STEEL IS THE VITAL INGREDIENT

DILLINGER HüTTE GTS

SOLUTIONS IN STEEL FOR OFFSHORE WIND-ENERGY INSTALLATIONS

The Alpha Ventus pilot project is the world’s first offshore wind farm to advance into waters of depths of 30 m and more.

Since completion, it has supplied important knowledge needed for the further expansion of offshore wind-energy. The farm features twelve wind-turbines of the 5 MW class.

The southern group of Areva Wind M5000 turbines each stand on three-legged foundations (tripods) with edge lengths of nearly 25 m. Some 1,000 t of steel was installed for the tripod, feet, tower and nacelle of each turbine.

The other six REpower 5M wind-turbines were installed to the north, on jacket foundations. The jacket foundation is around 57 m in height, with a mass of some 320 t.

This wind farm consumed 12,800 t of steel supplied by Dillinger Hütte GTS (S355G8+N/M and S355K2+N in thicknesses up to 110 mm).

ALPHA VENTUS, THE WORLD’S FIRST HIGH SEAS WIND FARM

On March 8, 2011 the first of the foundations for the world’s future largest wind farm was installed off the coast of England, in the form of a monopile weighing 268 t. This foundation was then completed with the lifting and positioning of the transition piece. 174 further foundations have since been installed, and provide the basis for the high-output wind-energy machines (3.6 MW turbines supplied by Siemens), of which 100 have already been installed out to sea.For this project, Dillinger Hütte GTS supplied around 54,000 t of plate in grades S355J2+N, S355G9+N, S355G9+M, S355G10+N and S355ML and thicknesses of 47 to 100 mm.

London Array

AG der Dillinger Hüttenwerke GTS IndustriesMarketing MarketingD-66748 Dillingen/Saar F-59379 Dunkerque CedexPostfach 1580 BP 6317Telefon: + (49) 6831/47-34 56 Telefon: + (33) 3 28 38 40 95Fax: + (49) 6831/47-99 21 46 Fax: + (33) 3 28 29 69 12

E-Mail : info@dillinger.bizhttp://www.dillinger.de

DILLINGER HüTTE GTS

© EWE

© EWE

© Sif Group bv

© Vattenfall /Jamie Cook

© Aarsleef Bilfinger Berger Joint Venture

1704_dihd_6Seiten_Englisch_cs55.indd 1 07.05.13 10:15

OFFSHORE WIND-POWER –THE ENERGY OF THE FUTURE

DILLINGER HüTTE GTS: THE STANDARD IN OFFSHORE WIND FARMS

High waves, turbulent weather. The world’s oceans are brim full with energy. The high wind velocities constantly prevailing there, in particular, contain a highly promising energy potential which has been exploited up to now only to a very limited degree.For numerous European countries, the expansion of offshore wind-energy generation is therefore the most important element in future energy concepts.The success of this energy source is dependent to a very large extent on stable and highly durable offshore wind-tower foundations that are able to defy the hostile conditions encountered far out to sea.

Steel’s high specific load-bearing capability and durability, combined with its versatility, make it the material of choice for these offshore foundations. Its role in the generation of renewable energy achieves dual sustainable use of resources, since steel, with its excellent recyclability, is in itself a resources-conserving material.

Wind-energy installations need stable foundations to withstand the conditions found in dee-per waters. Equally, dependable partners are needed to assure trouble-free completion of major projects. Dillinger Hütte GTS, with its broad range of tailor-made products, is precisely this reliable partner: even high-tonnages can be supplied in extremely short times. It is therefore no coinci-dence that the majority of offshore wind-energy projects completed up to now have been based, irrespective of the type of steel foundation, on plate supplied by Dillinger Hütte GTS.

Walney, currently the world’s largest offshore wind farm, went into operation off the west coast of England on February 9, 2012. It consists of 102 windpower installations, each equipped with Siemens Type SWT 3.6 MW turbines, for a total farm output of 367.2 MW. The energy yielded is sufficient to supply 320,000 households with wind-generated electricity. The indi-vidual turbines are mounted on monopile foundations, each weighing around 600 t, and each with a diameter of approx. 5.50 m.

For this project, Dillinger Hütte GTS supplied some 43,900 t of plate in grades S355NL and S355ML, in thicknesses ranging from 55 to 105 mm.

Thanet, the previous largest wind farm in the world, began operation, with an output of 300 MW, off the coast of England on September 23, 2010. Thanet fea-tures one hundred Vestas V90 3.0 MW wind-turbines, for an output totalling 300 MW. Their towers also stand on monopiles consisting of steel from Dillinger Hütte GTS, with a pile diameter of some 5 m.

Dillinger Hütte GTS supplied around 46,300 t of plate for this project, in grades S355J2+N and S355ML, and in thicknesses extending from 40 to 95 mm.

BARD Offshore 1, Germany’s first commercial-scale high-seas wind farm, is under construction some 100 km off the island of Borkum. The wind-turbines are mounted on three-legged foundations, so-called tripiles. BARD Offshore 1, with eighty wind-energy installations, will have a rated output of 400 MW when inaugurated in 2013.

For this project, Dillinger Hütte GTS supplied 105,000 t of plates of grades S355G7+M, S355G8+M, S355ML, S355K2+N, S355NL, S420G1+M, S420G2+M, S420ML and S460ML in thicknesses from 10 to 120 mm.

BARD Offshore 1

Heavy plate:The backbone of

regenerative energy

Dillinger Hütte GTS: Industry’s partner for dependable solutions

Walney

Thanet

Thermomechanically rolled plate has become particularly well established in offshore applications since, in addition to an optimum combination of the mechanical properties of strength and toughness, it also assures, thanks to its low carbon equivalent, significant-ly superior conditions for welding (e.g. the reduction of preheating temperatures, or even the elimination of preheating). Here Dillinger Hütte GTS yet again sets new standards, with available plate thicknesses of above 120 mm and item weights of up to 32 t.

Tailor-made ultra-high quality

plate solutions

Plate thicknesses ranging from 6 to over 400 mm, widths of up to 5,200 mm and lengths of up to 28 m, with item weights extending up to 40 t – these are the sizes in which Dillinger Hütte GTS can produce and supply its world-leading grades of steel. But it is not only these unique dimensions, but also, and above all, the „inner“ values and good working properties which give Dillinger Hütte GTS heavy plate its outstanding reputation. Excellent weldability, assurance of maximum strength and toughness performance at low temperatures, even in the plate centre, may be mentioned here only as examples of the special, tailor-made customer requirements that Dillinger Hütte GTS plate makes possible.

Technical and commercial boundary conditions can be fixed jointly with the customer and the project participants at the early stages of a project, assuring availability of the necessary capacities, maximum logistical support and thus trouble-free implementation. Top solutions in steel, achieved equitably with the customer – this is the proud record of Dillinger Hütte GTS.

Maximum quality and safety specifications that our customers can rely on: this is the challenge we set ourselves every day. Dillinger Hütte GTS has proven its capability for meeting these maximum dependability standards throughout its many years of experience in sensitive oil and gas industry projects.

Its two rolling-mills and the orientation of all of its facilities around the production of thick heavy plates give Dillinger Hütte GTS the ability to supply large quantities of plate on time and within narrow time windows. Maximum delivery reliability and logistical support for the customer are our constant top priority. The successful completion of many extremely diverse major projects provides the definitive proof.

Service Plus: Edge preparation

Convincing customer support

Pure dependability

Reliability

An additional service provided by Dillinger Hütte GTS is individual weld preparation by means of milling, assuring extra cost-effectiveness of welding for the customer.

Edge machining is possible both on rectangular-format plates and on radius and conical plates. The most diverse range of edge geometries, even including tapers in the dimension range up to 120 mm thickness, 5,000 mm width and 25,000 mm length, can be milled with ultra-high accuracy. Tolerances of ±1 mm are achieved in length and width, ±0.5 mm for edge position and ±0.5° for the milled angle. The sandwich configuration of the milling tools, in combination with an automated tool-changing system, assure the necessary flexibility for individual edge geometries.

Just-in-time delivery of edge-machined plates is also possible on agreement. © BARD-Gruppe

© Dong Energy

© Sif Group bv

1704_dihd_6Seiten_Englisch_cs55.indd 2 07.05.13 10:15