JPCL August 2019

 
JPCL August 2019


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Lining Steel Potable-Water Storage Tanks: Benefits of 100% Solids Elastomeric Polyurethanes

by Murray Heywood, Sherwin-Williams Protective & Marine Coatings

When lining new steel potable-water storage tanks or rehabilitating existing ones, asset owners, specifiers and applicators in North America most often select epoxy linings as their standard resin of choice. However, in the Canadian potable-water storage market, many specifiers have recognized the performance benefits that 100%-solids elastomeric-polyurethane linings offer, and they have been specifying the systems for more than 25 years with admirable results. This article reviews several performance characteristics that 100%-solids elastomeric polyurethanes offer that make them a timely technology consideration.


Old and Gray to New and Green: Coatings Transform Digesters, Tank at Water Recovery Facility

by JPCL Staff

The City of Lincoln, Nebraska recently required painting services at its Theresa Street Water Resource Recovery Facility, including recoating the exteriors of three 65-foot-diameter anaerobic digesters and one 52-foot-diameter sludge storage tank. The City was looking not only to preserve these important wastewater treatment components so that they could continue to function properly for the community, but also upgrade the way they looked to passers-by. The finished product earned SSPC’s William Johnson Award for aesthetic merit in industrial or commercial coatings work, with qualities including color, gloss or texture, or the coating complimenting the environment while enhancing the structure itself.


Large-Diameter Cooling Water Pipe and Penstocks: Selecting and Applying Linings

by Raymond S. Tombaugh, KTA-Tator, Inc.

The installation of linings in large-diameter cooling pipes and penstocks is a major investment for hydroelectric and other power plants. The application should be performed in an expedient manner to minimize outage time and should last for many years—20 or more—without the need for maintenance painting. This is important because many hydroelectric plants are located in remote areas. To achieve these goals, planning must be done long before the start of the lining process. In this article, the author provides a compilation of the necessary tasks to plan for in order to implement a successful application.


   
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