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Almost 20 years ago the use of Ultra High Pressure Waterjetting (UHP) in shipyards for maintenance and for offshore projects started to be pushed, due to the development of surface and moisture tolerant paint technology becoming available. This was recognized by the likes of US Navy and Petrobras at the time.
Almost 20 years ago the use of Ultra High Pressure Waterjetting (UHP) in shipyards for maintenance and for offshore projects started to be pushed, due to the development of surface and moisture tolerant paint technology becoming available. This was recognized by the likes of US Navy and Petrobras at the time. The push started with maintenance projects in the 90s and conversion projects in early 2000s and in the following decade. By 2008-2010, a lot of thought, study and testing was being dedicated to check on the next step - the adoption of UHP at new building projects, both for offshore and marine assets, now under the newly launched (at the time) tool for paints prequalification: the IMO PSPC (Performance Standard for Protective Coatings) for ballast tank coatings. Two decades after early use of UHP in Brazil, 13 years after the booming adoption of UHP at Singaporean shipyards in the context of FPSO (Floating Production, Storage and Offloading) unit conversion and 5 years after the idea of its use being extended into new building shipyards in the context of IMO PSPC discussions, water-jetting and surface-tolerant coatings are the two technologies most used in Brazilian Shipyards.
The objective of this study was to examine the effects of an ultra-high pressure (UHP) waterjetting surface preparation (>25,000 psi) on the performance properties of select marine/offshore coating epoxy systems. Uncoated steel panels had been allowed to rust in an outdoor atmospheric environment and then were subjected to UHP waterjetting
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