MP bonding attached along length of service pipe?

[JohnnyG]

Can I simply use cable ties to attach the MPB conductor along the length of a gas supply pipe (4m max) back to it's point of entry and the bonding connection?
I can't find any regs that prohibit this but if anyone knows better I'm all ears

 

[holmslaw]

..

 

[londonboy]

I wouldnt

 

[mikhailfaradayski]

why not?

 

[nozspark]

No you can't.

It's one of the faults on the 2391 visual inspection board (erection methods),,,, because the pipe could be subject to changing temperatures and movement

 

[GaryMo]

No you can't.

It's one of the faults on the 2391 visual inspection board (erection methods),,,, because the pipe could be subject to changing temperatures and movement

And what would that cause to happen considering the length of run in a mere 4 meters and internal?

Also, how much movement would you expect in the gas pipe?

It's not the best way to run a conductor but I can't see it being much of a problem.

 

[nozspark]

If you've done 2391 you will have seen this on the visual inspection board; amongst 2 x T&E under one clip, board not to IPX2 etc, etc ---- it's one of the 12 faults that you have to find (erecton methods)!

 

[GaryMo]

I have done my 2391 and passed but in your opinion, what do you think is the worst thing that could happen under those circumstances?

How much movement do you expect in a gas pipe?

 

[nozspark]

TBH there will probably be very little chance of damage to any cable attached to a pipe using this method - especially for 4m indoors

But Johnny asked if there were any regs that prohibited him from doing this and IMO I've answered his question... I know I've not quoted any specific regs and I am going from memory.

 

[ban-all-sheds]

If you've done 2391 you will have seen this on the visual inspection board; amongst 2 x T&E under one clip, board not to IPX2 etc, etc ---- it's one of the 12 faults that you have to find (erecton methods)!

And having found them, what code are you expected to put on the PIR for them?

No you can't.

It's one of the faults on the 2391 visual inspection board (erection methods),,,, because the pipe could be subject to changing temperatures and movement

1) It's a gas pipe, not a hot water one. It's made of the same metal as the bonding conductor, and subect to the same ambient temperature fluctuations - how much differential expansion will there be?

2) It's a gas pipe - it'd better not be wobbling about with mechanical movement.

3) You could always leave the cable ties slightly loose.

But Johnny asked if there were any regs that prohibited him from doing this and IMO I've answered his question... I know I've not quoted any specific regs and I am going from memory.

When you've got a chance not to go from memory could you look the reg up?

 

[holmslaw]

..

 

[kevindgas]

i would say no
because the cable ties are not recognised as proprietory fittings specifically designed for the purpose.
it is an interesting one though as electrical cable should be 25mm distance away from the gas pipe yet this has to connect to it!!
also is earth bonding cable suitable for external use?
perhaps Niceic/Napit/GSR etc need to decide on a suitable fixing arrangement!!

 

[GaryMo]

How would you attach small SWA's to a cable tray?

Yes, a 10mm2 PEB conductor can be routed externally but in this case it's internal.

There's nothing stopping the OP running the conductor in mini trunking.

PEB's are not intended to be separated from gas pipes by 25mm.

BS6891-2005
8.16.2 Separation of installation pipework from other services

Where installation pipes are not separated by electrical insulating material, they shall be spaced as follows: a) at least 150 mm away from electricity meters and associated excess current controls, electrical switches or sockets, distribution boards or consumer units; b) at least 25mm away from electricity supply and distribution cables.

 

[ban-all-sheds]

i would say no
because the cable ties are not recognised as proprietory fittings specifically designed for the purpose.

What are they recognised as?

What are they designed for?

 

[GaryMo]

Securing wheel trims?