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Mule ear

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Milutin

Milutin

Chemical
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Jul 7, 2006
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Dear all

On our visbreaking fired heater we use “mule ear” type return tube header, device which connects two tubes, instead of using welded return U- bend.

During last turndown some plugs leaked during pressure testing with water. Maintenance people decided to weld plugs and solve problem.
I am not sure that welding is proper way to solve such problem. Does anybody have experience with plug welding?

Regards,

Milutin
 
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The process licensor or heater manufacturer may provide better insight regarding tube repair. Are these vertical or horizontal tubes?
 
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