continuing land tests and sea trials will be pursued for G9 final approval in October and full type approval by the end of fiscal-2012. An evaluation of ballast water
treatment
technologies and systems on the market by Hamburg-based
shipowner Peter Dohle in
association with Hammonia Shipping led to the specification of RWO’s CleanBallast plant for four 4,800 TEU container ships contracted at the Jiangsu Yangzijiang yard in China. Each system will have a capacity of 500 m3/h. The project extended RWO’s orders for the CleanBallast system to over 50, mainly involving Chinese applications, where the composition of the Yangtze river water poses a significant challenge. The programme currently offers systems with ballast water treatment capacities up to 3,750 m3/h, the merits claimed including very low energy consumption, simplicity and user-friendliness. Bremen-based RWO is part of Veolia Water Solutions & Technologies, itself a subsidiary of Veolia Environment, which claims to be a world leader in water and wastewater services. Type approval from ABS for its Hyde Guardian
ballast water treatment system was received last September by US-based Hyde Marine, a Calgon Carbon group company. In April 2010, the system was reportedly the first BWTS to gain product design assessment (PDA) certification from the classification society (indicating technical approval for the equipment, PDA is the first step to gaining ABS type approval). The Hyde Guardian system was type approved
Hyde Marine’s Guardian BWT system filters retrofitted on cruise ship Celebrity Mercury
in 2009 by Lloyd’s Register on behalf of the UK’s Maritime and Coast Guard Agency, confirming compliance with IMO Resolution MEPC.174 (58) guidelines. Efficient
automatic back-flushing depth
filtration is applied to remove sediment and organisms, with a powerful ultraviolet disinfection system provided to destroy or inactivate smaller organisms and bacteria. The
combination of these technologies has proven both cost effective and reliable in shipboard operation, Hyde Marine asserts. The
fully integrated into
automated the
system can ship’s ballast be control
system. Skid-mounted packages can be supplied for newbuildings or modules for easy retrofit installations in the tight machinery spaces of existing tonnage. Type-approved Hyde Guardian systems are offered with ballast water flow rates from 60 to 6,000 m3/h for vessels of all types and sizes. ATEX 100 explosion proof versions are also available.
Norway’s PG Marine group, which sells the Hyde Guardian system globally for offshore support vessel applications, recently entered into a frame agreement with the Norwegian operator DOF which plans to install BWT systems on a large number of vessels in its 75-strong fleet. PG Marine will provide installation design support and deliver and commission the hardware. The DOF fleet
includes platform supply
vessels, anchor handlers and subsea ROV tonnage which are deployed in the North Sea, offshore Africa and South America, the Gulf of Mexico and the Asia Pacific. Another framework agreement signed by DOF with the Norwegian BWT system supplier Optimarin also covers contracts to be placed during 2012-2015. Most of the projects
will
benefit existing vessels through retrofits – carried out during scheduled drydockings – but there are options for newbuilding installations. “This framework agreement initiates a
An OptiMarin BWT installation
www.mpropulsion.com
long-term relationship with DOF, whereby we will be working closely together to deliver solutions to meet their operational demands,”
Marine Propulsion I February/March 2012 I 105
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