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534 views Technical Discussions Khazali Zin Researcher SIRIM BERHAD, Malaysia, Joined Nov 1998, 3 Khazali Zin Researcher SIRIM BERHAD, Malaysia, Joined Nov 1998 3 00:26 Jul-13-1999 Measurement of Hydrogen attack in steel pipe Can anyone help me to suggest the most accurate ultrasonic procedure to measure the presence of hydrogen attack in steel pipes applicable to petrochemical industry. I assume that attenuation measurement, backwall echo measurement or velocity measurements(thus the poisson ratio) can be used but I am now sure of thier accuracy? Is there any acceptance and rejection criteria for evaluating the severity level of this hydrogen attack? Your urgent reply is highly appreciated. Thank you.                  Reply  Translate  Close   David Hermanutz Consultant, Hbndt.com, China, Joined Jul 2012, 85 David Hermanutz Consultant, Hbndt.com, China, Joined Jul 2012 85 02:56 Jul-13-1999 Re: Measurement of Hydrogen attack in steel pipe : Can anyone help me to suggest the most accurate ultrasonic procedure to measure : the presence of hydrogen attack in steel pipes applicable to petrochemical industry. I : assume that attenuation measurement, backwall echo measurement or : velocity measurements(thus the poisson ratio) can be used but I am now sure of thier : accuracy? Is there any acceptance and rejection criteria for : evaluating the severity level of this hydrogen attack? : Your urgent reply is highly appreciated. : Thank you. AEA technology have done a lot of good work in this area utilizing TOFD, try Jan.Verkooijen@aea-technology.nl                  Reply  Translate  Close   Brian Shannon Brian Shannon 02:32 Aug-11-1999 Re: Measurement of Hydrogen attack in steel pipe : : Can anyone help me to suggest the most accurate ultrasonic procedure to measure : : the presence of hydrogen attack in steel pipes applicable to petrochemical industry. I : : assume that attenuation measurement, backwall echo measurement or : : velocity measurements(thus the poisson ratio) can be used but I am now sure of thier : : accuracy? Is there any acceptance and rejection criteria for : : evaluating the severity level of this hydrogen attack? : : Your urgent reply is highly appreciated. : : Thank you. : : AEA technology have done a lot of good work in this area utilizing TOFD, : try Jan.Verkooijen@aea-technology.nl Suggest you contact iesconde.com for further information regarding this mechanism.                  Reply  Translate  Close   Product Spotlight Mentor UT – Ultrasonic Phased Array Flaw Detector StandGE Inspection Technologies GmbH With Mentor UT, you get an accessible and efficient inspection experience. Create user-defined menus ... and workflows (“apps”) with GE’s desktop software Mentor Create to ensure consistency, even for the most complex inspections, every time. Mentor UT is the first UT device to easily allow wireless connectivity and live streaming, so you get second opinions when you need them most—in real-time. > Navic - Steerable Modular Automated Scanner StandJIREH Industries The Navic is a modular, motorized, steerable scanner designed to carry multiple attachments used ... in various scanning and inspection applications. The Navic is capable of weld scanning (girth welds and long seam welds), automated corrosion mapping, and tank scanning. > 5 Showcases5 Videos Magnetic X-Ray Pipeline Crawler StandZHONG YI NDT CO., LTD Zhong Yi brand pipeline crawler is magnetic/micro-video controlled crawler with DC X ray unit inst ... alled for checking welding of pipeline. Move steadily inside the pipeline 6''-60''diameter with speed of up to 18m/min, Max. moving diatance 5 kilometers and provide the efficient inspection of the pipeline. > 5 Showcases SONOAIR - air-coupled Phased Array Ultrasonic Inspection System StandSONOTEC Ultraschallsensorik Halle GmbH For highly attenuating materials, the performance of the system is critical. The ultrasonic sensors, ... the scanning area and the system settings should be flexibly adapted to the test task and the material. These high expectations are met with the new and modular testing system SONOAIR. With the world’s first air-coupled phased-array UT inspection system SONOAIR we developed a technology that works with up to 4 transmitter and receiver channels with freely configurable square wave burst transmitters as wells as low noise receiving amplifiers. > 5 Showcases5 Videos 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