DOE-HDBK-1016/1-93
ENGINEERING FLUIDS DIAGRAMS AND PRINTS
Engineering Fluid Diagrams and Prints
EO 1.5
IDENTIFY the symbols used on engineering P&IDs for the
following basic types of instrumentation:
a.
Differential pressure cell
b.
Temperature element
c.
Venturi
d.
Orifice
e.
Rotometer
f.
Conductivity or
salinity cell
g.
Radiation detector
EO 1.6
IDENTIFY the symbols used on engineering P&IDs to denote
the location, either local or board mounted, of instruments,
indicators, and controllers.
EO 1.7
IDENTIFY the symbols used on engineering P&IDs for the
following types of instrument signal modifiers:
a.
Proportional
b.
Proportional-integral
c.
Proportional-integral-differential
d.
Square root extractors
EO 1.8
IDENTIFY the symbols used on engineering P&IDs for the
following types of system components:
a.
Centrifugal pumps
b.
Positive displacement pumps
c.
Heat exchangers
d.
Compressors
e.
Fans
f.
Tanks
g.
Filters/strainers
Symbology
To read and interpret piping and instrument drawings (P&IDs), the reader must learn the meaning
of the symbols. This chapter discusses the common symbols that are used to depict fluid system
components. When the symbology is mastered, the reader will be able to interpret most P&IDs.
The reader should note that this chapter is only representative of fluid system symbology, rather
than being all-inclusive. The symbols presented herein are those most commonly used in
engineering P&IDs. The reader may expand his or her knowledge by obtaining and studying the
appropriate drafting standards used at his or her facility.
PR-02
Rev. 0
Page 2
