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Scotch Marine Boiler

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SandCam:
 :ThumbsUp:

Hi Bob,

That looks like it should work just fine.  :bandrock:

Just thought it was worth checking before you got too far in to the build...  >:D

Been there... got the tee shirt and the video.

I think your dimensions on the latest PDF should get some of the metric guys thinking. He He... Nice one !!!!!

Keep happy.

Sandy.

steamer:
Hi Bob,

Not a slight in the least friend.....I have visions of fig drawings from Section 1 dancing in my head from my boiler build.   I sized my ends on my watertube boiler to not need stays ( 5" steam drum)   .....was just curious to compare and contrast say Aussie techniques/code verses those stateside.....Again just curiosity.

Thanks!


Dave

Maryak:
Hi Guys,

Geez am I glad I did not go for anything bigger. This really does not fit my lathe without removing things like the tailstock.

A couple of shots of machining the furnace tube. Why, because the piece I was given was 3000psi boiler tube and just a tad oversize for this boilers needs.

Outside



Then Inside.




Next comes the tube plates.  :insane:

Best Regards
Bob

swilliams:
I'm following Bob, trying to learn a little more about boilers; a subject I've got precious little experience (knowledge) with.

First question: what goes on with these model steel boilers after 10 years or such? Do you have to retest them regularly to make sure they haven't rusted to a point where they become dangerous?

Second dumb question: any idea what you want to drive with this beast?

:cheers:
Steve

Maryak:

--- Quote from: swilliams on July 28, 2012, 11:17:04 AM ---First question: what goes on with these model steel boilers after 10 years or such? Do you have to retest them regularly to make sure they haven't rusted to a point where they become dangerous?

--- End quote ---

Hopefully if you either keep them totally full of water with a ph of 10.5 or alternately store them completely dry providing mild heat, ( a low watt incandescent light bulb), and allow for air circulation they should last around 30 years. A hydraulic test to working pressure every 12 months and a test to 1-1/2 times working pressure every 2 years followed by floating the safety valves and finally an accumulation test every 5 years to make sure the safety valves can clear the over pressure with the boiler at full power.

The fire side should also be regularly cleaned especially if using solid fuels as the combustion by products block tubes and also allow the formation of sulphuric acid dependent on things like the dew point and condensation during light up and after shut down.


--- Quote ---Second dumb question: any idea what you want to drive with this beast?

--- End quote ---

This



Plus I'm messing about with a compound twin generator.

Thanks for asking. There's no such thing as a dumb question. :)

Best Regards
Bob

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