CoatingsPro Magazine

MAR 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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Page 24 of 84

24 MARCH 2018 COATINGSPROMAG.COM transport the blades to an offsite repair facility without incurring significant transportation costs and risks of further damage to the blades during transport. Further complicating the issue of in-field curing, many of these refur- bishment operations are conducted in the northern United States, where ambient temperatures of -15 to -25 °F (-26.1‒-31.7 °C) are common during the winter months. A third-party heating, ventilation, and air conditioning (HVAC) expert worked with wind farm operators to develop an in-field heating solution that could be rigged up right next to a turbine and allow for safe and efficient refurbishment. e process was first carried out for a wind farm operator in Minnesota. Electric heating and power genera- tion equipment was brought in on a trailer right next to the turbine. e blades were lowered to the ground, and heating ducts were introduced through the nose cone and split off into three sections, one for each blade. Work crews then entered the three blades to grind off the old fiberglass coating and apply a new fiberglass treatment. During this time, the mobile generator supplied power to the heater, which maintained a comfort- able temperature of approximately 77 °F (25.0 °C) for the work crews in each blade, and it also powered the grinding equipment, lighting, and other tools. Once the new fiberglass had been applied and the workers exited, the blades were wrapped in cement blankets and the heater increased the internal temperature of the blades to approximately 190 °F (87.8 °C). T his heating solution maintained the desired curing temperature for 8 to 12 hours, allow ing each blade to be repaired in-field and bringing the turbines back online in a shorter period of time w ith lower repair costs. is power generation and heating solution has since been conducted at other wind farms in Minnesota, Iowa, Oklahoma, Illinois, Texas, and upstate New York, with similar results. Power and heating was set up in tents just outside a manufacturing facility where workers would apply fiberglass coatings to both the inside and outside surfaces of each blade and cure them at a sustained temperature of 190 °F (87.8 °C), using a steady supply of safe electric heat. is system was also deployed to repair blades entering the Port of Houston by ship. Racks containing up to 12 blades were treated with fiber- glass and cured at the same time, using a combination of dehumidifiers to dry the ambient humid air and heaters to heat the air to the 190 °F (87.8 °C) target temperature. Partnering With a Provider e applications described in this article are but a few examples of how power and heating solutions help mitigate the operational hazards and costs associ- ated with in-field equipment repair, painting, and curing. e ultimate benefit of these turnkey systems can only be realized by partnering with a provider with the right technical, engineering, and project management expertise to execute a customized solution for your project. CP Thiago Moraes is t he sa les leader for A g g reko Nor t h A mer ica's Bu i ld ing Ser v ices and Const r uct ion business sector where he work s w it h customers to deter mine t he best solut ions to meet t heir power generat ion and temperat ure cont rol need s. He hold s a Master of Business Ad minist rat ion deg ree f rom INPG Business School and a bachelor's deg ree in eng ineer ing f rom Cent ro Universitár io do Inst it uto Mauá de Tecnolog ia. For more infor mat ion, contact: A g g reko, w w g Notes From the Field Environmentally Safe VpCI ® /MCI ® Technologies EXCELLENCE Q U A I T Y ® C O R P O R AT I O N PRODUCTIVITY INVESTMENT AND COST REDUCTION Re ad e r In qui r y at co ati n g sp ro m a m /i n q0318

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