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Evaluation And Field Validation Of Eddy Current Array Probes For Steam Generator Tube Inspection
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Book Synopsis Evaluation and Field Validation of Eddy-Current Array Probes for Steam Generator Tube Inspection by :
Download or read book Evaluation and Field Validation of Eddy-Current Array Probes for Steam Generator Tube Inspection written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of the Improved Eddy-Current ISI for Steam Generator Tubing program is to upgrade and validate eddy-current inspections, including probes, instrumentation, and data processing techniques for inservice inspection of new, used, and repaired steam generator tubes; to improve defect detection, classification, and characterization as affected by diameter and thickness variations, denting, probe wobble, tube sheet, tube supports, copper and sludge deposits, even when defect types and other variables occur in combination; to transfer this advanced technology to NRC's mobile NDE laboratory and staff. This report describes the design of specialized high-speed 16-coil eddy-current array probes. Both pancake and reflection coils are considered. Test results from inspections using the probes in working steam generators are given. Computer programs developed for probe calculations are also supplied.
Book Synopsis Evaluation and Field Validation of Eddy-current Array Probes for Steam Generator Tube Inspection by : Cas V. Dodd
Download or read book Evaluation and Field Validation of Eddy-current Array Probes for Steam Generator Tube Inspection written by Cas V. Dodd and published by . This book was released on 1996 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development and Field Validation of Advanced Array Probes for Steam Generator Inspection by :
Download or read book Development and Field Validation of Advanced Array Probes for Steam Generator Inspection written by and published by . This book was released on 1995 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aging of the steam generators at the nation`s nuclear power plants has led to the appearance of new forms of degradation in steam generator tubes and an increase in the frequency of forced outages due to major tube leak events. The eddy-current techniques currently being used for the inspection of steam generator tubing are no longer adequate to ensure that flaws will be detected before they lead to a shutdown of the plant. To meet the need for a fast and reliable method of inspection, ORNL has designed a 16-coil eddy-current array probe which combines an inspection speed similar to that of the bobbin coil with a sensitivity to cracks of any orientation similar to the rotating pancake coil. In addition, neural network and least square methods have been developed for the automatic analysis of the data acquired with the new probes. The probes and analysis software have been tested at two working steam generators where we have found an increase in the signal-to-noise ratio of a factor of five an increase in the inspection speed of a factor of 75 over the rotating pancake coil which maintaining similar detection and characterization capabilities.
Book Synopsis Computer Programs for the Acquisition and Analysis of Eddy-current Array Probe Data by :
Download or read book Computer Programs for the Acquisition and Analysis of Eddy-current Array Probe Data written by and published by . This book was released on 1996 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: Objective of the Improved Eddy-Curent ISI (in-service inspection) for Steam Generators Tubing program is to upgrade and validate eddy-current inspections, including probes, instrumentation, and data processing techniques for ISI of new, used, and repaired steam generator tubes; to improve defect detection, classification and characterization as affected by diameter and thickness variations, denting, probe wobble, tube sheet, tube supports, copper and sludge deposits, even when defect types and other variables occur in combination; to transfer this advanced technology to NRC's mobile NDE laboratory and staff. This report documents computer programs that were developed for acquisition of eddy-current data from specially designed 16-coil array probes. Complete code as well as instructions for use are provided.
Book Synopsis Eddy-current Inspection for Steam Generator Tubing Program Annual Progress Report for Period Ending ... by :
Download or read book Eddy-current Inspection for Steam Generator Tubing Program Annual Progress Report for Period Ending ... written by and published by . This book was released on 1983-03 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Eddy-current Inspection for Steam Generator Tubing Program Quarterly Progress Report for Period Ending ... by : Oak Ridge National Laboratory. Metals and Ceramics Division
Download or read book Eddy-current Inspection for Steam Generator Tubing Program Quarterly Progress Report for Period Ending ... written by Oak Ridge National Laboratory. Metals and Ceramics Division and published by . This book was released on 1978-03-31 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Validating eddy current array probes for inspecting steam generator tubes by : S. P. Sullivan
Download or read book Validating eddy current array probes for inspecting steam generator tubes written by S. P. Sullivan and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Electromagnetic Nondestructive Evaluation by : Toshiyuki Takagi
Download or read book Electromagnetic Nondestructive Evaluation written by Toshiyuki Takagi and published by IOS Press. This book was released on 1997 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eddy current testing is a key technology among electromagnetic non-destructive testings at present and this situation was motivated by a stringent need to detect small cracks in tubing of a steam generator of nuclear power plants. In these five years the ECT technology has been enhanced very much, demonstrating that high performanced sensors for ECT are now ready to be applied to the annual inspection of steam generator tubing with use of arrayed micro sensors for ECT. In addition to the innovative technology, an inversion technique is being theoretically developed to make reconstruction of defects possible with use of data from the arrayed sensors. Rapid growth of interest in electromagnetic nondestructive evaluation have brought together experts from different parts of the world, as reflected in this work. The book is intended for engineers, researchers and practitioners working in the area of electromagnetism.
Book Synopsis Automated Non-Destructive Testing Array Evaluation System by :
Download or read book Automated Non-Destructive Testing Array Evaluation System written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Utilities perform eddy current tests on nuclear power plant steam generator (SG) tubes to detect degradation. This report summarizes the status of ongoing research to develop signal processing algorithms that automate analysis of eddy current test data. The research focuses on analyzing array probe data for detecting, classifying, and characterizing degradation in SG tubes.
Book Synopsis Electromagnetic Nondestructive Evaluation (IV) by : Satish S. Udpa
Download or read book Electromagnetic Nondestructive Evaluation (IV) written by Satish S. Udpa and published by IOS Press. This book was released on 2000 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: A description of the state of the art in electromagnetic nondestructive evaluation (NDE) techniques. Topics covered range from magnetostatic to eddy current and microwave NDE methods. Advances in materials characterization, forward/simulation models, sensor design and inverse methodologies are discussed. The book also includes contributions on benchmark problems and solutions.
Book Synopsis Evaluation of the Eddy-current Method for the Inspection of Steam Generator Tubing by :
Download or read book Evaluation of the Eddy-current Method for the Inspection of Steam Generator Tubing written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Continued evaluation of existing eddy-current in-service inspection (ISI) methods for steam generator tubing has emphasized the effects of denting. Denting is a circumferential deformation of the tube in the support region as a result of the formation of a magnetite, Fe3O4, corrosion product on the carbon steel tube support plate in the crevice between the support plate and the tube wall. The effects of denting on eddy current inspection are twofold: (1) The detection and measurement of defects in the dented region is hampered by the distortion of the eddy-current response signals caused by the dents and (2) large dents may prevent the passage of high fill factor probes forcing the inspection teams to use a smaller probe in undented regions. Unless appropriate measures are taken, less reliable detection of defects and estimation of their depth can result. The report presents an experimental evaluation of existing eddy-current ISI methods when used to inspect dented regions. Tubes were mechanically dented to simulate various degrees of service induced denting. These tubes were then inserted in carbon steel tube support plates and the crevice region between the support plate and tube was subsequently packed with powdered magnetite. Diametral dent sizes considered during this program varied between 1 and 10 mils. Eddy-current signal patterns and strip chart recordings were obtained using a variety of test parameters, such as frequency, phase rotation and coil configuration, on tube samples containing various degrees of denting and with several types of defects in the dented system.
Book Synopsis Automated Compensation and Classification Algorithms for Array Probe Eddy Current Nondestructive Evaluation by : Pradeep Kumar Jella
Download or read book Automated Compensation and Classification Algorithms for Array Probe Eddy Current Nondestructive Evaluation written by Pradeep Kumar Jella and published by . This book was released on 2004 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Eddy-current Inspection for Steam-generator Tubing Program Quarterly Progress Report for Period Ending September 30, 1979 by : Cas V. Dodd
Download or read book Eddy-current Inspection for Steam-generator Tubing Program Quarterly Progress Report for Period Ending September 30, 1979 written by Cas V. Dodd and published by . This book was released on 1980 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Evaluation of the Influence of Vibrations Received in the Distribution Environment to the Remaining Eddy Current Probe Lifetime by : Edo Picek
Download or read book An Evaluation of the Influence of Vibrations Received in the Distribution Environment to the Remaining Eddy Current Probe Lifetime written by Edo Picek and published by . This book was released on 2001 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Eddy Current probes are used for the testing of steam generator tubing integrity in nuclear power plants. Their use environment is far more severe than the distribution environment, which includes truck and airplane delivery of small parcels. As each probe has soldered connections susceptible to damage this study was undertaken to investigate a possible influence of vibrations due to transport to a probe lifetime. A sweep vibration test was performed on a product with no packaging. It proved that the probe was able to vibrate in different ways unless restricted by the package. With the packaging solution defined in more detail a sample of 10 probes was exposed to random vibrations on a shaker table. Later these probes were tested for lifetime together with the sample of 10 virgin probes. Results were analyzed for statistical significance and the statistics proved the influence of vibrations to the probe lifetime. Finally, the laboratory testing results were compared with the probe lifetime data obtained during a real steam generator inspection."--Abstract.
Book Synopsis Eddy-current Inspection for Steam-generator-tubing Program Annual Progress Report for Period Ending December 31, 1982 by : Cas V. Dodd
Download or read book Eddy-current Inspection for Steam-generator-tubing Program Annual Progress Report for Period Ending December 31, 1982 written by Cas V. Dodd and published by . This book was released on 1983 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Eddy Current NDE Steam Generator Tubing by :
Download or read book Advanced Eddy Current NDE Steam Generator Tubing written by and published by . This book was released on 1999 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: As part of a multifaceted project on steam generator integrity funded by the U.S. Nuclear Regulatory Commission, Argonne National Laboratory is carrying out research on the reliability of nondestructive evaluation (NDE). A particular area of interest is the impact of advanced eddy current (EC) NDE technology. This paper presents an overview of work that supports this effort in the areas of numerical electromagnetic (EM) modeling, data analysis, signal processing, and visualization of EC inspection results. Finite-element modeling has been utilized to study conventional and emerging EC probe designs. This research is aimed at determining probe responses to flaw morphologies of current interest. Application of signal processing and automated data analysis algorithms has also been addressed. Efforts have focused on assessment of frequency and spatial domain filters and implementation of more effective data analysis and display methods. Data analysis studies have dealt with implementation of linear and nonlinear multivariate models to relate EC inspection parameters to steam generator tubing defect size and structural integrity. Various signal enhancement and visualization schemes are also being evaluated and will serve as integral parts of computer-aided data analysis algorithms. Results from this research will ultimately be substantiated through testing on laboratory-grown and in-service-degraded tubes.
Book Synopsis Eddy-Current Nondestructive Evaluation by : Nicola Bowler
Download or read book Eddy-Current Nondestructive Evaluation written by Nicola Bowler and published by Springer. This book was released on 2019-08-01 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the topic of eddy current nondestructive evaluation, the most commonly practiced method of electromagnetic nondestructive evaluation (NDE). It emphasizes a clear presentation of the concepts, laws and relationships of electricity and magnetism upon which eddy current inspection methods are founded. The chapters include material on signals obtained using many common eddy current probe types in various testing environments. Introductory mathematical and physical concepts in electromagnetism are introduced in sufficient detail and summarized in the Appendices for easy reference. Worked examples and simple calculations that can be done by hand are distributed throughout the text. These and more complex end-of-chapter examples and assignments are designed to impart a working knowledge of the connection between electromagnetic theory and the practical measurements described. The book is intended to equip readers with sufficient knowledge to optimize routine eddy current NDE inspections, or design new ones. It is useful for graduate engineers and scientists seeking a deeper understanding of electromagnetic methods of NDE than can be found in a guide for practitioners.
