• Leak test is the determination of the rate at which a liquid or gas will penetrate from inside a (Tight) component or assembly to the outside or vice versa as a result of
a pressure differential between the Two regions or of permeation of a somewhat extended barrier.
• Type of leaks:
1 - Real leaks.
2 - Virtual leaks.
Methods of Leak Test
1 - Gas system at pressure.
a- Direct sensing.
b- Gas detection.
c- Quantity loss determination by:
c-2 Gauging differential pressure.
2 - Liquid system at pressure.
3 - Vacuum systems at pressure.
Applications of Leak Test
a. Piping and pressure vessels.
b. Evacuated systems.
c. Hermetic seals.
d. Electrical and electronic components.