Chemical Engineering > GATE 2026 > P&ID Interpretation
In the P&ID shown below, which one of the following is the function of PAH in the process? (P&ID shows PAH-101, PIC-101, PY-101, PY-102 connected to a gas storage tank T-101 with pump P-101 and valve V-101)
A
to maintain a constant pressure in the vessel by throttling the pump outlet
B
to alert when high pressure is detected in the tank
C
to measure the average pressure in the vessel and display it locally
D
to regulate the flow from the vessel to downstream users

Correct : b

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