CoatingsPro Magazine

JAN 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 JANUARY 2016 55 tower, and the stair structure. Beck Steel, Techno Coatings, and Techno West were respon- sible for the various shop and feld coating procedures. "Beck Steel abrasive blasted and primed all of the superstructure steel members. Techno Coatings applied the intermediate coat and topcoat on the ground, holding back the weld lanes. Te three coats were then applied to weld lanes after the members were fown into place," stated Birney. For the large north face glass front, Techno West, working as a subcontractor for Woodbridge Glass, surface prepared and applied all three coats in the shop, holding back the weld lanes. Ten Techno Coatings surface prepared and applied all three coats to the glazing package in the feld. For other areas, the players were diferent. "Beck Steel blasted and primed the steel for the bridge, elevator tower, and stair structure. Techno Coatings then did the feld coating of the intermediate and topcoat, as well as the application of all three coats to the weld lanes," explained Birney. In the shop, the structural steel was prepared in accor- dance with NACE No. 3/Society for Protective Coatings (SSPC) Surface Preparation (SP) 6: Commercial Blast Cleaning with an average two-mil (50.8 microns) angular anchor profle. "In the shop, Techno West abrasive blasted the bare steel using steel grit and compressed air with a blast nozzle. In the feld, however, the surface prep to the welds was done using grinders and power tools in accordance with SSPC-SP-11 Power Tool Cleaning to Bare Metal," said Birney. A s for the coatings, w ith the exception of the pedes- tr ian br idge to which a different Tnemec finish coat was applied, the same coating system at the same thickness was insta lled both in the shop and out in the field. It was only the method of application that differed: In the shop, the coatings were applied using Graco spray equipment, and in the field, the crew br ushed and rolled the mater ia ls. T he steel was pr imed w ith Ser ies 94 -H2O Hydro-Zinc, a single component, aromatic urethane coating, followed by an inter mediate coat JOB AT A GLANCE PROJECT: Shop- and field-apply coatings to tubular steel for the iconic Anaheim Regional Intermodal Transportation Center (ARTIC) COATINGS CONTRACTOR: Techno Coatings, Inc. 1391 Allec St. Anaheim, CA 92085 (714) 635-1130 www.technocoatings.com SIZE OF CONTRACTOR: More than 200 employees SIZE OF CREW: 10–12 crew members in the field PRIME CLIENT: City of Anaheim 200 South Anaheim Blvd. Anaheim, CA 92805 (714) 765-4311 www.anaheim.net SUBSTRATE: Tubular steel CONDITION OF SUBSTRATE: New SIZE OF JOB: 2,100 tons (1,905.1 metric tons) of structural steel, 1.5 miles (2.4 km) of welds DURATION: One year UNUSUAL FACTORS/CHALLENGES: » Coating system had to be easily applied both in the shop and field » Coating system had to comply with the South Coast Air Quality Management District (SCAQMD) standards for volatile organic compounds (VOC) » An exact color match was required at each of the thousands of welds MATERIALS/PROCESSES: » In the shop, prepared structural steel in accordance with NACE No. 3/ Society for Protective Coatings (SSPC) Surface Preparation (SP) 6: Commercial Blast Cleaning » In the field, prepared welds in accordance with SSPC-SP-11: Power Tool Cleaning to Bare Metal » Spray-applied coatings in the shop using Graco spray equipment, and brushed and rolled coatings onto the steel at the jobsite » Primed steel with Tnemec Series 94-H2O Hydro-Zinc at a dry film thick- ness of 2.5–3.5 mils (63.5–88.9 microns) » Applied an intermediate coat of Tnemec Series L69 Hi-Build Epoxoline II at a dry film thickness of 2–4 mils (50.8–101.6 microns) » Applied the finish coat of Tnemec Series 750 UVX at a dry film thickness of 2–4 mils (50.8–101.6 microns) SAFETY CONSIDERATIONS: » Attended special training classes for working above a live train track » Wore half-mask respirators with cartridges, Tyvek suits, hard hats, goggles, gloves, and steel-toed boots The Techno Coatings crew led the application: a primer, intermediate coat, and topcoat, all from Tnemec. They started with Commercial Blast Cleaning in the shop and Power Tool Cleaning to Bare Metal in the field.

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