In Situ A Corrosion Protection of Oil Risers and Offshore Piles

“In Situ A Corrosion Protection of Oil Risers and Offshore Piles"

Aghajani Koopaee, A.

MATERIALS PERFORMANCE, April 2008

Abbstract :

In situ metal or polymer-composite claddings is the best and least expensive method to prevent corrosion on Iranian oil risers and piles in the Persian Gulf, occurring due to concentration of solute oxygen, marine wave strokes, and access problems preparing surfaces and preparing coating damage. The steps of cladding method include sand blasting the riser from low tide above the splash zone, installing the metal mold around the riser, removing seawater within the mold, and closing the lower valve and opening the loop. Corrosion electrical resistance tests showed that in the polymer composite coating without the composite polymer clad, coating electrical resistance is reduced more than the polymer composite with the composite polymer clad. The results also show that the cladding system has good bonding strength to the CS substrate and the cladding system has high structural strength.