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Anybody watch \"Mythbusters\" last night?

Last night's "Mythbusters" program featured what would happen if you plugged the T&P valve and disconnected the safety controls. Some cuts from "Danger Lurks", the old industry safety flick were shown along with their usual mayhem. They sent a 30-gallon electric waterheater 500' straight up, then built a shanty with a California code roof around a 40 gallon, of course, Buster, the crash-test dummy was seated beside this disaster-in-waiting, then they plugged the T&P, and disabled the safety controls. The heater "launched" at 300+ PSI, and predictibly demolished the shack, punching thru the roof like wet kleenex, and went over 500 feet straight up. Buster was thoroughly "steam cleaned". BTW, 300 PSI is higher than the standard boiler pressure used on most steam locomotives! Graphic demo of what a badly installed, tampered-with water heater could do.

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