WÄRTSILÄ
Encyclopedia of Marine and Energy Technology

F

327 results

Field winding or field (permanent) magnets

energy

The magnetic field-producing component of an electrical machine.

Filler metal

marine

The metal or alloy added in making a welded, brazed, or soldered joint.

Fillet

marine

A rounded corner created at an inside angle of a structure or casting.

Film

marine

Continuous coating made by the application of one or more coats onto the surface. A “wet film” is the one that has just been applied, before solvent evaporates.

Film badge

energy

Photographic film used to measure exposure to ionizing radiation for purposes of personnel monitoring.

Film thickness

marine

The thickness of the paint or paint system.

Filter

marine

A device used for mechanical separation of solid contaminants from a liquid or a gas. Fine mesh filters are used to remove the smallest particles of dirt from oil before the oil enters the finely machined engine parts.

Filter with back flushing

marine

A filter with an automatic cleaning function. Back flashing is carried out by reversing the fuel flow to remove contaminants from the surface of the filter.

Filtration

marine

Filtration can be defined as the process of collecting solid particles from a fluid by passing the fluid through a filter medium where the particles are retained.

Finite element

marine

A small part of a large continuous structure which is investigated with regards to its loading. Displacements, stresses and strains can be determined at the nodes where the various elements meet and the whole structure is thus analysed.

Finite element method (FEM)

marine

The method of analysis of ship structures developed in 1960s. This allows to apply loads in the most realistic way and to analyse stresses with sufficient accuracy even in very complex structures.

Fire

marine

Fire is the result of a combination of three factors; a substance that burns, an ignition source, and a supply of oxygen.

Fire Control Plan

marine

A plan providing crucial information for rapid and efficient action of the vessel’s crew during a fire.

Fire detector

marine

A device which can detect a fire, and provide a signal to an alarm circuit. Fire detectors can be operated by smoke, flames, and heat, or any combination of these factors.

Fire divisions

marine

“A” class divisions – Bulkheads and decks constructed of steel or other equivalent material, suitably stiffened, and designed to withstand and prevent the passage of smoke and flame for the duration of the one-hour standard fire test.

Fire main

marine

A sea water supply system for fire hydrants. It consists of sea inlets, suction piping, fire pumps and a distributed piping system supplying fire hydrants, hoses and nozzles located throughout the vessel.

Fire monitor

marine

Fixed foam/powder/water cannon shooting fire-extinguishing agents on the tank deck, manifold etc.

Fire patrol

marine

An inspection through the vessel carried out by a crewmember on the watch at certain intervals so that an outbreak of fire may be promptly detected; mandatory in vessels carrying more than 36 passengers.

Fire point

energy

The fire point of a fuel is the lowest temperature at which the vapour of that fuel will continue to burn for at least five seconds after ignition by an open flame of standard dimension.

Fire pumps

marine

Usually centrifugal pumps with flat or very shallow head/capacity curves.

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