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SITUATION
A client was experiencing costly abrasion and corrosion issues with their offshore modules. The converted sea containers are used as offices, mess halls and first aid rooms on offshore rigs. The steel cable that is secured to the lifting points of the modules and used to crane the modules into position rubs against and strips the paint off the roof of the module. Given the environment, salt water quickly corrodes the exposed steel. This leads to considerable cost in refurbishing the damaged modules as well as downtime whilst new modules are brought onto site to replace the damaged ones.
SOLUTION
After discussions with the client and finding out their specific needs, environmental conditions, and usage, it was decided the LINE-X XS-350 would be the most suitable compound for the job. XS-350’s unrivalled strength characteristics and supreme resistance to corrosive chemicals made it an ideal choice in an environment where salt water quickly corrodes any exposed material. The area to be LINEX’d would include the roof of the module and down all the sides approximately 300mm. The Application of the LINE-X will be 3mm except for the corners where the mounting pins are located. Due to tolerances of the pins this area will be coated only 1mm – 2mm thick.
The first step is to mask up the module to protect it when blasting. There are two reasons for blasting the steel, one is to get rid of the existing rust/paint and the other is to increase the surface area of the steel, creating a stronger mechanical bond. LINE-X Fast Cure Primer (FCP) is then used to add a further strength to the LINE-X bond. The LINE-X is then applied starting with the thin coat around the mounting pin, then building up to approximately 3mm on the roof and sides of the module. A UV topcoat is applied immediately after the LINE-X to prevent the colour fading from exposure to the sun.
RESULTS
LINE-X provided a high impact and abrasion resistant coating to the roof of the module, greatly extending the lifespan of the modules. The procedure allowed the wire cables to be left on the roof of the module without the worry of rust and corrosion, saving the company downtime for repairs. The client is very happy with the results.
