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CASE STUDY
OVERVIEW
The ballast tanks onboard a large cargo vessel required a full refurbishment of over 6,000m² (double bottoms tanks, wings tanks and deep tank) after the original coatings had failed.
CHALLENGE
Some areas of the ballast tanks were heavily corroded with limited access.
There was also a very limited timescale for completion of this project and, as a result, grit blasting was not permissible.
SOLUTION
Water jetting – to WJ-3 standards – was utilised as the surface preparation method.
One stripe coat of solvent-free, wet & rust tolerant epoxy RS 500P was then applied, followed by one full coat of RS 500P @ 200µm.
In some localised areas, where most of the existing paint was still adherent, one primer coat of RS 500P was applied, followed by one topcoat of solvent-free, wet tolerant epoxy RA 500M @ 250µm.
OUTCOME
The work programme was successfully completed within the timeframe given and to the satisfaction of all concerned: Owner, Classification Society and Shipyard.
BENEFITS
• Solvent-free
• Wet & rust tolerant
• No grit blasting required
• No humidity or dew point restrictions
• No recoating limitations
• Reduced Health and Safety concerns and risk of Fire Hazard
• No disruption to other work ongoing nearby (including hot work)
After Surface Preparation
After Surface Preparation
During Application
During Application
Completed Application
Completed Application
Source: Chemco International Ltd
