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This paper will outline the results of using CNTs in liquid applied coatings, resulting in the elimination of secondary surface preparation steps such as grinding, chamfering, and rounding of edges as well as eliminating the need to apply a stripe coat. The overall impact realized from the elimination of these process steps include, increased productivity, increased throughput, improved edge coating performance, and substantial lowering of project costs.
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.
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Aromatic polyurethane coatings are often used in the protection of steel water pipelines from corrosion. Unfortunately, pipeline sections may be stored above ground for many months before installation so the coatings yellow, lose gloss and can chalk. This deterioration in appearance naturally creates doubt about the corrosion protective qualities of the coatings.
Modern design, manufacturing and field-testing specifications include surface profile and adhesion testing on the assumption that they are linked to long term corrosion prevention. There are a number of careful studies, dating back decades, that find no link between measurements of adhesion and (undercutting) corrosion performance, but other studies do, and the concept remains intuitively appealing and widely assumed.