What is Hydro-Test or Hydrostatic Test?
Hydro test or Hydrostatic test is a type of pressure test performed on piping and pressure vessels to check system integrity under pressure conditions. A hydrostatic test is performed by using water as the test medium.
What is the Pneumatic Test?
The pneumatic test is a type of pressure test for checking system integrity under the pressurized condition and applied to systems where the hydro-static test is difficult to apply. A pneumatic test uses air, nitrogen, or any non-flammable and non-toxic gas.
Pressure tests (both hydrostatic and pneumatic) must always be performed under controlled conditions, following an approved test plan, and documented in a test record. A single approved test plan could be used for several similar tests, but for each test a separate test record is required.
