Quote:
Originally Posted by john70t
^^all that worksmanship lost,....for lack of a couple of very simple release safety valves.
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Steam locomotives have pop off valves to release excess steam pressure but they can't cope with the the kind of failure that caused that boiler to explode. When the water level drops to where it does not cover what is called the crown sheet over the fire box, the sheet melts and ruptures. All of a sudden the 250 to 300 pounds of supper heated steam flashes and exits through the hole expanding explosively.
