SIGMASHIELDTM System: Highly resilient protective system for high-impact and abrasive cargo operations works for Boskalis
Baggermaatschappij Boskalis B.V. (Boskalis) is a leading global maritime services company operating in the dredging, offshore energy and inland infrastructure sectors, writes Sijmen Visser, Global Marketing Manager Marine, PPG Protective and Marine Coatings. The organization operates in over 75 countries across six continents, with a versatile fleet of over 1,100 vessels and equipment.
Boskalis is active in the energy, ports and infrastructure markets, with a wide range of clients including oil companies, port operators, governments, shipping companies, international project developers, insurance companies, and mining companies.
The Causeway, the company’s new hopper dredger handles large amounts of highly abrasive, heavy materials. The challenge was to find a coating that would withstand the persistent abrasion to the steel surfaces due to the constant loading and discharging of sand and stones.
Following two years of extensive testing, PPG Protective & Marine Coatings (PPG) worked with Boskalis to provide the SIGMASHIELD System.
PPG applied a system comprising the SIGMASHIELD 1090 product as an under layer with the SIGMASHIELD 1200 coating as a finish layer on top to the Causeway at the Shipyard Boer, Sliedrecht,The Netherlands.
The SIGMASHIELD 1090 product is a two-component, solvent-free polyamine-cured epoxy compound. After blasting the total area, one layer of SIGMASHIELD 1090 was applied.
Following this, to obtain a very smooth surface, the SIGMASHIELD 1200 coating was applied on top of the SIGMASHIELD 1090 product. The SIGMASHIELD 1200 product is a two-component, abrasion-resistant, solvent-free, phenolic epoxy coating that gives the system additional abrasion- and impact resistance. As a result of its smooth finished surface, the sand and mud will discharge faster and therefore less cargo will remain in the hopper.