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Advanced Eddy Current Nde Steam Generator Tubing
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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 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 1978-12-31 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 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 Steam Generator Systems by : Valentin Uchanin
Download or read book Steam Generator Systems written by Valentin Uchanin and published by BoD – Books on Demand. This book was released on 2011-03-16 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is intended for practical engineers, researchers, students and other people dealing with the reviewed problems. We hope that the presented book will be beneficial to all readers and initiate further inquiry and development with aspiration for better future. The authors from different countries all over the world (Germany, France, Italy, Japan, Slovenia, Indonesia, Belgium, Romania, Lithuania, Russia, Spain, Sweden, Korea and Ukraine) prepared chapters for this book. Such a broad geography indicates a high significance of considered subjects.
Book Synopsis Modeling of Eddy Current NDE Probe for Steam Generator Tubes by :
Download or read book Modeling of Eddy Current NDE Probe for Steam Generator Tubes written by and published by . This book was released on 2003 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: Calculations were performed with a three-dimensional (3-D) finite-element model to describe the response of an eddy current (EC) probe to defects in steam generator (SG) tubing of a nuclear reactor. Such calculations could be very helpful in understanding and interpreting the EC probe response to complex tube/defect geometries associated with longitudinal inner/outer notches, roll transitions, sludge, and through-wall holes in SG tubes. The governing field equations are derived in terms of coupled magnetic vector and electric scalar potentials in the conducting media and total or reduced scalar potentials in the non-conducting regions. To assess the validity of the model, we compared the signal responses for two numerical approaches, stored-energy-and-power-loss approach and magnetic-flux approach for various tube/defect geometries. Simulation results are also presented on the tube/defect geometries for the pancake coil response and the transmitter/receiver (T/R) probe response. The results indicate that the eddy-current NDE modeling is capable of predicting EC probe response to flaws in steam generator tubes.
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 Finite-element Modeling of Eddy-current Probe for NDE of Steam Generator Tubes by :
Download or read book Finite-element Modeling of Eddy-current Probe for NDE of Steam Generator Tubes written by and published by . This book was released on 2001 with total page 5 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 March 31, 1981 by : Cas V. Dodd
Download or read book Eddy-current Inspection for Steam Generator Tubing Program Quarterly Progress Report for Period Ending March 31, 1981 written by Cas V. Dodd and published by . This book was released on 1980 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Eddy Current Test Signal Analysis for Steam Generator Tube Defect Classification and Characterization by : James Patrick McClanahan
Download or read book Advanced Eddy Current Test Signal Analysis for Steam Generator Tube Defect Classification and Characterization written by James Patrick McClanahan and published by . This book was released on 2003 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Steam Generator Group Project by : R. J. Kurtz
Download or read book Steam Generator Group Project written by R. J. Kurtz and published by . This book was released on 1987 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 December 31, 1979 by :
Download or read book Eddy-current Inspection for Steam Generator Tubing Program. Annual Progress Report for Period Ending December 31, 1979 written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Eddy-current methods provide the best in-service inspection of steam generator tubing, but present techniques can produce ambiguity because of the many independent variables that affect the signals. The current development program has used mathematical models and developed or modified computer programs to design optimum probes, instrumentation, and techniques for multifrequency, multiproperty examinations. Interactive calculations and experimental measurements have been made with the use of modular eddy-current instrumentation and a minicomputer. These establish the coefficients for the complex equations that define the values of the desired properties (and the attainable accuracy) despite changes in other significant variables. The computer programs for calculating the accuracy with which various properties can be measured indicate that the tubing wall thickness and the defect size can be measured much more accurately than is currently required, even when other properties are varying. Our experimental measurements have confirmed these results, although more testing is needed for all the different combinations of cases and different types of defects. To facilitate the extensive laboratory scanning of the matrix of specimens that are necessary to develop algorithms for detection and analysis for all the possible combinations of positions of flaws, tube supports, and probe coils, we have designed, constructed, and begun operation of a computer-controlled automatic positioner. We have demonstrated the ability to overcome the large signals produced by the edge of the tube supports. An advanced microcomputer has been designed, constructed, and installed in the instrumentation to control the examination and provide real-time calculations of the desired properties for display recording during the scanning of the tube.
Book Synopsis Improved Eddy-current Inspection for Steam Generator Tubing by :
Download or read book Improved Eddy-current Inspection for Steam Generator Tubing written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Oak Ridge National Laboratory is working on a number of steam generator and eddy-current problems, and one of the most promising developments is the use of reflection type probes. This probe consists of a driver coil encircling and coaxial with two pick-up coils, which are connected in opposition. The reflection probe is mounted perpendicular to the tube axis with one pick-up coil pressed against the surface like a pancake coil. Studies were performed to determine the best probe dimensions to maximize the ratio of defect signals to the undesired od property variations at different frequencies. Comparisons between reflection probes and the traditional circumferential or bobbin probes show that the former are more sensitive to defects and less sensitive to variation of properties outside the tube, such as tube supports, magnetite, and copper. The probe can be used in either multiple frequency or pulsed instruments in a manner similar to the bobbin probes. Since the undesired property variations have a smaller effect on the signal, they are easier to eliminate using multiple frequency or pulsed techniques. This has been demonstrated by test runs on standard steam generator tubes with different types of defects and different property variations. The reflection probe has given measurements of actual IGSCC cracks that compare well to the metallographic results. This type of probe has very good resolution and gives fine and accurate scans of the tubing, but is more expensive, complex, and slower. 10 figs., 2 tabs.
Book Synopsis Eddy Current Inspection of INCONEL-600 Steam Generator Tubes at the Tube Sheet by :
Download or read book Eddy Current Inspection of INCONEL-600 Steam Generator Tubes at the Tube Sheet written by and published by . This book was released on 1980 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of the eddy-current method for the inspection of steam generator tubing by : Stephen David Brown
Download or read book Evaluation of the eddy-current method for the inspection of steam generator tubing written by Stephen David Brown and published by . This book was released on 1977 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:
