Earthing of Pipes

Are you attempting to ask about HYDROCARBON piping? never heard of Hidro carbon piping.

Yes, the regulating authority for your location will be the one who will say where and how anything should be grounded to earth.

Since all hydrocarbons are combustible and the petro chemical refining process tightly controls red-ox reactions by the use of strategically placed electric pumps and valves, I would expect what will or won't be grounded to be critical for safe operation. To state the obvious, non-metallic pipes cannot be grounded. I would not expect the grounding of any electric device to be provided solely by a metal pipe that carries a hydrocarbon.

Yes.

It cuts down on catastrophic explosions.

Only the metal ones.

Thank you all

You did know that already, right?

Fluid flow in a pipe causes net accumulation of electrical charges; earthing of pipes equalizes electrical charges safely. Should electrical charge be inadvertently equalized through media of low flash-point, instead of being through an earth connection, fire/explosion may occur, not unlike explosions/fires at fuel pump - driver gets into vehicle while fuel is being pumped, builds up static charges through friction of his clothes, with car seat, etc, gets out of his vehicle with net accumulation of electrical charges which then discharge through the fuel pump when he reaches for it after fueling - boom!!. At least that's how I understand this topic - hope it's helpful for you, Cheers!

Rubbish. You can't earth a nonconductive fluid.

Hydrocarbon fluid are static creators while they are being transferred through piping and hoses with metallic bonding wires in them. This is contrary to ionic fluids, such as water or baking soda solutions, which are charged with no static by way of the ions of their construction and solution.

As the hydrocarbons travel a static charge is generated in the piping from their molecular structure. As they travel this static charge increases and has a increased potential from one end to the other. The wire from one end to the other end of the pipe is actually a bonding wire. It brings both ends to the same charge. Earthing or ground cables from the piping to the earth bring this bonded potential to the same voltage as the earth. No potential difference no static charges to the length of piping or to the earth.

This is why gasoline and heating oil tankers use hoses with a wire built into the inner surface of the hose. It neutralizes any potential between the inner parts of the hose and other inner parts. Even though the hose uses a metal nozzle connected to this wire and to the female end of the storage tank neck another wire is connected directly to the metal tanker and the storage tank. This is bonding, hose end to hose end, and bonding, wire directly to the tank from the tanker metal shell.

Good Luck, Old Salt

Yes. All metallic pipes ( conducting electricity) need proper earthing - particularly the above ground ones. For non metallic pipes a conductive wire end to end is laid which may be eartheed. Fir underground pipes earthing is normally not resorted as Corrosion protection is in place. There are arcing horns at the ends of every electrical conducting stretch. Say where manned stations isolate the underground mainline ( cross countyry).