0.5mb drop on tightness test - Should I be worried?

[AMGasServices]

Thanks for the reassurance!

Is it possibe to locate the "leak" if we get someone back to isolate the boiler and gas hob?

You could get a gas engineer out to come and investigate. As most people have said if there is no smell of gas I wouldn’t worry.

If you decide to isolate appliance and there is still a drop. You may have to repipe the installation.

It’s very difficult to find a 0.5 Mbar drop.

 

[Old Account]

Its within tolerance pal , strange you can have a gas leak but its ok .

Agree with you, why not having 0 tolerance ... pipes should be also tested with higher pressures than just 20mbar. How often you have got steel gas pipe which could be have pinholes or hairline cuts which wouldn’t be shown with lower pressures also too holes and cuts will be covered by internal products. Pipes should be tested with 1bar for 30min. Basically you look for weaknesses on joints and pipes. But that’s the way we do it in Germany ... would be worth to introduce the 0 tolerance

 

[ShaunCorbs]

Agree with you, why not having 0 tolerance . pipes should be also tested with higher pressures than just 20mbar. How often you have got steel gas pipe which could be have pinholes or hairline cuts which wouldn’t be shown with lower pressures also too holes and cuts will be covered by internal products. Pipes should be tested with 1bar for 30min. Basically you look for weaknesses on joints and pipes. But that’s the way we do it in Germany . would be worth to introduce the 0 tolerance

So your going to test a gas pipe with water

 

[Sharp Point]

Agree with you, why not having 0 tolerance . pipes should be also tested with higher pressures than just 20mbar. How often you have got steel gas pipe which could be have pinholes or hairline cuts which wouldn’t be shown with lower pressures also too holes and cuts will be covered by internal products. Pipes should be tested with 1bar for 30min. Basically you look for weaknesses on joints and pipes. But that’s the way we do it in Germany . would be worth to introduce the 0 tolerance

we don’t use steel for gas pipes in domestic properties. The permissible drop is to cater for old gas valves on appliances, pipework only has to be totally tight.

 

[JTplumbingservices]

Agree with you, why not having 0 tolerance . pipes should be also tested with higher pressures than just 20mbar. How often you have got steel gas pipe which could be have pinholes or hairline cuts which wouldn’t be shown with lower pressures also too holes and cuts will be covered by internal products. Pipes should be tested with 1bar for 30min. Basically you look for weaknesses on joints and pipes. But that’s the way we do it in Germany . would be worth to introduce the 0 tolerance

A domestic gas installation should be tested at 1 bar for 30 mins ?
Standing pressure is usually well below 30mbar and working pressure 21 +\-2 so probably a bit overkill.
I do agree with zero tolerance though, that’s alway what I aim for anyway even if it’s within permissible drop.

 

[ShaunCorbs]

A domestic gas installation should be tested at 1 bar for 30 mins ?
Standing pressure is usually well below 30mbar and working pressure 21 +\-2 so probably a bit overkill.
I do agree with zero tolerance though, that’s alway what I aim for anyway even if it’s within permissible drop.

So what would you do if there’s a 1.5 mbar drop

Or an 7.5 mbar drop on an electronic one

 

[JTplumbingservices]

So what would you do if there’s a 1.5 mbar drop

Or an 7.5 mbar drop on an electronic one

I’d try and find where it was coming from and repair if possible.

 

[ShaunCorbs]

I’d try and find where it was coming from and repair if possible.

No need there both classed as acceptable with appliances on the line and no smell, if you did oversell you could be done and gas safe envolved if the customer was that way

 

[JTplumbingservices]

No need there both classed as acceptable with appliances on the line and no smell, if you did oversell you could be done and gas safe envolved if the customer was that way

What do you mean ?
I could be done for trying to find a leak ?
I know it’s permissible but surely it’s better to be 100% tight if possible ?

 

[Harvest Fields]

we don’t use steel for gas pipes in domestic properties. The permissible drop is to cater for old gas valves on appliances, pipework only has to be totally tight.

I’m confused at this post?