NEW GUIDELINE FOR OFFSHORE WIND TURBINES

2013-02-07, Mike Wöbbeking

Content

2013-02-07NEW GUIDELINE FOR OFFSHORE WIND TURBINES

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1. GL Renewables Certification – who we are

2. Challenges offshore

3. Offshore Guideline 2012

Germanischer Lloyd (GL)

2013-02-07NEW GUIDELINE FOR OFFSHORE WIND TURBINES

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• technical surveillancesociety

• founded 1867

• renewables since 1977

• own rules and guidelines

• ~7000 persons worldwide

• ~230 locations

• ~80 countries

Geographical Reach of GL Renewables

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>900 staff, in 43 locations, across 23 countries

Vancouver

Ottawa

Portland

San Diego

Montreal

Peterborough

Austin

Monterrey

Porto Alegre

Beijing

Tokyo

Shanghai

Mumbai

Bangalore

Newcastle

Melbourne

Wellington

HeerenveenSint Maarten Kaiser-Wilhelm- Koog

BristolDublinParis

Izmir

CopenhagenHinnerupOldenburgHamburgWarsaw

Lisbon Barcelona ZaragozaMadrid

Imola

Glasgow

LondonSlough

GL Renewables Certification

• local offices in 6 countries

• Present in three major regions: Americas, Asia, Europe

• ~185 staff worldwide

Challenges in the offshore wind industry• new industry with few experienced

partners particular in manufacturing • harsh weather conditions, challenging

environmental conditions• growing number and increase in

number of size of projects • multiple partners in contracts and

projects• scarce expert resources• availability of grid connection• CoE (Cost of Energy)• HSE (Health, Safety & Environment)• …

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Source: DOTI

Challenges in the offshore wind industry• new industry with few experienced

partners particular in manufacturing • harsh weather conditions, challenging

environmental conditions• growing number and increase in

number of size of projects • multiple partners in contracts and

projects• scarce expert resources• availability of grid connection• CoE (Cost of Energy)• HSE (Health, Safety & Environment)• …

2013-02-07NEW GUIDELINE FOR OFFSHORE WIND TURBINES

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Source: DOTI

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December 2012

New Offshore Guideline

• Latest developments in offshore industry• Latest testing conditions, safety systems

and quality requirements• Review and testing of control systems due

to increased size of turbines and mitigation of loads

• Novel analysis methods for piles under cyclic axial loading considering the high frequency of tensial cyclic loads

• Requirements for floating wind turbines regarding stability and mooring safety requirements are addressed

• And more

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NEW: Released in December 2012

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20122005

Same look andstructure

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New content

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New content

More delicious

2013-02-07NEW GUIDELINE FOR OFFSHORE WIND TURBINES

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Type Certification

• The Guideline for Offshore Wind Turbines was improved to fully comply with the (onshore) Guideline for Wind Turbines of 2010 (GL 2010 -> GL 2012) and to cover IEC 61400-3 / IEC 61400-1

• Type Certification especially for offshore wind turbines, floating and fixed• D-Design assessment included as a "feasibility check" prior to the

updated C-Design Assessment for prototypes• A- and B- Type Offshore Certificate introduced

(B-type allowing for non-safety relevant open items)• Component certification for all major parts included• Improvement of section regarding assessment of Implementation of the

design-related requirements in Production and Erection (IPE) and introduction of Critical Manufacturing Processes (CMP)

• Improved section ‘Test within the scope of the design assessment’. The section now gives more details, the scope is extended

• Improved section ‘Load measurements’. Additional requirements were added for measurements at offshore wind turbines and floating wind turbines

Implementation of Design Requirements

in Production and Erection

Implementation of Design Requirements

in Production and Erection

Design Assessment

Design Assessment

Prototype Testing

Prototype Testing

Quality Managemen

t

Quality Managemen

t

Type Certificate

Type Certificate

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Project Certification

• A- and B- Project Certificate introduced (B-type allowing for non-safety relevant open items)

• Site design conditions and design basis requirements reviewed and improved

• Site-specific design requirements improved (load analysis, foundation design, electrical installation)

• Surveillance during manufacture, transport and installation reviewed. Surveillance for 25% of the turbines required for project certification

• Commissioning updated, witnessing for 10% of the turbines is necessary

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Floating Wind Turbines

• Different concepts of floating wind turbines introduced including their stability principles

• Prototype testing of floating wind turbines introduced

• Safety system requirements extended to floating (tightness and draft, position, mooring system, motions monitoring)

• Freeboard, intact and damage stability requirements have been introduced. Requirements fulfil international codes

• Special load cases for floating turbines. A load case group DLC 10.x is introduced to consider damage stability and mooring line loss situations

• Consideration of additional parameters in control design (e.g. body movement)• Section with requirements for floating structures, including mooring equipment

requirements• Requirements for towing of floating wind turbines are included

Source: www.siemens.com

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Turbine• Requirements introduced for external power supply based

on project experience • Requirements and classification of materials improved• Load case definitions improved and simplified• New list ‘Load assessment relevant data’, to support

design process• New appendix table ‘List of protection functions (example)’• Section "Drive Train Dynamics" included• Guidance on specification of synthetic SN-curves• Requirements for corrosion protection extended• Improved section ‘Automatic ice

detection’• New sections including heli-hoist

platforms, aviation obstruction lights and met masts

Sou

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Transport and Installation• Substantially modified to cover all

operations starting from load-out and transportation till the lifting operations and installation procedures including vessel positioning

• Harmonized with other GL rules in offshore sector

• The components addressed are: • Load-out (floating, lifted, skidded, by trailers, grounded)• Transportation, including sea-fastening and towing (barges, floating)• Lifting• Installation of jackets, piles and topside structures• Vessel positioning• Pipe / cable laying

Mike Woebbeking

Germanischer Lloyd Industrial Services GmbHRenewables Certification

Vice PresidentHead of Certification Body

Brooktorkai 1820457 Hamburg

GERMANY

Phone: +49 (0) 40 - 3 61 49 - 33 07 Fax: +49 (0) 40 - 3 61 49 - 17 20

Email: mike.woebbeking@gl-group.com www: http://www.gl-group.com/GLRenewables

Thank you very much for your attention

Please visit us at booth No. A-C60.