The Finnish ferry company, Viking Line, has recently signed an Optimised Maintenance agreement for the Wärtsilä LNGPac system on their passenger ferry Viking Grace, which is fuelled by liquefied natural gas (LNG). “Environmental considerations are, along with the need to optimise operational efficiency, high on the agenda for us,” says Ulf Hagström, Senior Vice President, Marine Operations & Newbuildings at Viking Line Oyj.
Increased reliability and maximized uptime
The Optimised Maintenance agreement for the Wärtsilä LNGPac on the 2013-built Viking Grace is the first ever. The Wärtsilä LNGPac is a complete gas handling system for LNG fuelled ships. “In addition, we have also extended our existing Optimised Maintenance agreement to cover all four Wärtsilä 50DF engines on Viking Grace for another five years, comprising both Condition Based Maintenance (CBM) and online support,” Hagström adds.
The Wärtsilä LNGPac on Viking Grace comprises onboard liquid natural gas bunkering, two storage tanks as well as handling equipment with related safety and automation systems developed by Wärtsilä.
The CBM system included in the Optimised Maintenance agreement for the Wärtsilä LNGPac gathers information on the average gas flow, the temperatures of the heat exchangers, the use of energy, and the pressure of the LNG pumps. The agreement enables the planning and scheduling of the dynamic maintenance procedures according to the vessel’s schedule. This improves the long-term cost predictability, increases performance reliability and maximises the vessel’s uptime.