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Cleaning, coating, and the nondestructive testing (NDT) of corrosion-susceptible surfaces requires extensive manual labor, often at heights that can create dangerous occupational environments. Drones, also known as uncrewed/unmanned aerial vehicles or systems (UAVs, UASs), can be leveraged to perform some of these tasks, including cleaning and coating, while keeping workers safely on the ground.
Cleaning, coating, and the nondestructive testing (NDT) of corrosion-susceptible surfaces requires extensive manual labor, often at heights that can create dangerous occupational environments. Drones, also known as uncrewed/unmanned aerial vehicles or systems (UAVs, UASs), can be leveraged to perform some of these tasks, including cleaning and coating, while keeping workers safely on the ground.Drone capabilities have significantly evolved over the past decade, and it is expected that the ubiquity of such systems will continue to increase in the years to come building.This paper focuses on Tethered Drones for Coating and Cleaning. Specifically, using Tethered Aerial Robotic Systems (drones) for Visible Surface Cleaning and Removal of Nonvisible Contamination and Architectural and Protective Coating Applications
The use of duplex coating systems (hot dip galvanizing or thermal spray coating with one or more liquid-applied coatings) for long term protection of structural steel is becoming more mainstream in many industries. This paper describes the advantages of employing duplex coating systems as well as some important considerations for designers prior to specifying their use. It also highlights an ongoing initiative to help agencies more efficiently and effectively use duplex coatings on steel bridges by developing guidelines, standards, and other materials.
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Zinc-rich primers, with zinc dust loadings of 80-85% by weight in the dry film, are often the preferred primer during new construction of assets placed in environments with high atmospheric corrosivity. Coating standards such as SSPC-Paint 20 and ISO 12944 demand that zinc-rich primers contain at least 65% and 80% zinc dust by weight in the final dry film, respectively. Traditional zinc rich primers need this high zinc loading to achieve galvanic protection of steel. New technology allows us to develop zinc primers with a lower content of zinc and/or different zinc morphology than dust to provide similar or better corrosion protection to the steel.
Construction companies will experience a crisis at some point during its existence.This is especially true for construction companies, where it is not a matter of “if” one will happen but “when” it will happen. A crisis is the sudden occurrence of any unplanned or unexpected event that causes harm to the project /company, employees, or the public. The crisis could be a medical/safety emergency, a natural disaster, or personnel crisis dealing with unethical or illegal activities.Construction companies must always operate with a “better safe than sorry” mindset. A proactive way to do so is to ensure that there is a crisis management plan in place.