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Inst Tools > Blog > Practical Questions > Calculate PSV Lift Pressure

Calculate PSV Lift Pressure

Calculate the total upward force exerted on the circular roof of this cylindrical storage tank at the PSV lift pressure.

Last updated: October 27, 2020 2:06 pm
Editorial Staff
Practical Questions
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A safety device commonly installed on process vessels containing pressurized gases is a Pressure Safety Valve or PSV.

PSV Lift Pressure

In this example, a PSV protects a storage tank against rupture from excessive internal gas pressure, with the PSV set to open (“lift”) and vent the tank if the internal pressure exceeds 2 inches water column:

PSV lift pressure

Calculate the total upward force exerted on the circular roof of this cylindrical storage tank at the PSV lift pressure, expressed in the unit of tons. F = ______ tons.

Share your answers with us through the below comments section.

Read Next:

  • Rupture disk
  • Pressure Relief Valve
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  • Over Pressure Protection

Credits: Tony R. Kuphaldt

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1 Comment
  • Vijay SankaraSubramanian V says:
    May 13, 2023 at 9:27 am

    For the question attached in https://instrumentationtools.com/calculate-psv-lift-pressure/ this URL the answer is
    area 13430.31 ft
    1247.71609 m2
    12477160.9 cm2
    pressure 2 mmWC
    0.0002 ksc
    Force pressure x area
    2495.43218 kgs
    2.49543218 ton

    Reply

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