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Post by Telemachus on Apr 20, 2020 19:21:53 GMT
Let's not mention the old Swan vestas gas leak detector at this point. Works well though! years ago after I’d had gas central heating installed in the first house I ever bought (1988) I leant on the gas supply pipe and the solder joint disconnected. Lots of hissing noise! Obvs I shut off the gas at the main and contemplated re-soldering the joint (properly!) but was worried about the gas / air mixture now lurking in the pipe. So I called the installer back. I asked about this issue (gas still in the pipe + blowtorch) and he just said “oh sometimes there is a bit of a flame”. After that I was less fussed about small volumes of gas, it’s only dangerous when a large volume accumulates.
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Post by Deleted on Apr 20, 2020 19:24:25 GMT
First time I tried it on a boat was behind a gas fridge on my first narrow boat and I inadvertently set fire to the polystyrene insulation behind the lining.
Have been more careful since.
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Post by naughtyfox on Apr 20, 2020 19:27:53 GMT
Slow and steady, they shift a lot of hot air over a period. Sounds a bit like my woman!
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Post by Deleted on Apr 20, 2020 19:28:35 GMT
Thanks Black Sheep, can I just check something- can the BSS inspector not do the inspection on any random towpath location? How about if I stick the boat in a marina for a few days? It sounds as if no proof is going to be asked for regarding it being a holiday or residential boat, and that means I dont need a high-price gas-safe guy to install a Morco. Also, if a bubble tester is installed (which it will be already if the boat has a gas cooker), the you dont need a gas safe guy to check your gas install. Jesus H, who knew it was this complicated... I discussed this with our BSS chappie who is fairly sensible. He said that usually, it was obvious whether a boat was live aboard or not, by the general look of the thing / amount of clutter and possessions. Not that it mattered to him as he was gas safe registered. Anyway, this issue arises when you have the BSS done. What happens before that is only known to you. It would only ever be a problem if there was a disaster. But since you are talking about “gas pipe welding” I think it would be best if you got a professional in! But to answer your question you can have a BSS done anywhere, with the agreement of the examiner. Gas pipe welding? So why does the BSS discuss the use of compression fittings and only then to stress their visibility? ETA soldered or brazed joints not allowed!
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Post by naughtyfox on Apr 20, 2020 19:33:18 GMT
Comparison with drug barons may not be that appropriate. Spilling state secrets here but let's just say that a lot of drug barons get away with it. You occasionally get one who gets picked up but that's usually because they have irritated the boss. (see latest video on coronavirus thread)
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Post by Deleted on Apr 20, 2020 19:34:13 GMT
Oh he really hates competition doesn't he.
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Post by Telemachus on Apr 20, 2020 20:14:24 GMT
I discussed this with our BSS chappie who is fairly sensible. He said that usually, it was obvious whether a boat was live aboard or not, by the general look of the thing / amount of clutter and possessions. Not that it mattered to him as he was gas safe registered. Anyway, this issue arises when you have the BSS done. What happens before that is only known to you. It would only ever be a problem if there was a disaster. But since you are talking about “gas pipe welding” I think it would be best if you got a professional in! But to answer your question you can have a BSS done anywhere, with the agreement of the examiner. Gas pipe welding? So why does the BSS discuss the use of compression fittings and only then to stress their visibility? ETA soldered or brazed joints not allowed! That was my point.
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Post by Deleted on Apr 20, 2020 20:18:00 GMT
Gas pipe welding? So why does the BSS discuss the use of compression fittings and only then to stress their visibility? ETA soldered or brazed joints not allowed! That was my point. Incidentally back then there was this reddish-brown goop with a rather unpleasant smell that I can't recall the name of which was used in the same way as PTFE tape. I was told this isn't allowed anymore, any truth to this and if so what is the current standard?
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Post by Telemachus on Apr 20, 2020 20:26:39 GMT
Incidentally back then there was this reddish-brown goop with a rather unpleasant smell that I can't recall the name of which was used in the same way as PTFE tape. I was told this isn't allowed anymore, any truth to this and if so what is the current standard? If that’s addressed to me, sorry no idea. I am not a professional, just a gifted amateur!
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Post by Deleted on Apr 20, 2020 20:36:14 GMT
Incidentally back then there was this reddish-brown goop with a rather unpleasant smell that I can't recall the name of which was used in the same way as PTFE tape. I was told this isn't allowed anymore, any truth to this and if so what is the current standard? If that’s addressed to me, sorry no idea. I am not a professional, just a gifted amateur! Yes it was but no worries.
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Post by Deleted on Apr 20, 2020 20:37:18 GMT
Incidentally back then there was this reddish-brown goop with a rather unpleasant smell that I can't recall the name of which was used in the same way as PTFE tape. I was told this isn't allowed anymore, any truth to this and if so what is the current standard? I remember a product in a toothpaste type squeeze thing which was rust red. Might be the same thing as this gasproducts.co.uk/rocol-gas-sealant-300gm.htmlNot sure but I can't really see how anything would be specifically disallowed. Presumably the idea is that the gas joints are sealed and no leaks. Having said that if it had been proved at some stage that the reddish brown toothpaste thing turned out to be a temporary repair which failed later on it could have been disapproved of somehow. Thinking it through a bit further it does seem a bit dodgy to use a sealing compound on compression joints. The whole object of a compression joint is that you achieve a metal on metal seal via high pressure contact. If you were to introduce a sealant type product in this situation it could have the effect of defeating the purpose of a compression joint by creating a seal before the correct torque has been applied to the nuts. So yes it does make sense that such a thing would be "banned". ETA you also have the problem of olives collapsing onto the pipe from overtightening if the nuts which is where the potential for bodged repairs using a sealant could be quite a serious problem.
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Post by Deleted on Apr 20, 2020 21:03:37 GMT
There is normally a need for PTFE taps on water pipes, is there not? Also fit a petrol line 'clean' and see what happens. Anyway if there is any truth to it then a better term might be 'superceded by'. But any chandler could settle the issue, I'm sure. And its not a pressing issue (for me)!
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Post by Telemachus on Apr 20, 2020 21:12:54 GMT
There is normally a need for PTFE taps on water pipes, is there not? Also fit a petrol line 'clean' and see what happens. Anyway if there is any truth to it then a better term might be 'superceded by'. But any chandler could settle the issue, I'm sure. And its not a pressing issue (for me)! No there is not normally a need for PTFE tape on water pipes. Setting aside that water pipes are mostly plastic push fit these days, there is no need for PTFE tape on compression water pipe joints. Nor on tap fittings. If present, it is like a big sign saying “Cowboy at work”. There is obviously no need for PTFE tape on solder joints! The only time you might need PTFE tape is on a BSP threaded connection where the seal is the threads. The rest of the time, the seal is not made by the threads and tape is therefore ridiculous. (But you do see it!). As stated, only compression fittings are allowed on boat gas pipes and if you add unnecessary gunge to those, I guess there is a chance that later on the gunge will dry out, shrink (creating a leak) or flake off inside the pipe (blocking jets etc). Anyway, it is completely unnecessary.
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Post by Deleted on Apr 20, 2020 21:25:34 GMT
There is normally a need for PTFE taps on water pipes, is there not? Also fit a petrol line 'clean' and see what happens. Anyway if there is any truth to it then a better term might be 'superceded by'. But any chandler could settle the issue, I'm sure. And its not a pressing issue (for me)! No there is not normally a need for PTFE tape on water pipes. Setting aside that water pipes are mostly plastic push fit these days, there is no need for PTFE tape on compression water pipe joints. Nor on tap fittings. If present, it is like a big sign saying “Cowboy at work”. There is obviously no need for PTFE tape on solder joints! The only time you might need PTFE tape is on a BSP threaded connection where the seal is the threads. The rest of the time, the seal is not made by the threads and tape is therefore ridiculous. (But you do see it!). As stated, only compression fittings are allowed on boat gas pipes and if you add unnecessary gunge to those, I guess there is a chance that later on the gunge will dry out, shrink (creating a leak) or flake off inside the pipe (blocking jets etc). Anyway, it is completely unnecessary. The gunge was non-setting...right, time for some internet wisdom-gathering...
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Post by Telemachus on Apr 20, 2020 21:41:36 GMT
No there is not normally a need for PTFE tape on water pipes. Setting aside that water pipes are mostly plastic push fit these days, there is no need for PTFE tape on compression water pipe joints. Nor on tap fittings. If present, it is like a big sign saying “Cowboy at work”. There is obviously no need for PTFE tape on solder joints! The only time you might need PTFE tape is on a BSP threaded connection where the seal is the threads. The rest of the time, the seal is not made by the threads and tape is therefore ridiculous. (But you do see it!). As stated, only compression fittings are allowed on boat gas pipes and if you add unnecessary gunge to those, I guess there is a chance that later on the gunge will dry out, shrink (creating a leak) or flake off inside the pipe (blocking jets etc). Anyway, it is completely unnecessary. The gunge was non-setting...right, time for some internet wisdom-gathering... Well try this for starters... www.thomson-caravans.co.uk/advice/diyprojects/gascompressionfitting.htmand this forums.ybw.com/index.php?threads/ye-olde-gas-compression-joint-thread.426435/
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