Do I Need to Bond a Metal Gas Pipe 🤔🤷🏻

The pipework in this installation for the gas is made of copper but is not bonded. So my question is do we need to bond this metal gas pipe in the installation…? To find out the answer we need to workout if the pipe is an extraneous conductive part to do this we need to look at the incoming gas pipe to the gas meter. In this installation the pipe to the gas meter is metal but not all of it. Because the pipe at ground level feeding the installation is made of plastic even though the installation pipework is metal (copper) it will not require bonding. We bond gas and water pipes when they are extraneous conductive parts in other words connected to the great mass of Earth. As the incoming pipe is plastic the pipework in the installation is therefore not connecting to the great mass of Earth and therefore bonding of the gas pipe in the installation will NOT be needed.

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[ChristianDannyman]

It depends if the internal installation is metallic, if so it is still recommended to install main bonding unless it can be confirmed that the pipe work does not introduce any Earth potential. At least that’s what the on site guide states. I guess the internal pipe work could still dive under the ground within the screed etc to reach a hob etc

[Marcel_Germann]

Here in Germany you'll have to bond the gas pipe if the pipe is made of metal inside of the house. No matter if the incoming is conductive or not. Bonding must be as close as possible to the entrance point. This is according to DIN VDE 0100-410 (protective measures against electric shocks).
If there's an isolating part between the incoming pipe and the piping inside of the house (metal pipe, isolation piece of pipe, and metal again), it's not permitted to simply bridge it with a piece of cable. If you need to bridge it, you'll have to introduce an SPD into that connection. Cross-sectional area of the bonding cables is at least 6mm² copper (DIN VDE 0100-540).

We even bond the shields of antenna cables on cable TV or satellite dishes. Their mounting bases must also be bonded btw. as a measure for protection against lightning strike.

[joegroves]

I'd bond it just in case but doesn't technically need it

[angelcastillo]

Per 2018 UPC : 1211.1 Pipe and Tubing other than CSST:
" each above ground portion of a gas system other than CSST that is likely to become energized shall be electrically continuous and bonded to an effective ground-fault current path. Gas piping, other than CSST, shall be considered to be bonded where it is connected to the appliances that are connected to the appliance grounding conductor of the circuit supplying that appliance . [NFPA 54:7.13.1]

[joshgreen]

I'm a new student to this but I would say yes, usually on the consumer's side of the pipework. It is an extraneous conductive part that has the potential to become live under fault conditions.

[rogersmith]

If the meter is external to the premises then bond to the consumer's hard pipe at the point of entry to the property.

[paultipton]

I've had a few jobs where it says to bond the gas meter as reported by the gas service engineer and find its already bonded going into the building or near the boiler.
I was even asked to earth bond a gas meter which was on the ground floor level in a carport under a block of flats where the flat was on the 3rd floor so would of meant going on the outside of the building and using scaffolding or a MEWP, the gas meter had a plastic incoming pipe and was bonded in the flat to boiler anyway.

[tomorichard]

Test to confirm if can be considered extraneous or not. There is no easy answer. The other question is if the gas service becomes extraneous within the property. Ie picks up earth potential.

[MT-rcmv]

There's a great quantity of gas meters with no bonding or incorrect bonding..outlet side ie: bonding after a T-Junction or not within the 600 recommended distance, I'd be inclined to add one, testing before & after.
The incoming visible yellow gas pipe should be fully sleeved & reported to the distributor too.

[mb-electricalservices]

As long as the metallic gas pipe does not re-enter the ground at any point then no. Same goes for water.

[SSSwilliams]

yes i would. "good workmanship isn't cheap, cheap workmanship isn't good"

[jamieo]

If you you test that pipe in a wet or damp day with the metallic pipe being in contact with the stonework it will 💯 be less than 22k ohm and require bonding as it will be introducing a potential

[robertburrows]

Yes, there is a possibility of a potential difference from outside in wet conditions

[lisabell]

Nah it don’t tbf it’s in my on site guide

[albioncompliance]

It has to be connected to comply with gas regulation

[effervescence]

Although your description is correct electrically in theory in practice from the gas regulations point of view we're still required to. As Gas regulations are statutory and BS7671 isn't a Gas engineer would be quite within their rights to insist on bonding. If anything were to happen due to ignition caused from a difference in potential across the supply pipework etc afterwards the onus would be on the electrician to ask why they didn't follow the overriding regulations that are referenced in OSG/ BS7671 when it comes to bonding and distances of cable/ accessories/ metering equipment and CU's from Gas pipework and meters.

Also no Yellow mains gas pipe should be visible above ground, it can be damaged by UV rays the same as Twin & Cpc can when outside.

[lisabell]

It doesn’t bc it says in my on site guide

[simonaragon]

Test with An insulation resistance tester to confirm. Quite simple really!

[hamidn]

that is not plastic .that is protective cover for steel pipe against damage and corrosion.

[xxDADDYDAYCARExx]

I'd run a quick test to confirm. sticking my neck out before a test and I say "NOPE" 👍