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

[JTplumbingservices]

As it’s acceptable and safe

Let’s say you’ve had a 2.5 mbar drop you spend 1/2 a day looking around and testing you find it and fix it

Give the customer a bill of let’s pick a figure £200 every other engineer hasn’t picked this fault up / says it needs repairing

Customer says how much, they phones gas safe up and say I want to see if something sounds right with you

I’ve had a gas leak of 2.5 mbar and the engineers found it and repaired it but it’s cost me 200 did it need repairing

They will ask the customer a few questions or send an inspector out etc

And they will say no it’s within acceptable limits Customer won’t pay the bill etc

Ok I get where your coming from with that side of things.
I thought you were meaning I wouldn’t be doing something safely.
I wouldn’t do that though tbf, if I chose to do that just for my own piece of mind then any extra time taken would be on me.

 

[ShaunCorbs]

Ok I get where your coming from with that side of things.
I thought you were meaning I wouldn’t be doing something safely.
I wouldn’t do that though tbf, if I chose to do that just for my own piece of mind then any extra time taken would be on me.

Thing is if you take that stance good luck as you could be buying new cookers and gas valves/ fires for people out if your own pocket and can’t charge for

 

[JTplumbingservices]

Thing is if you take that stance good luck as you could be buying new cookers and gas valves/ fires for people out if your own pocket and can’t charge for

I get you mate

 

[Sharp Point]

if you did oversell you could be done and gas safe envolved if the customer was that way

Complete carp! Any legal establishment on this island would merit any safety based repair, regardless of whether it’s within spec.

 

[Sharp Point]

A gas leak .... is a gas leak, and may progressively get worse.

 

[ShaunCorbs]

Complete carp! Any legal establishment on this island would merit any safety based repair, regardless of whether it’s within spec.

Nope and your other post your test is only valid for that day / the time your there say you have a massive gas leak a month after your not responsible/ no liability

 

[ShaunCorbs]

A gas leak .. is a gas leak, and may progressively get worse.

So do / could do boilers so you id most boilers you come across them

 

[Sharp Point]

Wasn’t the op’s initial post about panicking about being told she had a leak, I would put a hefty wager that any homeowner would react the same... to be told they had a gas leak. Now don’t get me wrong, I certainly don’t go making a meal to the custard about having a gas leak,in the view to creating extra work( as long as it’s within tolerance)
My reply to you previously, was about ‘being done’ by the gas police.

 

[JTplumbingservices]

So if in that situation, you had a 3mbar drop on a g4 metre, your conscience gets the better of you and you decide to investigate. You isolate the appliances and prove the pipework is sound. You then test each appliance individually and find the gas valve on the fire is passing. What then? Do you leave it or have to condem it?

Things like that are what the tolerances are for so as long as it was within it would be ok.. however, I would inform the customer of the situation and explain to them about the permissible drop and that it is safe to leave.. or I could repair/renew it if thats what they wanted.
This way I have covered all bases.

 

[ShaunCorbs]

Wasn’t the op’s initial post about panicking about being told she had a leak, I would put a hefty wager that any homeowner would react the same... to be told they had a gas leak. Now don’t get me wrong, I certainly don’t go making a meal to the custard about having a gas leak,in the view to creating extra work( as long as it’s within tolerance)
My reply to you previously, was about ‘being done’ by the gas police.

they would say its within safe limits why did you go looking for the leak when you didnt need too

 

[Sharp Point]

they would say its within safe limits why did you go looking for the leak when you didnt need too

Maybe, but I certainly don’t think you’d ‘get done’ For being over safe.

Me personally would starting raising my brow to a 3mbar drop

 

[Harvest Fields]

With reference to the OP and as per @ShaunCorbs post. You probably wouldn’t see 0.5 on a water gauge. Bet he tested with a digital. 0.5 is perfectly acceptable.

 

[JTplumbingservices]

With reference to the OP and as per @ShaunCorbs post. You probably wouldn’t see 0.5 on a water gauge. Bet he tested with a digital. 0.5 is perfectly acceptable.

Isn’t 0.25 considered perceptible on a water gauge ? which can’t be seen so any visual movement is considered perceptible ?
And 0.1 on a digi?

 

[ShaunCorbs]

Isn’t 0.25 considered perceptible on a water gauge ? which can’t be seen so any visual movement is considered perceptible ?
And 0.1 on a digi?

0.25 on digi and 0.5 on water / it used to be

 

[townfanjon]

Jezzzz is this still going lol

 

[ShaunCorbs]

Jezzzz is this still going lol

Been for a bubble bath and a pint of ap favourite?

 

[townfanjon]

Been for a bubble bath and a pint of ap favourite?

Have you got a chuffin camera in my bathroom ?

 

[ShaunCorbs]

Have you got a chuffin camera in my bathroom ?

😀 My lawyer requested I don’t answer that

 

[Harvest Fields]

Have you got a chuffin camera in my bathroom ?

I heard he was scrubbing your back?

 

[garygvl]

I’m confused at this post?

your a brummie , totally understandable

 

[garygvl]

your a brummie , totally understandable

cheers mr fields no disrespect intended just a northern thing

 

[hammers4spanner]

You dont need to do a TT on a service

 

[Last Plumber]

What is the record number of posts on the subject of tightness testing in one thread?
Has this one won yet?

 

[Harvest Fields]

What is the record number of posts on the subject of tightness testing in one thread?
Has this one won yet?

Still about another 100 to go I think.😛😛😛

 

[Last Plumber]

Still about another 100 to go I think.😛😛😛

I can't say I would be surprised. 😀

 

[fixitflav]

they would say its within safe limits why did you go looking for the leak when you didnt need too

Agreed, there almost certainly isn't a leak, and none within the meaning of the regs. No system would be totally leak free - if you left it for a year the pressure would fall. As others have said, change of temperature could easily cause that sort of pressure change. A fall of about 0.15°C is all it needs for the pressure to fall by 0.5mb.

 

[Old Account]

So your going to test a gas pipe with water

You are funny as usual... how about air or N nitrogenium!?!?!

 

[Old Account]

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.

How come, I come across quite often steel gas pipes which are either under the floor connected to copper or bedded in concrete? However, the point I made is to check for weaknesses and cracks which could be hidden due to slag or other debris.

 

[Sharp Point]

They use to use steel many moons ago and with threaded fittings. I guess with you mentioning slag, that the joints are welded over there?

 

[ShaunCorbs]

You are funny as usual... how about air or N nitrogenium!?!?!

not funny cant air test past 0.5 bar

 

[ShaunCorbs]

How come, I come across quite often steel gas pipes which are either under the floor connected to copper or bedded in concrete? However, the point I made is to check for weaknesses and cracks which could be hidden due to slag or other debris.

you test at op and thats it

 

[Old Account]

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.

Overkill ? Sorry mate but I disagree with that term. A gas pipe should be tested with a lot higher pressure than just 30mbar. You have to check the pipe under a load test which means with higher pressure than the one you will have when the pipe is in use. You will test the material and joints for weaknesses , hairline cracks or pinholes which are covered by slag. Due to the higher pressure you make sure to find those weaknesses or cracks which you won’t find by mbar.

 

[Old Account]

not funny cant air test past 0.5 bar

Lol and then complaining when properties blow up what a rule.

 

[ShaunCorbs]

Overkill ? Sorry mate but I disagree with that term. A gas pipe should be tested with a lot higher pressure than just 30mbar. You have to check the pipe under a load test which means with higher pressure than the one you will have when the pipe is in use. You will test the material and joints for weaknesses , hairline cracks or pinholes which are covered by slag. Due to the higher pressure you make sure to find those weaknesses or cracks which you won’t find by mbar.

so do you remove the boiler cooker and fires to do the test as these can only take 20 mbar

 

[Old Account]

you test at op and thats it

I know that but we having a discussing about what is right and what is wrong. I personally have a different approach to checking and testing gaspipes.