Understand P&ID Components and Lines

By combining various types of components (such as pumps, tanks, and valves) and lines (such as pipe lines and signal lines), you create a dynamic P&ID drawing, from which you can produce and edit data reports.

Each P&ID component and line has an assigned layer name, color, scaling factor, tagging behavior, and other properties that are set up as part of your project so that you are not required to assign properties each time you place a component or line in a drawing.

Understand P&ID Component and Line Symbols

AutoCAD P&ID includes a set of component and line symbols that are based on P&ID industry standards. The symbols are available for you to place, connect, move, stretch, and tag. You can also create reports on the symbols.

Symbols used for AutoCAD P&ID components and lines are based on the PIP (Process Industry Practices), ISA (Instrument Society of America), ISO (International Organization for Standardization), and DIN (Deutsches Institut Fur Normung e. V.) standards.

P&ID components include:

P&ID schematic lines include:

The P&ID tool palette provides a visual library of the symbols, or components and lines, that you use to create and document your P&ID drawings. You simply click a symbol on the tool palette and click in the drawing area where you want to place the symbol.

NoteYou can also drag a symbol from the tool palette and drop it in a drawing, but you may not be able to place the symbol as precisely as clicking the symbol on the tool palette and then clicking in the drawing.

Understand Component and Line Creation

If you use components and lines that are not part of the symbol libraries provided with the program, it is likely that your administrator created those symbols and added them to the tool palette while setting up your project.

Rather than creating your own components and lines, you should use either the default symbols or those symbols provided by your administrator. Otherwise, you cannot be sure that the symbols comply with your company standards or are included in your tool palette and in reports.

If you must use an AutoCAD object in your P&ID drawing, you can convert the AutoCAD object to a P&ID component or line. For more information about converting, see Convert AutoCAD Objects to AutoCAD P&ID Components or Lines.

Place, Tag, and Annotate Components and Lines

Typically, you place a component or line, tag it, and then annotate it. Not all components and lines require tagging and annotation, but in general you want to make sure all three tasks are completed as you build your P&ID drawings.