Offshore Wind Turbine OM through Advanced Service Technology Mahesh Morjaria, Robert Grimley and Mark Johnson GE Ene

1. Offshore Wind Turbine O&M through Advanced Service Technology Mahesh Morjaria, Robert Grimley and Mark Johnson GE EnergyThe European Wind Energy Conference 2004November 22 - 26, 2004London, UK  European Wind Energy Association Paper European Wind Energy Association Paper

2. Show variability by making different assumptions about GB reliabilty � Mahesh. Impact on production due to 1% unavailability -> During High Wind x � During low Wind y Service Accessibility Show variability by making different assumptions about GB reliabilty � Mahesh. Impact on production due to 1% unavailability -> During High Wind x � During low Wind y Service Accessibility

3. O&M Cost Variability Driven By Product Reliability

4. Production Impact Due To Unplanned Events is Also Significant Graphs qualitatively demonstrates impact on production due to on-shore, off-shore, low and high wind and poor access (weather related)Graphs qualitatively demonstrates impact on production due to on-shore, off-shore, low and high wind and poor access (weather related)

5. How is GE addressingthis challenge? European Wind Energy Association Paper European Wind Energy Association Paper

7. Service Technologies for Effective Offshore O&M

8. Offshore Product Reliability (Prevention) Design off-shore turbine to with very high availability (>99%), service flexibility and service ease Utilize Six-Sigma �Design for Reliability� methodology Extended FMEA approach to drive design for serviceability into new products Physics-based Reliability Models to understand true design and operational limits Utilize GE Best Practices from Gas Turbine and Appliance Services for Offshore Turbine applications Redundancy of functions Automation of Diagnostics and Self Correcting Features Component and System Reliability Modeling Advanced Controls to minimize wear and tear on components and maximize performance Design for serviceability practices and guidelines including component redundancy and ease of service Design for Rapid Change-outs of ComponentsDesign off-shore turbine to with very high availability (>99%), service flexibility and service ease Utilize Six-Sigma �Design for Reliability� methodology Extended FMEA approach to drive design for serviceability into new products Physics-based Reliability Models to understand true design and operational limits Utilize GE Best Practices from Gas Turbine and Appliance Services for Offshore Turbine applications Redundancy of functions Automation of Diagnostics and Self Correcting Features Component and System Reliability Modeling Advanced Controls to minimize wear and tear on components and maximize performance Design for serviceability practices and guidelines including component redundancy and ease of service Design for Rapid Change-outs of Components

9. Offshore Product / Customer Support Customer Support Centers � Provides Global Reach � Expert Response 24/7 Remote Operations, Monitoring and Diagnostics Technical (1st, 2nd, 3rd Level) Support Performance/Product Optimization Contractual Services/Warranty Mgmt Automated Fault Notification & Expertise-based Rapid Fault Resolution Global Fleet Wide Turbine Operational and Service Data Base Digitized Work Flow Management, Problem Escalation Process and Coordination With Field Service Team Multi-lingual Support Condition-based maintenance systems for key turbine components (ex: Drive Train, Rotor Blade, etc) including sensors, algorithms for data processing, expert rule sets to assess condition and integration with existing SCADA system �Smart� Reliability-Based Preventive Maintenance Shift Planned Maintenance to Low Wind Period Use Reliability Models to Drive Maintenance Intervals for Optimal Performance Use Site-specific Maintenance Factors to Assess Damage Accumulation Customer Support Centers � Provides Global Reach � Expert Response 24/7 Remote Operations, Monitoring and Diagnostics Technical (1st, 2nd, 3rd Level) Support Performance/Product Optimization Contractual Services/Warranty Mgmt Automated Fault Notification & Expertise-based Rapid Fault Resolution Global Fleet Wide Turbine Operational and Service Data Base Digitized Work Flow Management, Problem Escalation Process and Coordination With Field Service Team Multi-lingual Support Condition-based maintenance systems for key turbine components (ex: Drive Train, Rotor Blade, etc) including sensors, algorithms for data processing, expert rule sets to assess condition and integration with existing SCADA system �Smart� Reliability-Based Preventive Maintenance Shift Planned Maintenance to Low Wind Period Use Reliability Models to Drive Maintenance Intervals for Optimal Performance Use Site-specific Maintenance Factors to Assess Damage Accumulation

10. �Smart� Reliability-Based Preventive Maintenance Strategy  Using reliability information to drive our maintenance procedures help us make the most of the plantUsing reliability information to drive our maintenance procedures help us make the most of the plant

11. Offshore Field Services Offshore Access Systems No single solution. Must address site and wind farm conditions Significant availability driverOffshore Access Systems No single solution. Must address site and wind farm conditions Significant availability driver

12. Offshore Product Continuous Improvement Company Wide Reliability Management Program enables GE to improve the product continuously � focus on the fleet wide problemsCompany Wide Reliability Management Program enables GE to improve the product continuously � focus on the fleet wide problems

13. European Wind Energy Association Paper European Wind Energy Association Paper