February 2012 saw SCHAAF receiving a huge order from a global leader in the high-tech shipbuilding industry to secure two platforms in Borkum and Heligoland in the North Sea. The platforms are a part of the offshore windparks HelWin and BorWin in the eastern North Sea and will be handed over to Siemens Energy.
One platform is approx. 82 m long and 56 m wide. Its skeletal structure comprises the so-called base frame and the topside that lies above the sea level. The topside is held together with 36 Multiple Stud Nut M160 MSN.
The MSN – Multiple Stud Nut is a part of the SCHAAF product upgrade. It enables torsion-free and secure fastening within a small installation space.
Simulations and field trials with in-house test facilities are carried out for installations. When the platform is aligned in position, the SCHAAF MSN – Multiple Stud Nuts are locked securely to the platform. This guarantees that the M160 screws, which are 5 m long, can hold the world’s largest high voltage DC platforms permanently and without any maintenance.