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The practice of induced heat to decontaminate a tank (pre-baking) that has been in previous service for re-lining and / or the post application heat curing (force curing) of an applied lining may be considered as a lost art known currently to the few lining specialist within the industry. The objective of the presentation is to inform or remind Owners, Specifiers, Inspectors, Applicators and Vendor Representatives of the requirements and benefits of these processes to obtain a successful relining or tank lining project and additionally attain time savings and prevent cold curing issues.
The practice of induced heat to decontaminate a tank (pre-baking) that has been in previous service for re-lining and / or the post application heat curing (force curing) of an applied lining may be considered as a lost art known currently to the few lining specialist within the industry. The objective of the presentation is to inform or remind Owners, Specifiers, Inspectors, Applicators and Vendor Representatives of the requirements and benefits of these processes to obtain a successful relining or tank lining project and additionally attain time savings and prevent cold curing issues. Tank lining installations are best performed by applicator’s that have attained a level of proficiency or are willing to accept instruction of the necessary and minimum mandatory requirements of surface preparation, application methods, facilities, equipment and inspection. The additional capabilities of performing forced cure related operations afford latitude in working with less than ideal conditions (previous service contamination and environment inclemencies), and enhancing project schedule improvements and increased chemical resistance of the applied lining.
Advanced technology high performance tank linings are often applied by plural spray equipment and occasionally one of the components could be off ratio. Worse still, some well-intentioned field personnel might add more curing agent to speed up the cure, or alter other properties, or may not utilize the entire curing agent portion in a single leg application. This paper investigates the effects of under-cure or over-cure on the performance of two high temperature tank linings by deliberately mis-mixing the two components.
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Tank lining products are necessary for protection of infrastructure and commodities to ensure daily business operations continue smoothly. They are expected to protect the tank from corrosion and chemical attack while maintaining the purity of the tank’s contents; ultimately keeping people and the environment safe from an accidental discharge. Rigorous laboratory testing programs and field trials are conducted to instill confidence the right product is recommended for each task.
For decades, waterproofing has been a major concern and a widely researched topic by building scientists and forensic engineers. Elastomeric coatings have been broadly used in different applications since the early 1950s. Manufacturer’s recommendations for the proper application of elastomeric coatings are often based on laboratory conditions (75oF and 50% RH) rather than extreme conditions posed by the real world. This study examines the failure of elastomeric roof coating exposed to conditions of high temperature (150°F) and water pooling caused by precipitation.