WÄRTSILÄ
Encyclopedia of Marine and Energy Technology

F

327 results

Floating production system (FPS)

marine

Semi-submersible or ship-based system used to exploit the oil fields. The system has three main components: the Floating Production Vessel (FPV); Mooring System and Subsea System, which include the risers and well system.

Floating Production Vessel

marine

The FPV consists of a large deck connected to submerged pontoons by widely-spaced surface-piercing columns. The pontoons provide buoyancy to support platform weight.

Floating production, drilling, storage and offloading (FPDSO) offshore unit

marine

A novel FPSO that incorporates a drilling facility. The drilling takes place through the turret moonpool from a rig supported directly by the vessel.

Floating production, storage and offloading unit VARG

marine

Turret-moored FPSO vessel built by Keppel Fels Singapore for the Varg Field in Norwegian sector of the North Sea. The 16 m-diameter turret is located forward of the midships area in order to provide a passive weathervaning capability.

Floating production, storage and offloading units (FPSOs)

marine

Semi-submersibles or ship-type offshore mobile units used for exploitation of marginal fields. FPSO provides hydrocarbon processing, storage, and offloading hydrocarbons.

Floating run-of-the-river hydroelectricity

energy

A floating hydroelectricity plant that does not require the creation of a water storage area. The float is tethered in the flowing water whereby a small turbine is under the float section.

Floating solar

energy

Floating solar refers to a solar power production installation mounted on a structure that floats on a body of water, typically an artificial basin or a lake.

Floating storage and offloading unit (FSO)

marine

An offshore unit equipped for crude storage and offloading to a shuttle tanker. Oil from a floating production unit is transferred by a flexible riser and a swivel through the turret.

Floating wind turbine

energy

Wind turbines that are mounted on floating structures which are then tethered to the sea bed.

Flocculation

marine

A process by which two or more particles aggregate without loosing their individual identities.

Flood control doors, also flood prevention doors

marine

Watertight doors provided to increase the damage stability of the ro-ro ship by restricting the movement of any water along the deck and therefore reducing the free water surface area.

Floodable length

marine

The floodable length at any point in the length of the ship is the maximum portion of the length, having its centre at the point in question, which can be symmetrically flooded at the prescribed permeability, without immersing the margin line.

Floodgate

energy

Floodgates, also called stop gates, are adjustable gates used to control water flow in flood barriers, reservoir, river, stream, or levee systems.

Flooding

marine

The uncontrolled entry of seawater into a tank or compartment as a result of damage.

Floor

marine

A bottom transverse member mounted in the double bottom to support the inner bottom plating, can be watertight, solid or a bracket construction.

Flow battery

energy

A flow battery, or redox flow battery (after reduction–oxidation), is a type of electrochemical cell where chemical energy is provided by two chemical components dissolved in liquids that are pumped through the system on separate sides of a membrane.

Flow center

energy

A packaged set of circulating pumps mounted in a cabinet, which often includes valves and ports for flushing/purging, antifreeze charging (if used), and loop pressurization (if a pressurized flow center is used).

Flow meter

energy

A device that indicates water flow.

Flow rater

energy

Component that reduces fluid flow to a specified rate (such as 4 gpm).

Flow regime

energy

The nature of fluid flow in any situation.

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