What Is Hydrostatic Pressure Testing?
In hydrostatic pressure testing a liquid is used to check for leaks before putting a pressure vessel or pipeline into service. The liquid is pressurized within the pipeline or vessel to make sure that it can withstand the pressures of normal usage.
Hydrostatic Pressure Test Procedure
In hydrostatic pressure testing, a liquid is used to check for leaks before putting a pressure vessel or pipeline into service. The liquid is pressurized within the pipeline or vessel to make sure that it can withstand the pressures of normal usage.
In order to test, the pipe or pressure vessel must be filled with a liquid. The liquid used is typically water unless water will damage the pipe or vessel. To meet ASME hydrostatic test requirements, before the test begins, the high points of the pipe or vessel must have vents to allow any air to escape as water is added. All air must be cleared before the test can be completed.
Hydrostatic Pressure Testing for Pipes and Pressure Vessels
For testing, the pressure vessel or pipeline must be filled with a liquid. The liquid is typically water unless it will damage the container. To meet ASME hydrostatic test requirements, before the test begins, the high points of the pipe or vessel must have vents to allow any air to escape as water is added. All air must be cleared before the test can be completed
Details
| ASME B31.1 Hydrostatic Test | Power piping is normally tested under the procedures outlined in ASME Section B31.1. For hydrostatic testing, the ASME hydrostatic test pressure is 1.5 times the design pressure. |
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| ASME B31.3 Hydrostatic Test | Process piping is tested under ASME Section B31.3. The ASME b31.3 hydrotest is performed at 1.5 times the design pressure. |
| ASME B31.5 Hydrostatic Test | ASME B31.5 hydrostatic testing code covers refrigerant, secondary coolant piping, and heat transfer components. These hydrostatic pressure testing standards apply to piping that can be used for temperatures as low as -320°F (-196°C). |
