Question

Which of these symbols can be found in piping and instrumentation diagrams? 

• A. (Q) and (S) only
• B. (P), (Q) and (R) only
• C. (P), (R) and (S) only
• D. (P), (Q), (R) and (S)

Hint:

P&IDs are essential for system design and operation. Ensure familiarity with the standard symbols used in process flow diagrams.

Answer 1

The Correct Option is C

The symbols (P), (Q), (R), and (S) are commonly used in piping and instrumentation diagrams (P&ID). Each symbol represents different types of equipment or instruments in the diagram:
- (P): Valve
- (Q): Pump
- (R): Flow indicator
- (S): Heat exchanger
Thus, all options (P), (Q), (R), and (S) are part of the P&ID system.