CoatingsPro Magazine

NOV 2015

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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60 NOVEMBER 2015 COATINGSPROMAG.COM and risers all day while lugging around heav y blast hoses." Spent blast media, coatings, and residue were collected with ARS Recycling Systems equipment. Te spent coatings were treated with FESI-BOND, a latex-based coating designed to convert leaded paint by Forrester Environmental Services, Inc. (FESI) "to a non-hazardous waste character upon contact," according to the manufacturer. Te treated material was placed into approximately 36 55-gallon (208.2 L) steel drums, labeled, and disposed of in accordance with environmental regulations. A third-party inspector checked and confrmed that this tank, though no beauty pageant contestant, received the framework for a fawless foundation. That Windblown Look Te south end of Long Island can get very windy, so the A lpine crew was not surprised that the roof containment tarps came loose a few times. "Generally, what helps keep any containment system strong is if you use one large tarp, or as few as possible, and tie them down real tight," Scaturro said. "On this project, since the rooftop communication equipment couldn't be moved, we had to employ smaller tarps. Tat allowed the wind to come through and rip them open a few times. Having worked on this tank before, we planned for it as much as possible and built a little extra time into our bid." But one October night, a powerful windstorm ripped through the area. Te next morning, the crew arrived to see the entire rooftop containment system and huge chunks of the shell containment system fapping in the breeze. Hey, that windblown look is great for fashion models' hairdos — not so much on a 182-foot (55.5 m) containment system! "Te roof was subjected to 45 mph [72.4 kph] sustained winds for several hours and gusts up to 60 mph [96.6 kph]," said Scaturro. "We lost a lot of tarp, but that's exactly what the scafold system is designed to do: Release the tarps during very high winds instead of damaging the tank or scafolding. Tat said, the windstorm set us back two weeks." A lpine needed a plan to make up lost time — and quick! With his company's reputation on the line, project manager Ofsharick stood square in the spotlight. Ofsharick huddled with Scaturro and the A lpine crew and came up with an ingenious solution. Te men would work longer shifts and clock in on Saturdays until they brought the project back on track. In return, A lpine would put them up in a nearby hotel to eliminate a daily commute that totaled two hours…on a good day! No Fading Beauty To help achieve proper minimum steel surface temperatures for coatings applications, the crew fred up A llmand 500,000 BTU space heaters at the beginning of each shift. For all coatings used in this project, 35° F (2° C) is achievable, according to Tnemec product data sheets; the crew used the space heaters to achieve that. Te crew also used a DeFelsko PosiTector DPM to check relative humidity, air temperature, surface temperature, and dew point temperature. Satisfed with ambient conditions, the crew used the Graco King sprayers armed with #317 tips to lay down a single pass of Tnemec Hydro-Zinc series 94-H2O at 2.5–4 mils (63.5–101.6 microns) dry flm thickness (DFT). " Tnemec 94-H2O is more or less our answer to galvaniz- ing," said Phil Gonnella, Tnemec New York area manager. "It's not the same but it gives excellent corrosion protection. You're not going to galvanize 182 feet [55.5 m] up in the air." After allowing the 94-H2O to cure (approximately 16 hours at 35° F, or 2° C, as per Tnemec specs), the A lpine crew used the same rigs and spray tips to apply a 4- to 6-mil (101.6–152.4 microns) DFT intermediate coat of Tnemec Typoxy Series 27 polymide epoxy in a single pass. Te intermediate coat primarily protects the zinc by providing a moisture barrier, according to Gonnella. But the Series 27 epoxy itself would need protection to keep this tank from losing its looks over time! "Epoxies have many great characteristics but typically have poor color and gloss retention in the sun," said Gonnella. "Since this tank is completely exposed — and in the middle of town, no less — we needed to protect it from the sun." The client chose the light blue color of the tank, which isn't "going to turn heads, but it's going to last for years and years," said Alpine Co- Owner Sam Scaturro. At 182 feet tall (55.5 m), s afet y wa s a mus t. Crew m emb er s wore fall protec tion, hard hat s, steel-toed boot s, and safet y gla sses, a s well a s f u ll-face re s p irato r s w ith d us t p ar ti cu l ate o r g an i c v ap o r car tridges when required. Long Island Water Tank

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