康民署樹木組西環工業意外

8月18日

當日上午，兩名香港西樹木組的員工配戴合適的安全裝備，在西營盤水街及第三街交界路段登上升降台修剪樹木，期間升降台墜下。兩名人員獲救送院，其中女技工證實死亡，另外一名男技工留院治療。

康文署指，考慮到處理公積金等需時較長，故建議先向庫務署申請，以公積金等預支死亡恩恤金，以應付家屬燃眉之急，強調預支死亡恩恤金並非原意。

康文署指，考慮到處理公積金等需時較長，故建議先向庫務署申請，以公積金等預支死亡恩恤金，以應付家屬燃眉之急，強調預支死亡恩恤金並非原意。

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view from another angle, the break point cross section is relatively clean or sharp-cut. It is deduced the point of action or force is pretty pinpoint

the breaking point is from bottom to top. It seems to be a tearing force. The point in red circles is last breaking point

knuckle boom crane:

possible that there is downward force indicated by the arrow. When and where did this happen?

公開大學交通意外重組講師盧覺強表示，意外原因疑是吊臂鉸位金屬組件(?)折斷，以時速31公里急墜，如同鐵鎚猛擊吊臂，斗上工人若頭部撞向硬物，可產生138磅撞擊力，頭骨碎裂，他認為防患於未然最重要，當局應定期檢查及維修，以確保工人安全。

~~one very unlikely hypothesis, the two pistons are extending at the same time, and the pillar breaks at the weakest point.~~

The two pistons near the breaking point seems intact, and working properly. The related endpoint ring bearings are intact

it is more likely that:

a) operating at much higher load (200kg) than specified

b) metal fatigue (金屬疲勞) of the rectangular boom tube

c) a repeated degrading process, NOT by an large impact impulse force

it leaves highly suspicious why such defect is not sorted out in periodic maintenance by EMSD

21/9/2021

至於該宗奪命意外成因至今仍成謎，事主家人曾向升降台意大利廠商BENELLI發信查詢，獲回覆指相信搖臂曾燒焊方法加裝鐵枝，斷開位置剛好發生在燒焊位置末端，改裝加上長年累月損耗不斷惡化而無人發現，疑是導致慘劇主因。

　　不過，康文署指根據記錄，康文署在接收肇事升降台車後，其機械搖臂均沒有進行任何的額外加固改裝，且一直由合資格外判承辦商負責保養及維修，過去一年沒有故障記錄，事發前亦無收到員工反映使用升降台時出現問題；意外後署方已暫停使用所有部門的升降台車。

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Scythians 斯泰基塞種西古提人

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