low gas pressure
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Discussion

Silver993tt

Original Poster:

9,064 posts

261 months

Thursday 28th January 2010
quotequote all
I've noticed recently that my gas cooker doesn't burn as strongly as it used to. In fact the wok burner is pretty useless now. However, occasionally the rings will suddenly burn much stronger for a few minutes and then go back down to how they were before.

This has been happening for the last few months. Could it be the regulator at the meter or possibly the supply fronm the street?

Any ideas?

robinhood21

30,989 posts

254 months

Thursday 28th January 2010
quotequote all
Does this coincide with your CH boiler firing up? If so, would say a new gas supply pipe is needed.

Silver993tt

Original Poster:

9,064 posts

261 months

Thursday 28th January 2010
quotequote all
robinhood21 said:
Does this coincide with your CH boiler firing up? If so, would say a new gas supply pipe is needed.
yes it does. So, do you mean the supply to my property? If so, who is responsible/pays for that? Transco?

Also, what's the problem with the supply? Could it be leaking, so low pressure being supplied to start with??

Edited by Silver993tt on Thursday 28th January 14:36

robinhood21

30,989 posts

254 months

Thursday 28th January 2010
quotequote all
Silver993tt said:
robinhood21 said:
Does this coincide with your CH boiler firing up? If so, would say a new gas supply pipe is needed.
yes it does. So, do you mean the supply to my property? If so, who is responsible/pays for that? Transco?
If it's the supply to your property, then yes, it would be Transos problem. But, would think it more likely that it is the supply from the GM to your appliances. Should be at least 22mm supply into your property, maybe more if a large property. BTW, not an expert in these things.

Silver993tt

Original Poster:

9,064 posts

261 months

Thursday 28th January 2010
quotequote all
robinhood21 said:
Silver993tt said:
robinhood21 said:
Does this coincide with your CH boiler firing up? If so, would say a new gas supply pipe is needed.
yes it does. So, do you mean the supply to my property? If so, who is responsible/pays for that? Transco?
If it's the supply to your property, then yes, it would be Transos problem. But, would think it more likely that it is the supply from the GM to your appliances. Should be at least 22mm supply into your property, maybe more if a large property. BTW, not an expert in these things.
it's been fine for 15 years, so I don't understand why the pressure would change without any pipework changes in my house.

robinhood21

30,989 posts

254 months

Thursday 28th January 2010
quotequote all
If you have not recently changed your CH boiler/cooker then I would get on to your gas supplier and ask them to test the gas pressure.

Silver993tt

Original Poster:

9,064 posts

261 months

Thursday 28th January 2010
quotequote all
ok, thanks for the tip smile

Dr_Rick

1,703 posts

270 months

Thursday 28th January 2010
quotequote all
It could be caused by Transco doing 'works' upstream of you in the local network. We had this just before Christmas when they were upgrading iron pipes to plastic and the contractor put in undersized bridging pipes overnight. The result was a throttle was introduced to all the properties on that branch.

If we phoned the water board they would tell me whether they were doing works or not and when it was due to be fixed. With the gas board, low pressure is immediately classed as a dnagerous situation and they send out an engineer to check things (certianly up here in Scotland they do with Scotia Gas). If the engineer confirms low pressure he has the power to shut the supply at the meter. The reasoning being that low pressure can cause the flame to go out and leak raw gas into enclosed spaces and as such create a risk of explosion.

Our guy did this and then trapsed up the street shutting off everyones gas supply, can't imagine he was popular at 7pm with cold weather. In this case he was over-ruled by his supervisor (he wasn't happy at that one), at which point he commented on the lack of a 22mm pipe from the meter. We've now got that fixed, but just be aware that if you contact Transco you could be left without cooking / heating until they resolve who's got the problem.

Dr Rick

ThatPhilBrettGuy

11,810 posts

262 months

Thursday 28th January 2010
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Is there a minimum pressure Transco have to deliver? If it's anything like the water companies it's a laughably wide range.

Gingerbread Man

9,173 posts

235 months

Thursday 28th January 2010
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Roughly 20 millibar after the meter?

Dr_Rick

1,703 posts

270 months

Thursday 28th January 2010
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Sounds about right. IIRC we were measured at 12mb and there's something like a 14mb threshold that causes them to shut everything off.

Dr Rick

dirkgently

2,160 posts

253 months

Thursday 28th January 2010
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Its probably the governor on the meter that has failed. not unusual.

Silver993tt

Original Poster:

9,064 posts

261 months

Thursday 28th January 2010
quotequote all
dirkgently said:
Its probably the governor on the meter that has failed. not unusual.
I thought it might be this but wasn't sure if it was very common. If it is, does that mean a change of meter? If so, would EDF (current supplier) pick up the tab?

dirkgently

2,160 posts

253 months

Thursday 28th January 2010
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Service side, suppliers problembiggrin

Ferg

15,242 posts

279 months

Thursday 28th January 2010
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Silver993tt said:
dirkgently said:
Its probably the governor on the meter that has failed. not unusual.
I thought it might be this but wasn't sure if it was very common. If it is, does that mean a change of meter? If so, would EDF (current supplier) pick up the tab?
YHM-hopefully.