Safety precautions for welders 1. Welders must undergo professional training and pass the examination before taking up their posts. Non-welders are forbidden to engage in welding operations.
2. Wear safety protection articles such as welding overalls, insulating shoes, welding gloves and protective masks during operation. Fasten your seat belt when working at height.
3. Flammable and explosive articles shall not be piled up within10m of the welding operation site.
4, rain, snow, wind level 6 and above windy weather shall not engage in outdoor operations. After rain and snow, water and snow should be removed before operation.
5. Before operation, check the welding machine and tools, such as the insulation of welding tongs and welding cables, the protective grounding of the welding machine shell and various connection points of the welding machine. Before operation.
6, it is strictly prohibited in the inflammable and explosive gas diffusion area, pressure pipes and containers containing inflammable and explosive materials for welding or cutting on the stress parts of the running center.
7. When the welding site is wet or the clothes of the welder are wet after sweating, it is forbidden to lean on the charged steel plate or workpiece. Welders should work on dry insulating boards or rubber mats, and personnel should wear insulating shoes or stand on insulating boards.
8. When welding, it is forbidden to suspend the temporary grounding wire head, which must be fixed, compacted and wrapped with tape.
9. When troubleshooting, replace the welder connector, connect the secondary circuit, carry the welder and replace the safety device. When you finish or leave the site temporarily, please cut off the power.
10, standard fire safety belts must be worn when working at heights, and tied to a reliable frame.
1 1. A guardrail must be set at 5 meters below the operating point, and there must be a special person to monitor it. Flammable and explosive articles must be removed from the area below the operation point.
12. Wear a helmet and mask when working high above the ground. Welding cable should be tied tightly at a fixed place, and it is forbidden to wrap it around or carry it on your back. Welders should work on a stable operating platform. The welding machine must be placed firmly and have a good grounding protection device.
13. During operation, it is forbidden to clamp the electrode holder under your arm to move the workpiece to be welded or hang the welding cable around your neck.
14, when welding, the secondary line must be in place, and it is forbidden to use metal pipes, metal scaffolding, tracks and structural steel bars as loop grounding wires. Handle wire is undamaged and has good insulation. Electric shock protector of electric welding machine must be installed on the welding handle line.
15. When welding cables pass through roads, they must be erected or take other protective measures.
16, the electrode holder wire shall not be placed near the arc or next to the hot weld. Don't roll the handle line. Wear protective glasses or a mask when removing welding slag.
17, after work, you must turn off the switch, separate the welding wire and ground wire, and confirm the fire before leaving the scene.
Precautions for welding equipment 1. The welding machine should be placed in a ventilated, dry and non-corrosive medium, away from high humidity, high heat and dusty places.
2, electric welding machine before use, must check the insulation and wiring, wiring part must use insulating tape. Not loose, not wet.
3, electric welding machine must use a separate power switch, with automatic power-off device. The length of the primary side power cord should not be greater than 5 meters, and the length of the secondary terminal block should not be greater than 30 meters. The wiring on both sides should be firmly crimped, and a protective cover must be installed.
4, welding machine shell must have grounding or zero protection. The welding cable of electric welding machine must use multi-strand thin copper wire cable, and the cable sheath should be intact and soft, and its insulation resistance should not be greater than 1M? . Welding machines should be protected and kept clean.
5, electric welding machine must be no-load operation for a period of time after start. Adjusting welding current and polarity switch should be carried out under no load. No-load voltage of DC welding machine shall not exceed 90 V, and no-load voltage of AC welding machine shall not exceed 80 V. ..
The professional work of welders often makes the work clothes completely wet. Chronic manganese poisoning is mainly seen in workers who inhale manganese dust for a long time. The clinical manifestations are mainly extrapyramidal nervous system symptoms, neurobehavioral dysfunction and mental disorders. People who are exposed to manganese include manganese mining and smelting, manganese covered electrode manufacturing, welding and cutting manganese alloys, and industrial workers who manufacture and use manganese dioxide, permanganate and other manganese compounds.
In welding, welders are often harmed by strong light, infrared rays and ultraviolet rays. X-rays produced by electron beam in welding will affect the health of welders.
Combustion and explosion accidents caused by welding sparks.
Burn and scald accidents caused by welding flame or candle.
Electric shock accidents and falling accidents during welding.
Welders will cause pathological changes in blood, eyes, skin and lungs during operation.
During welding, the metal, covered electrode coating, dirt, paint, etc. at the welding site. Evaporation or combustion due to high temperature, forming smoky steam dust, leading to poisoning.
The high-frequency electromagnetic field generated by welding will make people dizzy and tired.
The harm of welding operation is not inevitable. As long as each welder strictly abides by the safety regulations of welding and cutting operations, these hazards can be prevented for junior welders who often get electro-optic ophthalmia.