News | EQUIPMENT


Engines ECAs bring low sulphur


fuel challenge Vessels using ultra low sulphur fuels in order to comply with ECAs may be affected by the formation of paraffin wax in engines and fuel tanks, according to Wilhelmsen Ships Service (WSS). In cold temperatures the formation of wax in


engines and fuel tanks increases. Sachin Gupta, business manager of oil solutions at WSS explains: “Distillate fuel contains paraffins, or wax particles, and colder climates pull these together to create large structures. Tese structures, basically waxy sludge masses, accumulate in fuel tanks and block fuel filters, damaging them and causing an increasing number of loss of power (LOP) incidents.” WSS says there has been confusion in negotiating


this problem because of its complexity. “A key issue is that fuels with only slight differences of the same grade can react very differently at cold temperatures – with some flowing freely, while others have catastrophic effects on fuel filters,” says Jonas Ostlund, a marine fuels expert for WSS. “It’s therefore vital to have a clear picture of both the temperatures vessels will be operating in and the characteristics, quality and specifications of the fuel you intend to use.” In order to manage this sticky eventuality, Ostlund


prescribes that crew members know pre-determined Cloud Point (CP) and Cold Filter Plugging Point (CFPP) figures for the distillate in use, as well as for owners and operators to buy distillates designed for slightly colder waters than the vessels will be sailing in. Distillate fuel treatments, or cold flow additives,


can also be used to prevent the formation of distillate waxes by postponing the formation of wax crystals. “They can help keep vessels safe when temperatures approach the limits of what a fuel can tolerate,” says Gupta. www.wilhelmsen.com/shipsservice


Auxiliary equipment LNG PowerPac cuts port


emissions An LNG onshore power solution, LNG PowerPac, from Becker Marine Systems has received a grant notification from the German Ministry of Transport and Digital Infrastructure for a concept that provides alternative and greener means of supplying energy to ships at port. “During layovers at port the power for


containerships is currently being supplied by 14


Becker Marine Systems’ LNG PowerPac cuts emissions in port


onboard auxiliary diesel engines using fuel oil (Marine Gas Oil, MGO). By doing so, ships account for the majority of harmful emissions at ports,” says Henning Kuhlmann, managing director of Becker Marine Systems. “With LNG PowerPacs we are creating a modern, environmentally-friendly, safe and economical option for supplying power based on LNG to containerships during layovers at port.” Each LNG PowerPac can provide 1.5MW from its


gas-powered generator and 20-foot LNG ISO tank that lasts up to 30 hours. Te system can work in tandem with additional units if supplemental power is needed. Te LNG PowerPac has been designed to fit within


the space of two 40-foot containers and can be loaded onboard using standardised equipment, such as gantry cranes, ship-to-shore cranes or van carriers. www.becker-marine-systems.com


Scrubbers TUI cruiseships scrub up


Valmet, a global developer and supplier of process technologies, will supply two new cruise vessels with exhaust gas scrubber systems (EGCS). TUI Cruises’ Mein Schiff 7 and Mein Schiff 8, which


are currently under construction at Meyer Turku, Finland, will be the latest of the cruise line’s vessels to adopt Valmet’s cleaning system. Valmet’s system washes exhaust gas with seawater


in open loop mode and with recirculated water and alkali in closed loop mode. Te wash water is then cleaned with Valmet’s water treatment system. The scrubber system orders include integrated


hybrid scrubber systems for both engine rooms and all auxiliary systems with automation. Tey are scheduled for delivery in the fourth quarter of 2016 and the first quarter of 2017. www.valmet.com


The Naval Architect March 2016


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