind farms with more than 15 years of service are described, as is the importance of quality management. Note de contenu : - THE FIRST EXPERIENCE - LATER AND PRESENT PAINT SYSTEMS : Jackets for substations and external TPs - The interiors of TPs and interiors and exteriors of MPs - The railings - The appurtenances - QUALITY CONTROL OF STEEL AND SURFACE TREATMENT ON WIND FAMRS - DEFECTS : Paint errors - Insufficient pre-treatment of welds and edges - Mounting of new accessories - Flaking - Grinding sparks - Cracking - DRY FILM THICKNESS MEASUREMENTS - CONTROL OF PAINTING OPERATIONS FIGURES : 1. Offshore wind turbine construction showing the tower, transition piece (TP), transition piece cavity and the monopile (MP) which is the underwater support of the tower - 2. At the Horns Rev 1 (HR1) facility, pinpoint corrosion is noted on TPs painted with the lean two-coat epoxy system - 3. Poorly ground ceramic extenders combined with a low DFT render a coating film permeable - 4. This image shows a decommissioned TP from Yttre Stengrund Wind Farm, Baltic Sea, Sweden, after more than 15 years of service. The splash zone area has been attacked by ice, other impacts and general wear. The area above the splash zone is in fairly good condition. The brackish, low-saline water and the cold climate of the Baltic Sea may have contributed to the lesser corrosion - 5. 5 (left): The two-coat epoxy system at 1,000-1,100 μm DFT on the last five of the HR1 TPs has shown good and lasting resistance, apart from damage caused by impact from supply boats, and the protection remains intact today. Fig. 6 (right): This photo shows the corrosion attacks in 2015 on TPs coated with the lean 350 μm permeable coating system - 7. This image shows an offshore transformer station. Two typical faults in the surface treatment process that initiate corrosion attacks are noted. The red circles show the lack of rounding of edges (chamfering) on part of the steel bar. The blue circle shows a poorly mounted and painted light accessory after installation of the station. The intact ventilation duct on the left side of the photo has been mounted correctly during the manufacture of the station - 8. - TABLES : 1. Paint system for jackets on TPs - 2. Revised paint system for jackets on TPs - 3. The flaking of the topcoat and the penultimate intermediate coat on this boat landing was caused by aluminum dust originating from an adjacent thermal spray application during construction and from exceeding recoating intervals - 9. The flaking of the topcoat and the penultimate intermediate coat on this boat landing was caused by aluminum dust originating from an adjacent thermal spray application during construction and from exceeding recoating intervals En ligne : http://www.paintsquare.com/archive/?fuseaction=view&articleid=5972 Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28379 [article]

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