Materials Performance Supplements

TANK 2018

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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18 MAY 2018 W W W.MATERIALSPERFORMANCE.COM TANK CORROSION CONTROL SUPPLEMENT TO MP Thorpe Plant Services FRP ASME Section X vs. ASME Section VIII Steel Tank W hy do som e equipm ent d e si gn en gin e ers in c orro sive environments prefer steel alloys for material of construction over fiberglass reinforced plastic (FRP) for tank and pipe fabrication? This mindset could be attributed to limited education, exposure, and experience by these engineers regarding the benefits of fiber- glass composite design and fabrication. Thorpe Plant Services has innovated solutions regarding engineering design build for both atmospheric and pressure tanks using FRP for both short- and long-term economic benefits. FRP has many benefits vs. steel alloy fabrication. FRP materials offer long-term corrosion resistance both internally and externally. They are terrific in most acid, caustic, brine, chlorine, and waste- water streams. When chlorides are present, the fiberglass compos- ites will outperform any stainless steels from corrosive attack. FRP has excellent tensile strengths, which offer outstanding structural characteristics from a design standpoint. FRP tanks and piping are lightweight in comparison to steel tanks, therefore often allowing engineers to reduce the structural steel support requirements. This can lower overall construction costs and offer cost savings in crane lifts and freight. Fire retardant resins can be used to meet f lame spread and smoke generation requirements. FRP used in outdoor environ- ments are designed using gel coats or UV inhibitors on the ex terior layers. This offers excellent performance vs. painting for long-term maintenance performance, when combatting UV and other envi- ronmental attack. Finally, all fiberglass composite systems can be easily repaired to extend their life cycles. Results can vary, depend- ing on process conditions, but customers should reasonably expect 20 to 40-plus year life cycles. These types of engineering and eco- nomic benefits are being offered by Thorpe Plant Services with 30 to 50% savings vs. other metal alloys. Thorpe Plant Services is one of only two companies that are dually accredited in both ASME RTP-1 (up to 15 psi) and ASME Sec- tion X Class II (up to 250 psi) for FRP vessel fabrication. In fact, Thorpe was the first company in the world to be successfully qual- ified for ASME Section X Class II fabrication. We have successfully maintained the certifications since 1991. Additionally, in 1975 we developed and patented ring oblation technology that allows for shop fabrication and field erection of vessels up to 57 ft in diameter. This technology is still a widely accepted means of installing high-capacity FRP vessels. • Thorpe Plant Service—A Leader in Composite Fabrication and Field Services for your Corrosion Environments! • ASME RTP-1 and ASME Section X Code shop • 400,000 ft 2 of indoor fabrication at three facilities 6833 Kirbyville Houston, TX 77033 Tel: +1 713-644-1247 Email: Web site: • Wide range of tanks sizes from 2 to 100 ft in diameter • FRP ablated tanks from 18 to 57 ft in diameter • Large field filament wound FRP tanks up to a 100-ft diameter • Fiberglass fabrication using both filament wound and contact molded methods • Fabrication of FRP piping and duct systems • Dual laminate pipe, duct, and tanks • Large, safe, skilled work force • Experienced technical staff: engineers, designers, planners, QA/QC, project managers, and safety team • Wide range of comprehensive material offering for your most corrosive environments As a leader in fiberglass composite fabrication for both tank and piping systems, we can offer a "single source" approach with our field ser vices. Please feel free to visit our web site: www. for further details on fabrication and field ser- vice capabilities. Remember there are three keys for a successful project: 1) proper engineering/design and scheduling, 2) proper material selections, and 3) safe, skilled craftsmen.

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