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jgallaway81 wrote:...
Also, I am surprised that any road would suggest venting steam pressure on a boiler that is in danger/process of having of crown sheet failure. As the steam vents, the pressure is reduced, causing liquid water to vaporize into more steam. Therefore venting steam pressure could accelerate a boiler explosion.
jgallaway81 wrote:What needs to be addressed, is how long does it take for the firebox sheets to cool enough after a fire has been dumped, for a catastrophic explosion to be impossible? IE, how many seconds after the fire is dumped can the steam pressure still cause the soften steel to rupture, before the steel cools enough to gain back sufficient integrity. I realize this would depend on a) boiler pressure at the time b) temperature of the fire... idle/banked/full draft.
GSC wrote:...
Unlike compressed air, steam keeps expanding until it reduces itself to atmospheric pressure of 14.7 psi (at sea level).
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