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Safety Case for Using a Welder
2021-10-19 09:12
Many new welders or electricians did not receive systematic training before they were engaged in welding work, and their safety awareness was not strong, which led to serious problems. A classmate and a former colleague's husband were electrocuted and the family fell apart. There are more safety shows below. Everyone should take warning. Of course, the company should also choose safe and reliable welding machines when purchasing welding machines.
Accident Case 1
Alcohol barrel explosion for welding leakage
The main course of the accident--
A pharmaceutical factory workshop sent a leaking alcohol barrel to the machine repair team for welding. The alcohol barrel exploded shortly after the welder was welding. The flying barrel cover directly cracked the welder's head, causing death on the spot.
Operation in safety case container
The main cause of the accident--
The alcohol barrel has not been cleaned before welding, and there is still residue in the barrel, and the alcohol is extremely volatile. It forms an explosive mixed gas with air in a closed container, which will ignite and explode during gas welding.
The main preventive measures--
(1) Containers containing alcohol must be cleaned with clean water before welding, and open the lid for welding.
(2) Before welding, the welder must find out what flammable and explosive articles the container has been filled with and complete cleaning. Blind hot welding is strictly prohibited.
The welder connects the power supply of the welder without authorization and suffers electric shock.
Accident Case 2
The main accident--
A welder in a factory carried out welding operation at an outdoor temporary construction site. During the operation, he found that there was no power gate box when the welder was connected, so he removed the rubber from each conductor head on the cable and connected it to the open-air power grid line respectively. However, due to the wrong zero line connected to the live line, when he adjusted the welding current, he suffered an electric shock when he touched the shell with his hand, resulting in death.
Operation in safety case container
The main cause of the accident--
The welder is not familiar with the relevant electrical safety knowledge, and the neutral wire is connected to the live wire by mistake, so that the shell of the welder is charged, resulting in electrocution.
How to prevent accidents?
The wiring work must be carried out by electricians, welders are not allowed to do without authorization.
Accident Case 3
Electric shock accident caused by burning of wiring board and electrification of welding machine shell
The main course of the accident--
A welder in a factory, Party A and Party B, were doing spot welding of the iron shell. They found that a lead coil of the welding machine had been broken, so electrician A found a soft cord and asked electrician B to replace it. When replacing the wire, B found that the bolt of the wire connection plate was loose, so he tightened it with a wrench. At this time, A was not present. Then B left the job site after a few trial welds. After returning, A did not know the situation and started spot welding. After only one weld, he fell to the ground with a loud cry. Worker C immediately switched off the power supply, but finally died due to untimely rescue.
Operation in safety case container
The main cause of the accident--
(1) Due to the burning of the wiring board, the coil and the welding machine shell want to touch each other and cause a short circuit.
(2) The welding machine shell is not grounded
How to prevent accidents?
(1) Equipment maintenance should be carried out by electricians
(2) Welding equipment shall be protected and grounded
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