permissable drop

[REDSAW]

was also told this at college 2 years ago so that's what i'd do regardless if it is needed or not, as i wouldn't be able to sleep at night if i left a house with a drop even within tolerance unless i made sure it wasn't on carcass.

same here only yesterday.

 

[kirkgas]

i am aware of that, the question i am asking is do you need to determine where the escape is if it is within the tolerance level ie you dont investigate further

NO is the answer to your question, you will find this covered in IGE/UP/1B which covers the complete requiremet for tightness testing, however we will now have a 5 day debate over what we WANT/THINK WE SHOULD/HAVE BEEN TOLD WE MUST DO

 

[tamz]

I've cut the other bits but from IGE/UP/1B on testing existing installations

Quote

h) Check for any pressure drop over the next 2 minute period.
If the pressure drop over this period does not exceed the value given in
Table 1 and there is no smell of gas, the installation shall be deemed to have
passed the test.
If the pressure drop exceeds the value given in Table 1, or there is a smell of
gas, the installation shall be deemed to have failed the test.
i) Where no appliance is connected, there shall be no perceptible movement
(fall) on the gauge reading over the 2 minute test period and there shall be
no smell of gas. If there is no perceptible movement of the gauge reading
(see clause 4.2.2) and there is no smell of gas, the installation shall be
deemed to have passed the test.


No mention of then isolate and find it but you should use your judgement and common sense.

 

[GQuigley67]

There is no requirement for you to go round isolating every appliance to prove if release of gas is on pipework or appliances, its within tolerance. If start looking then yes. Personally I assess each situation. Might run round obvious parts of the installation with my audible leak detector. Did it today, found the usual leaking pipe behind kitchen units passing up to a ga hob. Meter disc installed, waiting for the repairs contractor to go in tomorrow.

much u get an audible leak detector for ? quite expensive I'd imagine ??

 

[Reg Man]

Can get resonable quality audible detector for about £50.

 

[kirkgas]

I've cut the other bits but from IGE/UP/1B on testing existing installations

Quote

h) Check for any pressure drop over the next 2 minute period.
If the pressure drop over this period does not exceed the value given in
Table 1 and there is no smell of gas, the installation shall be deemed to have
passed the test.
If the pressure drop exceeds the value given in Table 1, or there is a smell of
gas, the installation shall be deemed to have failed the test.
i) Where no appliance is connected, there shall be no perceptible movement
(fall) on the gauge reading over the 2 minute test period and there shall be
no smell of gas. If there is no perceptible movement of the gauge reading
(see clause 4.2.2) and there is no smell of gas, the installation shall be
deemed to have passed the test.


No mention of then isolate and find it but you should use your judgement and common sense.

Tam you are the man, cause you said the same as me, obviuosly, we need to discuss the reg NOT our wishes as they are not the same, as a lot of us go above the reg as is our perogative/agreement with the paying customer

 

[kirkgas]

it is all about judgement, here is a scenario:
YOU fit a cooker yesterday, new pipe new appliance, NO drop allowed, i go back today, it is now EXISTING CARCASS WITH EXISTING APPLIANCE i am allowed 4/8mb drop depending on meter, HOWEVER my engineering judgement would have me questioning why i can observe and leave a 3mb drop, as it is now all existing, there is something wrong with what you did yesterday that is obvious so i would discuss my concerns with customer and ask permission to disc the meter and get you back, if they refused as my explanation would say legally i can leave it but i know there is something wrong somewhere if they demanded it was left i would leave it on 100 out of 100 but i would have the paperwork written well to cover me explaining everything
it comes from understanding why you are allowed a 4/8mb drop because over a period of time you get microscopic leaks where gas grease etc dries up logically it wont happen overnight, but LEGALLY is it NEW or EXISTING so you cant leave a leak and i can, simples.com

 

[GrahamM]

was also told this at college 2 years ago so that's what I'd do regardless if it is needed or not, as I wouldn't be able to sleep at night if I left a house with a drop even within tolerance unless I made sure it wasn't on carcass.

When you do your ACS you have to show competence at trace and repair and also, the college does not want multiple leaks left in the bays, so get you to trace and repair every leak no mater how small.

The crux of the matter is, as per gas rules/regs you do not need to trace and repair a leak on an installation with appliances attached as long as it is within the permissible limits. You will be classed as working competently within the regs. End of!
Wither you do or not is upto the individual or employers working guidelines.