Page 312 - Root Cause Failure Analysis

300 Root Cause Failure Analysis

primary event A direct, although possibly not obvious,
contributor to the top event in a fault-tree
analysis.

prime Add fluid to a pump to enable it to begin
pumping.
probability The probability of an event is the ratio of the
number of times it occurs to the large number of
trials that take place.
proportional The comparative relation between things in size,
amount, etc. (i.e., ratio).
pulsation damper A device installed in a fluid piping system (gas
or liquid) to eliminate or even out the fluid-flow
pulsations caused by reciprocating compressors,
pumps, and such.
A machine that draws a fluid into itself through
an entrance port and forces the fluid out through
an exhaust port.
qualifier Statement that provides confirmed background
or support data needed to accurately define an
event or forcing function.
quantifiable Describes something that can be expressed as a
quantity or a number.
quantitative Having to do with quantity.
race (inner and outer) Either of the concentric pair of steel rings of a
ball or roller bearing.
radial Radiating from or converging to a common
center.
radius A line segment joining the center and a point on
the outside of a circle or sphere.
real-time Responses to an event are essentially
simultaneous with the event itself.
real-time data Responses to an event that essentially are
simultaneous with the event itself.
reciprocation The action of moving back and forth alternately.
recur To occur again or at intervals.
reducer See Gearbox.