Blade Inspection, Damage and repair forum 2016


Forum Day 1: Monday 10 October 2016

Delve into the latest inspection, damage standardisation and add-on solutions to promptly prevent AEP loss and extend your blades lifetime 


Registration And Morning Refreshments


Chair’s Welcome And Opening Remarks

Tony Lyon, Head of Renewables O&M, Centrica



Preventative And Proactive Blade Inspection Strategies For Gelcoat Wear Degradation Damages

  • Benefits of a structured approach to successfully monitor, identify and intervene on gealcoat wear damages 
  • How do we classify such damages, and subsequently plan our next move? 
  • Building a know-how for the maintenance personnel for a more effective onsite inspection 
  • Achieving an extension of the average blade lifetime 

Gian Luca Teodori, Head Of Maintenance Operations, ERG Renew


How To Create The Optimal Maintenance And Inspection Strategy To Minimise OPEX

  • The impact of effective blade inspection and maintenance planning on wind farm performance 

  • Analysing the importance of an accurate cost-benefit analysis and technology investment at an early stage

  • Looking at the bigger picture: long-term ideas and strategies around UV technology and drones

  • Accessing the blade onshore and offshore: how to balance costs, health and safety and downtime 

Rui Menenes, O&M Area Manager, IberWind


Improving The Quality Of The Repair Process By Learning What Is Really Happening On And Under The Blade Surface

  • The “Human Factor”: how visual inspections can help with assessing the real condition of the blade but also limit a true assessment with a focus on: speed of working and accuracy; visual environment; training of technicians  

  • How can UV technology help cure damages quicker? 

  • What are the limitations of UV-curable resins during O&M activities?

  • Using non-destructive testing (NDT) to counteract blade flaws

If you are interested in joining this session, please contact Raihan Chowdhury at or Heather Smith at


Networking Break And Morning Refreshments 


How Powerful Asset Management Solution Will Help You Make Decisions To Reduce O&M Costs

  • Why are traditional inspections, accomplished from the ground, not enough anymore?

  • Performance of drones in strong winds and difficult weather conditions

  • Integration of data analysis systems and inspection services in processing photos and data in order to categorise damages and prioritise maintenance

  • What are the regulatory policies related to the use of UAVs for inspections in Europe?

  • What is the cost of inspection when investing in this technology?

  • How do drones reduce downtime and ease the access process?

Michael McQueenie, Business Development Manager - Renewables, Cyberhawk Innovations 


Baillie and Sheringham Shoal Wind Farm Case Studies: A Utility’s Perspective On How To Minimise Losses And Delays Through Simple And Systematic Blade Inspections 

  • Overcoming access challenges offshore in order to improve blade performance 
  • How to minimise losses and avoid unscheduled WTG downtime due to adverse weather conditions 
  • Maximising the use of personnel on site for more cost-effective inspections 
  • Quality assurance: which standards are we working towards or do we follow? 

Michael Pedersen, Senior Blade Engineer, Statkraft 


Networking Lunch 



What Is The Most Cost And Time Effective Strategy To Inspect Blades?

By the beginning of 2015, there were nearly 270,000 individual wind turbines operating globally. The 800,000+ blades spinning on these turbines are battered by the elements during operation and require maintenance and repair. For this reason, blade inspections are becoming more and more important and traditional strategies with inspections accomplished from the ground are being complimented by new approaches which have been developed including UAVs, telescope, rope access, and the use of helicopters. During this panel, we will attempt to bring a fresh approach to blade inspection, and identify which technologies makes more economic sense, but also what is the long-term view to ensure reliability based on image interpretation. 

Participants include:

Roman Sobottka, Head Of Blade Service, Nordex
Michael Pedersen, Senior Blade Engineer, Statkraft



Quantifying Leading Edge Roughness (LER), Its Impact On AEP And How To Reduce This Influence On Blade Performance

  • Quantifying and categorizing LER from an aerodynamic perspective
  • Wind tunnel tests and full scale detailed wind turbine tests to quantify the impact of LER
  • How to reduce the influence of LER for a significant performance improvement

Christian Bak, Senior Scientist, DTU


Progression On Counteracting Leading Edge Erosion (LEE) Through Tests And Condition Monitoring

  • How to reduce the LEE’s impact on cost of energy through condition monitoring

  • Predicting the lifetime performance of leading edge protection or repair

  • The importance of quantifying the impact on yield

  • Development of standards for erosion testing of blade materials and coatings

  • How to decide whether to go for coatings, tape or shells

Networking Break And Afternoon Refreshments


Eradicating Blade Downtime By Promptly Detecting Lightning Strikes

  • Real effectiveness of lightning protection systems in avoiding downtime

  • How do you avoid and fix LSP damages? 
  • What happens when rotors become larger and lightning strikes more frequently?  
  • Properly maintaining the lightning protection systems to ensure their reliability

  • How to predict the randomness of lightning strikes and prevent failures

Kim Bertelsen, CEO, Founder & Owner, Global Lightning Protection Services A/S


Blades Are Not Fit-And-Forget: Creating Global Standards For Blade Repairs In Order To Provide Real Guarantees To Utilities

Damage can occur in many ways as blades are subject to erosion, lightning strikes, salt, sand, rain and ice effects that may reduce their efficiency and become very costly. By creating one common approved standard inspection approach, utilities would be able to carry out their O&M activities in a more timely and cost-effective manner. 



An Industry’s Effort: Practical Steps Towards The Categorisation Of Damages And Defects

When it comes to blade performance, it is important to focus on more than purely exploiting energy from them. It rather means having a close look at what made a blade under perform, spot defects and damages due to the external environment, looking at composite materials, and mistakes made during the manufacturing phase. It also means finding an easy, quick and cost-effective way for utilities to take action and avoid losses. With a lack of standardisation in the way that the industry categorises such defects and damages, the process becomes more complicated and time is wasted. This panel aims to bring key stakeholders together to take practical steps towards a global categorisation approach.

Panellists include:

Pasquale Braione, Blade Operation Manager, Vestas
Birgit Junker, Fleet Manager, E.ON
Gian Luca Teodori, Head Of Maintenance Operations, ERG Renew


Chair’s Closing Remarks


Drinks Reception


Dinner organised by Windpower Monthly