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Overview of Thickness Measurement Inspection

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Articles about Thickness Measurement Inspection
  • November/December 2016 Inspectioneering Journal
    By Nolan L. Miller at SASOL North America

    This article will go through the methodology of each process that could be used in determining the structural component for the required pipe wall thickness, but will focus on the use of Beam Flexural Stress calculations and Beam Deflection calculations to determine the structural component of the required pipe wall thickness calculation.

  • July/August 2016 Inspectioneering Journal
    By Gene Larson at ECHO Ultrasonics

    This article details the basis for the lack of understanding about the potential for ultrasonic couplant auto-ignition and outlines an ALARP operating practice for mitigation.

  • September/October 2015 Inspectioneering Journal
    By A.C. Gysbers at The Equity Engineering Group, Inc.

    This article addresses a debate mechanical integrity professionals in the O&G and Chemical Processing industries periodically have about how thickness data gathered during a thickness monitoring inspection (TMI) should be recorded.

  • March/April 2015 Inspectioneering Journal
    By A.C. Gysbers at The Equity Engineering Group, Inc.

    The tubes of heat exchangers (HX), whether for a shell and tube bundle or an airfin, are typically subject to some form of nondestructive examination (NDE) to try and quantify the remaining wall thicknesses and corrosion rates to help a plant to determine remaining life or the need for intervention via re-tubing or replacement of these thin wall components.

  • July/August 2014 Inspectioneering Journal
    By A.C. Gysbers at The Equity Engineering Group, Inc.

    One of the more common inspection monitoring programs for pressure vessels is to perform thickness measurement at Corrosion Monitoring Locations (CMLs) to allow monitoring of minimum thicknesses and provide estimates for corrosion rates. These minimum thicknesses and corrosion rates are critical in supporting risk based inspection techniques or in setting half-life prescriptive re-inspection intervals.

  • Partner Content

    InVista is a lightweight, hand-held ultrasonic in-line inspection tool (intelligent pig) capable of detecting pipeline wall loss and corrosion in unpiggable or difficult-to-inspect pipelines. The pipeline geometry inspection data captured by the InVista tool is exceptionally powerful when combined with the LifeQuest™ Pipeline fitness-for-service capabilities, providing an integrated solution set for the pipeline industry.

  • Blog
    January 6, 2014 By Nick Schmoyer at Inspectioneering

    In 2013 Inspectioneering published content covering a wide array of topics, from risk-based inspection, to advanced nondestructive testing methods, to pipeline integrity management systems. Last year, we published more content than any year prior; we expect the same trend to continue into 2014.

  • November/December 2012 Inspectioneering Journal
    By A.C. Gysbers at The Equity Engineering Group, Inc.

    Piping failures still represent a frustrating and ongoing problem for processing plants. Failures are still commonly reported and contribute to large losses. In the author’s experience, piping represents the highest percentage of fixed equipment failures in petroleum refining.

  • July/August 2010 Inspectioneering Journal
    By Craig Emslie BSc at Sonomatic Ltd., and Karen Gibson at Sonomatic Ltd.

    Inspection intervals for equipment have in the past been defined in a prescriptive manner. However, industry is now embracing the Risk Based Inspection (RBI) approach which in contrast prioritises inspections based on an assessment of the risk to each individual item.

  • July/August 2007 Inspectioneering Journal
    By Sanjoy Das at Bhabha Atomic Research Centre, P.R. Vaidya at BARC, and B.K. Shah at BARC

    Degradation of materials with time during service is a common phenomenon for all engineering components. Hence periodic inspection is required to ensure structural integrity and availability for service. During in-service inspection (ISI), wall thickness measurement of insulated and non-insulated pipe is a typical non-destructive evaluation technique in the oil & gas, chemical, petrochemical and nuclear industries. Ultrasonic testing is available for wall thickness measurement, but in some cases, it may not be the preferred technique. For ultrasonic testing, accuracy is dependent on the temperature of pipe, which may carry fluid at high temperature. Hence shutdown of the installation is required. Moreover for insulated pipe, insulation has to be removed before ultrasonic testing. The radiation technique is a complementary testing method which can be carried out without disturbing the installation. In this technique electromagnetic radiation passes through the object of inspection and is finally recorded in a recording medium. The recording medium is either an industrial X-ray film or a radiation detector. This paper is devoted to detection of pipe wall thinning by the radiation technique. Two different methods i.e. radiography and radiometry, are discussed with their relative merits and demerits.

  • September/October 2000 Inspectioneering Journal
    By Russel T. Mack at National Association of Inspection Companies (NAIC)

    In part 1 of this article we covered the importance of quality assurance of UT data, that is, understanding for each particular application, the accuracy required of the UT data, and new ways/graphical program to analyze and show the interrelationships of data by location for trending. Part 1 article areas then included: -UT Data Reporting and Evaluation -Imaging UT Data Evaluating the Quality of Static UT Data -Visual Trending of UT data -Mathematical Trending of UT Data Now, in Part 2, we will cover data quality issue statistics and possible sources of poor quality UT data.

  • Partner Content

    AET is a powerful, non-intrusive inspection technique to verify the structural integrity of pressure vessels, spheres, high-temperature reactors and piping, coke drums, above-ground storage tanks, cryogenic storage tanks, and more.

  • September/October 2000 Inspectioneering Journal
    By John Reynolds at Intertek

    This article continues to outline the 101 essential elements that need to be in place, and functioning well, to effectively and efficiently, preserve and protect the reliability and integrity of pressure equipment (vessels, exchangers, furnaces, boilers, piping, tanks, relief systems) in the refining and petrochemical industry.

  • January/February 1999 Inspectioneering Journal
    By Joseph E. Pascente at Lixi, Inc.

    One of the greatest challenges facing many of refining, fossil power, and pulp and paper industries is: How to effectively examine their insulated piping?

  • September/October 1997 Inspectioneering Journal
    By John Reynolds at Intertek

    This is the fourth in a series of articles on piping inspection that I'm writing for the Journal. One of the previous ones dealt with improving thickness data taking accuracy with digital ultrasonic methods. This article is a "sister article" that deals with improving the accuracy of profile radiographic inspection techniques, also called isotope radiography, wall shots, or tangential radiographic inspection.

  • March/April 1997 Inspectioneering Journal
    By John Reynolds at Intertek

    This is the second in a series of articles on piping inspection. In the last article, I enumerated four inspection issues that I believe contribute to inadequate piping mechanical integrity in the hydrocarbon process industry.

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