Hydrostatic testing primarily reveals?

• A. Electrical conduction
• B. Leakage and structural integrity
• C. Thermal properties
• D. Magnetic properties

Answer: (B)

Hydrostatic testing is about confirming that a pressure-containing vessel can hold pressure without leaking and without showing signs of structural weakness. When the system is filled with a liquid and pressurized, any weakness in welds, joints, or the wall itself will typically show up as leaks or visible deformation. The incompressible liquid provides a stable load, so leaks and any loss of strength under pressure are readily detected, which is exactly what this test is designed to verify. It doesn’t measure electrical conduction, thermal properties, or magnetic properties, so those aspects aren’t revealed by hydrostatic testing.