Amarinth revolutionises Enhanced Backwash Process pump reliability with advanced titanium engineering

Amarinth’s titanium advantage

Amarinth’s leadership in this market stems from decades of collaboration with customers to refine its pump designs for the rigorous demands of the CEB process.

Drawing on extensive experience with exotic materials, the company has perfected the manufacture of titanium-wetted centrifugal pumps that meet the highest international standards.

Titanium offers exceptional corrosion resistance, even against strong oxidising agents like sodium hypochlorite. Its superior strength and durability allow Amarinth pumps to perform reliably in high-stress, offshore environments without compromising efficiency.

Amarinth’s titanium CEB pumps are also highly cost-effective over their lifecycle. Through years of production experience and a carefully optimised sourcing strategy, from castings to fasteners, the company has minimised the cost premium of titanium components.

Any small initial uplift is quickly offset by the pump's reliability, reduced maintenance and extended service life.

To combat issues caused by sodium hypochlorite crystallisation, Amarinth has engineered mechanically strengthened designs featuring uprated shafts and impellers, resulting in a more robust rotating assembly.

The company also offers pumps specifically designed for unattended operation, a growing requirement for modern offshore installations.

Proven performance

By combining advanced materials science, precision engineering, and decades of offshore expertise, Amarinth delivers CEB solutions that few can match with pumps that last longer, require less maintenance, and keep critical operations running smoothly.

Umm Lulu, Abu Dhabi

For ADMA-OPCO’s Umm Lulu offshore development in Abu Dhabi, the specification called for four sodium hypochlorite dosing pumps, an essential part of the water treatment system that prevents biofouling.

The challenge was that sodium hypochlorite is one of the most aggressive and corrosive chemicals in use, and traditional pump materials like stainless steel or even super duplex alloys would have suffered rapid degradation.

Plastics were briefly considered, but concerns about reliability and the harsh offshore environment meant they were not viable. To add further pressure, the pumps had to be delivered within just twenty-four weeks, leaving little room for delay.

Amarinth’s solution was to engineer pumps where every wetted part, including the casing, impeller, and shaft, was manufactured from titanium alloy. This approach provided complete corrosion resistance and ensured dependable long-term performance. Delivered on time and to specification, the pumps offered ADMA-OPCO a solution that combined durability, safety, and confidence in continuous offshore operations.

FPSO Brazil

Amarinth was entrusted to design and supply pumps for two FPSO vessels operating off the coast of Brazil for Petrobras. The vessels required four chemically enhanced backwash pumps capable of handling highly corrosive fluids in demanding offshore conditions.

These pumps would play a critical role in maintaining filtration efficiency, but they needed to meet rigorous safety and compliance standards while also operating with minimal human intervention.

Amarinth designed pumps with titanium wetted parts ensuring resistance to the aggressive chemicals involved. Each unit was certified for hazardous areas under ATEX standards and fitted with auto start-stop modules, allowing for safe, unattended operation.

To achieve the high-quality titanium castings required, Amarinth worked with a specialist UK foundry capable of casting large titanium components.

The result was a robust, reliable, and innovative pumping solution that provided Petrobras with long-term operational assurance in one of the world’s toughest offshore environments.

FPSO One Guyana

Building on their success in Brazil, Amarinth was approached to supply pumps for the FPSO One Guyana, part of ExxonMobil’s Yellowtail deepwater development project.

This time, the requirement was for two API 610 OH2 compliant titanium pumps designed for chemically enhanced backwash applications.

Offshore Guyana presented similar challenges, including aggressive chemical handling, corrosive environments, and the need for flawless reliability under high-pressure conditions. The pumps needed to meet international standards while also being engineered for longevity and minimal maintenance.

Amarinth delivered titanium-wetted pumps specifically tailored to this application, leveraging advanced casting techniques and engineering expertise.

By providing units capable of operating in extreme conditions while meeting all required standards, Amarinth reinforced its reputation for cutting-edge solutions and strengthened the trust it has earned within the FPSO industry for high-performance pumps in critical offshore operations.