Relevant bibliographies by topics / Pipeline FFT

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Pipeline FFT'

Author: Grafiati
Published: 3 June 2025
Last updated: 5 July 2025

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Journal articles on the topic "Pipeline FFT"

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Dai, Bo, and Ming Lu Ma. "An Automatic Measurement for Pipeline Thickness Detection Using Ultrasonic Method." Applied Mechanics and Materials 229-231 (November 2012): 1427–36. http://dx.doi.org/10.4028/www.scientific.net/amm.229-231.1427.

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The measurement of wall thickness of pipelines is an important procedure of pipeline corrosion inspection. This procedure can be done automatically in a computer by processing data acquired from ultrasound probe, forming C-scan image, and running thickness detection algorithms. This paper presents in detail the comparison of three ways of processing, which are FFT algorithm, twice FFT algorithm, and improved twice FFT algorithm. The final results show that improved twice FFT algorithm has the best precision compared with the other two algorithms. It has higher accuracy than FFT algorithm and less decision error than twice FFT algorithm. Using this method, defects of a pipeline can be identified and measured effectively using ultrasonic wave.
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Prasanna Kumar, G., Maturi Sarath Chandra, K. Shiva Prasanna, and M. Mahesh. "Design and Implementation of AGU based FFT Pipeline Architecture." Journal of Physics: Conference Series 2089, no. 1 (2021): 012070. http://dx.doi.org/10.1088/1742-6596/2089/1/012070.

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Abstract Present it is most needful task to get various applications with parallel computations by using a Fast Fourier Transform (FFT) and the derived outputs should be in regular format. This can be achieved by using an advanced technique called Multipath delay commutator (MDC) Pipelining FFT processor and this processor will be capable to perform the computation of a different data streams at a time. In this paper the design and implementation of AGU based Pipelined FFT architecture is done Caluclation of a butterfly is done within 2 cycles by the instructions proposed. A Data Processing Unit (DPU) is employed in this pipeline architecture and supports the instructions & an FFT Adress Generation Unit (FAGU) caluclates butterfly input & output data adresses automatically. The DPU proposed sysyem requires less area compared to commericial DSP chips. Futhermore, the proposed FAGU reduces the number of FFT computation cycles. The FFT design architecture will have real data paths. With various FFT sizes, different radix & various parallesim levels, the FFT can be mapped to the pipeline architecture. The most attractive feature of the pipelined FFT architecture is it consists of bit reversal operation so it requires little number of registers and better throughput.
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Lay-Ekuakille, Aimé, Giuseppe Griffo, Paolo Visconti, Patrizio Primiceri, and Ramiro Velazquez. "Leak Detection in Waterworks: Comparison Between STFT and FFT with an Overcoming of Limitations." Metrology and Measurement Systems 24, no. 4 (2017): 631–44. http://dx.doi.org/10.1515/mms-2017-0049.

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AbstractDetection of leakages in pipelines is a matter of continuous research because of the basic importance for a waterworks system is finding the point of the pipeline where a leak is located and − in some cases − a nature of the leak. There are specific difficulties in finding leaks by using spectral analysis techniques like FFT (Fast Fourier Transform), STFT (Short Term Fourier Transform), etc. These difficulties arise especially in complicated pipeline configurations, e.g. a zigzag one. This research focuses on the results of a new algorithm based on FFT and comparing them with a developed STFT technique. Even if other techniques are used, they are costly and difficult to be managed. Moreover, a constraint in the leak detection is the pipeline diameter because it influences accuracy of the adopted algorithm. FFT and STFT are not fully adequate for complex configurations dealt with in this paper, since they produce ill-posed problems with an increasing uncertainty. Therefore, an improved Tikhonov technique has been implemented to reinforce FFT and STFT for complex configurations of pipelines. Hence, the proposed algorithm overcomes the aforementioned difficulties due to applying a linear algebraic approach.
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Singh, S., J. Roy, U. Panda, et al. "The GMRT High Resolution Southern Sky Survey for Pulsars and Transients. III. Searching for Long-period Pulsars." Astrophysical Journal 934, no. 2 (2022): 138. http://dx.doi.org/10.3847/1538-4357/ac7b91.

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Abstract Searching for periodic non-accelerated signals in the presence of ideal white noise using the fully phase-coherent fast-folding algorithm (FFA) is theoretically established as a more sensitive search method than the fast Fourier transform (FFT) search with incoherent harmonic summing. In this paper, we present a comparison of the performance of an FFA search implementation using RIPTIDE and an FFT search implementation using PRESTO, over a range of signal parameters with white noise and with real telescope noise from the Giant Meterwave Radio Telescope (GMRT) High Resolution Southern Sky (GHRSS) survey with the upgraded GMRT (uGMRT). We find that the FFA search with appropriate de-reddening of the time series performs better than the FFT search with spectral whitening for long-period pulsars under real GHRSS noise conditions. We describe an FFA-search pipeline implemented for the GHRSS survey looking for pulsars over a period of 0.1–100 s and up to a dispersion measure of 500 pc cm−3. We processed GHRSS survey data covering ∼1500 deg2 of the sky with this pipeline. We re-detected 43 known pulsars with a better signal-to-noise ratio in the FFA search than in the FFT search. We also report the discovery of two new pulsars, including a long-period pulsar with a short duty cycle, using this FFA-search pipeline. A population of long-period pulsars with periods of several seconds or higher could help constrain the pulsar death line.
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Kavitha, MV S.Ranjitha Dr Suresh H. N. "REVIEW PAPER ON EFFICIENT VLSI AND FAST FOURIER TRANSFORM ARCHITECTURES." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 6, no. 3 (2017): 15–20. https://doi.org/10.5281/zenodo.345685.

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A fast Fourier transform (FFT) is any fast algorithm for computing the DFT. The development of FFT algorithms had a tremendous impact on computational aspects of signal processing and applied science. The decimation-in-time (DIT) fast Fourier transform (FFT) very often has advantage over the decimation-in-frequency (DIF) FFT for most real-valued applications, like speech/image/video processing, biomedical signal processing, and time-series analysis, etc., since it does not require any output reordering. Fast Fourier Transform (FFT) has the major role in obtaining the signal characteristics with minimum use of resources. Some of the algorithms have been proposed on FFT, such kind of algorithms were less effective in the performance parameters. In this paper, a variety of available FFT algorithms are presented and then different architectures are outlined by exploring the techniques and algorithms involved in each of the architectures. The widely adopted architectures and trends in architectural modification to reduce power consumption and area and to achieve high throughput are discussed.
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Zhou, Bin, Yingning Peng, and David Hwang. "Pipeline FFT Architectures Optimized for FPGAs." International Journal of Reconfigurable Computing 2009 (2009): 1–9. http://dx.doi.org/10.1155/2009/219140.

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This paper presents optimized implementations of two different pipeline FFT processors on Xilinx Spartan-3 and Virtex-4 FPGAs. Different optimization techniques and rounding schemes were explored. The implementation results achieved better performance with lower resource usage than prior art. The 16-bit 1024-point FFT with the R22SDF architecture had a maximum clock frequency of 95.2 MHz and used 2802 slices on the Spartan-3, a throughput per area ratio of 0.034 Msamples/s/slice. The R4SDC architecture ran at 123.8 MHz and used 4409 slices on the Spartan-3, a throughput per area ratio of 0.028 Msamples/s/slice. On Virtex-4, the 16-bit 1024-point R22SDF architecture ran at 235.6 MHz and used 2256 slice, giving a 0.104 Msamples/s/slice ratio; the 16-bit 1024-point R4SDC architecture ran at 219.2 MHz and used 3064 slices, giving a 0.072 Msamples/s/slice ratio. The R22SDF was more efficient than the R4SDC in terms of throughput per area due to a simpler controller and an easier balanced rounding scheme. This paper also shows that balanced stage rounding is an appropriate rounding scheme for pipeline FFT processors.
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Szwarc, V., L. Desormeaux, W. Wong, C. P. S. Yeung, C. H. Chan, and T. A. Kwasniewski. "A chip set for pipeline and parallel pipeline FFT architectures." Journal of VLSI signal processing systems for signal, image and video technology 8, no. 3 (1994): 253–65. http://dx.doi.org/10.1007/bf02106450.

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Takahashi, Yukio, and Satoshi Sekine. "A VLSI architecture for pipeline fft processor." Systems and Computers in Japan 18, no. 12 (1987): 18–28. http://dx.doi.org/10.1002/scj.4690181203.

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Nibouche, O., S. Boussakta, M. Darnell, and M. Benaissa. "Algorithms and pipeline architectures for 2-D FFT and FFT-like transforms." Digital Signal Processing 20, no. 4 (2010): 1072–86. http://dx.doi.org/10.1016/j.dsp.2009.10.028.

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Yan, Baoyong, Jialin Tian, Xianghui Meng, and Zhe Zhang. "Vibration Characteristics and Location of Buried Gas Pipeline under the Action of Pulse Excitation." Processes 11, no. 10 (2023): 2849. http://dx.doi.org/10.3390/pr11102849.

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In this paper, the attenuation of sound waves in underground gas pipelines and the vibration characteristics of pipelines are studied, and the feasibility and effectiveness of acoustic measurement of PE pipelines are verified. In this paper, the attenuation equation of sound waves in an underground gas transmission pipeline is derived based on the propagation characteristics of gas and the vibration characteristics of the pipeline itself. In order to verify the experimental results, we conducted an experimental test on the air pipeline model and verified the feasibility and effectiveness of the acoustic measurement of the PE pipeline through the test under the action of pulse excitation. Then, we detect the background noise, design the test scheme according to the characteristics of the buried pipeline, and select the test site for field test. In the test process, we collected the test data and obtained the spectrum diagram of the test data by fast Fourier transform (FFT). By analyzing the results of the spectrogram, we find that the pulse signal can penetrate the medium composed of the pipe formation, but the amplitude of the sound will be sharply attenuated. At the same time, according to the size of the peak in the spectrum, we can determine the location of the pipe. In summary, the feasibility and effectiveness of acoustic measurement of the PE pipeline are verified through experimental tests, and attenuation equations based on acoustic wave propagation characteristics and pipeline vibration characteristics are proposed. It has important practical application value for the safety monitoring and positioning of the buried gas pipeline.
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Dissertations / Theses on the topic "Pipeline FFT"

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Nicklous, Francis Edward. "The Design, Simulation and Synthesis of Pipelined Floating-Point Radix-4 Fast Fourier Transform Data Path in VHDL." Master's thesis, Temple University Libraries, 2010. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/96963.

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Electrical Engineering<br>M.S.E.<br>The Fast Fourier Transform (FFT) converts time or spatial information into the frequency domain. The FFT is one of the most widely used digital signal processing (DSP) algorithms. DSPs are used in a number of applications from communication and controls to speech and image processing. DSPs have also found their way into toys, music synthesizers and in most digital instruments. Many applications have relied on Digital Signal Processors and Application Specific Integrated Circuits (ASIC) for most of the signal processing needs. DSPs provide an adequate means of performance and efficiency for many applications as well as robust tools to ease the development process. However, the requirements of important emerging DSP applications have begun to exceed the capabilities of DSPs. With this in mind, system developers have begun to consider alternatives such as ASICs and Field Programmable Gate Arrays (FPGA). Although ASICs can provide excellent performance and efficiency, the time, cost and risk associated with the design of ASICs is leading developers towards FPGAs. A number of significant advances in FPGA technology have improved the suitability of FPGAs for DSP applications. These advances include increased device capacity and speed, DSP-oriented architectural enhancements, better DSP-oriented tools, and increasing availability of DSP-oriented IP libraries. The thesis research focuses on the design of a single precision floating-point radix-4 FFT FPGA using VHDL for real time DSP applications. The paper will go into further detail pertaining to the FFT algorithm used, the description of the design steps taken as well as the results from both simulation and synthesis.<br>Temple University--Theses
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Stuart, David Charles. "VLSI design for pipelined FFT processors." Thesis, Monterey, California: Naval Postgraduate School, 1990. http://hdl.handle.net/10945/28644.

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A system of custom cell building blocks utilizing scaleable CMOS technology is decribed. The cells are design to support the high speed, pipelined addition, subtraction, and multiplication operations neccessary in a cyclic spectral analyser or other applications involving the FFT. The cells are structured in such a manner as to permit a designer to tailor the bit-length of the operations and the number of pipline stages used. Both fixed and floating operations are supported by the system. The size and performance characteristics of devices produced using the cells are compared with previously produced Genesil Silicon Complier pipelined desings. The appendix contains designs of 16-bit mantissa, 12-bit exponent floating point multiplier and adder produced from the standard cells. If fabricated in 1.2(symbol) feature size technology, the theoretical maximum clock speed and throughput rate is 102 MHz with an asymmetric clock and 61 MHz using a symmetric clock waveform. Devices with clock speeds up to 178 MHz are possible if the number of logic cells between a pipeline stage is reduced to one
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Claesson, Jonas. "Design and Implementation of an Asynchronous Pipelined FFT Processor." Thesis, Linköping University, Department of Electrical Engineering, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-1812.

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<p>FFT processors are today one of the most important blocks in communication equipment. They are used in everything from broadband to 3G and digital TV to Radio LANs. This master's thesis project will deal with pipelined hardware solutions for FFT processors with long FFT transforms, 1K to 8K points. These processors could be used for instance in OFDM communication systems. </p><p>The final implementation of the FFT processor uses a GALS (Globally Asynchronous Locally Synchronous) architecture, that implements the SDF (Single Delay Feedback) radix-22 algorithm. </p><p>The goal of this report is to outline the knowledge gained during the master's thesis project, to describe a design methodology and to document the different building blocks needed in these kinds of systems.</p>
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Bone, Ryan T. "FPGA DESIGN OF A HARDWARE EFFICIENT PIPELINED FFT PROCESSOR." Wright State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=wright1221855371.

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Pilch, Martin. "Simulace vlnění vody v reálném čase." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2011. http://www.nusl.cz/ntk/nusl-236955.

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Task of this thesis is creation of real-time simulation of the water waves. It is implemented on Mac OS X platform using OpenGL. This thesis is based on height map surface. Heigh map is computed by suming of sinusoids with complex, time-based amplitudes. Fast Fourier transformation, Phillips spectrum and gauss random generator are used to solve this problem. The thesis is also implemented on iOS platform and optimized to run on mobile devices thanks to using programmable graphic pipeline and other drawing and computing optimizations.
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Thangella, Praneeth Kumar, and Aravind Reddy Gundla. "Complex-Multiplier Implementation for Resource Flexible Pipelined FFTs in FPGAs." Thesis, Linköping University, Department of Electrical Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-16547.

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<p>AbstractDifferent approaches for implementing a complex multiplier in pipelined FFT are considered andimplemented to find an efficient one in this project. The implemented design is synthesized on Cyclone IIand Stratix III to know the performance. The design is implemented with a focus of reducing the resourcesused. Some approaches resulted in the reduced number of DSP blocks and others resulted in reducednumber of LUTs. Analysis of Synthesis results is performed for different widths (bit lengths) of complexmultiplier approaches.</p>
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Patwardhan, Anagha. "Fast multipliers-Pipeline Wallace /." Available to subscribers only, 2007. http://proquest.umi.com/pqdweb?did=1453188901&sid=3&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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Flores, Ronald D. "Patching the United States STEM Pipeline| How a Person-Centered Analysis of "Fit" Supports Undergraduate Science Career Motivation." Thesis, California State University, Long Beach, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10976055.

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<p> Researchers are learning how to prevent the projected United States shortage of science, technology, engineering, and mathematics (STEM) professionals by retaining more undergraduates in STEM majors. Specifically, since undergraduates generally want to give back to their communities, they experience heightened science career motivation once they "fit" their communal goals with their views of science careers. However, testing the quality of fit is challenging because individuals differ in communal goals and views of science. For the present study, therefore, a person-centered analytical approach was used to identify groups of STEM undergraduates defined by combinations of communal goal endorsement and perceived communal goal affordances. Four groups were identified: Low Incongruent, Moderately Low Incongruent, Average Congruent, and Moderately High Incongruent. Results showed that undergraduates were optimally motivated when both communal goal endorsement and perceived communal goal affordances were moderately high and incongruent. Results also showed that gender and cultural identity could predict group membership.</p><p>
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Sahoo, Bibhudatta. "A new calibration technique for pipelined ADCs." Diss., Restricted to subscribing institutions, 2009. http://proquest.umi.com/pqdweb?did=1904964641&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.

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Holz, Dan. "FACTORS AFFECTING EROSION ON A NATURAL GAS PIPELINE IN THE CENTRAL APPALACHIANS." Available to subscribers only, 2009. http://proquest.umi.com/pqdweb?did=1885467581&sid=4&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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Books on the topic "Pipeline FFT"

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Stuart, David Charles. VLSI design for pipelined FFT processors. Naval Postgraduate School, 1990.

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Multiphase Flow Internal Corrosion Direct Assessment (MP-ICDA) Methodology for Pipelines. AMPP, 2022. https://doi.org/10.5006/nace_sp0116-2022.

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Scope This standard practice outlines a methodology to assess pipeline integrity because of the threat internal corrosion in onshore and offshore pipelines and other piping systems that normally carry multiphase fluids (gas, water, and oil) termed multiphase flow internal corrosion direct assessment (MP-ICDA). Liquid separators (drips), compressing stations, vessels, and other equipment not related to pipelines are not included in this standard. This standard applies to pipelines, and piping systems both onshore and offshore, containing carbon dioxide (CO2), hydrogen sulfide (H2S), oxygen (O2), and other corrosive species. Additionally, this standard applies to pipelines that continuously contain a liquid phase (water and condensate and/or oil and/or petroleum compounds), a possible solids content of various mineral scales, biofilms, or corrosion product compounds, and a continuous gas phase with fluid conditions that are not specifically covered by NACE SP01101 for wet gas internal corrosion direct assessment (WG-ICDA). Additionally, solids may be included as a phase by itself and may also be included in multiphase flow analysis of fluid streams. This standard is intended for use by pipeline operators, oil/gas producers (upstream), and other pipeline industry individuals who manage pipeline integrity (both onshore and offshore) for pipelines that are normally under multiphase loading conditions and are outside the scope of NACE SP0110,1 NACE SP0206,2 and NACE SP0208.3 Rationale The standard is being revised in accordance with AMPP’s five-year review requirement. Changes in this revision include improvements on the method of evaluating the accuracy corrosion rate modeling results that are converted to wall losses with respect to the wall losses measured in the field contained in the Detailed Examination Step. It also includes guidelines that will help unify and more clearly understand the way the Detailed Examinations are reported. The MP-ICDA methodology has been developed to meet the needs of pipeline operators and producers to assess the integrity of pipelines with respect to the internal corrosion threats posed by the fluids. MP-ICDA is a structured process that combines pre-assessment, indirect inspections, detailed examination, and post-assessment to evaluate the impact of predictable pipeline integrity threats such as internal corrosion. Specifically, the goal of MP-ICDA is to identify locations with the greatest likelihood of internal corrosion and its influencing factors, such as water content, flow regime, liquid hold-up, flow velocities, temperature and pressure changes. These locations are exposed and examined in accordance with criteria established in Section 4. The results of these examinations are used as a basis for assessing the condition and integrity of the remaining pipeline segments (those with less likelihood of corrosion). Direct assessment (DA) does not depend on the ability of a pipeline to undergo inline inspection (ILI) by smart-pigging or pressure testing, making it most valuable to those pipelines unable to accept pigs or those that cannot be hydrostatically pressure tested. This standard is intended to provide an integrity assessment methodology for internal corrosion for pipelines where ILI cannot be performed; however, the MP-ICDA methodology may also serve, complement, or assist in those cases in which ILI was conducted or is contemplated to demonstrate the reliability of the ICDA process. It can also be used for optimizing the selection/justification, inspection frequency, or prioritization of pipelines that are subjected to ILI. In multiphase flow systems, subregions of a pipeline that is identified within a region that are more susceptible to internal corrosion depend on the flow pattern that are defined by flow velocities, sudden changes of geometries, changes in elevation caused by the topography of the terrain, sharp elbows, expansions, changes in internal diameter and other changes that may influence the hydrodynamics of the flow. Multiphase flow and flow regimes can be determined by the use of flow models that have a hydrocarbon phase envelope (water and hydrocarbon), and the interaction between the gas and liquid phase, and allow the prediction under flowing conditions that shows local temperature, pressure, and fluid composition for a pipeline. Depending on the flow (i.e., velocity, gas/liquid quality, temperature, pressure, wall surface conditions, etc.), and specific operating conditions, the effects of flow regimes are considered. Flow regimes and flow hydrodynamic characteristics influence the threat of internal corrosion, and thus affect pipeline integrity. The goal of MP-ICDA is to identify confirmatory or most probable locations (MPLs) along a pipeline subregion for determination of direct assessment sites. These sites are where internal corrosion damage has been identified by means of integrating available historical information in combination with the use of flow models to determine flow regimes and internal corrosion prediction models (ICPMs) that a company deems appropriate for its specific application to predict or calculate internal corrosion rates. The focus is the identification of conditions along the length of a pipeline region so that local subregion integrity threats with respect to internal corrosion are identified for prioritized damage assessment, repair, and mitigation. MP-ICDA emphasizes the identification of damage distribution on corrosion areas inside pipelines, and the corrosion rate prediction models can fit into the overall process by serving as tools to predict the corrosion rate at these locations and the estimation of wall losses within one flow pattern (e.g., stratified, slugging, annular, or mist) within a specific pipe region and/or subregion.
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FGT phase IV expansion project: Final environmental impact statement. Federal Energy Regulatory Commission, Office of Pipeline Regulation, 2000.

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FGT phase III expansion project: Final environmental impact statement. Federal Energy Regulatory Commission, Office of Pipeline and Producer Regulation, 1993.

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FGT phase IV expansion project: Draft environmental impact statement. Federal Energy Regulatory Commission, Office of Pipeline Regulation, 1999.

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FGT phase III expansion project: Draft environmental impact statement. Federal Energy Regulatory Commission, Office of Pipeline and Producer Regulation, 1993.

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FGT phase V expansion project: Final environmental impact statement. Federal Energy Regulatory Commission, Office of Energy Projects, 2001.

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Book chapters on the topic "Pipeline FFT"

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Ma, Yongkui, and Henghao Liang. "Implementation of a Pipeline Large-FFT Processor Based on the FPGA." In Lecture Notes in Electrical Engineering. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-6571-2_78.

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Takala, Jarmo, and Konsta Punkka. "Scalable FFT Processors and Pipelined Butterfly Units." In Lecture Notes in Computer Science. Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-540-27776-7_39.

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Jung, Yongchul, Jaechan Cho, and Yunho Jung. "Low Complexity Pipelined FFT Processor for Radar Applications." In Advances in Computer Science and Ubiquitous Computing. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-9343-7_62.

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Bjesse, Per. "Automatic Verification of Combinational and Pipelined FFT Circuits." In Computer Aided Verification. Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/3-540-48683-6_33.

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Bedgood, Casey J. "Risk Assessing Succession Planning: Is the Talent Pipeline Full or All Dried Up?" In Fit for the Leadership Challenge. Productivity Press, 2022. http://dx.doi.org/10.4324/9781003335108-11.

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Bansal, Manish, and Sangeeta Nakhate. "High-Performance Pipelined FFT Processor Based on Radix-22 for OFDM Applications." In Intelligent Computing and Information and Communication. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-7245-1_15.

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Turaka, Rajasekhar, S. Ravi Chand, Tavanam Venkata Rao, and V. Kumara Swamy. "FPGA Implementation of Radix-2 Pipelined FFT Algorithm for High-throughput Applications." In Lecture Notes in Electrical Engineering. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-1111-8_57.

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Nguyen, Hung Ngoc, Cheol-Hong Kim, and Jong-Myon Kim. "An Efficient Pipelined Feedback Processor for Computing a 1024-Point FFT Using Distributed Logic." In Advances in Intelligent Systems and Computing. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0341-8_23.

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Nguyen, Ngoc-Hung, Sheraz Ali Khan, Cheol-Hong Kim, and Jong-Myon Kim. "An FPGA-Based Implementation of a Pipelined FFT Processor for High-Speed Signal Processing Applications." In Lecture Notes in Computer Science. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-56258-2_8.

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Nanni, Luca. "Computational Inference of DNA Folding Principles: From Data Management to Machine Learning." In Special Topics in Information Technology. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-85918-3_7.

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AbstractDNA is the molecular basis of life and would total about three meters if linearly untangled. To fit in the cell nucleus at the micrometer scale, DNA has, therefore, to fold itself into several layers of hierarchical structures, which are thought to be associated with functional compartmentalization of genomic features like genes and their regulatory elements. For this reason, understanding the mechanisms of genome folding is a major biological research problem. Studying chromatin conformation requires high computational resources and complex data analyses pipelines. In this chapter, we first present the PyGMQL software for interactive and scalable data exploration for genomic data. PyGMQL allows the user to inspect genomic datasets and design complex analysis pipelines. The software presents itself as a easy-to-use Python library and interacts seamlessly with other data analysis packages. We then use the software for the study of chromatin conformation data. We focus on the epigenetic determinants of Topologically Associating Domains (TADs), which are region of high self chromatin interaction. The results of this study highlight the existence of a “grammar of genome folding” which dictates the formation of TADs and boundaries, which is based on the CTCF insulator protein. Finally we focus on the relationship between chromatin conformation and gene expression, designing a graph representation learning model for the prediction of gene co-expression from gene topological features obtained from chromatin conformation data. We demonstrate a correlation between chromatin topology and co-expression, shedding a new light on this debated topic and providing a novel computational framework for the study of co-expression networks.
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Conference papers on the topic "Pipeline FFT"

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Zhao, Fangyu, Chunhua Xiao, Zhiguo Wang, Xiaohua Du, and Bo Dong. "Adaptive Hybrid FFT: A Novel Pipeline and Memory-Based Architecture for Radix-2k FFT in Large Size Processing." In 2024 IEEE International Symposium on Parallel and Distributed Processing with Applications (ISPA). IEEE, 2024. https://doi.org/10.1109/ispa63168.2024.00180.

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Liu, YanQiang, ZhiShan Liang, HongYuan Chen, and Peng Luo. "Use FFT Method for the Detection and Characterization of Pipeline’s AC Stray Current Interference." In CORROSION 2011. NACE International, 2011. https://doi.org/10.5006/c2011-11326.

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Abstract Use FFT (Fast Fourier Transform) data signal processing method for the detection and characterization of oil &amp; gas pipeline’s alternating voltage stray current interference. The results showed that this method is capable of distinguishing power frequency AC (alternating current) stray current interference from the dynamic DC (direct current) stray current of the pipeline. It can easily pick-up the DC part and AC part of specified frequency. The experiments carried out in laboratory and field showed that the result gained by FFT method is the same as that by conventional instruments, which is designed of analog filter circuit. And the carbon steel work electrodes under natural corrosion showed its potential change toward more active direction after the AC voltage is added on. All the above showed that the FFT method is an ideal tool for the detection and characterization of the buried pipeline’s AC stray current.
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Wang, H. B., K. George, T. Hong, W. P. Jepson, and H. J. Chen. "Corrosion Monitoring of Top Flow in Wet Gas Environment Using Electrochemical Noise Measurement (ECN)." In CORROSION 2000. NACE International, 2000. https://doi.org/10.5006/c2000-00045.

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Abstract The corrosion of the top flow in wet gas environment was studied in this work by using Electrochemical Noise Measurement (ECN). All the tests were carried out in a 3-inch I. D., 28-ft long acrylic pipeline. A CO2 or N2 wet gas environment was generated by using high-velocity gas to entrain low-velocity seawater, which formed a annular-mist flow in the pipeline. The ECN results show less current and voltage noise fluctuation in a wet gas environment, which suggests a low corrosion activity. The slope of voltage and current amplitude during low frequency domain in Fast Fourier Transform (FFT) plots indicates the corrosion type as uniform. The spectral noise impedance, Rsn, obtained from FFT plots is high because the liquid film is very thin, therefore the corrosion activity of top flow in wet gas environment is relatively low. The results obtained from N2 and CO2 wet gas environment give a further proof that ECN can be used to monitor the corrosion rates since the difference of the current and voltage between N2 and CO2 wet gas environment is evident. The increase of current and voltage noise fluctuation with increase in gas velocity shows that the corrosion activity increases with increase in gas velocity.
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Jabade, Vaishali, Gauri Gund, Samiksha Gudgude, and Harsh Laddha. "Pipelined FFT/IFFT 256 Points Processor." In 2024 2nd International Conference on Signal Processing, Communication, Power and Embedded System (SCOPES). IEEE, 2024. https://doi.org/10.1109/scopes64467.2024.10991069.

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Kim, Woo-Sik, Young-Pyo Kim, Young-Tai Kho, and Jaeboong Choi. "Development of Limit Load Solutions for Correded Gas Pipelines." In CORROSION 2002. NACE International, 2002. https://doi.org/10.5006/c2002-02092.

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Abstract Pipelines have the highest capacity and are the safest and least environmentally disruptive way for gas or oil transmission. Recently, failures due to corrosion defects became of major concern in maintaining pipeline integrity. A number of solutions have been developed for the assessment of remaining strength of corroded pipelines. However, these solutions are known to be dependent on material properties and pipeline geometries. In this paper, a Fitness-For-Purpose(FFP) type limit load solutions for corroded gas pipelines made of X65 steel is proposed based on experimental results and finite element analyses. For this purpose, a series of burst test with various types of corrosion defects were performed. Finite element simulation was carried out on burst test to derive failure criteria. And then, an extensive series of finite element analyses were performed to obtain a limit load solution for single corrosion defect on the basis of burst test simulation. As a result, an FFP type limit load solution for corroded X65 gas pipelines was proposed.
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Ahmad, Iftikhar, Rajab H. Gazwi, and Izeldin I. M. Elosheby. "Pipeline Integrity Management through Corrosion Mitigation and Inspection Strategy in Corrosive Environment: an Experience of Arabian Gulf Oil Company in Libya." In CORROSION 2011. NACE International, 2011. https://doi.org/10.5006/c2011-11311.

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Abstract Pipeline integrity, safety and reliability are major concerns to all pipeline operators and managers. The primary objective of pipeline integrity management (PIM) is to maintain pipeline in a fit-for-service condition while extending its remaining life in the most reliable, safe and cost effective manner. A successful pipeline integrity management program incorporates design, material selection, corrosion mitigation, monitoring and inspection, maintenance, operations, risk evaluation and communication concepts. These concepts are interlinked. Arabian Gulf Oil Company Libya has large network of oil and gas pipelines. This paper presents the experience of pipeline integrity management of AGOCO(1) pipelines through material selection, corrosion mitigation, corrosion monitoring and inspection strategies. External corrosion on buried pipeline is controlled with a combination of pipeline coatings and cathodic protection while internal corrosion is controlled with a combination of chemical inhibitors, periodic cleaning and process control. The monitoring and inspection techniques provide a way to measure the effectiveness of the corrosion control systems and provide an early warning when changing conditions may be causing a corrosion problem. This paper describes the pipeline integrity management system used for AGOCO pipelines based on standard practices of corrosion mitigation and inspection.
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Mule, Priya, and Sudhakar Mande. "12-stage FFT Implementation using cordic-based pipelined SDF Architecture." In 2024 15th International Conference on Computing Communication and Networking Technologies (ICCCNT). IEEE, 2024. http://dx.doi.org/10.1109/icccnt61001.2024.10726055.

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Jian Li, Feng Liu, Teng Long, and Erke Mao. "Research on pipeline R22SDF FFT." In IET International Radar Conference 2009. IET, 2009. http://dx.doi.org/10.1049/cp.2009.0174.

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Wang, Hung-Yu, Jhong-Jhou Wu, Chun-Wei Chiu, and Yu-Hsuan Lai. "A Modified Pipeline FFT Architecture." In 2010 International Conference on Electrical and Control Engineering (ICECE). IEEE, 2010. http://dx.doi.org/10.1109/icece.2010.1114.

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Suleiman, Adnan, Adel Hussein, Khaldoun Bataineh, and David Akopian. "Scalable FFT architecture vs. multiple pipeline FFT architectures — Hardware implementation and cost." In 2009 IEEE International Conference on Systems, Man and Cybernetics - SMC. IEEE, 2009. http://dx.doi.org/10.1109/icsmc.2009.5346639.

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Reports on the topic "Pipeline FFT"

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Hopkinson, Thomas M., and G. M. Butler. A Pipelined, High-Precision FFT Architecture. Defense Technical Information Center, 1992. http://dx.doi.org/10.21236/ada257235.

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Unknown, Author. L51658 Subsea Pig Recovery Concepts. Pipeline Research Council International, Inc. (PRCI), 1991. http://dx.doi.org/10.55274/r0010603.

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The technology and procedures for the inspection of pipelines from offshore production and process facilities to shore or other offshore installations has developed rapidly in recent years. This rapid development can be attributed to several factors including pipeline operators protecting their investment in their lines, heightened environmental protection concerns, and increasing regulatory requirements. A limited number of the offshore pipeline systems in the U.S. currently include the ability to inspect the trunkline using either an ultrasonic or magnetic particle inspection pig. This pig is moved through the pipeline with the product flow from the trunkline's point of origin offshore to an onshore or nearshore facility. As the pig moves through the line, it takes and stores measurement readings which can be downloaded and interpreted after the pig is removed from the line. While inspection pig technology can provide the pipeline operator with valuable information, several factors can prohibit development of a successful trunkline inspection pigging program. Because inspection pigs have onboard data measurement and storage facilities, they are significantly longer and heavier than foam or scraper pigs, and must be articulated to negotiate pipe bends. The minimum negotiable bend radius varies among inspection pig vendors, but is typically between 3 - 5 pipe diameters. The drive cups on an articulated pig are located in the front to prevent buckling. The cups must maintain a close fit with the inside pipe diameter to propel the pig through the pipeline and can stall or jam in a multi-diameter pipeline. The scope of the project includes the development of several basic concepts which, in principle, meet the project objectives. These concepts have been evaluated from several technical viewpoints and two primary concepts selected for further development. A preliminary design effort, carried out on both primary concepts, includes: Structure stress calculations; Detailed layouts of major assemblies and components Step by step installation, operation, and maintenance procedures; Detailed capital and operating cost development. A basic scenario of a 12"� ANSI 900# rated system in 400 ft. water depth is used for both concepts. A sensitivity analysis for the effects of greater and lesser water depths (800 ft. and 100 ft.) and a change in pipe size to 8"� nominal is also included.
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Lozev, Mark, Roger Spencer, Ta-Chieh Huang, and Pratik Patel. L52236 Ultrasonic Inspection of Hot Tap Branch Connections and Weld Sleeve-Fillet Weld using Phased Arrays. Pipeline Research Council International, Inc. (PRCI), 2006. http://dx.doi.org/10.55274/r0010149.

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This evaluatates the emerging phased-array (PA) automated ultrasonic testing (AUT) method and further assesses the performance of AUT and PA AUT techniques to detect and size flaws in the current pipelines with a relatively wide range of wall thickness. Given the critical nature of pipelines and the consequences of structural failure, designers are adopting reliability and fitness-for-purpose (FFP) design methods to ensure that structural integrity can be guaranteed throughout the entire design life. The use of reliability and FFP based design methods requires the use of improved assessment and inspection techniques that can reliably detect and size fabrication flaws produced during construction and repair. Over the last five years, AUT has been used increasingly in cross-country and offshore pipeline construction to improve defect detection and sizing reliability. AUT inspection offers many advantages over conventional manual UT including: - Improved reliability and performance (defect detection and sizing) - Ability to obtain an electronic copy of inspection results - Increased speed.
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Hanna, Benjamin, Tom Bubenik, and Barbara Padgett. PR186-203813-R01 Literature Review Pipeline Mid-wall Defect Detection and FFS Assessment. Pipeline Research Council International, Inc. (PRCI), 2021. http://dx.doi.org/10.55274/r0012076.

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A literature review on the current industry understanding of mid-wall cracking and its detection was conducted. A summary of key factors influencing mid-wall cracking and modern integrity management approaches for the phenomenon are summarized. Based on the literature review and subject matter expert interviews, gaps in the published industry knowledge were identified. These gaps will be used to drive work in the direction of backfilling the valuable information that may be used to mitigate the onset of mid-wall cracking and to identify the presence of mid-wall cracking so that the threat can be actively and effectively managed.
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Warke, R. W., and C. Ferregut. L51779 Reliability-Based Fitness for Service Assessment of Welds. Pipeline Research Council International, Inc. (PRCI), 1998. http://dx.doi.org/10.55274/r0010389.

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Requirements for the fabrication and inspection of transmission pipeline girth welds are given in national codes such as API 1104, CSA Z662, and BS 4515. Their objective is to ensure an acceptable level of quality, and implicitly, operational safety. They seek to achieve this by imposing workmanship standards which prescribe the allowable size and frequency of various discontinuities. These standards are largely arbitrary and thus highly conservative in most situations. However, the potential for economic benefit, an increasing demand for safety, and the development of fracture mechanics technology have motivated the inclusion of optional fitness-for-service (FFS)-based flaw acceptance criteria. Two major objectives of the present work were to educate those unfamiliar with structural reliability concepts, particularly as they apply to pipeline integrity, and review the worldwide codification of LRFD for industries that fabricate and maintain welded structures. The final objective was to develop a library of PSFs for pipeline girth weld flaw assessment thereby aligning girth weld fitness-for-service assessment procedures with emerging LRFD codes for transmission pipelines.
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Kwun, Hegoen, and Sang Kim. LY9DLGF High-Power Long-Range Guided-Wave Inspection of Pipelines. Pipeline Research Council International, Inc. (PRCI), 2005. http://dx.doi.org/10.55274/r0012077.

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The objective of this project was to increase the guided wave power of the magneto-strictive sensor (MsS) technology so that the test range of guided wave achievable on pipelines could be further extended. The target goal of the project was a 20-fold (or 26-dB) increase in the guided-wave signal amplitude. The extension in the test range attainable by the 20-fold increase in the guided-wave signal amplitude depends on the wave attenuation coefficient, and alpha;, of the pipe-line under testing and is equal to 26/(2 and alpha;), where the factor 2 accounts for the round trip. For example, for and alpha; = 2.0 dB/ft, the extension in the test range is 6.5 feet; for and alpha; = 1.0 dB/ft, 13 feet; for and alpha; = 0.5 dB/ft, 26 feet; for and alpha; = 0.25 dB/ft, 52 feet; for and alpha; = 0.1 dB/ft, 130 feet; for and alpha; = 0.05 dB/ft, 260 feet.
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Mohr, M. O. L51679 Diver Assisted Pipeline Repair Manual. Pipeline Research Council International, Inc. (PRCI), 1992. http://dx.doi.org/10.55274/r0010288.

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Much of the industries offshore pipeline system, especially in water depths of 100 ft. or less, is approaching its design life. As this pipeline system ages, the likelihood of a failure due to erosion and/or corrosion in any part of the system is expected to increase. Other factors such as operational errors, vessel related impacts, and environmental phenomenon all contribute to offshore pipeline failures. The basic technology for repairing damaged or failed pipelines offshore has been known for several years. This technology continues to be refined and developed to meet more hostile environments and to improve reliability. At the same time, attempts are being made to minimize the time taken to affect a repair, thereby reducing the downtime of the line and the total cost of the repair. Three volumes intended to provide the field engineer a guide for the identification and selection of an appropriate diver-assisted repair method for the determination of the required service support, the location of the appropriate repair hardware, and an estimation of the time and cost associated with the repair.
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Alexander and Bedoya. L52328 Composite Repair of Mechanically-Damaged Pipes. Pipeline Research Council International, Inc. (PRCI), 2012. http://dx.doi.org/10.55274/r0010019.

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Composite materials continue to gain wider acceptance in the pipeline industry for repairing a range of pipeline anomalies. This success is due in large part to two factors. The first contributor is the execution of comprehensive research programs such as the first PRCI MATR-3-3, State of the Art Assessment of Composite Repair Systems and this second program contained herein focused on evaluating composite materials to repair damaged pipelines. The second factor associated with the widespread use of composite materials is the successful two-decade history that composite materials have had in repairing pipelines. While there have been a few unfortunate incidents in the field (primarily related to poor installation), composite materials have proven themselves to be well suited for repairing high pressure gas and liquid pipelines. The need existed for a set of integrity assessment procedures and guidelines to ensure proper use and application of composite repair materials for mechanically-damaged pipes. The results of this program indicate that when properly designed and installed, composite repair systems are able to restore integrity to mechanically-damaged pipes to a state that makes them fit for continued use at their normal design conditions. When composite materials are used for repairs, whether the repair involves corrosion, dents, or other anomalies, an integrity assessment should be completed. The integrity assessment procedures and guidelines presented in this report include an estimate of the future operating conditions to ensure that the design is adequate for the intended service.
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Robert, Gillian. PR-420-153722-R01 Pipeline Right-of-Way Ground Movement Monitoring from InSAR. Pipeline Research Council International, Inc. (PRCI), 2018. http://dx.doi.org/10.55274/r0011463.

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Longwall mining induces large surface motion that may impact active pipelines. Typical remediation for longwall mining involves shutting down and exposing the pipeline. The use of InSAR has the potential to provide accurate measurements confirming the expected ground movement that will occur with the mining operations. Used correctly, with an appropriate survey design, InSAR can provide extremely high densities of ground movement over time. Exploiting the wide-area capabilities of InSAR could become an important part of integrity management for pipelines where longwall mining is a consideration. InSAR surveys are well suited to the observation of spatially and temporally smooth movements. These movements can be very small (millimetres in months) or larger in areal extent and movement. We have previously shown the ground movement (of 9.8 ft in 12 years) along a pipeline associated with an enhance oil recovery operation. This work examines some of the design considerations necessary to observe fast, large scale deformation with InSAR. This is accomplished through modelling and through the examination of data captured over a pipeline/longwall mine in Pennsylvania. The qualitative description of the passage of the miner is very good. The local ground conditions in Pennsylvania make a more thorough examination of the ground movement available from SAR less accurate than it would be in regions better suited to InSAR measurements (for instance Wyoming).
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Fourie and Tullmin. L51912 Corrosion-CP Monitoring of Locations Remote from a Test Station. Pipeline Research Council International, Inc. (PRCI), 2002. http://dx.doi.org/10.55274/r0010624.

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It is accepted that many situations exist on pipelines where a significant length of the pipeline (typically 2000 ft to 5 miles) is either totally inaccessible or access is so difficult or expensive that monitoring is not done at the required frequency. The need for finding a technique to allow the corrosion engineer to monitor CP levels of inaccessible locations from an accessible remote location has therefore been identified. A study to investigate all possible techniques available to achieve the above objective and to analyze typical scenarios requiring this approach has therefore been undertaken. Numerous techniques varying from pipe-to-soil type measurements, above ground current attenuation measurements, direct measurement of pipeline current, and measurement of the AC impedance response of the inaccessible section of pipeline were identified. In addition, some novel remote monitoring methods applicable to hostile inaccessible locations were identified. Analysis of these techniques in relation to the problem lead to the development of an algorithm to facilitate the choice of possible techniques under specific conditions.
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