Why should welding jumpers not be connected to pipes that carry flammable and explosive materials
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Most materials used in the chemical industry are flammable and explosive; therefore, welding connections should not be made on pipes that transport such materials, yet this issue is often overlooked.
If the connection between the grounding wire and the pipe is not proper, sparks can be generated, creating unnecessary ignition points; if this is not detected in time, it could lead to fires or explosions: handshake
Flammable and explosive pipelines cannot be used as current circuits. A combustion explosion will occur. It’s very dangerous.
Apart from the situation mentioned on the first floor, high currents passing through pipes can cause heating. If the medium inside the pipes is liquid, it may vaporize when heated, leading to an increase in pipe pressure and thus posing a risk of overpressure. This post was last edited by zhm5795342 on 2007-12-12 at 12:01
This should be basic common sense for those working in this industry – such practices are not allowed. The hazards associated with them were also mentioned by several colleagues; in fact, when working in the chemical industry, safety must be a top priority, and one should always be cautious at all times: handshake
1\ If the connection between the grounding wire and the pipeline is not proper, sparks can be generated, which poses a risk to materials that are flammable or explosive in the vicinity. 2\ When current flows through the pipeline as a result of the connection between the grounding wire and the pipeline, the pipeline can heat up, posing a risk to flammable or explosive substances inside it. 3\ In cases where the grounding wire is connected to pipelines located in utility tunnels, and there are many such pipelines carrying flammable or explosive materials, this constitutes a risk.
If welding jumpers are placed on pipelines containing flammable materials, it is easy to generate sparks that can cause combustion and explosions； Second, a potential difference is generated in the pipeline, which may lead to static discharge and sparks, thus also causing accidents. This post was last edited by limingshuguang on 2007-12-25 13:34.]
One accident occurred because the welding wire was connected to the methanol pipeline, and the insulation covering of the cable had aged, resulting in an explosion of the methanol storage tank
The poster should be careful; this is strictly prohibited in our company.