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1104 views Technical Discussions Andre van Vuuren Andre van Vuuren 01:54 Nov-04-2006 Pipeline inspection Greetings Looking for a solution to detect longitudinal cracks in "in-service" pipelines 6"-12" OD, Wall thickness 12-14mm. External scanning methods only. No access to bore. Andre van Vuuren         Reply  Translate  Close   Roberto Falconio Engineering, NDT/Metrology SUPERVISOR El Salvador, Joined Feb 2000, 13 Roberto Falconio Engineering, NDT/Metrology SUPERVISOR El Salvador, Joined Feb 2000 13 05:40 Nov-04-2006 Re: Pipeline inspection Hi! You may use ultrasonic shear wave technique, I will assume per your message that cracks runs parallel to the pipe axis. In this case you may manufacture a special transducer that fit the outer surface of the pipe, and perform the scan in order to detect on the first leg in case that cracks start at the inner surface. You may also manufacture a standard with the same geometry and material of the pipe you are inspecting. You may ask to machine several EDM notches of different lenght and depth so you can evaluate the response of your UT system. Hope that help a little Best regards ----------- Start Original Message ----------- : Greetings : Looking for a solution to detect longitudinal cracks in "in-service" pipelines 6"-12" OD, Wall thickness 12-14mm. External scanning methods only. No access to bore. : Andre van Vuuren ------------ End Original Message ------------         Reply  Translate  Close   mj mj 09:50 Nov-08-2006 Re: Pipeline inspection go for b scan, if u want more details send u r quires to my email         Reply  Translate  Close   G.Madhesan Consultant, Welding ýnspector/QAQC inspector CHENNAI UNIVERSITY, Turkey, Joined Nov 2004, 10 G.Madhesan Consultant, Welding ýnspector/QAQC inspector CHENNAI UNIVERSITY, Turkey, Joined Nov 2004 10 00:43 Mar-15-2007 Re: Pipeline inspection First up all difficult to scanning at 6" pipe because of curvature;If you can use of shoe also difficult to find the scattered cracks longitutunally. If possible with limitations of service condition and temprature you can go for gamma ray. ---------- Start Original Message ----------- : Greetings : Looking for a solution to detect longitudinal cracks in "in-service" pipelines 6"-12" OD, Wall thickness 12-14mm. External scanning methods only. No access to bore. : Andre van Vuuren ------------ End Original Message ------------         Reply  Translate  Close   JW JW 05:30 Mar-19-2007 Re: Pipeline inspection ----------- Start Original Message ----------- : First up all difficult to scanning at 6" pipe because of curvature;If you can use of shoe also difficult to find the scattered cracks longitutunally. : If possible with limitations of service condition and temprature you can go for gamma ray. : ---------- Start Original Message ----------- : : Greetings : : Looking for a solution to detect longitudinal cracks in "in-service" pipelines 6"-12" OD, Wall thickness 12-14mm. External scanning methods only. No access to bore. : : Andre van Vuuren ------------ End Original Message ------------ Try using TOFD         Reply  Translate  Close   Product Spotlight NDTkit RT StandTESTIA NDTkit RT, TESTIA's Digital Radiography software The NDTkit product line software for X-ray analysi ... s. NDTkit RT is a software benefiting from the Ultis kernel which is dedicated to radiographic image analysis. It offers a set of tools and filtering processes to assist RT operators in finding relevant flaws. > 5 Showcases2 Videos NEOS III StandLogos Imaging NEOS III is Logos Imagings lightest DR system. With a built-in battery and internal wireless commu ... nication, the NEOS III is perfect for users that want to quickly assess an item. > 5 Showcases XRHRobotStar StandVisiConsult Systems & Solutions GmbH In high volume industries like automotive the requirement for a hundred percent X-ray inspection c ... reates a bottleneck in the production. The XRHRobotStar is a fully Automated Defect Recognition (ADR) capable robot-system that allows an ultra-fast in-line inspection. > 5 Showcases5 Videos Robotic laser shearography enables 100% inspection of complex, flight-critical composite structures StandDantec Dynamics GmbH An article in “Composites World Magazine” showcases Non Destructive Testing of aero-structures ... with Laser Shearography. Over the years Dantec Dynamics has supplied many solutions for the aerospace industry. Referring to specific customer projects several of these cases are examined to outline the advantages of using Laser Shearography for automated defect detection. > 5 Showcases more Showcases Share... Home Exhibition Archive Forum Jobs Members Events Directory NDT A-Z Advertise Privacy Policy Contact About © NDT.net - Where expertise comes together. The Largest Open Access Portal of Nondestructive Testing (NDT)- since 1996 We use technical and analytics cookies to ensure that we will give you the best experience of our website - More Info Accept top this is debug window