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SONIHULL is first to get ATEX approval

Seawork exhibitor, NRG Marine Ltd has announced that Sonihull, its ultrasonic anti-fouling system, has been certified as compliant with 94/9/EC ATEX Approval.

NRG Marine says Sonihull is the first ultrasonic anti-fouling system to be awarded ATEX certification, making it the ideal choice for LNG carriers, oil rigs, FPSOs, and other petrochemical applications looking for biocide-free anti-fouling solutions in hazardous areas.

Sonihull’s ultrasound transducers have been approved for use in Zone 0 and the control box has been certified for use in Zone 1 and Zone 2 applications if being fitted in a separate cabinet.

The Sonihull ultrasonic anti-fouling system delivers an unmatched combination of qualities, providing effective bio-fouling control in raw seawater (RSW) handling equipment, without the poisonous environmental legacy of biocides, metal compounds or microplastics.

The system is also easy to install, as the ultrasound transducers are bonded to the dry-side of the RSW handling equipment or pipework. This removes the need for any drilling or welding, and the requirement for extra Classification surveys, pressure-testing and documentation.

With simple installation and no expensive anodes to replace, a Sonihull system can reduce capital and MRO costs by up to 95% compared to similar impressed-current anti-fouling systems. Sonihull will reduce maintenance costs, extend maintenance intervals and can facilitate quick mothballing and re-activation without the need to dry-dock.

“Sonihull is ideal for protecting the RSW cooling-systems on LNG vaporizers,” explains Dominic Findlow, Sonihull’s Technical Director. “Our transducers can be fitted in-situ to the dry side of the RSW handling equipment and pipework without the drilling or welding associated with impressed-current or dosing systems. Once installed, there’s no regular maintenance to replace costly anodes.”

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