A completely full water storage tank is being hydrostatically tested to 200 psig using a positive displacement pump (PDP) with a smooth and constant discharge flow rate of 4 gpm.
The tank is protected by a relief valve that discharges to the atmosphere.
The relief valve has the following characteristics:
• The opening setpoint is 200 psig with an accumulation of 5 percent.
• The valve has linear flow characteristics and a maximum rated flow rate of 8 gpm.
The PDP is inadvertently left running when tank pressure reaches 200 psig.
With the PDP still running, at what pressure will the tank stabilize?
A. 190 psig
B. 195 psig
C. 205 psig
D. 210 psig
Show Answer
Answer: C
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