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Butane as a blanket gas?

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Crusader911

Crusader911

Mechanical
Joined
Nov 22, 2006
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46
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I have a client that wants to use butane as a blanket gas for an API-650 floating roof tank containing #6 Fuel Oil. Does this sound right? I usually see something inert like nitrogen being used, not a flammable hydrocarbon.
 
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Fuel gas blanketing is common, have never seen butane used.
 
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Why is a blanketing gas needed for a tank containg No.6 fuel oil..???

 
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Not sure on the reason for blanketing fuel oil but I have seen gas used as a blanket where nitrogen was not available. Still better to have a gas blanketing than air! Is the tank in a remote location?
 
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