Materials Performance

APR 2017

Materials Performance is the world's most widely circulated magazine dedicated to corrosion prevention and control. MP provides information about the latest corrosion control technologies and practical applications for every industry and environment.

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46 APRIL 2017 MATERIALS PERFORMANCE NACE INTERNATIONAL: VOL. 56, NO. 4 Mentors Make a Difference Find a mentor. Be a mentor. nace.org/BeAMentor COATINGS & LININGS ESSENTIALS Continued f rom page 45 e guide also presents a data table with the estimated material cost per square foot for particular paints/protective coatings based on a typical DFT for that coating. Coatings listed include various acrylics, alkyds, epoxies, polyurethanes, siloxanes, zinc-rich coatings, and others. Additionally, data tables are presented for non-material costs for shop painting and field painting, which include costs per square foot for surface preparation, applica- tion labor for various types of shop coatings (one-pack products, two-pack epoxies and urethanes, zinc-rich primers, and plural component spray) and field coatings (one- pack brush/roller and spray, two-pack spray epoxies and urethanes, spray zinc-rich primes, and plural component spray); equipment; and other related costs. e authors comment that the practical life of the coating and the cost of the repainting steps will vary depending upon whether the original coating was applied in the shop or in the field and provide an example of cost estimates for a typical maintenance paint- ing sequence for both shop-applied and field-applied original coatings. To compare the costs of one coating sys- tem to another, Helsel and Lanterman com- ment that the time table for maintenance painting, the number of maintenance paint- ing cycles required to achieve the struc- ture's desired life, and the cost of these painting operations at current cost as well as net present value and net future value, should be noted. e guide provides calcu- lations to determine net present value and net future value, along with examples. With this information, the cost of a coating sys- tem for long-term protection over the structure's life can be determined, which gives the user a comparable basis for select- ing a coating system. Robot Paints High-Rise Buildings An innovative robotic system, co-developed by ELID Technology International (Manila, Philippines) and Nanyang Technological University, Singapore, can apply new coats of paint and clean building exteriors using water jets. OutoBot, a patent-pending auto- mated unit built in Singapore, is expected

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