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TÜV NORD to certify SG 14-222 DD

4C Offshore | Tom Russell
By: Tom Russell 29/06/2020 Siemens Gamesa Renewable Energy
 TÜV NORD has been tasked with certifying Siemens Gamesa Renewable Energy's (Siemens Gamesa) latest offshore wind turbines. With a capacity of up to 15 MW and a rotor diameter of 222 metres, the SG 14-222 DD is one of the world's largest offshore wind turbines.

TÜV NORD is to certify the turbine in accordance with the internationally recognised IECRE scheme OD 501. In combination with OD 502, the scheme is particularly suitable for the highly complex certification of offshore projects. It is scheduled for completion in 2021, prior to series production.

TÜV NORD experts assess the system design for the planned life time, which is 25 years for the SG 14-222 DD. They evaluate the complete turbine from the rotor blades to the nacelle and the tower base. In addition, the quality along the supply chain and a detailed test program will be evaluated. The experts also take into account the extreme conditions a wind turbine is exposed to in the open sea. The turbine must operate safely even in saline environment, storm surges and abnormal wind speeds. Accordingly, the SG 14-222 DD is going to be tested for the so-called "Typhoon class", which is required specifically for the Japanese and Taiwanese markets.

"We are very proud that Siemens Gamesa is relying on our expertise for this extraordinary project. The turbine makes it possible to use wind energy with a high efficiency and contributes significantly to the further progress of the energy transition,"
explained Silvio Konrad, TÜV NORD Managing Director and responsible for the energy sector.

"We have been operating successfully in the offshore wind sector for a long time and with this extraordinary project, we foster the worldwide expansion of offshore wind energy",
said Alexander Ohff, Executive Vice President of the Renewable Energy Segment at TÜV NORD.

The SG 14-222 DD wind turbine is breaking records in many ways. The rated output of the Direct Drive wind turbine is 14 MW and can be increased to 15 MW by using the Power Boost function. The rotor blades measure 108 metres each, the rotor diameter is 222 metres. A single wind turbine of this type is expected to supply electricity for around 18,000 average European households annually.

The SG 14-222 DD turbine is scheduled to be market-ready by 2024. A total of 4.34 GW of conditional orders have already been received for the product for three offshore wind projects on three continents with three customers: the 300 MW
Hai Long project in Taiwan planned by Northland Power and Yushan Energy, the 1,400 MW Sofia project in the UK planned by innogy, and the 2,640 MW Coastal Virginia Offshore Wind project in the USA, planned by Dominion Energy.

For more information on offshore wind farms worldwide, click here.


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