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It does not take one with too much intelligence to note that our infrastructure is in dire shape. Not only does this include our water & wastewater areas, but our road and bridge systems need substantial help. Deterioration due to environmental issues, water and chemicals that are used which cause for serious corrosion and erosion concerns. Over the years, a variety of methods have been employed to help with these issues, but all have individual characteristics and problems.
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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
The impacts of marine biofouling to the maritime and naval communities, as well as the planet as a whole are well documented. Whether its increased fuel consumption and carbon emissions, transport of invasive species, or that it just plain looks bad, marine biofouling needs to be addressed more aggressively, be that timely removal of growth, or increased monitoring of hull condition to know when it’s time for removal. Current methods of removing growth are costly both in time and money, potentially environmentally unfriendly and risk impacting the health of the ship’s coating system.
Prevention of corrosion on submerged surfaces, particularly ship’s hulls, is a challenging process. Beyond the corrosive effects of seawater, biofouling will start to accumulate, and if left unchecked, can potentially damage the coating reducing its anti-corrosive properties. In stationery applications, the biofouling may be of little immediate significance, but in the case of vessels, biofouling will greatly increase hull resistance, leading to reduced speed, greater fuel consumption and emissions, as well as enabling the transfer of alien species as the vessels travel the globe.
The polyurea technology is not new to pipelining work, with earlier basic applications dating back more than 15 years. Much of this work was either performed by hand spraying (large diameter pipe) or simple robotic systems for individual joint sections of pipe. Continued work over the years has proven that in-place pipelines can be commercially completed as well. More recent work has even shown that in addition to long, straight runs, robotic developments have allowed for lining both 45° and 90° radius bends in the pipeline system.
This paper summarizes the work performed under 2011 funding from the National Shipbuilding Research Program (NSRP) Surface Preparation and Coatings Panel.
The U.S. Navy has determined that thermal spray coatings can be used as an alternative to traditional epoxy based nonskid coatings under high temperature applications to extend service life. Traditional nonskid coatings break down under the stresses leading to loss of adhesion, deck corrosion and reduced slip resistance. Using a twin-wire arc spray system, the U.S. Naval Research Laboratory (NRL) successfully applied an aluminum-based ceramic-metallic thermal spray material on the flight deck of USS Wasp (LHD 1).
This paper will discuss both the advantages and disadvantages from a variety of viewpoints of specifically UHP Robotics when used to prepare a previously coated carbon steel storage tank for coatings. Interviews have been conducted with UHP Business Owners/Operators, Painting Contractors, Facility Owner Representatives, Coatings Inspectors and Coatings Manufactures to obtain a broad view of the use of the technology.
For corrosion engineers to take Nondestructive Testing (NDT) measurements at height, currently they may need to utilize a lift, scaffolding, ladders, inspection trucks with elevated baskets, rope work, catwalks, cranes and rigging or other solutions. NDT inspection programs can dramatically increase the safety and integrity of infrastructure, industrial and manufacturing assets, access requirements in performing these inspections introduces risk.
Combinatorial chemistry is a laboratory technique in which millions of molecular constructions can be synthesized and tested as candidates for new drugs, new catalysts, shorter manufacturing process, or novel molecules for specific targets. Combinatorial chemistry was invented for drug discovery in pharmaceutical industry in early 1980s. This was the concept that was at the forefront at the search of procedures that were expected to accelerate and facilitate new molecules for various targets such as new drug discoveries, or new molecules for any intended target.
Surface preparation techniques have evolved with the acceptance of UHP waterjetting (UHP WJ). The new technique has proven to provide benefits in not only workflow, but also in the overall project’s pocketbook as well. With quality requirements rising and budgets for maintenance activities decreasing, UHP WJ has become the ideal surface preparation solution.