Using plural-airless spray equipment, the first layer of PITT-CHAR XP epoxy intumescent coating was applied and steel mesh reinforcement was installed on the flange tips to the UL 1709 2-hour fire rating. A second layer of the PITT-CHAR XP coating was applied over the mesh and rolled to an aesthetic finish. Lastly, a layer of urethane topcoat was applied to protect the coating system from high humidity and sunlight in the coastal region of Columbia where the refinery is located.
PPG chose the PPG HI-TEMP 1027 coating as a high-value solution for the vessel. The vessel was blasted with non-metallic grit to ensure good adhesion and then coated with other products.
Surfaces were prepared by abrasive blasting to Sa2 according to ISO 8501-1. A layer of SIGMACOVER™ 522 primer was applied to 75-100 microns (3-4 mils). FOAMGLAS® was installed to insulate and protect the tank against temperatures of -170°C/-274°F due to the propane gas storage. For fire protection, the legs and sphere were covered with PITT-CHAR XP. An artistic finish was painted using SIGMADUR™ 1800 at a thickness of 80 microns (3.1 mils).
As they face increasing operational costs, companies like Gasunie rely on PPG to provide the most effective, long-term protective solution. After 22 years’ service, the SIGMALINE 403 coating showed very good performance without any coating defects.
SIGMASHIELD 880 coating was selected because of its abrasion- and corrosion resistant performance, easy application characteristics and as it can be rapidly immersed into splash and tidal zones. Minimal surface preparation was required for the Pertamina jetty, the SIGMASHIELD 880 coating’s ability to be applied to a damp surface, and prepared using hand tool chipping and a wire brush to ISO St2 standards, saved labor and time. A single coat, 425 microns (17 mils), was applied.
SIGMASHIELD 880 coating was selected because of its abrasion-, corrosion- and seawater resistance, its faster drying time and its high film thickness in a single coat. The tight spaces and convoluted geometry of the Petramina fender structure required a coating that could be applied with ease and also reduce the time interval to recoating. SIGMASHIELD 880 coating was easily applied using airless spray and achieved the necessary thickness to provide durability in a single coat.
The SIGMAFAST 278 product, with its innovative phenalkamine technology, provides excellent protection for a number of different environments and was chosen as the optimal solution from the PPG range. The coating is easy to apply with airless equipment and provides excellent fast-drying times, being touch-dry after 1 hour and ready for overcoating after 2 hours, resulting in a quicker application process.
Rand Water is the largest bulk water utility in Africa and is one of the largest in the world, providing bulk potable water to more than 11 million people in Gauteng, parts of Mpumalanga, the Free State and North West – an area that stretches over 18,000 km2. API required a partner with the capability to provide just-in-time coating deliveries and solutions that met international standards for potable water pipelines.
On this project, as with many others, the challenge was to deliver the most cost-effective system compared to alternatives, supported by highly technical solutions, technical support and advice. The overall aim for the pipeline refurbishment was not simply a ‘quick-fix’ but to offer a long-lasting solution that would help reduce the total cost of ownership. The SIGMALINE 415 epoxy coating was identified as the ideal solution.
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