Gas leak ?

[Agile]

But thanks it is fixed now. It had a 6 bar drop turned out it was a 10 mm pipe behind plasterboard kinked where there use to be a fire.

Even if it was a 6 mbar drop that would not normally be permissible.

Most RGIs write the drop on the form if its any higher than about 1 mbar. They don't have to but it shows they noticed it and actually did the test. Some don't!

Tony

 

[sooey]

I will sign a cert and write tightness test not done, but I think you are only supposed to do that when you can visibly see the whole gas run.

For the time it takes to do one why would you?

 

[hazetimesfive]

aint got time to look for something as pedestrian as a gas leak

 

[Steelmasons]

Even if it was a 6 mbar drop that would not normally be permissible.

Most RGIs write the drop on the form if its any higher than about 1 mbar. They don't have to but it shows they noticed it and actually did the test. Some don't!

Tony

"Not normally permissible"??? What are you on about? , it either is or it isn't no ifs no buts...maybe you could give an example whereby a 6mb leak would be permissible in an "abnormal" situation?
Dependant on meter type/pipework an 8mb leak rate is permissible with appliances connected , as is a 4.5mb/4mb/2.5mb/1mb.
"Most RGI's write the drop on the form"...do they?? speak for yourself.
"Any higher than about 1mb"??? Stop it Jeez..
You've been told on numerous occasions not to compare "most RGI's" with yourself , it's not only pompous but extremely insulting.

 

[gas112]

Love it how some think a 6mb drop on an e6 is so much worse than a 4mb on u6 and heaven forbid leaving an 8mb on the e6

 

[ollski]

I have read on another site that anything less than 0.25 is a permisable drop. My meter is only moving the tinyest of a fraction over 24 hrs. Wanting to know if it is less than 0.25 is it permisable.

Someone somewhere is getting permissible drops confused with perceptible movement.

 

[Dan Robinson]

And working out millibars from cubic feet /metres.

 

[bernardgreen]

Do the regulations about acceptable pressure drop during a leak test take into account the volume of pipe work being tested ?.

The rate of pressure drop will depend on ratio of volume of gas in the pipe work to the volume of gas that leaks out of the pipe work. A small leak from a small volume of pipe work will result in a pressure drop that would be less than the same amount of gas leaking from a large volume of pipework in the same time.

 

[Terrywookfit]

Yes .

 

[gas112]

poor old bernard probably couldnt find all the different allowable drops depending on meter and pipework sizes and could only find 4 and 8 on google