This is the abbreviation for a Boiling Liquid Expanding Vapour Explosion. It is associated with the rupture, under fire conditions, of a pressure vessel containing liquefied gas.



Related Terms

ABSORPTION TOWER

A vertical, cylindrical pressure vessel in which two fluids contact each other and one fluid absorbs certain constituents from the other. An example is the contactor in a gas sweetening system, which uses amine to absorb hydrogen sulphide and carbon dioxide from raw natural gas.

CONDENSATE SEPARATOR

A tank-type pressure vessel installed in a steam pipe to collect condensate to be trapped off and thus providing comparatively dry steam to connect machinery.

CLOSED-TYPE EXPANSION TANK

A closed pressure vessel associated with a hot water heating system that absorbs the variations in water volume caused by changes in water temperature.

BOILER AND PRESSURE VESSEL CODE

An ASME code, The Boiler and Pressure Vessel Code establishes rules of safety governing the design, fabrication, and inspection of boilers and pressure vessels, and nuclear power plant components during construction.

STEAM BOILER

A closed pressure vessel in which water is converted to steam by the application of heat.

PRESSURE VESSEL

An unfired, closed vessel used for containing, storing, distributing, distilling, processing, or otherwise handling gas, vapour, or liquid exceeding the service and size limits as defined in CSA Standard B51.

UNFIRED PRESSURE VESSEL

A vessel designed to withstand internal pressure, neither subjected to heat from products of combustion nor an integral part of a fired pressure vessel system.

DRY BACK

The baffle provided in a firetube boiler joining the furnace to the second pass to direct the products of combustion, that is so constructed to be separate from the pressure vessel and constructed of heat resistant material. (Generally refractory and insulating material)

CANADIAN REGISTRATION NUMBER (CRN)

A registration number that is allotted to pressure vessel designs by the regulatory agency of the province where the design is registered.

AIR VENT

A valved opening in the top of the highest drum of a boiler or pressure vessel for venting air.

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