Vestas倒塔事故初步調(diào)查公布：塔筒之間的法蘭連接失效

　　相關(guān)新聞：
　　Vestas對上個月瑞典V112倒塔的調(diào)查主要集中在機(jī)組第一和第二節(jié)塔筒之間的連接部分。
　　該公司表示這次圣誕節(jié)前的倒塔事故是“由于第一和第二節(jié)塔筒之間的法蘭連接失效導(dǎo)致的。初步的測試結(jié)果表明螺栓質(zhì)量沒有問題，下一步調(diào)查將主要針對螺栓預(yù)緊流程。”
　　Vestas正在執(zhí)行一項計劃，來對Lemnhult場區(qū)內(nèi)其他機(jī)組的塔筒連接進(jìn)行檢查，這些機(jī)組已提前恢復(fù)運(yùn)行。
　　2015年12月24日早晨，瑞典Lemnhult風(fēng)電場的一臺V112-3MW機(jī)型倒塔，此次事故中并未出現(xiàn)人員傷亡。
　　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.