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WÄRTSILÄ
Encyclopedia of Marine and Energy Technology

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329 results

Blowout preventer

energy

A blowout preventer is a specialized valve or similar mechanical device, used to seal, control and monitor oil and gas wells to prevent blowouts, the uncontrolled release of crude oil or natural gas from a well.

BN-800 reactor

energy

The BN-800 reactor is a sodium-cooled fast breeder reactor, built at the Beloyarsk Nuclear Power Station, in Zarechny, Sverdlovsk Oblast, Russia.

Boarding arrangements, boarding facilities

marine

All gear, such as pilot ladders, accommodation ladders, mechanical hoists, gangways,ramps, shell doors, etc., necessary for a safe transfer of the pilot and personnel to the ship.

Boarding speed

marine

The speed of a vessel adjusted to that of a pilot boat at which the pilot can safely embark.

Boat chock

marine

A cradle or support for a lifeboat.

Boat fall, boat tackle fall, davit fall

marine

The ropes by which ship boats are lowered or hoisted.

Boat winch

marine

An electric winch for handling a lifeboat.

Boatswain, bosun

marine

The highest unlicensed rating in the deck department who is in direct charge of all deck hands and who in turn comes under direct orders of the master or chief mate or mate.

Body plan

marine

A drawing that shows frame lines in elevation. Frame lines forward of the midship section are shown on the right of the center line, while those aft of the midship section on the left of the centre line.

Body sections, frame lines

marine

The ship sections obtained by planes perpendicular to the centreline. They are drawn on a body plan and form part of the lines plan.

Boiler

marine

An apparatus used to produce steam, either for the main propulsion or for auxiliary machinery. A boiler is, in general, any closed liquid-containing vessel to which heat is applied

Boiler blowdown

energy

Boiler blowdown is water intentionally wasted from a boiler to avoid concentration of impurities during continuing evaporation of steam.

Boiler explosion

energy

A boiler explosion is a catastrophic failure of a boiler.

Boiler feedwater

energy

Boiler feedwater is an essential part of boiler operations.

Boiler mountings

marine

Fittings on a boiler to ensure its safe operation: safety valves, main steam stop valve, feed check valve, water level gauge, pressure gauge connection, air release cock, sampling connection, blow down valve, scum valve, etc.

Boiler pinch point

energy

The temperature between the exhaust gas and the water.

Boiler scale

marine

Hard deposit on the interior of a boiler plate or tube. The scale generally contains magnesium and calcium carbonates as well as calcium sulphate derived from the water used.

Boiler water

energy

Boiler water is liquid water within a boiler, or in associated piping, pumps and other equipment, that is intended for evaporation into steam.

Boiler water treatment

marine

To reduce corrosion and scale formation in boilers, boiler water must be maintained in slightly alkaline conditions by carefully controlled addition of chemicals.

Boiling liquid expanding vapor explosion

energy

A boiling liquid expanding vapor explosion is an explosion caused by the rupture of a vessel containing a pressurized liquid that has reached temperatures above its boiling point.

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