System Solution: Balancing Speed with Performance


By Simon Daly, Hempel A/S

courtesy of hempel a/s 

Protective coatings are typically chosen as the primary means for controlling corrosion on large steel structures, driven by the need for efficiency and long-term effectiveness. When faced with compressed project schedules, however, protective coating application is seen by many as one more thing on a long, time-consuming to-do list. It is not surprising, then, that owners with assets in oil & gas, power generation, infrastructure and other sectors are keen to use fast-drying coatings to reduce time and cost.

While faster-drying coating systems can be specified to improve productivity, they should also maintain integrity over the long term. It is important to find the right balance between quality and speed.

Protection and Productivity

To address these needs, Hempel created Hempaprime Multi 500, a high-build epoxy intermediate coating, to deliver performance and long service life in severe corrosive environments, while ensuring fast drying times and short minimum overcoat intervals. This enables three coats to be applied in 20% less time than currently used products* without compromising quality, strength, finish or the high-volume solids of the coating.

Protective coatings are often applied toward the end of the fabrication or construction process, which adds time pressure, so a versatile and adaptable coating is key. Hempaprime Multi 500 can be used direct to metal or on primed surfaces, as primer, intermediate or topcoat application and for minor repairs, offering customers the simplicity of a single coating solution. It does not require thinning in optimum conditions and can be applied by spray, brush or roller, providing further efficiencies to asset owners.

The fast drying time, faster hardness development and improved cracking resistance makes it possible to move the coated steel — or build upon it faster — with a reduced risk of damaging the coating. This can decrease the need for corrective work, saving time and money. This high-performance solution is formulated for long service life in heavy industrial applications, helping to minimize maintenance requirements.

Meeting Industry Requirements

Performance, improved productivity and fast drying are not the only factors asset owners look at when choosing a protective coating. It must also meet strict industry requirements. Hempaprime Multi 500 meets the toughest anti-corrosive test requirements for the most severe environments, including ISO 12944-5 C5 High and 12944-9 CX (previously  ISO 20340 C5-M). Coating systems based on Hempaprime Multi 500 are pre-qualified for NORSOK M-501 Ed. 6, System 1.

At a time when asset owners are seeking more holistic solutions to meet industry demands, Hempaprime Multi 500 offers the performance, adaptability and versatility they may need to improve productivity and, ultimately, the bottom line.

Hempaprime Multi 500 at a Glance
Faster drying for increased productivity (up to 20% reduction in production time), allowing application of up to three coats in a single shift
Easy application with no thinning required, optimized for easy spray, brush and roller application
High-volume solids (up to 85%) and reduced VOCs — kinder for the environment and decreases worker exposure
Improved crack and wrinkle resistance even at high dry film thickness (DFT)
Certified — meeting ISO 12944- 5 C5 High, 12944-6 CX and pre-qualified to NORSOK’s M-501, Ed. 6, system 1

Learn more here.

*Calculated as the reduced total drying time for a full three-coat system consisting of Avantguard 750, intermediate and Hempathane HS (overcoat times plus dry-to-touch time for the topcoat at 20 C) by using Hempaprime Multi 500 as an intermediate coat instead of Hempadur Mastic.

Claims or positions expressed by sponsoring authors do not necessarily reflect the views of TPC, PaintSquare or its editors.


Simon Daly, Hempel A/S

Simon Daly is the group oil and gas market segment manager for HEMPEL A/S. With 28 years of coatings experience in laboratory, technical, sales and marketing positions — mainly servicing the oil and gas industry — he is currently responsible for oil, gas and thermal power strategy. See his bio on LinkedIn.




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