Presentation on Technique of Engine Inspection Ferdous Kabir Marketing Manager (ASNT NDT Level-II in UT, RT, PT and ISO Level-II MT) Saj Engineering & Trading Company
Aug 17, 2015
Presentationon
Technique of EngineInspection
Presentationon
Technique of EngineInspection
Ferdous KabirMarketing Manager
(ASNT NDT Level-II in UT, RT, PT and ISO Level-II MT)
Saj Engineering & Trading Company
Died 1800 boilers exploded of Sultana Ship, Lack of just time just maintenance
Died 1800 boilers exploded of Sultana , Lack of just time just maintenance
Date of Inspection : 11 and 14 October, 2012Generation Capacity: 5 MWTotal Running Time: 40,564.50 Hours
Dye Penetrant Testing
This method is commonly used for detect thesurface cracks or defects. Dye penetrantTesting (DPT) is one of the most widely usednondestructive Testing (NDT) methods. DPTcan be used to inspect almost any materialprovided that its surface is not extremelyrough.
This method is commonly used for detect thesurface cracks or defects. Dye penetrantTesting (DPT) is one of the most widely usednondestructive Testing (NDT) methods. DPTcan be used to inspect almost any materialprovided that its surface is not extremelyrough.
Dye Penetrant Testing Process
Three liquids areused in this method.
1. Cleaner2. Penetrant3. Developer
Three liquids areused in this method.
1. Cleaner2. Penetrant3. Developer
What is Magnetic ParticleTesting?
Detecting Crack by make magnetizecertain area
Detecting Crack by make magnetizecertain area
Which Material we can inspect by useMagnetic Particle Testing Method?
A material is considered ferromagnetic ifit can be magnetized. Materials with asignificant
• Iron• Nickel or• Cobaltcontent are generally ferromagnetic.
A material is considered ferromagnetic ifit can be magnetized. Materials with asignificant
• Iron• Nickel or• Cobaltcontent are generally ferromagnetic.
What Kinds of Defect we can detectby use Magnetic Particle TestingMethod?
Two kinds of defect we can detect by use thismethod?
SURFACE DEFECT
SUBSURFACE DEFECT
Two kinds of defect we can detect by use thismethod?
SURFACE DEFECT
SUBSURFACE DEFECT
What type of defect we can detect byuse this method?
• Welding Defect (Incomplete Fusion, SlagInclusion and Porosity, Inadequate JointPenetration, Under Cut)
• Seams• Laps• Grinding cracks• Quenching cracks• In-service damage• Fatigue• Overload cracks• Lamination
• Welding Defect (Incomplete Fusion, SlagInclusion and Porosity, Inadequate JointPenetration, Under Cut)
• Seams• Laps• Grinding cracks• Quenching cracks• In-service damage• Fatigue• Overload cracks• Lamination
Usage Procedure of MPI Test
Clean the partMagnetize the partApply the magnetic particles Inspect and mark defectsDemagnetize the partClean the part
Clean the partMagnetize the partApply the magnetic particles Inspect and mark defectsDemagnetize the partClean the part
How Does Magnetic ParticleInspection Work? (Cont.)
Finely milled iron particles coated with a dye pigment areapplied to the test specimen. These particles are attracted toleakage fields and will cluster to form an indication directly overthe discontinuity. This indication can be visually detectedunder proper lighting conditions.
A: Length of Indication 13 mm A: Length of Indication 13 mm A: Length of Indication 13 mm A: Length of Indication 13 mm
25mm 23mm 4mm