|
| |
GLOSSARY
Break.
When used in relation to hose or piping systems, means to open a flange or coupling.
When used in relation to damage, means that the material has physically parted.
Bypass.
A means of diverting flow of fluid in a system past some part of the system through which the fluid normally
flows, as in conducting the stream around a pump station.
-C-
Carbon Dioxide.
A heavy, colorless gas, C02, which will not support combustion (therefore, useful as a fire-
extinguishing agent). It is exhaled as a waste gas by animals with lungs and absorbed by certain plants, which
then release oxygen as a waste gas.
Carbon Monoxide.
A colorless, odorless, and poisonous gas, CO, resulting from the incomplete combustion of
carbon.
Cavitation. Formation of a partial vacuum next to a rotating pump impeller. Due to the lack of pressure at this point, the
fluid being pumped will vaporize, forming a cavity of gas.
This causes a loss of pump efficiency and, if allowed to continue, can damage the pump.
The most common cause of cavation is inadequate suction pressure.
Centigrade Scale. A thermometer scale on which the interval between the freezing point and boiling point of water
is divided into 100 parts or degrees centigrade, O°C corresponding to 32°F, and 1 00°C to 212°F.
Check Valve.
A one-way or nonreturn valve that permits fluids to pass in one direction only.
The valve closes when the pressure causing flow stops.
Class of Fires.
Class A, fires of ordinary combustibles, such as paper, wood, textiles, or rubbish, and extinguished by
water. 2. Class B, fires of flammable liquids like gasoline, oil, grease, and extinguished by smothering. 3. Class
C, fires involving electrical equipment, and extinguished by nonconducting agents. 4. Class D, fires involving
burning metal.
Coalesce.
Separation of finely divided or suspended water from a petroleum product by passing the product through a
filter separator.
Contaminated Product. A product in which one or more grades or types of products have been inadvertently mixed; or a
product containing foreign matter such as dust, rust, water, or emulsions.
Glossary 2
|
