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Wind Energy: Components Certification Helps Reduce Costs

Due to increasing international competition, manufacturers of wind turbines are under pressure when it comes to costs

Wind Energy: Components Certification Helps Reduce CostsWind Energy: Components Certification Helps Reduce Costs

The certification process in particular can offer substantial savings potential. Detailed knowledge about certification processes and about their influence on each other can be used as a benefit.

FFor market access of wind turbines it is important that component certificates issued by diverse certification bodies are recognized by the body which carries out type certification. “The component certificate can then be easily integrated into type certification. No additional detailed reviews of the components must be carried out, “said Benjamin Jendrosch, Product Manager Wind Energy at TÜV Rheinland on the occasion of the 5th NRW Wind Energy Day in Dusseldorf. Jendrosch added, „In practice, this leads to a significant reduction in cost for type certification.”

Partners who apply the method described below enjoy many advantages: Manufacturers benefit from individual components having been inspected and certified by an independent and accredited body in the basic manufacturing criteria and specification features prior to the start of any wind energy project. As a result, the process of type certification becomes faster and cheaper. Components manufacturers, in turn, benefit from significantly improved market opportunities. Furthermore, the confidential treatment of documents regarding new developments is guaranteed as such documents are made available exclusively to the certifier.

Before installation, wind turbines undergo various certification processes. Type and components certifications are the most important. In the type certification process, the design of the complete wind turbine and all included components such as towers, blades and gearboxes are inspected. Components certification examines the quality of individual principal components based on predefined load assumptions. This includes the inspection of design calculations, manufacturing facilities and processes and prototype testing. The certifying body performing type certification verifies whether the evaluation of components is sufficient for recognition. “All documents necessary for components certification should be made available by the applicant,” recommends Jendrosch. Mandated requirements to achieve the appropriate recognition of certificates of components must be met. Certifying bodies issuing components certification should be accredited by a member of the multilateral agreement of the EA, IAF and ILAC. In Germany, for example, it is the German Accreditation Body (DAkkS GmbH) which fulfills these prerequisites. Furthermore, all components certification documentation must be fully submitted to the certifying body performing type certification. Finally the specification of the interfaces between each component and the rest of the wind turbine must be clearly defined. If all of these requirements are fulfilled, awarded components certification can be simply integrated into the type certification, shortening the overall certification process.

TÜV Rheinland offers a comprehensive range of services for manufacturers, operators, investors and insurance companies within the wind energy industry. The company supports customers worldwide conducting risk assessments and damage analysis, providing reports and measurements and certification of wind turbines and wind energy projects. TÜV Rheinland is an approved certification body for the type and components certifications of on- and offshore wind farms according to national and international standards.

The company offers important services such as site analysis and subsoil examinations, manufacturer surveillance, coordination of static and structural analysis as well as quality assurance and quality control. In addition, TÜV Rheinland leads in final acceptance and periodic inspections as well as construction supervision. TÜV Rheinland monitoring services, known as “Marine Warranty Survey Services” provide support when transporting and installing offshore wind turbines and transformer platforms. The company also successfully implements the principal of neutral monitoring in providing quality assurance of global supply chains.

Posted by Trevor Sievert, Online Editorial Journalist / By TÜV NORD GRUPPE Staff
www.tuev-nord.de /...

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