This regulation specifies the content and requirements for safe operation beneficiation plant gas welders positions. This procedure applies to the gas welder position of the concentrator. 2 content 2.1 Operators must be qualified after safety training; wear professional protective equipment such as helmets and gloves before starting work. Employees must wear three tight dresses; women workers must be in safety helmets, not wearing shorts, high heels, and slippers. 2.2 Strictly observe the general welder safety regulations and the safety rules for the use of oxygen cylinder acetylene bottles and the safety rules for welding (cutting) torches. 2.3 The distance between the oxygen cylinder, the acetylene cylinder and the open flame should be more than 10m. If the operating conditions are not limited to less than 5m, and isolation measures shall be taken. The distance between the two bottles shall not be less than 5m. 2.4 It is forbidden to use a spark-prone tool to open the oxygen or acetylene gas valve. 2.5 When the gas cylinder equipment pipeline is frozen, it is strictly forbidden to use fire to bake or use a tool to strike the frozen block. The oxygen valve or pipe should be melted with warm water at 40 °C. 2.6 The welding site should be equipped with appropriate fire-fighting equipment. Keep away from direct sunlight on oxygen cylinders or acetylene bottles when working in the open air. 2.7 Pressure vessels and pressure gauges, safety valves, shall be submitted to the checksum test as scheduled. 2.8 When the work is completed or when leaving the work site, the safety helmet of the gas cylinder should be screwed on, and the site should be cleaned to ensure that there is no combustible material before leaving the work site. 2.9 Rubber hoses are subject to pressure testing. The oxygen hose test pressure is 2 MPa; the acetylene hose test pressure is 0.5 MPa. Substitutes that are not subjected to pressure tests and hoses that are deteriorated, aged, brittle, leaking, and greased are not allowed. 2.10 The length of the hose is generally 10 to 20 meters. Do not use hoses that are too short or too long. Joints must be tightly fastened with special clips or annealed metal Sika. 2.11 The oxygen hose is black and the acetylene hose is red. It must not be confused when connecting to the torch. 2.12 When acetylene hoses fall off, rupture or catch fire, the flame of the torch or torch should be extinguished first, then the gas supply should be stopped. When the oxygen hose is on fire, the oxygen cylinder valve should be closed quickly to stop the oxygen supply. It is not allowed to use the bending method to extinguish the oxygen hose. When the acetylene hose is on fire, the fire can be extinguished by bending the previous hose. 2.13 It is forbidden to place rubber hoses on high-temperature pipes and wires, or to press heavy and hot objects on the hoses, nor to lay the hoses together with the wires for welding. It should be prevented from being cut when used. If the hose passes through the roadway, it should be sheathed or covered. 2.14 The storage and user of the oxygen cylinder must carefully implement the provisions of the Gas Safety Supervision Regulations. The color characters on the gas cylinders are in accordance with the national uniform regulations, and no one may alter them. To keep it clean and to do regular pressure test, the helmet and anti-vibration apron of the cylinder should be complete. Each cylinder must be used during the periodic inspection cycle (three years). 2.15 The storage tank of the gas cylinder is strictly prohibited from passing through any pipeline, and the sign of “no fireworks†shall be set; the distance from the open flame or the place where the spark is emitted shall not be less than 15m. Oxygen cylinders should be stored separately from other flammable gas bottles, greases and other flammable materials. It is forbidden to lift oxygen cylinders by train or crane during transportation and storage. When the gas cylinder is transported in the warehouse or in the workshop for a short distance, special handling tools such as carts are used, and shoulder transport is strictly prohibited. It is strictly forbidden to throw, slide, roll, turn and ankle. 2.16 Gas cylinders should be kept away from fire sources (10m away). When using two gas cylinders, the spacing should be no less than 5m. Do not violently collide and sunburst, and keep well ventilated. 2.17 It is forbidden to use an oxygen cylinder without a pressure reducer. 2.18 When opening the oxygen valve, use special tools, the action should be slow, do not face the decompression table, but should observe whether the pressure gauge pointer is flexible and normal. When the gas cylinder is frozen, it is strictly forbidden to roast with fire. Only use hot water (below 40 °C) to resolve. The tools and cylinders used by the operator must not be greased. 2.19 During use of the gas cylinder, the oxygen cylinder should be placed upright on the fixed bracket to avoid accidents. It is found that the leak should be disposed of in time, and it is strictly forbidden to use it in case of leakage. The gas in the gas cylinder is strictly forbidden, and the residual pressure of not less than 0.05MPa must be left. 2.20 Acetylene bottles must be erected during use, transportation and storage. Do not lay or dump; avoid severe vibration and collision; use special trolleys when transporting; take measures to cool down when the ambient temperature exceeds 40 °C. 2.21 When using an acetylene bottle, a welding torch is equipped with a pressure reducer. 2.22 The operator should stand behind the valve port and gently open. Unscrew the bottle valve should not exceed 1.5 rpm. 2.23 The gas in the bottle cannot be used, and a certain residual pressure must be left. When the ambient temperature is less than 0 ° C, the residual pressure is 0.05 MPa; when the ambient temperature is 0 ~ 15 ° C, the residual pressure is 0.1 MPa, when the ambient temperature is 15 ~ 25 ° C, the residual pressure is 0.2 MPa, when the environment When the temperature is 25 to 40 ° C, the residual pressure is 0.3 MPa. 2.24 The amount of acetylene bottles in the welding work shall not exceed 5 pieces. When exceeded, there should be a separate storage room in the workshop. If more than 20, it should be placed in the acetylene bottle storage. 2.25 Acetylene bottles are strictly prohibited from being placed in stock with chlorine cylinders, oxygen cylinders, calcium carbide and other inflammable and explosive materials. The working point is separated from the oxygen cylinder and the open flame is at least 10 meters away from each other. 2.26 application tip transparent or bamboo copper wire, iron wire prohibited. 2.27 Check the suction capability of the torch or torch before use. The method is: first connect the oxygen tube, open the acetylene valve and the oxygen valve (the acetylene tube and the torch and the torch should be disengaged at this time), and gently touch the acetylene inlet of the welding torch with your finger. If there is suction, the explanation Good shooting ability. When acetylene gas pipe is inserted, the acetylene gas flow should be checked first and then connected. If there is no suction, even if the oxygen flows back from the acetylene joint, it must be repaired, otherwise it is strictly prohibited. 2.28 According to the thickness of the workpiece, select the appropriate torch, torch and tip, cutting nozzle, avoid using the torch to cut thicker metal, and use a small cutting nozzle to cut thick metal. Abs For Advertisement,Plastic Abs Sheets,Plastic Abs Printing Sheet,Abs Sheet For Printing Yixing Guanyu New Materials Co.,Ltd , https://www.maplasticsheetsupply.com
Safety procedures for gas welders in a concentrator
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