KTA-Tator, Inc. gratefully acknowledges SSPC for their permission to post the following papers presented at past PACE conferences.
“Coating Failures on Painted Galvanized Mast Arms” (PDF 543 Kb) Galvanized mast arms support uncounted numbers of traffic signals and signage throughout the United States. The proportion of these that have a “duplex” coating system (both galvanizing and organic coatings) is unknown. However, the number is surely significant, and the number of coating system failures is also significant. The Florida Department of Transportation has estimated there are at least 2,400 mast arm coating failures throughout the State, 150 in the Jacksonville, FL area alone. The authors will discuss findings and experiences from investigating the causes for failures of the mast arm duplex systems and remedies available to owners.
Paul Vinik, MSChE, P.E., Florida Department of Transportation
Richard A. Burgess, Senior Coatings Consultant, KTA-Tator, Inc.
“Overcoming Obstacles to Repaint a Unique Structure From Initial Planning through Project Completion” (PDF 239 Kb) The paper chronicles and discusses the challenges, options, choices and solutions from the design phase through the actual blast cleaning and painting of one of the most unique steel structures in the world, the largest radio telescope at Arecibo, Puerto Rico. Challenges included: almost daily thunder storms, a truss structure consists of 900 tons of steel elevated on cables approximately 450 feet above an 18 acre aluminum dish, penalties for dropping anything, access from only a single suspended 700 ft walkway, limitations on weight distribution and weight loads, removal of lead and mill scale in total containment, structural limitations affecting containment installation, protection of numerous delicate wires, cables, sensors and other equipment, locating/importing equipment, bureaucratic requirements, and more.
David S. Leyland, Senior Coatings Consultant, formerly with KTA-Tator, Inc.
“Maintenance Painting Management Evaluation of 10 PacifiCorp Power Generation Facilities” (PDF 473 Kb) PacifiCorp Energy, a division of PacifiCorp, provides 7,750 megawatts of electricity every hour from 12 coal, gas and geothermal fired generating plants located in Utah and Wyoming. MidAmerican Energy Holdings Company acquired PacifiCorp in 2006 and identified coatings maintenance as a priority, both in terms of corrosion protection and aesthetics. To that end, PacifiCorp Energy’s Generation Engineering group engaged the services of an independent coatings expert to assess the painted surfaces throughout 10 of their 12 facilities, to establish painting priorities, painting cost estimates, and specifications for maintenance of the coatings. This paper describes the consultant selection process, the field survey process, results of the field surveys, and the next steps to be taken.
Lon Udy – PacifiCorp Energy, Salt Lake City, UT
Kenneth A. Trimber – KTA-Tator, Inc.
Kirk Wissmar – KTA-Tator, Inc.
“Regulatory Update: Current and Emerging Trends in Occupational and Environmental Health” (PDF 136 Kb) This paper takes a look at emerging environmental, health and safety issues that may impact painting contactors and facility owners. Specific topics include OSHA’s hexavalent chromium standard, recent rulings related to multi-employer worksite policy and OSHA’s use of threshold limit values (TLVs®). The expected final rule on employer-paid personal protective equipment (PPE), the proposed confined space entry standard for construction, the proposed revisions to the hazard communication standard, and the American National Standards Institute standard on Hearing Loss Prevention in construction are described. EPA’s review of the NAAQS for lead and the potential implications of PM2.5 standard enforcement are reviewed. Additionally, recently enacted New York City regulations regarding scaffolding, noise mitigation, and emission control from construction vehicles are discussed. Much of the information is taken directly from the respective agency’s published regulatory agenda, supplemented by anecdotal information gathered from various professional journals, seminars and conferences.
Alison B. Kaelin, CQA, Quality Assurance Manager
Daniel OMalley, Manager EH&S Services
“Thermal Imaging as a Forensic Tool in Coating Failure Investigations” (PDF 218 Kb) This paper discusses the use of thermal imaging as an analytical tool in forensic investigations of moisture-related coating failures applied over hollow core building walls. The success of thermal imaging depends upon detecting subtle temperature differences arising from differences in thermal conductivity of the coated wall surfaces. The method is a valuable adjunct to contemporary failure investigation methodology.
E. Bud Senkowski, P.E., Senior Coatings Consultant
“A 20 Year Performance Evaluation of an Organic Zinc Rich Paint Ssystem” (PDF 135 Kb) A five-year coatings research project was initiated by the Pennsylvania Department of Transportation in 1986 to evaluate the performance of an organic zinc rich coating system. The coating system consisted of a moisture cured urethane zinc rich primer, an epoxy intermediate, and an aliphatic polyester urethane finish coat. The system was applied to the Windgap Bridge located in McKees Rocks, Pennsylvania (near the City of Pittsburgh) in 1986 and 1987. Coating system performance was tracked for the next five years using a preestablished protocol of visual inspections and physical testing. The coating system, which has now reached a twenty-year milestone, was re-inspected in 2007. Even though no coating maintenance work was performed since the initial installation, the coating system continues to provide good corrosion protection and has maintained a good appearance.
James D. Machen, Senior Coatings Consultant
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