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国際安全衛生センタートップ > 事例研究 > Examples of Hazard Prediction Training
Drilling work
In order to correct the misalignment, a worker is widening the boltholes for securing an undercover, using a drill of the same diameter.



Various Points of Hazard
1. Widening the boltholes with a drilling machine of the same diameter may likely cause the drill to break and send the broken drill flying off.
2. The work is not secured completely. It may be sent flying off.


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