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Recycled steel grit and shot have a well-established place in the industry and long, successful track record.
The Offshore Oil and Gas environment is among the most corrosive in the world. It is also one of the mostdangerous. Providing safe working surfaces is a requirement of the Bureau of Safety and EnvironmentalEnforcement (BSEE) and is desired by asset owners and contractors alike. Balancing safety with production,downtime, and turn-around times is always a battle, but one coating manufacturer seems to have solvedthese issues through its development of a single coat zinc carbon nanotube (CNT) non-skid epoxy deck coatthat provides galvanic protection via the sacrificial metal’s electron transfer along the CNT quantum network.
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Abrasive material forms a major component for surface preparation in coating applications. Since blasting method developed in 1890s, abrasive materials and its application methods also significantly improved to enhance blasting efficiency. In general, steel grit and shot ball are being used predominantly as metallic abrasives. Garnet and coal slag are used as non-metallic abrasives. Each abrasive is selected andapplied in accordance with the work location and substrate material of structures to be coated. In this study, we have evaluated a new artificial non-metallic abrasive (ferrochrome slag) which is a by-product from ferrochrome production process for stainless steel. This evaluation also included the checking of surface cleanliness performance and coating quality based on international test methods and field trials. For verifying the cleanliness quality, various tests were conducted as per international standards (ISO 8501-8503). Sea water immersion test (ISO 2812-2) and cyclic test (ISO 12944-9) were carried out to checkcoating performance after blasting. The field test results indicates that all inspection and quality criteria of surface preparation were met as per international standards. Furthermore, coating performance test results also showed this abrasive does not have any adverse effect on coating properties.