Have I dropped my self in it here?

[mikeygas]

Good advice given in the posts above, however a tightness test is not mandatory when carrying out an LGSR, it is only recommended!

 

[newcastle phill]

what we have been taught and what i have read from multiple publications..is..

in the event of any pressure drop during the 20mb phase of the tightness test all appliances must then be isolated and the carcas tested in isolation to establish if the carcas is leaking. Wether existing or new - no carcas pressure drops are permissable.

Indeed Only if it is found that the appliances are causing the pressure drop then do we fall back on the specified allowances Re permissable leakage/pressure drop based on meter type etc.

In essence thats what they state

I can post the screenshots from the publications ..

But my viper book doesnt go into as much detail lol

 

[Zee Gas Man]

So there is no permissable drop on old pipe work? You guys are getting me worried! LoL

 

[newcastle phill]

Lol who knows

Confused.com lol

 

[kirkgas]

what we have been taught and what i have read from multiple publications..is..

in the event of any pressure drop during the 20mb phase of the tightness test all appliances must then be isolated and the carcas tested in isolation to establish if the carcas is leaking. Wether existing or new - no carcas pressure drops are permissable.

Indeed Only if it is found that the appliances are causing the pressure drop then do we fall back on the specified allowances Re permissable leakage/pressure drop based on meter type etc.

In essence thats what they state

I can post the screenshots from the publications ..

But my viper book doesnt go into as much detail lol

I take it these are training notes ? If so who wrote them, as I've never seen that statement anywhere, ( I will have closer read through the new IGE/UP/1b document)
These notes aren't the current version, as the let by and TT are now a range rather than specific pressure

 

[kirkgas]

If you test pipework only there is no drop allowed whether it's old or new, the permissable drop is only allowed on existing with existing appliances, because they say a microscopic leak can appear over time through wear and tear, so it can't be allowed on a new system

 

[Zee Gas Man]

There is a spelling mistake in there so not sure about it well i do remember learning that 0 mb is the only thing acceptable when there is no appliances connected or on new appliances.

 

[newcastle phill]

Top one...
Gas installation technology 2011
R.d Treloar is the author.
Hes something to do with the colchester institute ???

Bottom one is from something else that I dont have to hand.

>>None of that is my work or training notes lol I just highlighted the print for ease on my tablet (I wish )

But just pointing it out fellows, dont shoot me, ill leave that to the wife when im on the toilet !! LoL

 

[kirkgas]

It might relate to new installs but I'm sure there's nothing in the IGE/UP/1b about shutting ISO valves on existing systems

 

[newcastle phill]

Thanks kirkgas.
Ill raise this at the college next week with the tutor.
Its annoying when books are wrong or conflicting
The viper book is exactly as you say.
:thumbup: