WÄRTSILÄ
Encyclopedia of Marine and Energy Technology

S

696 results

Separated extra-low voltage

energy

IEC defines a SELV system as "an electrical system in which the voltage cannot exceed ELV under normal conditions, and under single-fault conditions, including earth faults in other circuits".

Separation

marine

The term is used to describe the separation of two mutually insoluble liquids, usually oil and water, while removing any solids present at the same time.

Separation energy

energy

In nuclear physics, separation energy is the energy needed to remove one nucleon (or other specified particle or particles) from an atomic nucleus.

Separative work

energy

The amount of separation done by an enrichment process – is a function of the concentrations of the feedstock, the enriched output, and the depleted tailings; and is expressed in units which are so calculated as to be proportional to the total input and to the mass processed.

Separator

marine

The separator consists of a frame, an electric motor drive and a vertical shaft on the top of which the bowl assembly is mounted.

Series circuits

energy

Series circuits are sometimes referred to as current-coupled or daisy chain-coupled.

Serious casualty

marine

An accident resulting in at least one of the following consequences (LMIS, 1995): Total loss, Breakdown resulting in the ship being towed or requiring assistance from ashore...

Service drop

energy

An overhead electrical line running from a utility pole, to a customer's building or other premises.

Service Life

energy

See lifecycle

Service reservoirs

energy

Service reservoirs store fully treated potable water close to the point of distribution.

Service ships

marine

Vessels designed to provide support to commercial ships and/or industrial vessels, such as tugs, offshore support vessels, crane barges, diving support boats, fire boats, pilot boats and buoy tenders.

Service spaces

marine

Spaces used for galleys, pantries containing cooking appliances, lockers, mail and specie rooms, store-rooms, workshops other than those forming part of the machinery spaces and similar spaces and trunks to such spaces, (SOLAS).

Service tank, daily service tank

marine

A tank supplying clean, treated fuel oil directly to the engine.

Serviceability

energy

A measure of how a machine or other equipment can easily be serviced.

Services

energy

A company, team or individual that provides information, resources to meet a clients requirements.

Servomechanism

energy

In control engineering a servomechanism, sometimes shortened to servo, is an automatic device that uses error-sensing negative feedback to correct the action of a mechanism.

Settling tank

marine

A deep tank in the engine room used for pre-cleaning of fuel oils by gravity; a liquid mixture in the settling tank clears slowly as a heavier liquid and solids sink to the bottom under influence of gravity.

Sewage

marine

Drainage and other wastes from any form of toilets, urinals, and WC scuppers, drainage from medical premises (dispensary, sick bay, etc.) via wash basins, wash tubs and scuppers located in such premises, (MARPOL 73/78).

Sewage treatment, waste management

marine

There are three main sewage treatment processes: biological, physico-chemical and electrocatalytic oxidation.

Shackle

marine

U-shaped steel forging with a pin through an eye on each leg of the U.

Download the Encyclopedia