Boiler Tube Cracks
Problem: External cracking on the OD of boiler tube bends.
Solution: An ultrasonic technique which employs a special wedge contoured with the angle beam corrected to detect ID and OD initiated transverse cracks both to be detected from the OD of the tube.
Callibration: Nominal tube thickness is 0.150” and 0.015”, 0.020” and 0.040” EDM notches were formed in the transverse position on the ID of the tube wall. All three notches are readily detected using the technique.
Typical Signal from a 0.010” deep notch
Signal from a real crack on a sample taken from the boiler.
The data shows excellent signal to noise ratio hence a reliable technique for detection and size estimation.
Mechanical Integrity's services are split into:
Product Solutions: standard or tailored turnkey solutions which meet the rigorous reliability, flexibility and ease-of-use requirements of the petrochemical industry and as tested by our own field service division
Field Servicing Solutions: provision of highly-skilled and reliable manpower to visit your location and provide the optimum NDE solution and onsite reporting
Technical Consultancy: proven and systematic approach to address complex or new NDE challenges
Training: from application training for Product Solutions to UT levels I & II
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