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Strategies to improve the heat transfer rate and efficiency of a power plant must carefully balance a trinity of factors: the overall capital expense associated with the technology, the ongoing savings during normal plant operations, and the downtime and labor required for installation and implementation. These economic concerns have slowed the adoption of protective and/or functional surface treatments in power plant operations; traditional epoxies used to prevent biofouling and scale deposition can only be applied to brand new equipment, and the coating will limit heat transfer due to its insulating nature and applied thickness.
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Environmental, market, and cost pressures have led to the development of alternatives to conventional 2K polyurethane topcoats, including isocyanate-free binders. For example, 1- and 2K coating systems based on alkoxysilane chemistry find increased use in protective coatings.
Fourteen countries, 20 states, and 76 bases…that sounds like quite a deployment! But what if, instead, you are charged with the evaluation and maintenance of over 500 water-storage tanks and related structures on those bases. Who would you turn to for professional guidance? How would you keep all of the details of the structures’ conditions and recommendations for maintenance organized in a manner that would allow you to rate and prioritize tank maintenance requirements?
Coating practitioners are aware that single coat, thick film solvent-free epoxy linings have gained acceptance for their promise of productivity benefits which include a potential quick return to service for newly applied tank linings. From the vantage point of owners, applicators, inspectors and coating manufacturers this paper examines productivity and performance issues associated with a tandem approach of using a thin film solvent borne epoxy holding primer (especially over pitted steel) with a coat of solvent-free epoxy lining as opposed to using a single coat of a solvent-free lining applied direct to metal.
Aerial robotics is an emerging technology for coatings and non-destructive testing (NDT). Performing coating inspection measurements, such as dry film thickness (DFT), using aerial robotic systems improves occupational safety and reduces injuries and deaths attributed to falls. This is done by allowing measurements to be taken with the worker safely on the ground. As the industry advances towards adopting drones/aerial robots as tools for inspection practices, it is critical to evaluate the associated performance and limitations
Many bridge painting projects include steel repairs as part of the contract. Painting and steel repairs are performed by separate trades and often separate contractors. Even designers may see them as separate activities. However, steel repairs and coatings must work together and be installed as a system to perform as intended. This paper is a discussion about the process of installing steel repairs and painting a bridge at the same time.
Annual update on regulatory issues affecting the SSPC members and the coatings industry including enforcement of the new silica and beryllium OSHA standards and the EPA hazardous waste regulations.
Soluble salts may be transferred to a steel bridge or other structure as an airborne aerosol (generally from marine or industrial sources), wind-blown debris, and debris transferred from vehicles. Perhaps the most significant source of soluble salts on bridges is from de-icing materials. Once on the structure, salts may become incorporated into corrosion scale, poultice, or crevices.
When a project finally reaches the bidding stage, many of the owner’s questions and concerns regarding the project's outcome have been considered. However, given the ongoing effort to continually extend every assets useful service life, one important question that gets asked more and more is “How long is my coating system going to last?”
Traditional sacrificial protection afforded by zinc rich primer technology relies on the zinc metal acting as its own metallic pathway to transfer electrons to the steel substrate. Understanding this mechanism of corrosion protection versus an enhanced method of electron transfer using a self-assembling nanoscale carbon quantum network will demonstrate to the reader how this new approach to galvanic corrosion protection is more effective, sustainable, and greener for the environment.
High performance fluoropolymer resin systems for coatings applications have been commercially available for years. These technologies provide the owner a coating system that will far outperform other coatings in terms of exterior performance, most notably in chalk and fade retention. This paper will discuss the chemistry of the two primary types of fluoropolymer resins utilized in the protective and architectural coatings markets and explore the mechanisms by which they provide improved exterior durability. Additionally, the benefits of fluoropolymer coatings will be explored in specific applications.
Whether we choose to recognize it or not, every company has a safety culture that continuously changes, and even rebrands itself from time to time. An opportunity for safety performance improvement is created by choosing to recognize the need and manage the rebranding of the culture. The concept of a safety culture can be divided into broad and narrow aspects.