司钻检查新大绳的快绳头，如有任何损伤或缺陷，就用液压切绳器把它切掉。
The driller checks the end of the new drilling line for damage, and cut off any defective section by using of a hydraulic line cutter.
用切绳器把大绳割断之前，司钻一定要把做切割记号的两边用铁丝或打包带绑好。
The driller ensures that the drilling line is wrapped with the soft wire or tape at both sides of the mark before cutting the drilling line with the hydraulic line cutter.
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