METHOD TO REPAIR COMPROMISED INLET OUTLET PIPING
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United States of America Patent
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app pub date -
Dec 6, 2012
filing date -
Dec 6, 2011
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Abandoned
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Abstract
Pipe fractures in cooling staves of blast furnaces are a common failure mechanism Herein is a repair method for a cooling stave utilized in a blast furnace, the cooling stave having a compromised stave inlet outlet pipe attached to the cooling pipe in the cooling stave, the method comprises of the steps of inserting a rigid pipe into the compromised stave inlet outlet pipe to form a first annulus; inflating a bladder disposed inside the inner pipe and cooling stave; injecting a first uncured epoxy material into the first annulus; permitting the first uncured epoxy to cure; and removing the bladder.
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