|
| |
GLOSSARY
Contamination.
The addition to a petroleum product of some material not normally present.
Common contaminants are water, dirt, sand, rust, mill scale, and other petroleum products.
Cut.
(1) Product withdrawn from a pipeline and routed into tankage. Product from the middle of a batch is a "heart cut"
(2) As pertains to earthwork, removal of high spots to level an area (3) Also the act (to cut) of promptly changing
the flow of fluid from one path to another.
-d-
Design Operating Pressure
The pressure used as a parameter in the design of a piece of equipment or a system. See
Operating Pressure.
Deterioration.
Any undesirable chemical or physical change that takes place in a product during storage or use.
Some of the more common forms of deterioration are weathering, gum formation, weakening of additives, and
change in color.
Diesel Fuel.A hydrocarbon fuel used in diesel engines. Diesel fuels used by the Armed Forces are manufacturedunder
two specifications: VV-F-800, which provides for three grades (DF-1 -2, and -A); and MIL-F-16884, which
provides for one grade (Marine).
Differential Pressure.
The difference between suction pressure and discharge pressure of a pump; increment of
pressure added by each pump operating in series in a pump station; pressure drop or loss between the inlet and
outlet of a filter, meter, or other accessory offering resistance to flow.
Differential Pressure Gage.
A pressure gage which measures differential pressure. See Differential Pressure.
Discharge Head. The pressure in feet of liquid or psig at the discharge or outlet side of a pump.
-e-
Elevation Head.
See Hydrostatic Pressure
-f-
Feet of Head.
The measure of pressure in terms of the height in feet of a column of a given fuel. This measurement
is convenient for use in hydraulic design of pipelines, since it can be applied directly to terrain elevations.
Fills. As pertains to earthwork, to level an area by filling low spots with soil. Fills should always be compacted before
equipment is placed there.
Glossary 3
|
