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Mini-Challenge #587 - Transportation

Started 10 months ago | Discussions thread
OP gloaming Veteran Member • Posts: 4,633
Re: Mini-Challenge #587 - Transportation Entry
1

Yikes! 

I wonder who determined that the steam locomotive was safe to be around.  I can see vapour at extreme right, an indication that the boiler is under pressure.  With the engine tilted onto its side, the crown sheet inside of the firebox is exposed partially, and will be above the water level in the boiler.  If there's still a sizeable fire in the firebox, the crown sheet could melt and the boiler contents will explode outward, expanding 1600 times its liquid volume.  Yes, steam expands at least 1600 times when it is released to atmosphere if it is contained in a pressurized vessel.

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