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RO2017_01-Slutrapport-Lemnhult

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RO 2017:01<br />

1.14 Organisations- och ledningsfrågor................................................................... 82<br />

1.14.1 Vestas Wind Systems A/S organisation och uppföljning av<br />

leverantörer ......................................................................................... 82<br />

1.14.2 Verksamhetsutövaren .......................................................................... 84<br />

2. ANALYS ......................................................................................................... 85<br />

2.1 Grundläggande aspekter på haveriet ................................................................ 85<br />

2.2 Design och konstruktion .................................................................................. 87<br />

2.3 Orsaken till för låg förspänningskraft .............................................................. 89<br />

2.3.1 Tornskruvar och muttrar ..................................................................... 91<br />

2.3.2 Smörjmedlet ........................................................................................ 92<br />

2.3.3 Installation och service (Vad påverkade tornet under installation och<br />

service?) .............................................................................................. 94<br />

2.4 Lösa skruvar .................................................................................................... 97<br />

2.5 Myndigheternas kontroller av vindkraftverket ................................................ 97<br />

3. UTLÅTANDE ............................................................................................... 100<br />

3.1 Utredningsresultat .......................................................................................... 100<br />

3.2 Orsaker till olyckan ....................................................................................... 101<br />

4. VIDTAGNA ÅTGÄRDER ........................................................................... 102<br />

5. SÄKERHETSREKOMMENDATIONER .................................................... 103<br />

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