CLIENT:
ALON USA
Krotz Springs Refinery
Krotz Springs, LA

UNIT:
FCCU Flue Gas Heat Exchanger (vertical)
400 carbon steel tubes
2" O.D. x 9 BWG (0.148" Min. wall) x 40' long

PROBLEM:

Cracks developed in the carbon steel tubes beneath the top tubesheet to a depth of 25 inches on the vertical exchanger creating an emergency shutdown.


SOLUTION:

In an emergency response, CTI mobilized to Krotz Springs in four days after the initial contact. CTI installed 97 Shield/Seals, 30 inches long constructed from 316L Stainless Steel into damaged tubes by our HYBRID expansion method (full length hydraulic expansion followed by mechanical expansions at first and last inch). Failing tubes were returned to service.

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