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1 members (Scott35),
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Joined: Feb 2005
Posts: 693
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Boiling Liquid/Expanding Vapor Explosion
Larry Fine Fine Electric Co. fineelectricco.com
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Joined: Nov 2000
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while Larry has the correct defintion of BLEVE. I like: Blast Leveling Everything Very Effectively Don
Don(resqcapt19)
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Joined: Nov 2000
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John, So, yes, an electrical fire can easily become an explosion. In most cases the explosion at an electrical accident is not very very rapid combustion as with normal explosions. It is the result of the rapidly expaning vapor from the vaporized conductors and other materials as well as the expansion of the air as a result of the extreme heating. Don
Don(resqcapt19)
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stamcon, Please note that the link you provided is not completely correct. While the most commonly occurring BLEVEs do occur in vessels containing flammable liquids, that is not a requirement for a BLEVE to occur. The BLEVE can still occur where the liquid is not flammable. Actually the explosive force of a BLEVE in a water container is greater than that in a LP gas container. However the total damage is normally greater when the product is flammable because of the resulting fires. The only requirements for a BLEVE are: 1) closed container, 2) liquid heated above its atmospheric boiling point, 3) rupture in container that releases the pressure. When the pressure is released, the product is now instantaneously flashed into vapor. The explosive force is a function of the relative area of the liquid and the relative area of the vapor. For most flammable products this is 300 to 500 volumes of vapor for one volume of liquid. For water this is ~1700 volumes of vapor for one volume of liquid The explosive force is a result of this volume change and not of the type of product involved. Don
Don(resqcapt19)
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Joined: Oct 2004
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In freakin credible!! That was one of the most effective illustrations of arc flash hazard I've ever seen!!
The good news, it appears that the worker's PPE did it's job, as he was able to walk away and remove his burning PPE without major injury.
Stupid should be painful.
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Joined: Feb 2005
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I get "request not found" page with the first linkm and a blank download with the second. Should the "%20" be replaced with something else.
Larry Fine Fine Electric Co. fineelectricco.com
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Joined: Feb 2005
Posts: 693
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Still doesn't work for me. Is it a pop-up issue? I can see other WMVs.
Larry Fine Fine Electric Co. fineelectricco.com
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Joined: Feb 2005
Posts: 693
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Okay, I got it to work by opening WMV, and then pasting the URL into "open url...". Big pop!
Larry Fine Fine Electric Co. fineelectricco.com
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Posts: 806
Joined: October 2004
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