Materials Performance

NOV 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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Page 19 of 72

17 MATERIALS PERFORMANCE: VOL. 57, NO. 11 NOVEMBER 2018 Information on corrosion control and prevention Continued on page 18 Cooling tower terminology and geometry. concrete throughout the exterior surface of Unit #3's shell, with a greater concen- tration on the upper third of the tower. Delaminations identif ied on the interior face of the shell by NDT also were pre- dominantly located in the upper third of the shell, which indicated that corrosion was occurring on the interior face of the shell. Results of corrosion potential tests performed at the interior face of the shell above the tower's throat (lifts 48 through 68) ranged from 0.02 to –0.61 V vs. a cop- per/copper sulfate (Cu/CuSO 4 ) electrode (CSE), which also suggested some active corrosion in the upper part of the tower. Concrete samples from the tower were laboratory tested, and results showed sig- nif icant chloride penetration to the depth of the reinforcing steel. Chloride levels were ty pically higher in the upper portion of the tower—up to 11 times more than the corrosion threshold concentration New at CORROSION 2019 Conference & Expo March 26 - 27, 2019 ▪ Nashville, TN ▪ Exhibit Hall Floor Do you currently work, want to work, or simply learn more about Coatings? This workshop will feature coatings industry experts and manufacturers who will guide you through the essential steps necessary to deliver quality coatings jobs. • Network with contractors, inspectors, and other professionals involved in coatings • Learn best practices, new techniques and emerging technologies in the industry • Earn CEUs (optional) and/or PDHs for your participation For more information on workshop details, visit Protective Coatings Workshop Network. Learn. Earn.

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