Small and medium-sized machinery operator (Basic knowledge of safety operation for construction workers)

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II. Basic Knowledge of Safe Operation
1. The distance between all small and medium-sized machinery and equipment and the switch box must not exceed 3 meters; each piece of equipment should implement the "one machine, one switch, one leakage protector, one box" system.
2. Operators must follow the "cleaning, tightening, lubricating, adjusting, and anti-corrosion" five-step operation requirements to regularly maintain and service the equipment.
3. When the equipment is in operation, the operator must not leave the post without permission and must always monitor the equipment's operation. If any abnormal conditions are detected, the equipment should be shut down immediately. Unauthorized repairs are prohibited; professional maintenance personnel should be notified for inspection and repair.
4. When the hopper of the mixer is raised, no one is allowed to stay or pass under it. If repairs or cleaning under the hopper are necessary, the hopper should be raised and locked with a double safety hook or safety pin before proceeding.
5. When feeding the concrete mixer, it is strictly forbidden to insert one's head or hand into the gap between the hopper and the frame to observe or probe the feeding conditions. During operation, it is strictly forbidden to use hands or tools to dig or discharge materials from the mixing drum.
6. When mixing with a mortar mixer, it is strictly forbidden to stand on the grating of the mixer for loading operations. During operation, it is strictly forbidden to insert tools such as shovels into the machine to dig or discharge materials to prevent accidents.
7. After the mixer stops working, it should be cleaned, the safety pin should be inserted, and the safety hook should be properly hung.
8. During cold seasons, after the mixer has finished working, the water in the water pump and storage tank must be drained to prevent equipment damage from freezing.
9. Before using handheld electric tools, check that the casing, handles, and cable cords and plugs are free of cracks, damage, and ensure that the switch operates normally and the protective grounding connection is secure.
10. The rubber cord of handheld electric tools should not be extended. When the power source is far from the work area, a mobile switch box should be used.
11. When using handheld electric tools, operators must wear protective equipment as required.
12. The cable length of a vibrator should not exceed 30 meters. It should not be dragged over steel bars to prevent damage or leakage. Operators should wear rubber-soled shoes (boots) and insulated gloves.