A completely full water storage tank is being hydrostatically tested to 300 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 relief valve opening setpoint is 300 psig with an accumulation of 5 percent.
• The relief valve has linear flow characteristics and a maximum rated flow rate of 6 gpm.
The PDP is inadvertently left running when tank pressure reaches 300 psig.
With the PDP still running, at what pressure will the tank stabilize?
A. 305 psig
B. 310 psig
C. 315 psig
D. 320 psig
Show Answer
Answer: B
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