07.04 How is the tank refilled?

Day tanks are re-filled by either (a) on-board fuel transfer pumps, or (b) remote pump systems with inlet control valves at the day tanks..

On-board fuel transfer pumps are simple configurations for single generator – single bulk tank operations. They may be configured as either single or duplex pump systems. Limitations include: (a) limited suction lift on pumps means the bulk tank must be in close proximity, (b) multiple day tanks typically need dedicated suction lines, rather than sharing a common fuel supply line, (c) potential for loss of prime in suction lines.

Remote pump systems can be either positive displacement pumps or submersible turbine pumps, and are usually configured as duplex systems. Advantages include: (a) wide range of flow capacities, (b) ability to serve multiple day tanks.