CoatingsPro Magazine

JAN 2018

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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88 JANUARY 2018 COATINGSPROMAG.COM thickness. You can only do so much when you're painting, which is with the wet film, but you have to wait 'til the next day — eight hours minimum — to go in with your DFTs," Winter explained. ey used DeFelsko's PosiTector 6000 to confirm the dry film thickness. By the time the trough was fixed, the remaining lining was applied in the cone and down the pedestal via stages. It was time for the crew to head outside. Team Colors and Plays For the work outside, again around 20,000 square feet (1,858.1 m²), the crew had to take a bit of a different approach. "I had a day care on one side and an elementary school on the other side. Trust me: We wanted zero emission from blasting to any type of spray — anything," Winter said. To contain the blast material and potential overspray, the crew hung self-made containment with panels from Eagle Industries. A ll materials were brand new for this project because, as Winter explained, "over here, you don't take any chances. You don't want any holes and any openings — anything like that. It's a risk." It took the crew four weeks to install the containment, drilling ground anchors every 4 feet (1.2 m). And it took about a week at the end of the job to drop it for good. "It comes down way easier than it goes up," Winter said. And since there were no heav y winds or any other issues that might damage the materi- als, they were able to recycle the containment for another tank not too far away. A lthough the containment helped, it didn't control the environment. Air, heat, and humidity could still pass through the system. erefore, there was more concern on the outside of the tank for losing the blast. at meant that any area that was prepped, again to a NACE No. 2/SSPC-SP-10, had to be primed in the same day. Working from two 20-foot-long (6.1 m) stages rented from BETCO, the crew worked in vertical sections. "We were getting a couple of drops a day, meaning up and down twice on that particular run," Winter explained. First, they spray applied Interzinc 52 to an average of 3 mils (76.2 microns) with Graco 33/1 ratio airless sprayers. en they sanded the green primer The heat in Texas can be brutal, so it was important on this and ever y other projec t in the area to pay attention to safet y. The crew took hourly water breaks and shifted start times. The Interfine 1080 was applied at a full ~7-mil (177.8 microns) layer to the entire exterior of the tank. The crew used Graco sprayers 33/1 ratio airless sprayers for this stage. Wet and dry film thicknesses were tested with various gages throughout the project. Also done throughout, the crew members were sure to wear harnesses and lanyards when working from heights. Wearing Ty vek suits, safety glasses, and rubber gloves, the crew spray applied the systems outside and inside. The lining was a ~30-mil (762.0 microns) layer of International Paint Polibrid 705E. Steel Tank Coatings

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