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Utilitiesman Basic Volume 02 - Manual for electric, plumbing, water and other utilities | Next
Appendix I Glossary |
APPENDIX I
GLOSSARY
ABSOLUTE ZERO —The point where all molecular
motion ceases, -460°F.
AC — Alternating current.
AEROBIC DECOMPOSITION — Bacterial
decomposition that occurs in the presence of oxygen.
AFTERCOOLER — Device which cools the final
discharge from a compressor.
ANGLE VALVE — A stop valve that is actually a
combination valve and elbow since its outlet branch
is at right angles to its inlet branch.
ASME — American Society of Mechanical Engineers.
BILL OF MATERIAL — A list of all materials required
to complete an installation based on takeoffs and
estimates.
BOILER — An enclosed vessel that converts water to
steam of proper temperature and pressure for an
intended purpose.
BOILER SETTING — The structure that encloses a
boiler and forms a furnace.
BREECHING — Connects a boiler to the stack.
BUSHING — A plumbing fitting used to reduce the pipe
from one size to another size.
BUTTERFLY VALVE — A two-position valve with a
vertical or horizontal disk.
CAP — A plumbing fitting used to close off a length of
pipe.
CATHODIC PROTECTION — The use of material
and liquid to cause electricity to flow to avoid
corrosion.
CBMU — Construction Battalion Maintenance Unit.
CBR — Chemical, Biological, and Radiological.
CBU — Construction Battalion Unit.
CEC — Civil Engineer Corps.
CENTRIFUGAL FORCE — The force that impels a
substance to move outward from the center of
rotation.
CENTIGRADE — A thermometric scale in which 0
degrees represents the freezing point and 100
degrees represents the boiling point of water at a
pressure of 1 atmosphere. Generally used with metric
units of measure. Equal to the international
thermometric scale of Celsius.
CHECK VALVE — An automatic non-return valve or a
valve which permits a fluid to pass in one direction
but automatically closes if the fluid begins to pass in
the opposite direction.
CLARIFICATION OF WATER — The removal of
suspended materials to produce a clear, clean liquid.
COLIFORM — The coliform groups of organisms are a
bacterial indicator of contamination. This group has
as one of its primary habitats, the intestinal tract of
human beings. Coliforms also may be found in the
intestinal tract of warm-blooded animals and in
plants, soil, air, and the aquatic environment.
COMSECONDNCB — Commander, Second Naval
Construction Brigade.
COMTHIRDNCB — Commander, Third Naval
Construction Brigade.
COMPRESSOR — Pump of a refrigerating mechanism
which draws a low pressure on the cooling side of the
refrigerant cycle and squeezes or compresses the gas
into the high pressure or condensing side of the cycle.
CONDENSATION — The process of changing a vapor
to a liquid.
CONDENSER — Component in a refrigeration system
that removes and dissipates heat from a compressed
refrigerant.
CONDUCTION — The transmitting of heat from one
substance or part to another substance or part that are
in direct contact with each other.
CONVECTION — The transfer of heat by means of a
medium, such as water, air, and steam.
COUPLING — A plumbing fitting used to join two
lengths of pipe in a straight run.
DEGREE OF TEMPERATURE — Measurement of
heat intensity.
AI-1
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