Design Assessment Of Wind Turbine Towers
Based on IEC 61400 series: the IEC international standard for wind turbines
BUSINESS CHALLENGE
Tower structural integrity is one of the more im-portant aspects to be considered in wind turbine design. Product development teams must ask and answer essential questions such as “Will wind tur-bine tower last for the design life under daily use?” For the manufacturers of wind turbine towers, the certification by an International Recognised Cer tification Body is a must and, depending on the country, it is a mandatory requirement.
BENEFITS FOR YOUR BUSINESS
Confidence in your design - Design evaluation certificate confirms that the wind turbine tower is design and
documented in conformity with design assumptions, specific standards and other technical requirements, improving
confidence of all stakeholders in the safety and stability of the tower.
International recognition - Bureau Veritas Certification France is accredited for the certification of wind turbine type and component by COFRAC* for IEC 61400 standards. Bureau Veritas Certification France is also recognized as a certification body by IECRE. Upon request, Bureau Veritas Certification France can certify against other specific standards.
OUR APPROACH
Wind turbine tower analyses are performed by expert engineers with a strong technical expertise in wind. For each certification project, Bureau Veritas Certification France sets a project organization with a multidisciplinary background: design review, independent analyses, material expertise, and more.
Process: The certification process verifies all the tower elements taking part in the structural design:
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Standards applied;
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Materials;
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Load calculations;
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Calculation notes:
• Buckling;
• Ultimate resistance;
• Fatigue calculations;
• Door openings;
• Bolted connections;
• Eigen frequency; etc.
In addition, Bureau Veritas Certification France has developed an innovative tool to perform independent analyses on wind turbine towers according to IEC 61400-1 and Eurocodes.
*COFRAC accreditation for “Certification of Products and Services” N°5-0051, list of sites and scope available on www.cofrac.fr
SKILLS AND TOOLS
We bring decades of experience to complete your structural wind turbine challenges. Our services are delivered by highly
qualified and trained engineers performing calculations with the most appropriate and reliable software such as LMS Samtech
Samcef Wind Turbines, Abaqus, ANSYS and more. A specific software to calculate steel wind turbine towers has been
developed by Bureau Veritas Certification engineers. Calculations are performed taking into account material characteristics,
wind loads, bolted connections and all structural elements constituting wind turbine tower. The engineering team can simulate
all structural aspects of the tower – conducting linear static analyses that reveal stresses, durability based on fatigue
calculations and modal analysis.
Why Choose Bureau Veritas?
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Reputation - Created in 1828, Bureau Veritas is a global leader in Testing, Inspection and Certification, delivering high quality services to help clients meet the growing challenges of quality, safety, environmental protection and social responsibility
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Knowledge and expertise - Evaluations are performed by experienced engineers operating under a controlled quality system. Bureau Veritas Certification France’s expertise is acknowledged by the COFRAC accreditation and recognized by the IECRE.
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Global network - With more than 66,000 employees in 1,400 offices and laboratories covering 140 countries, Bureau Veritas is able to act quickly on its clients’ behalf anywhere in the world. Our inspectors will always be close to your sites, allowing for a greater reactivity and reduced transportation costs.
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Customer focus - Bureau Veritas’ core values include integrity and ethics, impartial counsel and validation, customer focus and safety at work. As a trusted partner, Bureau Veritas offers innovative solutions that go beyond simple compliance with regulations and standards, reducing risk, improving performance and promoting sustainable development.
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