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HMS Hood by Dan Vadas - FINISHED - Halinski - 1:200 - CARD


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On 6/6/2018 at 12:19 AM, JerseyCity Frankie said:

Funnel walkways?! Ugh, I don’t want whatever job those walkways entail. I have to imagine it was solidly coated in inches of black soot. The interiors or upper surfaces of the funnels of large ships are not well documented and I would like to know more about them. I know that with steam powered ships their height is a factor of the physics of the rising column of hot air and steam and that forced draft funnels add complexity and machinery to the interior of the funnel. I would love to hear a lecture on the inner life of big ship funnels. Anyone know of any source material on the subject?

Funnel walk ways would have been used by stokers to put the funnel covers on when the boilers that the particular funnel serviced were shut down. The reason for the covers was to prevent outside moisture from dripping down inside the funnel and mixing with the remaining residual soot. The boilers burnt FFO or furnace fuel oil which has a heavy Sulphur content. This Sulphur content in the soot when mixed with any water would produce a mild sulphuric acid which would attack the exposed external boiler piping. The removal of soot build up would normally be carried out with a soot blow, but only with permission depending on direction of travel and prevalling wind conditions. That crowd on the bridge did not like to be covered in soot, especially during daylight hours, so we would blow soot just after dark and before dawn. It was also very nice to sometimes see this crowd annoyed especially if they were wearing tropical whites. Pay back can be a b**ch. Some times it just happens only following the Engineer's orders. Daily soot blows would not remove all the accumulated soot, this would be done during the self maintenance period and be termed a boiler wash down. External panels removed and hidden and ingrained soot externally washed out using a high pressure wash. Once this has been completed tubing where it enters or leaves a steam/water drum could be inspected, for erosion, corrosion, caustic embritlement, necking or deformation of the piping.

Edited by rpeteru
gramar , content
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  • 4 months later...

Matt,

 

On the Halinski website, there are directions for ordering directly from them. They will send you a quote, which you then have three days to accept or reject. I have purchased from them direct myself.

 

Cheers!

Chris Coyle
Greer, South Carolina

When you have to shoot, shoot. Don't talk.
- Tuco

Current builds: Brigantine Phoenix, Hawker Hurricane

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