Vestas倒塔事故初步调查公布：塔筒之间的法兰连接失效

　　相关新闻：
　　Vestas对上个月瑞典V112倒塔的调查主要集中在机组第一和第二节塔筒之间的连接部分。
　　该公司表示这次圣诞节前的倒塔事故是“由于第一和第二节塔筒之间的法兰连接失效导致的。初步的测试结果表明螺栓质量没有问题，下一步调查将主要针对螺栓预紧流程。”
　　Vestas正在执行一项计划，来对Lemnhult场区内其他机组的塔筒连接进行检查，这些机组已提前恢复运行。
　　2015年12月24日早晨，瑞典Lemnhult风电场的一台V112-3MW机型倒塔，此次事故中并未出现人员伤亡。
　　原文
　　Bolting failures in Vestas spotlight
　　Vestas investigations into last month's failure of a V112 wind turbine in Sweden are focused on the join between the first and second tower sections.
　　The Danish manufacturer said the collapse just before Christmas "was caused by a failure in the bolted flange between tower sections one and two:".
　　It added: "Preliminary test results indicate that there is not a bolt quality issue. The ongoing investigation is focused on the bolt pre-tensioning procedure.?"
　　The 3MW machine failed on 24 December at Stena Renewable's 96MW Lemnhult wind farm. No injuries or other damage occurred as a result.
　　Vestas is currently “executing a plan to inspect the tower connections at other turbines at the Lemnhult site prior to returning the wind farm to full operation”.
　　The wind farm was built staring in 2012 with full operations kicking off in 2013.