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INSPECTION OPERATIONS TOOLS AND TECHNIQUES for Mr Briggs
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NDT Methods Ready

  1. 1. Basic principles in material testing and application Presented by MOGEKWU CHINYE KELVIN MIACCM,CIPP VENUE HAVILAH HYDROCARBON BOARD ROOM
  2. 2.  NDT- NON DESTRUCTIVETESTING  PTW-PERMITTOWORK  PPE-PERSONAL PROTECTIVE EQUIPMENT  UT-ULTRASONICTEST  MPT-MAGNETIC PARTICLETESTING  ERP-EMERGENCY RESPONSE PROCEDURE
  3. 3.  NDT means Non DestructiveTesting.They are analysis groups which are carried out to evaluate the strength and property of a material without causing damage to same material.  It has been developed to replace the Destructive testing method which destroys the material after testing.
  4. 4.  Trip and Fall  Radiation  Pinch Points  Drop Objects  Burns
  5. 5. Tool BoxTalk Adequate PPE PTW System Risk Assessment Matrix ERP
  6. 6.  VISUALTESTING  PENETRANT TESTING  MAGNETICTESTING  ULTRASONICTESTING  RADIOGRAPHIC INTERPRETATION
  7. 7.  VisualTesting as the name implies is a form of testing which involves visual observation of welded material.  It is the mother of all other NDT procedure, because it gives clue to the various types of defects involved in welding.
  8. 8.  PenetrateTesting is used to detect surface breaks and flaws by bleed out of a colour florescent dye from flaw  It is used to detect flaws which range between 0.5mm to 10mm.  It is usually Applicable in testing the strength of lifting equipments.
  9. 9.  Clean test surface to be clear from debris and smear.  Apply Liquid Penetrant(Usually ANDROX 40 40)  Leave for at least 10 Minutes  Apply Developer which comes in a dry powder  Areas with defects will have penetrant flow out as a result of capillary action Exposed Defect
  10. 10.  Magnetic particle testing involves the use of Electromagnetic process to test for surface and subsurface discontinuities in ferromagnetic Materials.  MPT cannot be applied to non ferromagnetic materials like ceramics,aluminium,zinc and copper
  11. 11.  Clean test Surface  Calibrate Magnetic Yoke with a Pie Guage  Magnetize test surface with MagneticYoke  Spray Ferromagnetic Particles( Suspended or Liquid)  Check for areas with accumulated Ferromagnetic particles  Mark areas with defect and Prepare report.
  12. 12.  Ultrasonic inspection utilizes high frequency mechanical vibrations and most commercial ultrasonic testing is done with frequencies between 0.5 and 25MHZ.  In this method, ultrasonic waves of high frequency are used to detect flaws and cracks.  Simple UT machines can be used to detect wall thickness of a material
  13. 13.  PROBE- Sends sound waves to a test material  PULSE GENERATOR- Assists Probe in generating high and low frequency voltage  AMPLIFIER –Helps in Amplification and rectification of received signals  FREQUENCY GENERATOR –Triggers the pulse generator with frequency pulses.
  14. 14.  Aviation  Metallurgy  Aluminium Construction  Oil field  Transportation  Others
  15. 15. VISUALTESTING PENETRANTTESTING Applicable in all material testing Testing of Lifting Eyes Inspection of Oxygen bottles  Inspection of tanks Inspection of weldedTanks MAGNETICTESTING ULTRASONICTESTING Ship Construction Hulls and Mast Automobile Frames PowerTurbines Surface Tanks  Rail Construction Line Pipes Casing and Tubular
  16. 16.  Reporting in NDT helps to achieve the following:  Enhances Client satisfaction.  Proper communication with Welder/fabricator and the inspector  A reporting schematic gives the welder an idea of exact welding defects and correctional procedure.
  17. 17. S/N TYPE OF DEFECT LENGHT OF DEFECT Distance from Point A 1 Longitudinal 2 Transverse 15CM 50CM 3 Concave crown 7CM 27CM 4 Cluster Porosity 12CM 22CM 5 Incomplete root penetration Root of weld at point A 1CM
  18. 18.  QUESTIONS  COMMENTS  OBSERVATIONS

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