Inspection requirements for wind turbines

Saatja: Richard Saarman Saatmisaeg: 8. detsember 2016. a. 9:55 Adressaat: '[email protected]' Teema: inspection requirements for wind turbines Your: 06.12.2016 Our: 08.12.2016 No 14-1/16-1806-002 Dear Sir The wind turbines mechanical parts must be maintained and inspected according to manufacturer guidelines. In case there is personnel lifting equipment for turbine maintenance it must be inspected visually with 2 years interval first 10 years, after that yearly inspection is required. Regarding technical tests e.g. load test the intervals is 4 year not depending on the year putting lift into service. The Inspection must be done by accredited and insured inspection body (like Inspecta Estonia O� or Tehnoaudit O� in Estonia). The electrical installation of the turbine is subject to inspection before it is put into service (inspection before use) and in after it has been put into service (regular inspections). Intervals of regular inspection depends from technical parameters of electrical installation and are 3, 5, 10 or 15 years (typical interval for electrical installation of the turbine is 10 or 15 years). The inspection must be done by accredited and insured inspection body (24 bodies at present in Estonia). Best Regards, Richard Saarman Chief Specialist +372 667 2175 | [email protected] | www.tja.ee Technical Regulatory Authority S�le 23A, 10614 Tallinn, Estonia __________________________ Youname: Are Kaspersen / DNV GL Contact_info: [email protected] Requested_information: Dear Sirs,I need information about inspection requirements for wind turbines. What are the required inspections, and what are the intervals of such inspections?