Ultrasonic anti-fouling system company, Sonihull, was recently certified in compliance with 94/9/EC ATEX Approval, the regulation applied to all equipment intended for use in explosive atmospheres.
With this approval, Sonihull becomes the first ultrasonic anti-fouling system to be awarded ATEX certification, making it the ideal choice for LNGCs, oil rigs, FPSOs, and other petrochemical applications looking for biocide-free anti-fouling solutions in hazardous areas, the company claimed.
“Sonihull is ideal for protecting the raw seawater [RSW] cooling-systems on LNG vaporisers,” explained 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.”
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 fitted in a separate cabinet.
The system is claimed to be 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 class 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 also reduce maintenance costs, extend maintenance intervals and can facilitate quick mothballing and re-activation without the need to drydock.