"Dad what is that old grey box for to the right of the meter? How old is it?"

www.youtube.com/watch

Z.

John Ward states that we must not fit B.S. 951 earthing/bonding clamps onto gas track pipe. Do we use this type of flexible gas pipe here in the U.K?

https://www.bing.com/videos/search?q=youtube+track+pipe+gas+pipe&docid=608002941054235473&mid=E5699E2E11AD47916B5EE5699E2E11AD47916B5E&view=detail&FORM=VIRE

Z.

Trouble here! Zoomup says both pipes disappear into the concrete floor, so both should be assumed to be extraneous conductive parts, and BS7671 says both should be bonded. The Gas regulations say only the consumer side of the meter should be bonded whether extraneous or not. Do the gas people know about electricity, well that is for you to decide? Insulated joints are irrelevant here, and PTFE tape does not insulate threads, it simply fills the voids stopping the spiral leak path. In any case the risk is probably low.

Is insulating material an alternative to bonding in any other situation?

Potentially in very situation I would have thought - if it's insulated or otherwise out of reach it can not longer introduce a potential (at least at that point) so it's no longer an extraneous-conductive-part so no longer needs bonding.

https://www.energynetworks.org/industry-hub/resource-library/gis/e17-part-2-insulation-joints-part-2-joints-operating-at-pressures-not-greater-than-7-bar.pdf

Do the gas people know about electricity, well that is for you to decide?

They might equally ask the electrical industry really think it's a good idea to implement PME where diverted N and open PEN currents are shoved down pipework carrying flammable and potentially explosive gas, and whose continuity necessarily has to be broken on occasions during maintenance.

   - Andy.

AJJewsbury said:

pipework carrying flammable and potentially explosive gas

not unless it is mixed with air/oxygen, on its own in a pipe it is neither

AJJewsbury said:

and whose continuity necessarily has to be broken on occasions during maintenance.

the continuity has to be kept in place by law, GSIUR reg 10

"Maintaining electrical continuity

10.  In any case where it is necessary to prevent danger, no person shall carry out work in relation to a gas fitting without using a suitable bond to maintain electrical continuity until the work is completed and permanent electrical continuity has been restored."

I use a car jump lead

we talked about gas pipes and bonding here  (Missing Forum Reply) i wonder if David managed to have a word with Geoff Cronshaw about his article.

It seems that IJs are required to be inserted on any PMEd properties, but i haven't seen many in London, perhaps because the supply pipes are being changed over to plastic 

But what 'electrical continuity' is supposed to be maintained when the gas company decrees that their extraneous-conductive-part supply pipe must not be bonded?