Pipeline static grounding
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SH3097 stipulates that when the clear distance between parallel pipes is less than 100 mm, a jumper wire should be installed every 20 m. When pipes intersect with a clear distance of less than 100 mm, jumper wires should be added. May I ask why?
It seems to be to avoid the possibility of discharge between pipes.
I wonder if there are companies that do this; I’ve never seen it anywhere I work. Discharge between pipes? It’s not connected to the cable tray; it can pass through the cable tray anyway
This refers to pipes without insulation, right? Nowadays, all fluid pipes come with insulation; I’ve never seen such strict compliance with this requirement
I think it’s mainly for safety :)
There is such a rule in SH3097; I don’t understand it either. Wait for experts to answer!
Grounding it to the bridge frame is also an option, but it is not considered standard practice; generally, it is grounded to the pipe rack, which has conductive wires that connect to the underground grounding grid. This requirement was not strictly enforced in the past, but now, especially in petrochemical companies, it is mandated as a rule for pipelines that are flammable and explosive
A pipe rack and a cable tray are the same thing, aren’t they? What’s the difference?
I would like to ask President Yu: Standards generally require grounding at pipe junctions. Why is that?