Welding equipment safety management system

1. Purpose

In order to strengthen the safety management of the electric welding machine and prevent electric shock accidents, this system is formulated.

2. area

This system is applicable to the safety management of various forms of welding machines in factories ( companies ) .

3. Duties

3.1 The Manufacturing Department is responsible for the centralized management of this system.

3.2 All departments and production workshops are responsible for the safety management of the welding machine of this unit and strictly implement the “Safe Operation Regulations for Welding Machines”.

4. Manage content

4.1 The power line, welding cable and welding machine are connected with reliable shielded power cord. The exposed wiring board at the connection point between the welding cable and the welding machine should be shielded by safety guard or guard plate to prevent personnel or metal objects ( such as trucks). , crane hooks, etc. ) in contact with it.

4.2 Welding machine shell PE wire connection is correct, reliable connection  

4.2.1 The welder must be grounded ( or connected to zero ) in the correct way . Ground ( or zero ) devices must be well connected, and permanent grounding ( or zeroing ) should be checked regularly.

4.2.2 The use of oxygen, acetylene and other flammable and explosive gas pipelines as grounding devices is prohibited.

4.2.3 Special attention should be paid to avoid welders when performing arc welding operations on weldments with grounded ( or zeroed ) devices, or when welding weldments that are closely connected to the earth ( such as pipes, metal supports of houses, etc. ) . Double grounding of the workpiece.

4.3 Welders transformer primary and secondary windings, insulation resistance between the winding and the shell is not less than 1 megohm , at least once every six months to deal with the insulation resistance of the welder, and record complete.

4.4 The length of the power cord on the primary side of the welder should not exceed 3 m and it must not be used to mop or cross the channel.     The primary wire of the welder must use three-core ( four-core ) copper-core rubber wires or well-insulated multi-strands of flexible copper wires, and the length of the wires must not exceed 3 m . If it is really necessary to use longer wires, one level of power control should be added within 3 m from the side of the welder and the power line should be laid overhead. The primary line of the welder must not be used on the ground, and must not be used on the ground.

4.5 good welding the second line is connected, the joint does not exceed 3

4.5.1 The secondary wire of the welder must be connected tightly, no loosening, no more than three joints of the secondary wire shall be allowed, and the cross-sectional area of ​​the secondary wire of the welder shall be correctly selected according to the capacity of the welder to avoid long-term overload. Insulation aging.

4.5.2 It is forbidden to use the metal structure, pipelines, rails, etc. of the workshop as secondary circuits for welding.

4.6 welding clamp clamping force, reliable insulation, welding pliers integrity of the insulation layer should comply with relevant state regulations, can ensure that the electrode can be clamped at any slope, good insulation, handle insulation layer integrity, welding pliers and wire should be Reliable connection. The connection should be kept light and soft, easy to use, no overheating, no conductors exposed, and good protection of the clamp handle.

4.7 The place where the welder is used is clean, free from serious dust, and there is no flammable or explosive material around.

4.7.1 The working environment of the equipment is in accordance with the specifications in the technical manual. It is placed in a place with ventilation, drying, no collision or violent vibration, no high temperature, and no flammable materials.

4.7.2 Under special environmental conditions ( such as: outdoor rain and snow; temperature, humidity, pressure outside the normal range or a corrosive, explosive danger environment ) , the device must take special protective measures to ensure its normal working performance .

4.7.3 During the operation of a single- or multi-point resistance welding machine, when the operator's hands need to pass through the operation area and may be injured, the following measures must be effectively used to protect: mechanical protection type baffles, stoppers; Control method; latch; limit sensing device; any similar device or mechanism that prevents the indenter from moving when the operator's hand is under the operating point.

4.8 Welder Safety Operation

4.8.1 Welder operation is carried out by personnel who have been specially trained to obtain the "Special Operation Operation Certificate".

4.8.2 The operation of the welding machine must comply with the "safe operation of the welding machine."

5 related documents

"Safe use of welders and their equipment"

"Welding and Cutting Safety (GB 9448. 1999)"

"Safety Requirements for Resistance Welders (GBl5578 . 1995) "

"Safety requirements for arc welding equipment - Part 1 : Welding power supply (GBl5579 . 1995) "

"Arc Welding Transformer Protection Device (GBl0235-2000) "