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What this test helps us understand
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- the most accurate thickness of tube walls
- variations in material composition
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What we commonly test
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- the most accurate NDT Inspection process for air cooled exchangers for corrosion and or thinning
- plant inspection for all material types
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Test method summary
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- thorough cleaning of the tube bore by hydroblasting, grit blasting or chemical cleaning is required
- the ultrasonic pulses are emitted along a path parallel to the tube axis, a rotating 45 - degree mirror then reflects these pulses so that they are directed radially onto the tube wall
- reflections from the inner and outer walls follows the same path back to the transducer and the time interval between the first echo from the internal surface of the tube and the first echo from the outside surface of the tube can be used to represent the tube overall thickness
- as the mirror rotates, the ultrasonic beam is traversed around the tube circumference and each successive pulse is mapped out as a horizontal scan line on the screen of the IRIS 9000
- the results from this type of test are the most definitive yet to be invented for the inspection of tube bundle heat exchangers
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Learn more about
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- the IRIS 9000 testing system visit our suppliers site
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