Leak Detection Methods

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Leak Detection Methods : A Comparative Study of Technologies and Techniques Short version Table of Contents 1 Introduction ........................................ ........................................ .............. 3 2 Leak testing Methods ........................................ ........................................ . 3 Water immersion bubble test method ........................................ ............ 4 Soap solution bubble test ........................................ ............................. 6 Pressure decay test ........................................ ..................................... 6 Vacuum decay test or Pressure rise test ........................................ ........ 8 Tracer gas leak testing ........................................ ................................ 9 Sniffing ........................................ ........................................ ..... 10 Accumulation leak testing.

gas detectors (halogen, helium and hydrogen). The first three techniques, due to their characteristics and sensitivity, can be used only for gross leak detection (300 g/y (10.5 oz) or more refrigerant leakages). Tracer gas leak testing methods are much more precise than the previous group but, in many cases, their theoretical

  Lake, Detection, Leak detection, Gas leak