1) Personal protective equipment Metal welding and cutting workers should wear appropriate labor protection products before work, such as dust masks, welding gloves, welding work clothes; Wear safety goggles or face mask when operating; Wear rubber shoes when working in wet places or on rainy days. For special operations, you can also wear a long tube breathing apparatus to prevent smoke hazards. To prevent arc damage, choose different types of filters according to the strength of the current. Wear light colored canvas work clothes, tie the cuffs, buckle the neckline, can reduce its damage to the skin.

2) Pre-work inspection and cleaning Before the operation of various containers, pipelines, workpieces stained with flammable gas and solution, should be inspected first, wash away toxic and harmful, flammable and explosive substances, relieve the pressure of containers and pipelines, and eliminate the closed state of containers. Before the fire, the material in the container should be sampled and analyzed, and the work should be carried out after it is qualified; When welding and cutting closed hollow workpieces, air holes must be left. Work in the container, there should be human supervision, and have good ventilation facilities and lighting facilities.

3) Pay attention to site safety details In order to prevent fire and explosion accidents, the workplace should be carefully checked before operation, and flammable and explosive items should not be stored around the workplace. When performing gas welding or gas cutting operations, it is necessary to carefully check the bottle valve, pressure reducing valve and hose, and there can be no air leakage phenomenon; Screw and remove the valve should be done according to the operating procedures.

In the welding operation, it should be noted that the current is too large, the wire sheath damage will produce high temperature; Poor contact at the joint can cause a fire. Therefore, the operation should be carefully checked before the replacement of defective equipment. In addition, it should also be noted that when welding, cutting pipes, equipment, heat conduction may cause flammable and explosive items at the other end to catch fire or even explode. Check carefully before operation and remove dangerous items at the other end.

When cutting old equipment and scrap steel, pay attention to removing flammable and explosive items included in them. At the job site, a sufficient number of fire extinguishing equipment should be equipped, and the effective period of the fire extinguishing equipment should be checked to ensure its effective use. After the welding and cutting operations, the site should be carefully inspected to eliminate the remaining kindling and avoid future problems.

4) For the prevention of electric shock accidents, the welding machine shell and non-charged metal components must protect the ground (or zero), and the insulation resistance should be large enough. The terminal should be covered with a cover; Welding handle, welding pliers and welding cable insulation; At the same time, distance should be kept between charged bodies and between charged bodies and other objects. The welding machine and the power cord should be placed in a place that is not accessible to the human body.

When climbing and welding, it should be noted that the distance from the high-voltage grid is not too close, the cable used for operation can not be wrapped around the body or on the shoulder, the cable should be tied to the scaffolding and other facilities, so as not to step on the foot, resulting in damage to the insulation layer. When moving, repairing and repairing the welding machine, replacing the fuse, changing the polarity and other operations, the power switch must be cut off.

Wear insulated gloves when pushing and pulling the power knife, and the person should stand on the side to prevent the arc spark from burning the face. In the event of electric shock, the power supply should be cut off immediately and on-site first aid should be carried out.

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