Risk source point: The manual chain hoist hoisting personnel is unsafe and stands at the position where the steel pipe may fall.
The hoisting steel pipe is slanted downward, and is struck by steel pipes, causing casualties.
Hand chain block hoisting personnel stand on the side of the steel pipe to direct and operate.
1. The manual hoist hoisting personnel stand under the hoisting object;
2. The person puts the hand, foot, head or other parts of the body deep into the position where it is pushed and dropped by the lifting object;
3. All personnel of the manual hoist lifting yard are engaged in other construction operations.