Help understanding a tightness test results.

[Stuaz]

Hi I just want to start this post by saying I am not a gas engineer nor am I attempting to do any gas work.

I recently had a new kitchen fitted which involved a new gas hob.

After it it was fitted a month later I had a gas leak. The engineer from the gas company traced the leak back to the hob and claimed the pipe work was not correctly done. The previous engineer who fitted it had fitted it on a bend in the pipe work rather than using an adapter.

After replacing the piping no more leak.

I have the tightness test results from the original fitting. They state -

02:00 min time
-21.70 mbar p1
-21.38 mbar p2
-0.32 mbar difference

I haven't a clue what they mean but because it indicates a difference does that mean it indicates a leak?

thanks in advance

 

[Scott_D]

Did you check the gas safe details for the first person?

 

[ShaunCorbs]

P1 start of test
P2 end of test

Difference drop between the two and no alot of things can affect this weather temperature etc

Yours looks perfectly fine and I would say there's no leak

 

[Scott_D]

Wrong test pressure though

 

[ShaunCorbs]

Wrong test pressure though

But still under reg lock out and close enough I would say

 

[Scott_D]

I was thinking maybe a kitchen fitter did the work who isn't gas safe

 

[ShaunCorbs]

I was thinking maybe a kitchen fitter did the work who isn't gas safe

Yea was thinking the same until I saw he took the time to write his test down, how many non gas safe would know how and would do it

 

[newcastle phill]

So that test was the original test ???
Prior to being repaired ?

 

[Stuaz]

So that test was the original test ???
Prior to being repaired ?

Yeah the original test. I don't have one from after unfortunately.

 

[Stuaz]

Did you check the gas safe details for the first person?

They were provided by the kitchen fitting company.

 

[Stuaz]

P1 start of test
P2 end of test

Difference drop between the two and no alot of things can affect this weather temperature etc

Yours looks perfectly fine and I would say there's no leak

Thanks. Can only conclude that it was a slow leak that got worse over time due to pipe work join.

Thanks for your help.

 

[Captain.rick]

i dont think a gas safe registered person would leave a hob with a leak anyway.

them test results indicate a minor drop which as mentioned before could be due to temperature change etc.

if anyone adjusted the hob (position etc) after installation from the gas man that could have loosened the connection causing the leak you found.

 

[Stuaz]

i dont think a gas safe registered person would leave a hob with a leak anyway.

them test results indicate a minor drop which as mentioned before could be due to temperature change etc.

if anyone adjusted the hob (position etc) after installation from the gas man that could have loosened the connection causing the leak you found.

Hi, no one moved the hob after it was connected.

I did a check of the engineer and he is gas safe registered.

 

[JLS]

Correct me if I'm wrong but shouldn't the temperature stabilisation have occurred in the previous 1min settling time and as it's a new appliance the allowable drop zero?

 

[Captain.rick]

Yes but if you have a digital man it reacts to temperature changes such as a cool breeze or heat from your hand etc

 

[Subby]

I thought you had to investigate a 0.25 mb drop on a digital meter?

 

[Captain.rick]

Yes sorry I never read this properly. On carcass yeah and of course new hob sorry scan reading