1. IEC TC 88PT 61400-5IEC 61400-5 Ed.1: Wind Turbines –Part 5: Rotor Blades • IEC TC 88 Meeting • NREL-NWTC • 11-12 March, 2010

2. Presentation Overview • PT 61400-5 history • Meetings and participation • General timeline • Technical scope/relevance • Intended audience • Committee issues • TC 88 coordination • Future work

3. PT 61400-5 History • TC 88 Meeting – October, 2008 • New work item proposal: 88/345/NP • March 6th, 2009 • NC Voting Open • March 6th through June 12th, 2009 • Results of voting circulated: 88/351/RNV • August 28th, 2009 • Work item approved • New project team convened • Team Leader: Mr. Wang Jianping (CN) • Inaugural meeting: October, 2009 – Geneva, Switzerland

4. PT5 Meetings • Meeting #1: • October 14-15, 2009 • IEC Headquarters • Geneva, Switzerland • Meeting #2: • January 13-15, 2010 • Gloria Plaza Hotel • Beijing, China

5. PT5 Participation

6. PT5 Timeline

7. PT5 Technical Scope • Blade design • Environmental conditions • Aerodynamic design • Design loads • Material requirements • Structural design • Blade manufacturing requirements • Critical processes and quality control • Tooling qualification and maintenance • Manufacturing tolerances • Calibrations • Workshop and storage environment • Final manufacturing inspection • Manufacturing and QA records • Test Methods • Blade Handling • Field Operation and Maintenance

8. 61400-5 Intended Audience • Blade designers • Turbine designers • Blade manufacturers • Field operators

9. PT5 Committee Issues • Agreement of scope • Source documents • Manufacturing methods • Style of work

10. TC 88 Coordination • 61400-1 • Design criteria • 61400-23 • Blade testing • Full scale structural • Material – coupon level • NDT • Weight and balance • Proof testing • 61400-24 • Lightning protection

11. PT5 Future Work • Continue refining sections • Based upon scope • Develop detailed text for sections • Produce CD • Planned meetings: • May, 2009: Aalborg, Denmark • September, 2009: Hohhot (Huhehot), China