2, welding according to the operation and with the personnel must wear labor protective equipment in accordance with the regulations. And must take safety measures to prevent electric shock, fall from height, gas poisoning and fire and other accidents.
3, the site of the use of welding machines, should be high rain, moisture, sun machine shed, and should be equipped with appropriate fire fighting equipment.
4, welding site within 10m, shall not be stacked oil, wood, oxygen cylinders, acetylene generators and other flammable, explosive substances.
5, when the long term suspension of the welding machine back in use, the insulation resistance shall not be less than 0.5MΩ, wiring shall not have corrosion and moisture phenomenon.
6, the welding machine wire should have good insulation, insulation resistance shall not be less than 1MΩ, shall not be placed near the welding machine wire high temperature objects. Welding machine wire and grounding wire shall not be hitched on the flammable, explosive and with a heat source, grounding wire shall not be connected to the pipeline, mechanical equipment and building metal frame or track, grounding resistance shall not be greater than 4 Ω. It is strictly prohibited to use the building's metal structure, pipeline, track or other metal objects to form a welding circuit by hitching up.
7, electric welding pliers should have good insulation and heat insulation. Electric welding pliers grip must be well insulated, grip and wire connection should be secure, good contact, the connection should be wrapped in insulating cloth and shall not be exposed. The operator shall not use his arm to hold the electric welding pliers.
8, welding wire length should not be greater than 30 m. When the need to lengthen the wire, should increase the cross-section of the wire accordingly. When the conductor through the road, must be elevated or through the protective tube buried in the ground; when passing through the track, must pass under the track. When the conductor insulation is damaged or broken strands, it should be replaced immediately.
9, the pressure state of pressure vessels and pipelines, charged equipment, bearing structure of the stressed parts and containers containing flammable and explosive substances are strictly prohibited welding and cutting.
10, welding copper, aluminum, zinc and other non-ferrous metals, should be well ventilated, welders should wear gas masks, breathing filters or take other anti-virus measures.
11, when the need to weld pressurized containers, sealed containers, oil drums, pipelines, workpieces with flammable gases and solutions, should be eliminated first containers and pipeline husbandry to eliminate flammable gases and solutions, and then rinse the toxic, hazardous and flammable substances; there are residual grease containers should be rinsed with steam, alkaline water, and to find the lid open to confirm that the containers are cleaned, and then filled with clean water before welding. Welding. Measures should be taken to prevent electric shock, poisoning and asphyxiation when welding in containers. Welding, cutting sealed containers should be left out of the air hole, if necessary, in the air inlet and outlet at the installation of ventilation equipment; container lighting voltage shall not exceed 12V, the welder and the weldment should be insulated; containers should be set up outside the person to monitor. Strictly prohibited in the container has been sprayed with paint and plastic welding.
12, when welding preheated weldment temperature of 150 ~ 700 ℃, there should be a baffle to isolate the radiant heat emitted by the weldment, the welder should wear heat-insulating asbestos clothing and shoes, hats and so on.
13, high-altitude welding or cutting, must be fastened with a safety belt, welding around and below should take fire prevention measures, and should be supervised.
14, rainy days shall not be welding in the open air. When working in the wet area, the operator should stand with a paved insulated items, and should wear insulated shoes.
15, should be rated according to the welding machine welding current and temporary load rate operation, overloading is strictly prohibited. In the load operation, should always check the temperature rise of the welding machine, when the temperature rise exceeds A 60 ℃, B 80 ℃, must stop running and take measures to reduce temperature.
16, when removing weld slag, should wear protective eyewear, head should be avoided knocking slag spatter direction.
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