WÄRTSILÄ
Encyclopedia of Marine and Energy Technology

T

304 results

Tack weld

marine

A weld made to hold parts of a weldment in proper alignment until the final welds are made.

Tack welder

marine

A fitter, or someone under the direction of a fitter, who tack welds parts of a weldment to hold them in proper alignment until the final welds are made.

Tactical diameter

marine

see Manoeuvring parameters.

Tailings

energy

Tailings are the materials left over after the process of separating the valuable fraction from the uneconomic fraction of an ore.

Take-me-home drive systems

marine

Emergency drive systems typically installed in ships with geared medium-speed engines by means of an electric motor connected via a clutch to a pinion shaft in the gearbox (PTI).

Tangibility

energy

According to the philosopher Piyush Mathur (2017), "Tangibility is the property that a phenomenon exhibits if it has and/or transports mass and/or energy and/or momentum".

Tank

marine

An enclosed space formed by the permanent structure of a ship and which is designed for the carriage of liquid in bulk.

Tank Arrangement Plan (TAP)

marine

A very important drawing that shows the position and the data of all ship tanks. To avoid misunderstandings, the TAP must contain a sufficient number of views and cross sections.

Tank cleaning

marine

The process of removing hydrocarbon vapours, liquids or residues.

Tank cleaning machines

marine

see Washing machines.

Tank cleaning validation (TCV) system

marine

The software package for the monitoring of tank cleaning, developed by Toftejorg A/S. The system provides data reports for port authorities and statistics that help to optimise the cleaning technique.

Tank cover

marine

The protective structure intended to protect the cargo containment system against damage where it protrudes through the weather deck or to ensure the continuity and integrity of the deck structure, (IGC Code).

Tank dome

marine

The upward extension of a portion of a cargo tank. In case of below-deck cargo containment system, the tank dome protrudes through the weather deck or through a tank cover, (IGC Code).

Tank Space Information

marine

As built documentation of tanks.

Tank support system for high-temperature cargoes

marine

A special tank support arrangement for use on board product tankers used for carrying asphalt, coal tar and molten sulphur at high temperature.

Tank truck

energy

A tank truck, gas truck, fuel truck, or tanker truck (United States usage) or tanker (United Kingdom usage), is a motor vehicle designed to carry liquids or gases on roads.

TANKERS

marine

Tankers are ships carrying liquid cargoes in bulk; crude oil, oil products, chemicals, liquefied gases, molten sulphur, even orange juice.

Tap changer

energy

A device in a transformer to change the number of coils used, since the voltage ratio of a transformer is based on the ratio of the number of turns between the primary and secondary coils, changing the number of turns changes the voltage.

Target useful life (painting)

marine

The target value, in years, of the durability for which the coating system is designed.

Tarpaulin

marine

A waterproof canvas covering for a hatch or other purpose.

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