protection shields the person or object from damage or injury due to harmful radiation.
RANGE - The minimum and maximum performance levels or any unit and including all
measurable points between them.
RECIPROCATING - Equipment that acts along a straight line in alternating direction, i.e., the
up and down motion of the connecting rod.
RESTRICTED - Limited, confined; prevented from moving. Also the reduction of
sectional area through which a gas or liquid must flow.
SCOPE - The extent of a activity or concept; the amount or information covered as in a book.
SHOCK - An extreme stimulation of the nerves and muscles caused by the passage of electric
current through the body. Also damage caused to mechanical equipment as result of sudden
stoppage of motion.
SLINGING - Using a looped or hanging strap to raise and lower a heavy object, or for carrying or
pipe elbow which has male threads on one end and female
STREET ELBOW - A
threads on the other.
STUD - A type of fastener, or alignment device, which has one end attached to a surface and
the other end protruding from that surface. The protruding portion of the stud may be used
as an alignment aid or, if threaded, as a fastener.
- Strap or fastening device used to hold an object in position.
TORQUE - Force around an axis. It produces a rotary or twisting motion, and is measured by
lb) or newton-meters
VALVE - A device used to control the flow of a fluid.
of any substance which is
a liquid; vapors are present in the
VAPOR - The gaseous
air around the substance.
- The twisting, bending, or other distortion of an object which alters its shape.