Location: Shaybah, Saudi Arabia
Coating: Mascoat Industrial-DTI
Reason for application: Corrosion Under Insulation (CUI) & personnel protection
Controlling temperature in the Middle East is an unrelenting task. Scorching air temperatures combined with hot refining processes in industrial facilities can result in extremely hazardous working environments. When the ambient temperature is hovering just above 120?F (49?C), achieving personnel protection (<140?F or 60?C) is nearly impossible. A large production facility (over 750,000 bbl/d) in Shaybah, Saudi Arabia was trying to overcome this issue, while at the same time trying to figure out how to reduce rampant CUI within the plant.
After discussing insulating coatings with a Mascoat Specialist, the company wanted to use Mascoat’s Industrial-DTI’s effectiveness on a TEG Heater Lean/Rich Glycol Exchanger. The exchanger’s surface temperature before being coated with DTI was 230°F (110°C) and was covered with CUI. In June of 2010, the equipment was turned off to remove the existing insulation and corrosion, and the surface was prepped and primed.
Since higher temperatures aid in the coating’s dry time, the unit was put back into service and allowed to reach its operating temperature, 230?F (110?C). To make the exchanger’s surface as close to ambient temperature as possible, the team applied a recommended 200 mils (5 mm) directly to the hot surface without shutdown. After application, the surface temperature was measured at 129°F (54°C), just a few degrees above the ambient temperature.
Mascoat was able to meet and exceed the personnel protection guidelines of the facility and with DTI’s ability to bond directly to the primer, CUI will not be an issue in the future. The company looks forward to using Mascoat’s coatings on future projects.