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Post by sawnoff on Apr 28, 2004 22:21:12 GMT
have just taken over a 3 inch burrel build with about 10% of it done, with this build there is a stainless steel boiler. i have been told to forget it and get another built in either copper or mild steel as there will be a problem with getting a boiler certificate for it.
reasons given being that certificates are required for the welds, and quality of the material used. and i dont have any of these.
is this correct? and if so can anyone point me in the general direction of a good boiler maker or a good second hand / spare one. i live in "sunny" Devon
thanks
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PJ
Member
Posts: 1
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Post by PJ on Apr 29, 2004 7:55:03 GMT
just my twopenny worth, but isnt the burrel boiler structural, and even as small as 3" should it not be in a far stronger matirial than copper (steel for example), i would investergate this furthur before proceeding.
peter
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IP
Involved Member
Posts: 72
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Post by IP on Apr 29, 2004 22:37:36 GMT
Hi
My understanding is that you will need certs for both the material and the welds / welder.
With regard to a boilermaker I have always thought that John Ellis c/o the Kinver club [ I can supply his telephone number if you wish] is a well regarded boiler maker.
Hope this helps.
Regards,
IP
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Post by Deleted on Apr 30, 2004 6:18:17 GMT
Stainless boilers are always a point of discussion and as far as I know a bit of a “no do” in England. Over here in Belgium and in our club we have several running around without problems. But there are some rules which we follow. Certified material or at least of known grade. So no hunting of the scap box. Certified welder and important during construction a follow up by the tester. Personally I see no problem with a stainless boiler but if you have one of unknown origins it might be impossible to have it tested and certified. Regards Wilfried Vermeiren users.skynet.be/modelbouw.wilfried |
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Post by Tel on Apr 30, 2004 21:33:08 GMT
I've been hanging back waiting for someone to come up with the obvious - stainless steel has very poor thermal conductivity, hence bad distortion problems when welding, apart from reducing the efficiency of the boiler.
It is also the reason why cast iron or even aluminium make better cooking vessels that stainless - tho' there are zillions of stainless ones about
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Post by Anzaniste on Nov 21, 2004 19:18:56 GMT
Only just clocked on to this one. I would suspect that crevice corrosion could be a problem. Stainless stel corrodes like mad where water is present and the supply of oxygen is limited.
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Post by alanstepney on Nov 21, 2004 21:07:44 GMT
Basically, forget it.
There are so many potential problems that you might as well save the time and energy and go for a enw boiler.
Steel or copper?
It depends what was in the original design.
Copper will cost more in material, but at least you can build it yourself.
Steel boilers have to be bought not made, to comply with all the rules and regs.
(Yes, there are exceptions, but lets keep it simple for now.)
Either can be more than strong enough for the duty provided they are designed for it.
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Post by the_viffer on Nov 21, 2004 21:58:25 GMT
According to Southern Fed rules stainless boilers are not acceptable and will not be tested full stop. I don't know but I'd guess NAME would be the same.
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