1 Safety and Protection
Electrode arc welding operation, you must pay attention to safety and protection, security and protection technology to prevent the main shock, arc radiation, fire, explosion and toxic gas and smoke poisoning.
1.1 to prevent electric shock
Electrode arc welding, the welding voltage and output voltage and the voltage portable lighting so there is a danger. Therefore, to take measures to prevent electric shock. Or receive a zero. Welding cables and welding clamp insulation to good, if damaged, must be promptly repaired. Electrode arc welding, wear insulated shoes, wearing welding gloves. In boilers, pressure vessels, piping, narrow groove welding wet ground, there must be insulated pad, and some outside care. The use of portable lights, the voltage does not exceed the safe voltage of 36V, high above the ground does not exceed 12V. High-altitude operations, near high-voltage cable 5m or 2.5m from the low pressure within the operation, must blackout, and warning signs at the gates hung, set of people care. Electric shock if it was to cut off the power, and timely treatment.
1.2 to prevent the arc radiation
Strong arc welding arc and UV on the eye and skin damage. Welding Electrode , arc welding goggles must be used with film mask, and wearing overalls, wearing welding gloves. People welding operation, to avoid mutual influence, should set the arc shield or take other measures to avoid cross-arc radiation effects.
Isolated from the Mars. 6 or more wind, there is no effective security measures can not be open-air welding operations and high-altitude operations, welding operations in the vicinity should be fire-fighting facilities. Welding work should be finished wind up, and promptly clean up the site, the complete elimination of fire.
1.3 to prevent fires
Ignition source lOm in welding operations within the high-altitude operations below and within reach of welding Mars, should be thoroughly cleared of organic dust, wood, sawdust, cotton, silk cotton, hay straw, oil, gasoline, paint and other flammable items. If not leave flammable items, such as timber, not the removal of thermal insulation and other combustible materials, reliable safety measures should be taken, such as water jet wet, covered wet sacks, asbestos cloth and so on.
1.4 to prevent explosions
Point lOm in welding operations within, may not have explosive materials in the oil depots, oil room, acetylene stations, spray booths and other explosive mixture of indoor, non-welding operations. No special measures, not including the pressure of the pressure vessel and piping welding. Inflammable and explosive materials during the installation over container before welding, the items to dress up to do, and water, steam or nitrogen replacement, clean: test explosion and other equipment with the examination and analysis of the concentration of the gas medium; welding operations , to open the flap, the operator should hide away from the container orifice.
1.5 to prevent toxic gases and smoke poisoning
Welding Flux will produce soluble fluoride, hydrogen fluoride, manganese, nitrogen oxides and other toxic gases and dust, can cause fluoride poisoning, manganese poisoning, such as welding pneumoconiosis, especially alkaline electrode in the container, the internal pipe welding even more. Therefore, according to the specific circumstances of a comprehensive ventilation, local exhaust ventilation, a small unit, exhaust welding smoke ventilation discharge measures.
