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Cooling Tower Bypass

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Case History #003   REV.04-97

LOCATIONFossil fuel power plant, U.S.A.

PRODUCT:
ARCOR™ S-30 Prime, ARCOR™ ARCTHANE, ARCOR™ S-16

PROBLEM:
Cooling tower bypass pipe was experiencing two problems: The interior of the carbon steel pipe was suffering corrosive attack from brackish salt water. The exterior of the pipe was subject to salt spray as water exits the cooling tower, corroding the pipe.

SOLUTION:
The interior of the pipe was abrasive-blasted and a three-coat system of one coat ARCOR™S-30 Prime and two coats ARCOR™ S-30 was installed by roller and brush for a total dry film thickness of 60 mils. ARCOR™ ARCTHANE was installed in expansion joints by caulking gun.

The exterior of the pipe was abrasive blasted and coated by roller and brush with two layers of ARCOR™ S-16. The pipe section exposed to the sun was coated white to reflect the sun’s rays. Total dry film thickness on the external coating was 30 mils. ARCOR™ ARCTHANE was installed by caulking gun in the expansion joints.

RESULTS:
This system was installed in October 1988. Over the years, only minor touch-up work has been performed, primarily to expansion joints.

Interior complete, exterior primed.

Application of second coat, ARCOR S-16.

Completed project.

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