UFC 3-460-03
21 JANUARY 2003
USAFE. United States Air Forces in Europe
UV. Ultraviolet
VPI. Valve position indicator
Terms
Additives. Chemicals added in minor proportions to a parent substance to create, enhance, or suppress
a certain property or properties in the parent material.
Automatic valve. A fuel system component that operates hydraulically using system or pneumatic
pressure.
Barrel. The petroleum industry uses forty-two gallons as the standard barrel.
Benzene. A family of colorless, flammable, and volatile components found in very small quantities in
jet fuel. There are health exposure limits to benzene.
Blanking or blinding. The absolute closure of a pipe by fastening across it a solid plate or cap capable
of withstanding the maximum upstream pressure.
Booster stations (pumping stations). Intermediate locations along a pipeline, with storage and pumps
to overcome pressure losses by boosting pressure back to the desired level.
equipment by connecting both pieces of equipment by a bonding wire.
Booster pump. A pump installed in a long pipeline for increasing pressure.
Bottom loading. Method of filling tank trucks or tank cars through a tight connection at the bottom.
Bulk storage tank. Storage tank for fuel typically received by pipeline, tank truck, or tank car. Fuel is
transferred to other tanks (called ready-issue tanks or operating tanks) for issue to aircraft.
Calibration. The act of adjusting a piece of equipment. Calibrate a meter register with a given liquid
volume passing through the meter or a pressure gauge with a known pressure.
Cathodic protection. A method for preventing corrosion of metals by electrolysis.
Central processing unit (CPU). The computer or processor used as logic control for fuel systems.
Centrifugal force. A force that tends to impel a thing or parts of a thing outward from the center on
rotation.
Centrifugal pump. A rotating device that moves liquids and develops liquid pressure by imparting
centrifugal force.
Closed circuit. An electrical circuit or path that is complete. When a switch or circuit breaker is
placed in the "on" position, the circuit is said to be closed.
Coalescer. A filter designed to cause very small drops of water to combine into larger drops
(coalesce), which will separate from fuel by gravity.
Combustible liquid. Any liquid having a flash point at or above 38 C (100 F).
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