Residential Gas Pipe Bonding

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Trowbridge - Martin

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New galvanized gas piping is installed for one new gas range in existing single family home. Florida Building Code Residential Fuel gas states:
CHAPTER 24 RESIDENTIAL FUEL GAS
G2411.1 (310.1) Gas pipe <<bonding>>. Each above-ground portion of a gas piping system that is likely to become energized shall be electrically continuous and <<bonded>> to an effective ground-fault current path. Gas piping shall be considered to be <<bonded>> where it is connected to appliances that are connected to the equipment grounding conductor of the circuit supplying that appliance.
It appears that no external bonding is necessary to the pipe from: service equip enclosure, the grounded conductor at the service, the grounding electrode conductor or to one or two of the grounding electrodes used.
Second question - if copper water piping is bonded at tank can outside water pipe ever be used for gas pipe bond?
Thank you, Tom
 
Trowbridge - Martin said:
New galvanized gas piping is installed for one new gas range in existing single family home.
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Are you certain this is galvanized gas piping and not csst- corrugated stainless steel? I ask that because we generally don't see galvanized pipe for gas. It is csst or black iron pipe.

If this is a galvanized pipe then the egc that serves a gas furnace or gas appliance is suitable as the bond. 250.104(B)-- last sentences.

If this is csst then you need a bond general a #6 or larger depending on the manufacturer of the product.
 
Dennis Alwon said:
Are you certain this is galvanized gas piping and not csst- corrugated stainless steel? I ask that because we generally don't see galvanized pipe for gas. It is csst or black iron pipe.

If this is a galvanized pipe then the egc that serves a gas furnace or gas appliance is suitable as the bond. 250.104(B)-- last sentences.

If this is csst then you need a bond general a #6 or larger depending on the manufacturer of the product.
Click to expand...

I'm pretty sure that gas codes prohibit the use of galvanized materials because there is something in the gas that reacts with the galvanizing, same with copper for natural gas - copper lines are allowed with LP gas though.
 
True or not I am not sure but have been told by a plumber that they changed plumbing code to allow for galvanized pipe. However I did find this

It depends on what code you are dealing with. for propane work most states have adopted NFPA #58 as the ruling code. NFPA 58 allows both black and galvanized pipe for propane gas however both types have to be certified ASTM A53 steel pipe so there wouldn't be any difference in the strength of the pipe. the only difference is in the Galvanized coating.
Click to expand...
 
Dennis Alwon said:
Are you certain this is galvanized gas piping and not csst- corrugated stainless steel? I ask that because we generally don't see galvanized pipe for gas. It is csst or black iron pipe.

If this is a galvanized pipe then the egc that serves a gas furnace or gas appliance is suitable as the bond. 250.104(B)-- last sentences.

If this is csst then you need a bond general a #6 or larger depending on the manufacturer of the product.
Click to expand...

Galvinized pipe is allowed, per the UPC, and in the last few years I have seen more of it used because the black pipe is harded and more likely to leak when put under test. Something about the pipe having sand in the metal.
 
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