Solution for Low-Sulfur Fuel Use in Seaspan Containerships

摘要

SEASPAN SHIP MANAGEMENT made the decision to meet the IMO 2020 global sulfur cap limits by using compliant low-sulfur fuels in its vessels. Like most containerships, however, the Seaspan vessels have only a single oil-fired boiler and a waste heat recovery boiler on board. This provides no redundancy, which is problematic when using sulfur-compliant fuels."The composition of low-sulfur fuels was uncertain when we first decided for them, but it quickly became clear that high paraffin content would be an issue," says Arvin Dsouza, fleet manager at Seaspan Ship Management. "To avoid wax formation, the fuel temperature has to stay above the pour point at all times. But the existing boiler solution on the vessels can't guarantee the required steam capacity as these vessels do not have heating coils in all the designated fuel oil tanks and rely on a shifter system. We chose to work with Alfa Laval, who found the answers we needed."