Non-Destructive Examination
Ultrasonic Examination (UT)
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Schematic propagation
ultrasonic wave and detected echo pattern -
UT method is used for detecting cracks, metal loss by corrosions/erosions/ pitting of various plant equipment.
Time Of Flight Diffraction (TOFD)
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TOFD method is used for detecting welding flaws in weld seams. JSW has applied TOFD technique for shop fabrication of pressure vessels since 1993. This technique is also used for maintenance inspection at site.
Magnetic Particle Examination (MT)
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MT method is used for detecting surface and shallow subsurface cracks on weld seams and basemetal of various plant equipment.
Liquid Penetrant Examination (PT)
PT method is used for detecting surface indications on weld seams, basemetal and weld overlay of various plant equipment.
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Schematic of PT -
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After