CoatingsPro Magazine

MAR 2016

CoatingsPro offers an in-depth look at coatings based on case studies, successful business operation, new products, industry news, and the safe and profitable use of coatings and equipment.

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COATINGSPRO MARCH 2016 39 the Ecodur coating. Te team used DeWalt angle grinders with wire brush heads, hand tools, and scrapers to remove the rust and properly prepare the steel. According to Harnage, that prep was sufcient. "Te Ecodur material, unlike epoxies, only requires a NACE 2 or 3, not NACE 1, for application on steel. It has a 100 percent rate of adhesion," he said. "In addition, iron oxide is used as a colorant in the material, so it does not react to fash rust/mill scale in the same way that epoxy coatings do." Te crew also cleaned and degreased the area using a Presoco oil and grease remover. Te fve-person crew then spray applied, using Castagra spray equipment, approximately 50 mils (1,270.0 microns) of the Ecodur coating. "For the initial coating application, we could easily spray apply the coating, as there was no equipment in our way," said Harnage, adding that the initial prep and coating application on the back fantail and interior equipment spaces took approximately four days. Te Aquablocx team returned twice more to this partic- ular 1,200-square-foot (111.5 m²) area. However, prep and application work proved to be a bit more challenging once the equipment was in place. Te crew went in, around, underneath, The five-person crew used a degreasing agent to clean all areas to be coated. This job required working in many tight, although not confined, spaces, so all crew members worked in 20- to 30-minute shifts. The crew spray applied Castagra's Ecodur at approximately 50 mils (1,270.0 microns). "For the initial coating application, we could easily spray apply the coating, as there was no equipment in our way," said Aquablocx's Ed Harnage JOB AT A GLANCE PROJECT: Apply coating material to the back fantail and interior equipment spaces on an offshore oil and gas ship COATINGS CONTRACTOR: Aquablocx LLC P. O. Box 370 Orange Beach, AL 36561 (615) 484-6236 www.aquablocx.com SIZE OF CONTRACTOR: 7 employees SIZE OF CREW: 5-person crew PRIME CLIENT: Owner of specialized ship that wishes to remain unnamed SUBSTRATE: Steel CONDITION OF SUBSTRATE: New with some areas of flash rust SIZE OF JOB: 1,200 sq. ft. (111.5 m²) DURATION: Application in stages over ~4 months UNUSUAL FACTORS/CHALLENGES: » Testing of the material on steel plates on a dock adjacent to the ship was required prior to receiving approval to use the material on the ship. » The back fantail area was flooded right before the final application of Ecodur; the ship was listed to port side and then to starboard side to allow the coating application to occur. » The crew only had approximately 36 hours to finish before the ship was set to leave the dock. MATERIALS/PROCESSES: » Prepped the areas using DeWalt angle grinders, hand tools, and scrapers » Cleaned the areas using a degreasing agent » Spray-applied Ecodur at approximately 50 mils (1,270.0 microns) » Returned to the ship once the equipment was placed; repeated the prep and cleaning process » Applied approximately 50 mils (1,270.0 microns) of Ecodur using brushes and rollers » Returned to the ship one final time for touch-ups and final application of Ecodur; repeated the prep and cleaning process SAFETY CONSIDERATIONS: » Monitored all workers in tight spaces, and the crew members worked in 20–30 minute shifts due to heat although it was not a confined space » Wore 3M protective coveralls and 3M face masks, as well as hard hats, steel-toed boots, safety glasses, and gloves

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