CoatingsPro Magazine

JAN 2019

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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Page 41 of 108

COATINGSPRO JANUARY 2019 41 Safety First Ozark has four crews of people with a total of 25 employees. A ll of the employees have received their Occupational Safety and Health Administration (OSHA) 10-hour certification, and some have even received their OSHA 30 certification. e Treadways also require all employees who have been with Ozark for more than one year to be certified in lead abatement. Penny sounds like a proud mama when she describes her team members, who she affectionately calls her "redneck boys." "ey love to hunt, fish, and work hard," she explained. "I receive handwritten notes from clients about these boys — something you don't see too often anymore these days. ey tell me how wonderful and respectful the guys are. ey are talented young men." To Penny, Ozark 's employees are family, so it's no surprise she wants them safe. e Ozark team wears 3M full body harnesses and lanyards with shock absorbers when they coat a water tower. ey also use a safety line. "e safety of our employees is our number one priority," said Penny. "My husband and I think safety is super important. We replace safety lines annually and provide trolleys up and down the ropes." Ozark also offers in-house training to employees every year. For the PWSD #1 project, the three-man crew also wore gloves, masks, hard hats, and other required safety equipment throughout the job. Bowl of Steel T he inside of the water tower consists of different areas: the interior "wet bowl," the interior dr y riser, and the interior access tube. e wet bowl is the top circular dome of the tower — it's steel-welded and is where the water is stored. is area must be painted using NSF-approved coatings for drinking water. JOB AT A GLANCE PROJECT: Recoat exterior and interior surfaces of a water tower in Missouri COATINGS CONTRACTOR: Ozark Applicators, LLC 2309 Carter Rte. M Van Buren, MO 63965 (573) 323-6450 SIZE OF CONTRACTOR: 25 employees SIZE OF CREW: 3 crew members PRIME CLIENT: Missouri Department of Natural Resources P.O. Box 176 Jefferson City, MO 65102 (800) 361-4827 SUBSTRATE: Welded steel CONDITION OF SUBSTRATE: In need of maintenance SIZE OF JOB: 21,125 sq. ft. (1962.6 m²) total DURATION: 2 months UNUSUAL FACTORS/CHALLENGES: » The crew were trained to use new-to-them Series 971 Aerolon Acrylic. » The interior wet bowl coatings were in accordance with NSF/American National Standards Institute (ANSI) 61: Drinking Water System Components – Health Effects. MATERIALS/PROCESSES: » Prepared interior wet bowl per NACE No. 2/Society for Protective Coatings (SSPC) Surface Preparation (SP) 10, spray applied Tnemec 94-H 2 0 at ~3 mils (76.2 microns) dry film thickness (DFT) and two coats of N140 at 4–6 mils (101.6–152.4 microns) DFT each » Prepared interior dry riser per NACE No.4/SSPC-SP 7; spot primed and spray applied a coat of Tnemec N140 at 4–6 mils (101.6–152.4 microns) DFT » Prepared the interior access tube per NACE No. 3/SSPC-SP 6; spray applied one coat of Tnemec 94-H 2 0 at ~3 mils (76.2 microns), two coats of Tnemec 971 Aerolon at ~50 mils (1,270.0 microns) each, and a finish coat of Tnemec 1028 at ~2.5 mils (63.5 microns) » Blast cleaned tank's exterior per NACE No. 3/SSPC-SP 6; roller applied a full prime coat of Tnemec 94-H 2 0 at 2.5–3.5 mils (63.5–88.9 microns) DFT, a full intermediate coat of Tnemec 1075 at 2–3 mils (50.8–76.2 microns) DFT, and a full finish coat of Tnemec 700 at 2–3 mils (50.8–76.2 microns). SAFETY CONSIDERATIONS: » Wore 3M full body harnesses and lanyards, and used a safety line » Wore gloves, masks, hard hats, and other required safety equipment » Wore full air-fed blast hoods to blast; full-face respirators to shovel; and Tyvek suits, gloves, and an air-fed hood to apply the Aerolon Working at heights meant wearing full-body harnesses, lanyards, and a safety line. When applying the Aerolon, the crew also had to wear Ty vek suits, gloves, and an air-fed hood.

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