Tightness testing a natural gas supply, ACS REVISION IN LESS THAN TEN MINUTES (hopefully) part 1.

[@thermion7869]

Well done Derek, I have been in the gas industry, in a technical capacity for 55 years and recognise a genuine professional.

[@suheilhanna873]

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

[@bencearns2826]

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.

[@theman8070]

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 🙏

[@richardhodgson7443]

Thanks so much for this Derek, got my ACS coming up soon and these revision videos will be really handy 🙏👍

[@gf5328]

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!

[@ImranKhan-hz8jy]

Brilliant demonstration Tomkat bless you

[@patrickbradley7191]

These videos are like im back in the classroom 👌🏻

[@joegibb3191]

Great .. keep them coming .. you helped me pass all my exams just before Christmas .. just waiting for my gas safe number now.

[@tomkatgastraining]

Congratulations and welcome to the world of gas 👍🏻

[@kyleriley8697]

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.

[@WEYHARRY1]

Brilliant video as usual, very good.

[@hdhanji8006]

Solid grounding of the basics, sets the foundations for everything else 🔥 great vid Derek

[@shokatrehman1362]

That was one of the best if not the best explanation

[@Burncash1510]

I love dereks videos always easy to understand nice and clear well explained thank you derek your a star.

[@eazyrat]

haha appreciate the shorter length without the waffle. look forward to this series, good idea. cheers mate

[@Hi_With_Roman]

brilliant 👏

[@sanjk9116]

As always, instructive, informative and just great; thanks for the time and effort. Much appreciated

[@mohammednazir8307]

Brilliant video again Derek. 🙂

[@aaronjoyce1980]

Great vid thanks Derek 👍

[@peymansharifi5833]

Thanks Derek , enjoyed to listen & watch

[@hafizimran6021]

It’s amazing video full Of knowledge Thanks Derek

[@hafizimran6021]

It’s amazing full of knowledge Video .Thanks Derek

[@DanielImmanuel2143]

Brilliant mate. Clearly explained!

[@mohammednadeem7274]

Excellent video Derek, well explained in under 10 minutes. 👍👍😀😁

[@piotrmarchwacki3414]

Excellent video. Full of information. Thanks Derek 👍😃

[@alivarol4700]

I like the longer version you go in to more detail. But still great Thanks mate

[@timjay69]

Good video, I will get my apprentice to watch it. Much appreciated

[@eyyubgasimov2204]

This guy is amazing ! So much useful information for newbies ! Thank you !

[@billy882in1]

Brilliant video Derek, that exactly what we learned in last week. 👍👍👍 Billy trainee Tomkat.

[@kiathegr8987]

Thanks it was just lovely

[@viran8121]

Definitely starting to get it! Thanks Derek!

[@monikanader9454]

Thanks Derek, another informative video👍👍👍

[@hussaingonoo8408]

Great video Derek, This is fantastic for my revision, can you do a 10min video on flue and chimney

[@stewartharrod8562]

Thanks for another brilliant video

[@muhammadAli-kd2zp]

Excellent explanation 👌

[@karl8025]

The penny is dropping with the Tightness test now. Great Vid

[@jamesturk3700]

Good video as usual.. but you have to connect continuity bonds when testing the ecv for let by with LDF..

[@aghasahib4703]

Top video. Cheers Derek

[@bestdeals2978]

Great video helps a lot👍

[@rivkiroyde4362]

Thanks Derek great video 🙏👍🙏👍

[@ek6868]

Tanx for the upload excellent information 👍

[@hoseen8404]

Thank you my teacher😊

[@andrewthomas332]

awesome video yet again

[@chrisjones4500]

Great video,thanks derek..

[@henrykstruglinski6517]

First class presentation

[@simonabel6869]

Any chance on a vid covering appliance connection test as well.

[@bryanwilliams3827]

Great video

[@mj0n4id36]

Nice video Derek. Well explained 👍🏻. The timing on which I watched this video was pretty good. ACS revision! By the way, I don’t think you waffle at all mate. Keep up the good work. Loving it. Asian Jon. Training.

[@saltnvinni1]

Top presentation!

[@suewarrington8155]

Thank you for the video..

[@7dayplumbingservices195]

Top video again, thanks .

[@NicholasVit]

Thanks Derek, Ion Vitiu 👍

[@bradp2711]

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 👍🏻

[@willlomas2725]

Cheers Derek

[@jonathanmcmahon5527]

Great video, you mentioned let by test less than 0.25 on a U gauge, but the gauge readable movement (GRM) is 0.5?

[@behzadboddouhi4135]

Another useful and interesting video by tom cat gas training .well done derek.

[@fredjennings9268]

Thanks, great vid. Waffle or no waffle.👏💪🛠

[@Bradwellify]

Thomas Bradwell Thanks Derek

[@rickkpah]

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

[@jeraldcastelino7622]

Thanks Derek

[@faridratni6799]

Please can you us a video about boiler fault finding because you are excellent teacher

[@chrisjones4500]

Thanks derek.

[@1981kurczak]

great !! another good one ...

[@onefortheroad1]

Where does it state that you need to isolate the appliances to confirm if it’s the pipe work or appliance???

[@Fedupbrummie]

Hi , if you are at an old installation let's say , you have a drop within tolerance , then you isolate all appliances , who's to say that an isolation valve could not be passing on one or all the appliances enough to make you think there is a drop in the installation pipework ? Some stuff I feel gets confusing ? Can you clarify how you would proceed , do we need to go that far ?

[@andrewalderson1]

Hi pal, great video! Teach commercial too? If so, could you do a video on commercial tightness testing?

[@tomkatgastraining]

It’s on the to do list 👍🏻

[@abdulh63]

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?

[@tomkatgastraining]

You should isolate the appliance and test the carcass but most don’t 👍🏻

[@abdulh63]

@@tomkatgastraining thanks

[@philipcooper4136]

@@tomkatgastraining so is connected and isolated interchangeable? as in above, existing system Isolate appliances, test on carcass No Drop permitted?

[@tomkatgastraining]

@@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

[@mcDarkD]

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?

[@Matteo-rs7nk]

Hi , doing my Acs atm But I don’t understand clear what happened if a let by test fail . What you need to do if you can’t fix it !!!?? Need to cap the ECV valve off and contact the gas emergency number ? Thanks

[@tomkatgastraining]

Let by fail is classed as AR. It’s only dangerous if you are working on the gas pipe is new boiler install. It’s our ESP problem so inform them of the problem.

[@uklifestyle9494]

Very informative

[@efrygasservices6169]

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. 🤷🏻

[@tomkatgastraining]

New is when you have just installed it existing is when you haven’t installed it 👍🏻

[@jamalamin082]

Quality vid

[@yensabi]

Nice one Derek , any length of video is fine by me....👍

[@user-vs5fi2vy3h]

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

[@nayzhoss8744]

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?

[@tomkatgastraining]

No drop on any carcass new or old. Permissible drop is only allowed with appliances connected and no smell of gas

[@chrisjackson6198]

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

[@tomkatgastraining]

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 KZbinrs house you will see how important it is if you find the drop on the carcass.

[@0liver0verson9]

Where did you get that adaptor for the digital manometer, that allows the orange hose to fit the inlet?

[@tomkatgastraining]

It came with the manometer

[@0liver0verson9]

@@tomkatgastraining Hmm thought so :) Thanks for the quick reply

[@shameerimranrafiq4738]

👍 Derek

[@jezlucas3878]

Dereck , are smart meters considered same as ultrasonic e6 meters in terms of permissable drop of 8bmr

[@tomkatgastraining]

If they have the same internal volume yes

[@jezlucas3878]

@@tomkatgastraining many thanks , I thought so . Only do domestic

[@jezlucas3878]

@@tomkatgastraining Ps hope alls well with you

[@asimilyas2547]

carrying out a tightness test...pressure dropping during let-by test, is there a min/max permissible?

[@tomkatgastraining]

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

[@asimilyas2547]

@@tomkatgastraining Thankyou, love your videos!

[@clemfandango8777]

Are you allowed to disconnect the anaconda from the ECV if a letby fails to spray the ball with ldf

[@tomkatgastraining]

If you are gas safe registered yes

[@michellecassar5785]

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

[@tomkatgastraining]

No all the ACS exams are open book so just need to understand it

[@warmastermoran6418]

Jason-Dean Moran-Campbell

[@davebayliss3142]

Very good

[@hatemmimouni7015]

Thanks

[@Unknown-ld2mf]

Do you go thru faults in a gas meter nd sensors on a boiler which will be in the exam I heard

[@tomkatgastraining]

Yep check out my channel

[@Unknown-ld2mf]

@@tomkatgastraining will do mate much appreciated 👍

[@AnEyeScream]

Thank you, Nikola Ditsov

[@matthewjamieson370]

Good video BTW

[@thomasblades4059]

Top man

[@martynlewis4344]

In the last scenario, who here would feel comfortable with an 8mb drop? I know I wouldn’t!

[@philipcorbett4914]

Any chance of a video on testing over 1 cubic meter 👍

[@tomkatgastraining]

I don’t think so mate I will only get about 2 views for that so not worth the time and effort 😜

[@sidco123]

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.

[@tomkatgastraining]

He must have shares in Rocol mate. The regs don’t specify a brand and neither should a gas safe inspector.

[@SuperWayneyb]

👍🤓👍

[@shameerahmed2815]

👍 derek

[@Loonzartist]

Your the man long video or short

[@manjsingh6500]

👍😊

[@julianhearn1129]

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]

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

[@julianhearn1129]

@@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.

[@tomkatgastraining]

@@julianhearn1129 me too

[@aghasahib4703]

Landlord gas safety certificate please.

[@arkwin3857]

👍Arek Winski

[@jeraldcastelino7622]

great