Well done, please don't worry much about the people complaining, this is about Gas and its a dangerous thing. Please take your time and explain properly for our safety 🙏
thanks again legend. you're really helping out the new engineers do things the right way. we need more people like you who are genuinely helpful and not just talking nonsense just to sell products! Many thanks!
Nice one Derick seems strange you not waffling. Like the new 10 min format and glad you got rid of the background music, much clearer without it. Thanks Rick Kirk
Thank you So drop can not be on pipe work or meter Then if we have drop permissible System is pass but we need to actually isolate the appliances and make sure drop was on them not on pipe work or meter So In reality Tightness test does not really says if drop is on meter or appliances or pipe work Is for whole system So if meter is leaking or pipe work Then we only find out by isolating the appliances But again. Even when we do that Then we need to do tightness test stage by stage of installation by isolating the part of system and eventually use electronic gas leak detector. To really find out where the leak is Weather on pipe work or meter And that’s also proses of finding leak and if is meter then to report it and get it replaced or fix the section of pipe work which is leaking
Great video. Short and to the point. The nightmare question..... what classifies as an existing installation, not new. Always a question I get asked. Honestly, I don’t know the definitive answer. 🤷🏻
So are you saying if there is appliances connected , we are allowed drop , then what about if there is appliances connected but I turn off the appliances gas valve and there is drop on the pipe work but no smell but still same old installation?
Hi Derek I see you're using cura ldf. I was told by my inspector on my gas safe inspection that you can only use rocol. I asked him why do they sell the other brands and he says he doesn't know and doesn't care.
The problem with this table and the IGEM/UP/1B, there is not actually a requirement for us to prove the leak is on appliances or pipework, according to the IGEM and Gas Safe. We’ve been having this debate for years which has resulted in a meeting with IGEM a couple of months ago to clear it up. The answer is there simply is no logic behind the fact that you can have a leak on existing pipework with an appliance connected to it unfortunately. It all harks back to a time long ago when all this research on leak rates was undertaken. The new version of the UP/1B has quite rightly proposed to remove this table, but we are just waiting to see if this will stick after the ‘industry’ review?
@@tomkatgastraining yes indeed, they are proposing to go down the same route as the LPG criteria, whereby you can apply more than the 1mbar, if you are prepared to calculate the IV. Then you can apply leak rates based on IV, which makes a lot more sense to me.
Hi, great video. I just want to query the permissible drop process as this is different to what I was taught and what gas safe technical have told me. I was told it has passed a tightness test if it falls in the permissible drop criteria for that installation and further investigation is not required ie attempting to trace a leak. I was told that an isolated appliance is still a connected appliance so the permissible drop would still be allowed with appliances isolated and only if you disconnected all appliances and tested would you not be allowed a permissible drop. I'm not trying to be smart here, I'm genuinely trying to clarify in my own mind, the best way of doing it as I can see the point of both sides here. Especially if a landlord complains you have capped his tenant off and have quoted him for a very expensive repipe then another engineer says you're wrong and turns it back on. Any info appreciated
The regs are quite clear it says permissible drop with appliances connected and zero drop on the carcass. If you watch my video on the gas leak we found at the RUclipsrs house you will see how important it is if you find the drop on the carcass.
@@philipcooper4136 connected is it was gas going to it isolated means you have turned the gas supply off at the service valve and of course disconnected means removed from the gas supply
If it’s dropping on the let-by you take it to 20mbrs and time for 2 minutes to see if you have a leak there is no permissible drop for let- by just permissible rise as the test is just proving it’s not passing
So you divide top and bottom by 2 after adding them then 2mins then do same and work out score. So eg first reading 21 top 20 bottom add together 41 divide by 2. 20.5 then second reading 20 top 19.5 bottom add together 39.5 divide by 2 = 19.75 then 41-39.5= 0.75 drop which is ok tbf
Hi Derek, have my 1st re-assessment in October so am just using your videos to jog my memory, but have found them to be really straightforward, where things need to be explained it’s done simply - so as not to end up feeling blinded by science ( regs or bs….) - thank you. Also considering they are freely available to all and you ask for and respond to comments why individuals find the need to be critical or negative says more about them than you. Anyway thanks again.
Thanks Derek I am currently training to be a Gas engineer through Access Training and this is so helpful and actually better than the webinars I attend. feels easier to follow because its such a short period of time.
![Yailin La Mas Viral, @kreizyk.official - Dale 2 (Remix) [Video Oficial]](http://i.ytimg.com/vi/JaYHBzgqz94/mqdefault.jpg)
Well done, please don't worry much about the people complaining, this is about Gas and its a dangerous thing. Please take your time and explain properly for our safety 🙏
thanks again legend. you're really helping out the new engineers do things the right way. we need more people like you who are genuinely helpful and not just talking nonsense just to sell products! Many thanks!
Great .. keep them coming .. you helped me pass all my exams just before Christmas .. just waiting for my gas safe number now.
Congratulations and welcome to the world of gas 👍🏻
I love dereks videos always easy to understand nice and clear well explained thank you derek your a star.
As always, instructive, informative and just great; thanks for the time and effort. Much appreciated
Brilliant video as usual, very good.
These videos are like im back in the classroom 👌🏻
Well done Derek, I have been in the gas industry, in a technical capacity for 55 years and recognise a genuine professional.
Excellent video Derek, well explained in under 10 minutes. 👍👍😀😁
That was one of the best if not the best explanation
Great video Derek, This is fantastic for my revision, can you do a 10min video on flue and chimney
Excellent video. Full of information. Thanks Derek 👍😃
This guy is amazing ! So much useful information for newbies ! Thank you !
Great vid thanks Derek 👍
I like the longer version you go in to more detail.
But still great
Thanks mate
Thanks Derek , enjoyed to listen & watch
It’s amazing full of knowledge Video .Thanks Derek
Brilliant video again Derek. 🙂
brilliant 👏
Good video as usual.. but you have to connect continuity bonds when testing the ecv for let by with LDF..
Thanks it was just lovely
It’s amazing video full
Of knowledge
Thanks Derek
The penny is dropping with the Tightness test now. Great Vid
Definitely starting to get it! Thanks Derek!
Nice one Derick seems strange you not waffling. Like the new 10 min format and glad you got rid of the background music, much clearer without it. Thanks Rick Kirk
Brilliant mate. Clearly explained!
Tanx for the upload excellent information 👍
Thank you for the video..
Thanks Derek great video 🙏👍🙏👍
Thanks derek.
Excellent explanation 👌
Thanks for another brilliant video
Great video helps a lot👍
Thomas Bradwell
Thanks Derek
Thanks, great vid. Waffle or no waffle.👏💪🛠
First class presentation
Please can you us a video about boiler fault finding because you are excellent teacher
awesome video yet again
Hi pal, great video! Teach commercial too? If so, could you do a video on commercial tightness testing?
It’s on the to do list 👍🏻
Top presentation!
Thank you
So drop can not be on pipe work or meter
Then if we have drop permissible
System is pass but we need to actually isolate the appliances and make sure drop was on them not on pipe work or meter
So
In reality
Tightness test does not really says if drop is on meter or appliances or pipe work
Is for whole system
So if meter is leaking or pipe work
Then we only find out by isolating the appliances But again. Even when we do that
Then we need to do tightness test stage by stage of installation by isolating the part of system and eventually use electronic gas leak detector. To really find out where the leak is
Weather on pipe work or meter
And that’s also proses of finding leak and if is meter then to report it and get it replaced or fix the section of pipe work which is leaking
Great video. Short and to the point. The nightmare question..... what classifies as an existing installation, not new. Always a question I get asked. Honestly, I don’t know the definitive answer. 🤷🏻
New is when you have just installed it existing is when you haven’t installed it 👍🏻
Nice one Derek , any length of video is fine by me....👍
Great video
Thanks
Top video again, thanks .
Great video, you mentioned let by test less than 0.25 on a U gauge, but the gauge readable movement (GRM) is 0.5?
Thanks Derek
i can smell gas outside when the boiler is trying to fire( purge) obvously its passing gas valve. now do you let that go? even if its within regs?
great !! another good one ...
So are you saying if there is appliances connected , we are allowed drop , then what about if there is appliances connected but I turn off the appliances gas valve and there is drop on the pipe work but no smell but still same old installation?
No drop on any carcass new or old. Permissible drop is only allowed with appliances connected and no smell of gas
👍 Derek
In the last scenario, who here would feel comfortable with an 8mb drop? I know I wouldn’t!
Very good
Hi Derek
I see you're using cura ldf. I was told by my inspector on my gas safe inspection that you can only use rocol.
I asked him why do they sell the other brands and he says he doesn't know and doesn't care.
He must have shares in Rocol mate. The regs don’t specify a brand and neither should a gas safe inspector.
Please do one in less then 10 minutes about ventilation.
Already have 👍🏻
The problem with this table and the IGEM/UP/1B, there is not actually a requirement for us to prove the leak is on appliances or pipework, according to the IGEM and Gas Safe.
We’ve been having this debate for years which has resulted in a meeting with IGEM a couple of months ago to clear it up.
The answer is there simply is no logic behind the fact that you can have a leak on existing pipework with an appliance connected to it unfortunately. It all harks back to a time long ago when all this research on leak rates was undertaken.
The new version of the UP/1B has quite rightly proposed to remove this table, but we are just waiting to see if this will stick after the ‘industry’ review?
IGE/up/1b is up for revision this year if you look at the draft it says 1mbr drop for all meters. I think it’s to combat this problem
@@tomkatgastraining yes indeed, they are proposing to go down the same route as the LPG criteria, whereby you can apply more than the 1mbar, if you are prepared to calculate the IV. Then you can apply leak rates based on IV, which makes a lot more sense to me.
@@julianhearn1129 me too
Hi Derek, thank you for these!! Just wondering, are we expected to know pipe and drop size of by heart for the ACS exam? Cheers, Michelle
No all the ACS exams are open book so just need to understand it
great
Hi, great video. I just want to query the permissible drop process as this is different to what I was taught and what gas safe technical have told me. I was told it has passed a tightness test if it falls in the permissible drop criteria for that installation and further investigation is not required ie attempting to trace a leak. I was told that an isolated appliance is still a connected appliance so the permissible drop would still be allowed with appliances isolated and only if you disconnected all appliances and tested would you not be allowed a permissible drop. I'm not trying to be smart here, I'm genuinely trying to clarify in my own mind, the best way of doing it as I can see the point of both sides here. Especially if a landlord complains you have capped his tenant off and have quoted him for a very expensive repipe then another engineer says you're wrong and turns it back on. Any info appreciated
The regs are quite clear it says permissible drop with appliances connected and zero drop on the carcass. If you watch my video on the gas leak we found at the RUclipsrs house you will see how important it is if you find the drop on the carcass.
Your the man long video or short
Are you allowed to disconnect the anaconda from the ECV if a letby fails to spray the ball with ldf
If you are gas safe registered yes
👍 derek
Where did you get that adaptor for the digital manometer, that allows the orange hose to fit the inlet?
It came with the manometer
@@tomkatgastraining Hmm thought so :) Thanks for the quick reply
Great video!
At 8.20 if appliances are connected and there is a 3mb drop can you leave it, or do you have to isolate appliances and just test carcass?
You should isolate the appliance and test the carcass but most don’t 👍🏻
@@tomkatgastraining thanks
@@tomkatgastraining so is connected and isolated interchangeable? as in above, existing system Isolate appliances, test on carcass No Drop permitted?
@@philipcooper4136 connected is it was gas going to it isolated means you have turned the gas supply off at the service valve and of course disconnected means removed from the gas supply
carrying out a tightness test...pressure dropping during let-by test, is there a min/max permissible?
If it’s dropping on the let-by you take it to 20mbrs and time for 2 minutes to see if you have a leak there is no permissible drop for let- by just permissible rise as the test is just proving it’s not passing
@@tomkatgastraining Thankyou, love your videos!
Kaiormston 👍
👍😊
👍
Davison: Gas trainee
So you divide top and bottom by 2 after adding them then 2mins then do same and work out score.
So eg first reading 21 top 20 bottom add together 41 divide by 2. 20.5 then second reading 20 top 19.5 bottom add together 39.5 divide by 2 = 19.75 then 41-39.5= 0.75 drop which is ok tbf
Jon-Paul Ward
👍🤓👍
chris taylor
Shoqran = thank you
Dan Riglin
Mike Tinsley
Please please do commercial testing videos, all the videos seem to be aimed at domestic guys
We will be looking into at some point 👍🏻
Mike Fahy
Raza watched 31/01/2022
CH👍
Dean priest
Amman
If theirs no meter or appliance im testing that pipe work to 3to 7 bar
🙄
10mintes or more, it doesn't matter, your teaching is perfect ,if the subject needs more than 10 minutes, fine it's educational.
Thanks alot
thanks
Matthew burns
Thanks so much for this Derek, got my ACS coming up soon and these revision videos will be really handy 🙏👍
Hi Derek, have my 1st re-assessment in October so am just using your videos to jog my memory, but have found them to be really straightforward, where things need to be explained it’s done simply - so as not to end up feeling blinded by science ( regs or bs….) - thank you. Also considering they are freely available to all and you ask for and respond to comments why individuals find the need to be critical or negative says more about them than you. Anyway thanks again.
haha appreciate the shorter length without the waffle. look forward to this series, good idea. cheers mate
Solid grounding of the basics, sets the foundations for everything else 🔥 great vid Derek
Any chance on a vid covering appliance connection test as well.
Landlord gas safety certificate please.
Thanks Derek I am currently training to be a Gas engineer through Access Training and this is so helpful and actually better than the webinars I attend. feels easier to follow because its such a short period of time.
I don't mind when you waffle haha. At least you're not a boring, monotone teacher. I really like your videos and they are very educational 👍🏻
Stephen Humphreys TomKat
Thank you, Nikola Ditsov
Jason-Dean Moran-Campbell
Thank you my teacher😊
👍Sue Warrington