Leakage Detection Techniques

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How to detect leakages for different mechanical work fields and their significance on energy auditing

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Leakage Detection Techniques

  1. 1. Leakage Detection Techniques<br />Done by: Wael Farah<br />
  2. 2. Different Types of Leak Sources<br />Leaks caused by defects<br />Leaks in newly manufactured products <br />Materials permitting gas diffusion and permeation <br />2<br />
  3. 3.
  4. 4. Leakage Detection Techniques<br />The spark coil technique<br />Pressure change technique<br />Overpressure methods<br />Dye penetrated method<br />Acoustical leak detection<br />4<br />
  5. 5. The spark coil technique<br />Use of high voltage or Tesla cod<br />Electromagnetic radiation is formed<br />Used in non-metal envelopes<br />Used also to estimate the inner pressure by distinguishing the color of plasma<br />Avoid due to radio-disturbances<br />5<br />
  6. 6. Pressure change method<br />Uses pressure gauges<br />Suspected leak sites can be squirted with a solvent<br />Solvent freezing causes temporary stuffing of leak<br />6<br />
  7. 7. Overpressure methods<br />Performed by fluid or gas<br />The vessel is subjected to overpressure of some bars<br />The vessel is emerged in water or the suspected points are painted by soap solution<br />7<br />
  8. 8. Dye penetrated method<br />Used to find cracks in metals and defects in welds<br />Uses a low viscosity fluid painted on one side of a suspected leak site<br />8<br />
  9. 9. Acoustical leak detection<br />Uses sonic or ultrasonic energy generated by gas<br />Leaks are detected through a sensible microphone<br />Used for testing high pressure lines and ducts<br />9<br />
  10. 10. Thank You<br />Please feel free to ask your questions<br />10<br />
  11. 11. Reference List:<br />http://www.ndt.net/article/v04n02/slov_30/slov_30.htm#3<br />11<br />

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