Hi Colin. Thanks for subscribing. If there’s anything you’re struggling with then let me know and I’ll make something for you. 🙏

Thanks. This was requested by a subscriber. Let me know if you need a video on a topic and I’ll create one for you. 👍

@@passyourgas Awesome. My glaring weakness is fires. I don't do much work on them and truth be told, I struggle to even identify them. DFE to radiant to whatever it maybe.

@@raul835 Look at my channel, I’ve got a video especially on that!

kzfaq.info/get/bejne/fbWInMSQsMDSaXU.html

Hi Abdul. You’re getting a bit confused between “faults” and unsafe sits. If you have a problem working out questions like you’ve asked, then ask yourself this..”is this a DANGEROUS situation?” Your examples show one that is and one that isn’t. Low pressure at the appliance but CO readings ok .. the only problem is the low pressure..is low gas supply a dangerous situation..well it’s not, it’s just a fault. It’s going to make the boiler a bit less efficient but that’s about all. If it had affected the readings then the readings would be wrong and that IS a dangerous sit. So 1 is not dangerous. 2. Is straightforward dangerous and it’s in the list. If an appliance fails is CO test (regardless of the cause) it’s dangerous (flueless=id flued = ar). In this case at least you know it’s not the working pressure that’s a problem! So your diagnostics are halfway done! Remember…people have been working with gas for over 150 years and the Unsafe Situation guide has been compiled over that time. Only dangerous stuff is in there. Low pressure isn’t in there because it’s not dangerous on its own. It becomes a danger if the results fail ..and that is in the unsafe situation guide. Don’t confuse faults and unsafe situations..I hope that helps..I’ll answer you other question in a minute. Good Luck 🤞

Firing up all appliances when doing working pressure on a single appliance …let’s think this through as an engineer…If you put everything on then check the pressure at one appliance, and it’s low, where does the fault lie? Is it the appliance, or is the system pipe sizing to blame? You could spend 4 hours trying to adjust the appliance regulator when there’s nothing wrong with, it’s just that the pipes are too small to handle the demand when everything is on. So, it’s best to test it on its own first..that lets you know that the regulator is ok or if it needs to be adjusted. THEN do it again with everything on, that tests the pipe sizing is still delivering enough gas at maximum demand. I hope that makes sense.

Firing up all appliances when doing working pressure on a single appliance …let’s think this through as an engineer…If you put everything on then check the pressure at one appliance, and it’s low, where does the fault lie? Is it the appliance, or is the system pipe sizing to blame? You could spend 4 hours trying to adjust the appliance regulator when there’s nothing wrong with, it’s just that the pipes are too small to handle the demand when everything is on. So, it’s best to test it on its own first..that lets you know that the regulator is ok or if it needs to be adjusted. THEN do it again with everything on, that tests the pipe sizing is still delivering enough gas at maximum demand. I hope that makes sense.

@@passyourgas little by little everything is making sense to me, your explanations makes it so so clear, thank you🙏

@@passyourgas ahh I see....checking working pressure with just the one appliance fired up makes sense. Just asked the question because few engineers i've shadowed only checked with the one on but then didn't check with all of them on which i couldn't understand as i knew this test would show if the pipes are undersized, which in turn could affect co readings if that was also checked. thanks again!

🤣🤣🤣 I see it now❗️

Congratulations Barry. Thanks for your kind words. It’s a stressful time that’s for sure. I hope I’ll still be at it in 5 years when you have to refresh your memory again. Stay safe 😁

Hi Miran..I took the website down for updating so the link won’t work. I’m hoping to get it back up soon….thanks for your kind words.

@@passyourgas no worries Mr, no everyone have teaching quality and easily learn from, but Your teaching skills is amazing pal. What training centre do you teach at? I'm thinking about heat pump course after passed my acs. At the moment I'm trying to bring food on the table for the family and beside trying to make time to read and practise so I can do it and end all the stress. It's just English being my Third language, slows me down.

Hi Miran, I don’t teach at college any more, I’m retired. I do the channel just to help people like you who want a better life for their families. Keep studying, once you get your gas ticket you become a member of an exclusive club and you’ll be able to earn good money and improve the lives of your family. I wish you luck and blessings.

@@passyourgas that's very nice of you doing this to help people like me and share your knowledge and experiences with us, not every retired tutor or gas engineer would do that, I very much appreciate what you and thanks. I'll keep you advice in mind thanks. Yes why I do this so I can build a better future for myself and especially the family. I've been through lots of difficult time from young ages, it's only since I live in the UK I can concentrate on studying and gaining qualifications, isn't easy, but I do my best. I find this Acs too difficult, I just can't wait to pass it all, of course it required lots studying.

Hi again Abdul. This is a great question. Unfortunately I don’t sit on the board of the IGEM who make these decisions so I don’t know their exact reasoning, but I think I can help to clear up your confusion. If there is no immediate access to the ECV it’s a dangerous situation..no argument with that. If you go to a property and notice a situation which breaches the unsafe sits let’s say the gas leak you mention and you can’t get access to the ecv, then, because a gas leak is a problem that closing the ecv will cure the situation becomes immediately dangerous. However, if you go to a property where a flammable kitchen curtain is hanging too near to the hob rings of a cooker, then you notice that there is no access to the ecv, this means that operating the ecv will make no difference to the unsafe sit. You simply remove the curtain or move the cooker. In that case you can’t just walk out and leave things as they are, but the ecv has no influence on the unsafe sit. So you place it “at risk” of something happening in the future. In reality you would contact the supplier and get them to fix it. I hope this helps. Cheers

Hi, any gas book (viper etc) will have a list of NCS situations. They’re still relevant but they’ve just been removed from the unsafe sits area of gas. Cheers

Good question. Just buy an older Viper book, they’ll be there. Cheers

Hi Jack…sorry for that, I got better microphones for the newer stuff. I hope it helped you though. Cheers