Relevant bibliographies by topics / Pipe system and leak detection

Contents

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

Academic literature on the topic 'Pipe system and leak detection'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Pipe system and leak detection"

1

Shi, He, Jinzhe Gong, Angus R. Simpson, Aaron C. Zecchin, and Martin F. Lambert. "Leak detection in virtually isolated pipe sections within a complex pipe system using a two-source-four-sensor transient testing configuration." Journal of Hydroinformatics 22, no. 5 (July 16, 2020): 1306–20. http://dx.doi.org/10.2166/hydro.2020.170.

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Abstract Leak detection in complex pipeline systems is challenging due to complex wave reflections. This research proposes a new technique for leak detection in targeted pipe sections within complex water supply pipe systems using controlled hydraulic transient pressure waves. To ‘virtually isolate’ a targeted pipe section for independent analysis, a two-source-four-sensor transient testing configuration is used to extract the transfer matrix of the targeted pipe section, and it is independent of the system boundary conditions. The imaginary part of the difference between two elements in the transfer matrix is sensitive to leaks. The result should be zero if no leak is present, while a leak will introduce a sinusoidal pattern. An algorithm is developed to extract the leak information, which is applicable to multiple leaks. Two numerical case studies are conducted to validate the new leak detection technique. Case 1 is on a single pipe system with two leaks and deteriorated pipe sections, and pulse pressure waves are used as the excitation. Case 2 is on a simple pipe network with one leak, and pseudo-random binary signals are used as the excitation. The successful determination of the leak location and impedance validates the concept.
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2

Gao, Lin, Lili Dong, Jianguo Cao, Shaofeng Wang, and Wenjing Liu. "Acoustic Emission-Based Small Leak Detection of Propulsion System Pipeline of Sounding Rocket." Shock and Vibration 2020 (July 31, 2020): 1–9. http://dx.doi.org/10.1155/2020/8875939.

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For pipes connected by pipe joints, leaks in the pipeline system are likely to occur at the pipe joints as opposed to the tube itself. Thus, early detection is critical to ensure the safety of the pipeline system. Based on acoustic emission (AE) techniques, this paper presents an experimental research on small leak detection in gas distribution pipelines due to loosening of the pipe joint connection. Firstly, the acoustic characteristics of leak signals are studied; then, features of signals are extracted. Finally, a classifier based on the support vector machine (SVM) technology is established, and the qualified features are selected to detect the leak. It is verified that the main frequency of the AE small leak signal due to the failure of the pipe joint is focused in the range of 33–45 kHz, and the algorithms based on SVM with kernel functions all can reach a better estimation accuracy of 98% using the feature “envelope area” or the feature set {standard deviation (STD), root mean square (RMS), energy, average frequency}.
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Marmarokopos, Konstantinos, Dimitrios Doukakis, George Frantziskonis, and Markos Avlonitis. "Leak Detection in Plastic Water Supply Pipes with a High Signal-to-Noise Ratio Accelerometer." Measurement and Control 51, no. 1-2 (March 2018): 27–37. http://dx.doi.org/10.1177/0020294018758526.

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A method for detecting leaks in plastic water supply pipes through analysis of the pipe’s surface vibration using a high signal-to-noise ratio accelerometer is proposed and examined. The method involves identification of the changes in vibration frequencies caused on the pipe by the leak and is developed from and examined with respect to detailed experiments. The results are promising, showing that leak detection in plastic pipes is possible provided that the sensor is placed at a small distance from the leak, since wave attenuation in plastic is strong. The results indicate that the methodology has the potential to be a new and competitive type of mobile leak detection system.
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Kim, Youngseok, Haewook Jung, Jaesuk Ryou, and Jaehyuk Choi. "A Basic Experimental Study on Analysis of Leak Signal and Monitoring Method for Water Supply Pipe." Applied Sciences 11, no. 5 (February 26, 2021): 2097. http://dx.doi.org/10.3390/app11052097.

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Water supply systems are essential elements for human life and industry, and water leaks and water supply cut-off may cause major problems. Local water leaks and pipe failures in the water supply system are inevitable problems due to the aging of pipes. Therefore, leakage detection and prevention are required to monitor the integrity of the water supply system. This paper is a fundamental study on the applicability of the smart bolt, which was developed as a monitoring system to detect water leakage in water supply monitoring. Detection experiments were conducted using a smart bolt with a built-in strain sensor and an accelerometer. Through finite element analysis using ANSYS 2019 R2 and tensile strength testing, the strength of the smart bolt was confirmed to have the acceptable tensile strength. The smart bolt used in this study was verified to meet the allowable criteria of torque and tensile stress for a municipal water supply system. The frequency responses of the simulated leakage pipe system, according to the leakage of the valve and the main pipe, were analyzed, and a leak signal at the valve leak point was detected in the 60-Hz band. The main pipe leaking point was observed to produce a leak signal with a much higher-order mode than that of the valve leak point. Therefore, the smart bolt can be applied to detect warning leak signs from water supply valves and to monitor for loosening of the bolts.
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Chen, Si Jia, Yu Shao, Liang Tao, Ying Ying Zhao, Han Feng Jing, and Tu Qiao Zhang. "Experimental Test of Dynamic Moving Characteristics for Leak Detecting-Ball in Water Mains." Advanced Materials Research 955-959 (June 2014): 3385–88. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.3385.

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The leak detecting-ball moving in pipes combined the sensors of the acoustic leak detection achieves the high responsiveness to small leaks of the water distribution system (WDS). The dynamic characteristics of the single sphere moving inside pressure pipes are studied for optimal design of the leak detecting-ball. The experimental balls having different densities are made of three types of material by using 3D printing, including tetrafluoroethylene (ETFE), photosensitive resin (PR) and wax. The balls have densities from 1.06 to 1.35 and different diameters, ball-to-pipe diameter ratios from 0.32 to 0.5. The Reynolds numbers of the pipe flows are from 1400 to 50000. The moving velocity of the balls with different pipe flow velocities, ball densities, and ball-to-pipe diameter ratios are investigated through the laboratory experiments. The velocities of balls in some of the experimental tests are greater than the average flow velocity. These larger balls rolled faster than the average flow velocity because of the maximum thrust by the pressure flow in the center of the circular tube section.
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Li, Xing Quan, Chang Guo, and Si Jing Gao. "GPRS-Based Network of Underground Gas Pipeline Leak Detection System." Applied Mechanics and Materials 295-298 (February 2013): 2451–54. http://dx.doi.org/10.4028/www.scientific.net/amm.295-298.2451.

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This article describes the overall structure and components of the gas leak detection system for underground pipe network, proposed difficulties and solutions that exist in the system design process, analyzed how to use the existing wireless GPRS network and gas sensing technology, real-time monitoring of the underground pipe network gas leak from the means of detection, data transmission, measures to combat environmental aspects.
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7

Tylman, W., G. J. Anders, and R. Ghafurian. "Novel Leak Detection System for Pipe Type Cable Installations." IEEE Transactions on Power Delivery 21, no. 3 (July 2006): 1028–34. http://dx.doi.org/10.1109/tpwrd.2006.874657.

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Soares, Alexandre Kepler, Dídia I. C. Covas, and Luisa Fernanda R. Reis. "Leak detection by inverse transient analysis in an experimental PVC pipe system." Journal of Hydroinformatics 13, no. 2 (October 4, 2010): 153–66. http://dx.doi.org/10.2166/hydro.2010.012.

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Leakage reduction in water supply systems and distribution networks has been an increasingly important issue in the water industry since leaks and ruptures result in major physical and economic losses. Hydraulic transient solvers can be used in the system operational diagnosis, namely for leak detection purposes, due to their capability to describe the dynamic behaviour of the systems and to provide substantial amounts of data. In this research work, the association of hydraulic transient analysis with an optimisation model, through inverse transient analysis (ITA), has been used for leak detection and its location in an experimental facility containing PVC pipes. Observed transient pressure data have been used for testing ITA. A key factor for the success of the leak detection technique used is the accurate calibration of the transient solver, namely adequate boundary conditions and the description of energy dissipation effects since PVC pipes are characterised by a viscoelastic mechanical response. Results have shown that leaks were located with an accuracy between 4–15% of the total length of the pipeline, depending on the discretisation of the system model.
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Song, YJ, and SZ Li. "Leak detection for galvanized steel pipes due to loosening of screw thread connections based on acoustic emission and neural networks." Journal of Vibration and Control 24, no. 18 (July 11, 2017): 4122–29. http://dx.doi.org/10.1177/1077546317720319.

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Galvanized steel pipes with screw thread connections are widely used in indoor gas transportation. In contrast with the failure of pipe tubes, leakage in this system is prone to occur in the screw thread connections. Aiming at this specific engineering application, a method based on acoustic emission (AE) and artificial neural networks (ANNs) is proposed to detect small gas leaks. Experiments are conducted on a specifically designed galvanized steel pipe system with the manipulated leak occurring in the screw thread connection to acquire the raw AE data. The features in the time and frequency domains are extracted and selected to establish an ANN model for leak detection. It has been validated that the developed ANN-based leak detector can achieve an identification accuracy of over 98%. It is also verified that the proposed model is effective even when the AE signals due to a small leak pass over two screw thread connections or an elbow connection.
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Harsha Vardhini, P. A., and G. Janardhana Raju. "Design of Internet of Things Based Smart and Efficient Water Distribution System for Urban and Agriculture Areas." Journal of Computational and Theoretical Nanoscience 17, no. 9 (July 1, 2020): 4688–91. http://dx.doi.org/10.1166/jctn.2020.9301.

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Groundwater plays an important part in India’s economy. It provides water to about 85% urban and rural proportion for household and agriculture needs. India being the 2nd largest in world population with a diverse population that is three times the size of the US but one-third the physical size. World Bank according to, how many people are living in poverty is still extremely disproportionate to the number of middle-income people, with a combined rate of over 52 percent of rural and urban poor. One of the major drawback in the Indian water distribution systems was found to be loss of water resource due to leakage of pipes. India experiences both floods and droughts periodically. Consequently, innovations in pipe leak detection recognition and reparation methods are being implemented. But still identifying the leaks at a early point is vital in order to ensure minimal water wastage in distribution systems. A major component of pipe leak detection is the ability to reliably locate the place of leakage in pipes by minimal invasion. Water transport industry is increasingly concerned about leakages in water delivery pipelines. To pacify them and thereby supporting the economy by saving the water resources with proper and sufficient utilization of the same, this paper projects the solution to overcome pipe leakage issues with IoT dependent smart water monitoring system.
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Dissertations / Theses on the topic "Pipe system and leak detection"

1

Chatzigeorgiou, Dimitris M. "A reliable & autonomous robotic in-pipe leak detection system." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/100118.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2015.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 145-151).
Leaks are the major factor for unaccounted losses in every pipe network around the world (oil, gas or water). In most cases the deleterious effects associated with the occurrence of leaks may present serious economical and health problems. Therefore, leaks must be quickly detected, located and repaired. Unfortunately, most state-of-the-art leak detection systems are of limited applicability, lack in reliability or depend on user experience for data interpretation. In this dissertation we present a new, autonomous, in-pipe, leak sensing system; the "MIT Leak Detector". The proposed system is able to perform autonomous leak detection in pipes and, thus, eliminates the need for user experience. In addition, the sensing methodology under consideration is independent of pipe material and surrounding medium, thus it is widely applicable. As shown in the experimental section of the thesis, the detection principle proves to be very reliable and sensitive to small leaks in pipes. Last but not least, the robotic system is equipped with intelligence in order to use the acquired sensor signals to estimate the leak size and flow rate without user intervention. We start the thesis by describing the fundamental concept behind detection and present the proposed design. The detection principle in based on the presence of a pressure gradient in the neighborhood of any leak in a pressurized pipe. This phenomenon is translated into force measurements via a carefully designed and instrumented mechanical embodiment. In addition, an analytic dynamic model of the robotic detector is derived. Further study and analysis show that the proposed system can sense leaks at any angle around the circumference of the pipe by utilizing two force measurements at specific locations. Finally, a prototype is built and experiments are conducted in controlled laboratory conditions in compressed air pipes.
by Dimitris M. Chatzigeorgiou.
Ph. D.
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Choi, Changrak. "Robot design for leak detection in water-pipe systems." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/70434.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2012.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 113-116).
Leaks are major problem that occur in the water pipelines all around the world. Several reports indicate loss of around 20 to 30 percent of water in the distribution of water through water pipe systems. Such loss of water represents critical waste of valuable resources, especially in countries such as Saudi Arabia where water is scarce. Moreover, leaks provide pathways for outside contaminants to enter into water pipe system which can deteriorate the quality of water and pose health risks to those drink from it. Considering these negatives, the importance of detecting where the leaks occur within vast network of water pipe system cannot be overemphasized. Further, for accurate and effective detection of the leaks, an in-pipe approach is taken which differs from previous detection methods. This thesis is on the design of mobile robotic platform that carries the necessary sensor and travels inside the water pipe systems. To begin with, experiments were carried out to investigate the suitability of using acoustic sensor to detect the leaks and favorable results were obtained. Then design specification of the mobile robotic platform that will carry the sensor is discussed with brief description of each components of the robot given. As components for the mobile robotic platform, a rigid-flexible robotic joint is developed that enables the robot to travel through bends and turns. Further, a novel braking mechanism using permanent magnet is presented. The mechanism results in a friction controllable leg that can be used to slow down and control the speed of robot in the presence of water flow. Finally, possible candidates for propulsion unit are discussed and evaluated with guidance for future work to be progressed.
by Changrak Choi.
S.M.
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Chatzigeorgiou, Dimitris M. "Analysis and design of an in-pipe system for water leak detection." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/62529.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2010.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 131-133).
Leaks are a major factor for unaccounted water losses in almost every water distribution network. Pipeline leak may result, for example, from bad workmanship or from any destructive cause, due to sudden changes of pressure, corrosion, cracks, defects in pipes or lack of maintenance. The problem of leak becomes even more serious when it is concerned with the vital supply of fresh water to the community. In addition to waste of resources, contaminants may infiltrate into the water supply. The possibility of environmental health disasters due to delay in detection of water pipeline leaks have spurred research into the development of methods for pipeline leak and contamination detection. This thesis is on the analysis and design of a floating mobile sensor for leak detection in water distribution pipes. This work covers the study of two modules, namely a "floating body" along with its "sensing module". The Mobility Module or the floating body was carefully studied and designed using advanced CFD techniques to make the body as non-invasive to the flow as possible and to avoid signal corruption. In addition, experiments were carried out to investigate the effectiveness of using in-pipe measurements for leak detection in plastic pipes. Specifically, acoustic signals due to simulated leaks were measured and studied for designing a detection system to be deployed inside water networks of 100mm pipe size.
by Dimitris M. Chatzigeorgiou.
S.M.
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Covas, Dídia Isabel Cameira. "Inverse transient analysis for leak detection and calibration of water pipe systems modelling special dynamic effects." Thesis, Imperial College London, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.406338.

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Saleeby, Kyle Scott. "Design of soft-body robot with wireless communication for leak detection in large diameter pipe systems." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/112547.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2017.
Cataloged from PDF version of thesis.
Includes bibliographical references.
Water leaks pose a major problem of efficiency and cost to municipalities and industries that cover significant area. While current commercial methods to address these problems do not provide convenient or low cost methods to detect leaks, a soft-body pipe leak detection robot has been developed to traverse small, 50mm diameter water pipe systems. This robot has proven to be effective in small diameter pipes, but its scalability for large diameter pipes is unknown. The focus of this thesis is to scale up the leak detection robot for 300mm diameter pipes and fabricate a robot prototype. In particular, the relationship between the shape of the robot and its maneuverability was explored, such that it was designed to passively travel through the pipe, driven by water flow. The robot was designed to successfully pass through changes in pipe diameter, pipe bends, and through partially clogged regions. To detect and distinguish pipe leaks from other debris in the pipe, two sensors were integrated in the robot. Experimental testing was conducted with the robot to verify functionality of its leak detection sensors. Supporting electronics were also implemented to wirelessly charge and communicate with the robot.
by Kyle Scott Saleeby.
S.B.
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Nelson, Berg Joakim, and Jonathan Lee. "A pre-study on the compressed air system at Ljunghaell AB." Thesis, Högskolan i Halmstad, Sektionen för ekonomi och teknik (SET), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-25648.

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The Swedish industry uses large volumes of compressed air. The compressed air process isenergy intensive and creates large amounts of excess heat. It is therefore important to utilizethe excess heat, optimize the operation of the compressors and to have a regular maintenanceon the system. This thesis is a pre-study to make a compressed air system energy efficient andis done in collaboration with Ljunghäll AB. Ljunghäll AB is one of Northern Europe's leadingdie casting companies and are located in Södra Vi, Sweden. The purpose is to describe andmap the compressed air system in the old part of the facility in Södra Vi. The thesis will alsogive an explanation of how Ljunghäll AB can improve the compressed air system. Providethem suggestions for energy savings and lower the environmental impact of production. Theobjective of the thesis is to create an understanding of how improvements in the compressedair system can be done by studying the operation, compressor, pipe system and leak detecting.The economic aspects of the solutions together with the effect of noise and engine operationof the compressors have not been taken into consideration. To reach improvement measures avisit to the facility in Södra Vi was made, where measuring and mapping was executed andthen compared with earlier studies and literature. The conclusions of the thesis show thatLjunghäll AB has a good operation and control of the compressors, through the variable speeddrive and steering system. It also showed that the choice of the existing compressors are goodfor their compressed air usage. The study also resulted in the following suggestions for theenergy efficiency and lowering of the environmental impact of production at Ljunghäll AB’scompressed air system: Water heat recovery, replacement of old pipes, cover the leakage,regular maintenance of compressors and fittings, training in compressed air for workers,centralized compressor central and sectioning of the pipe system.
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Garay, Luis I. (Luis Ignacio). "Evaluating an experimental setup for pipe leak detection." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/85780.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2010.
Cataloged from PDF version of thesis.
Includes bibliographical references (page 33).
An experimental setup with 4 inch inner diameter PVC pipe modules is designed to mimic a real life piping system in which to test possible leak detection mechanisms. A model leak detection mechanism is developed which consists of a ring with threads that follow the streamlines of the flow inside the pipes, allowing for a visualization of the flow patterns. Two experiments were conducted in order to test the effect of the leak on the threads of the detection mechanism. The first experiment was successful in that the threads were clearly affected in the proximity of the leak; however, it was not realistic because of the lack of cross flow. The second experiment allowed for cross flow. On the other hand, this experiment failed in that the threads of the detection mechanism were not affected by the leak due to the small leak flow rate. A theoretical model of the second experimental setup is proposed in order to estimate how the exit hole diameter will affect the leak and outflow volumetric flow rates. From the model it is concluded that a small exit hole is needed to increase the leak flow rate; however this would reduce the cross flow rate inside the system to a value bellow real life conditions.
by Luis I. Garay.
S.B.
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Kim, David Donghyun. "Flexible in-pipe leak detection sensor module design and fabrication." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/101541.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2015.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 83-84).
Recent pipe bursts and explosions have caused not only financial losses but also a threat to public safety. Due to the recent incidents, governments have imposed strict laws with an increase in inspection regulation requirements. Large size networks make manual inspection of an entire complex system almost impossible. The need for autonomous automatic inspection systems is evident. A robust autonomous in-pipe leak detection robot was developed and reported in [1-5]. The developed system is able to accurately detect leaks in both pressurized gas and water pipes. This however was limited to 101.6mm (4in) internal diameter pipes. In practice, fouling of water pipes makes the internal pipe surface irregular. This thesis presents an analysis, design and experimental evaluation of a flexible detection system for pipes with large inner pipe diameter variation (80mm to 120mm). The system performance is evaluated through simulations and experiments. Experimental results show that the flexible sensor can detect leaks in pipes with simulated limescale. In addition, experiments were conducted to evaluate the effects of detector shift from the pipe centerline along with the effective area coverage of the leak by the sensor. The results show robust performance under large variations.
by David Donghyun Kim.
S.M.
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Mittmann, Elizabeth(Elizabeth R. ). "Smart water network management with in-pipe leak detection robots." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/122119.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2019
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 85-87).
In this thesis, I created methods and designs to implement smarter, more autonomous water distribution networks (WDNs) and also improved the robots which will travel within the WDN's pipes to better differentiate pipe leaks from bumps in the pipes. Starting from the unit of the in-pipe leak detection robot, I investigated ways to make its soft leak sensors able to differentiate between pulling (due to leaks) and bending (due to bumps), and showed how a new design of adding fabric to the soft sensor allows the sensors to differentiate bending from pulling. Zooming out to the larger picture I looked at feasible ways these robots could be used throughout a cities' WDN, and created cost analyzes to compare futuristic methods of WDN management with current methods of district metered areas (DMAs). However, going from our current state of minimally instrumented pipes, to pipes with many valves to direct in-pipe inspection robots is a big leap, and thus I also created a method to help evaluate the cost trade-off of valve placement and the optimal spots for adding valves in the case where it was ideal to place valves on only some of the intersections of the WDN..
by Elizabeth Mittmann.
S.M.
S.M. Massachusetts Institute of Technology, Department of Mechanical Engineering
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Moore, Frederick M. "Further development of an in-pipe leak detection sensor's mobility platform." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/83830.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2013.
Cataloged from PDF version of thesis.
Includes bibliographical references (page 68).
Water leakage is a major global problem and smaller sized leaks are difficult to find despite their prevalence in most water distribution systems. Previous attempts to develop a mobility platform for a sensor in use in such a pipe by the MIT Mechatronics lab have been met with less than desirable results and a new design was needed for functionality. A more integrated, streamlined, and powerful mobility platform was developed from the original design specifications and then constructed according to newly developed techniques. This new mobility platform was then evaluated in a series of tests to determine the experimental drag and thrust, values that would determine its functionality, as well as flow characteristics and waterproof functionality. The new platform was found to be waterproof, have a maximum thrust of 3.47 N and drag at the desired speed of 1.815 N. It was also found to move through a pipe at a speed of 0.9667 m/s, despite some stability concerns.
by Frederick M. Moore.
S.B.
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Books on the topic "Pipe system and leak detection"

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AWWA Seminar on Leak Detection and Water Loss Reduction (1986 Minneapolis, Minn.). Proceedings: AWWA Seminar on Leak Detection and Water Loss Reduction [presented at the] Distribution System Symposium, Minneapolis, Minnesota, September 7-10, 1986. Denver, CO: American Water Works Association, 1987.

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S, Rahman, Battelle Memorial Institute, and U.S. Nuclear Regulatory Commission. Office of Nuclear Regulatory Research. Division of Engineering Technology., eds. Probabilistic pipe fracture evaluations for leak-rate-detection applications. Washington, DC: U.S. Nuclear Regulatory Commission, 1995.

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(Editor), Osama Hunaidi, Wing Chu (Editor), Alex Wang (Editor), and Wei Guan (Editor), eds. Leak Detection Methods for Plastic Water Distribution Pipes. Amer Water Works Assn, 2000.

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W, Hunter Gary, and United States. National Aeronautics and Space Administration., eds. A hydrogen leak detection system for aerospace and commercial applications. [Washington, D.C.]: National Aeronautics and Space Administration, 1995.

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V, Carnahan James, and Segan E. G, eds. Effects of leak detection/location on underground heat distribution systems (UHDS) life cycle costs: A probabilistic model. [Champaign, Ill.]: Construction Engineering Research Laboratory, 1991.

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A, Smith Lawrence, ed. Options for leak and break detection and repair of drinking water systems. Columbus, Ohio: Battelle Press, 2000.

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Fields, Keith A., Abraham S. C. Chen, and Anthony N. Tafuri. Options for Leak and Break Detection and Repair of Drinking Water Systems. American Water Works Association, 2000.

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Leak Detection and Water Loss Reduction Sem at Awwa 1986 Distribution System (AWWA seminar proceedings). Amer Water Works Assn, 1987.

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Neal, Hass, and NASA Dryden Flight Research Center., eds. Propellant feed system leak detection: Lessons learned from the Linear Aerospike SR-71 Experiment (LASRE). Edwards, Calif: National Aeronautics and Space Administration, Dryden Flight Research Center, 1999.

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Book chapters on the topic "Pipe system and leak detection"

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Taïeb, Lamjed Hadj, Lazhar Ayed, and Ezzeddine Hadj Taïeb. "Leak Detection in Viscoelastic Pipe by Transient Analysis." In Condition Monitoring of Machinery in Non-Stationary Operations, 69–79. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-28768-8_8.

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Isermann, Rolf. "Fault detection and diagnosis of a centrifugal pump-pipe-system." In Fault-Diagnosis Systems, 391–99. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/3-540-30368-5_21.

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Mishra, Manish Kumar, and Kailash Jha. "Algorithms of Minimal Number of Sensors Placement Using Pressure Sensitivity Analysis for Leak Detection in Pipe Network." In Water Management and Water Governance, 393–412. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-58051-3_26.

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Zhang, Lingjuan, Yun Wang, and Jianqiang Ren. "Design of a Novel Leak Detection System for Water Network in Electronic Communication." In Advances in Mechanical and Electronic Engineering, 169–74. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-31528-2_28.

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"Method H: Acoustic correlation using accelerometers on large diameter pipe or non-metallic pipes." In Leak Detection, 47–48. IWA Publishing, 2020. http://dx.doi.org/10.2166/9781789060850_0047.

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"Pipeline Leak Detection System." In Pipeline System Automation and Control, 257–324. ASME Press, 2007. http://dx.doi.org/10.1115/1.802639.ch7.

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Henrie, Morgan, Philip Carpenter, and R. Edward Nicholas. "Leak Detection System Infrastructure." In Pipeline Leak Detection Handbook, 171–91. Elsevier, 2016. http://dx.doi.org/10.1016/b978-0-12-802240-5.00008-x.

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Henrie, Morgan, Philip Carpenter, and R. Edward Nicholas. "External and Intermittent Leak Detection System Types." In Pipeline Leak Detection Handbook, 137–69. Elsevier, 2016. http://dx.doi.org/10.1016/b978-0-12-802240-5.00007-8.

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Becht, Charles. "Leak Testing." In Process Piping: The Complete Guide to ASME B31.3, Fourth Edition, 143–47. ASME, 2021. http://dx.doi.org/10.1115/1.883792_ch14.

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While the exercise of pressurizing a piping system and checking for leaks is sometimes called pressure testing, the Code refers to it as leak testing. The main purpose of the test is to demonstrate that the piping can confine fluid without leaking. When the piping is leak tested at pressures above the design pressure, the test also demonstrates that the piping is strong enough to withstand the pressure. For large bore piping where the pipe wall thickness is close to the minimum required by the Code, being strong enough to withstand the pressure is an important test. For small bore piping that typically has a significant amount of extra pipe wall thickness, being strong enough is not in question. Making sure that the piping is leak free is important for all piping systems.
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Rakoto, L., M. Kinnaert, M. Strengnart, and N. Raimarckers. "Leak detection in the lubrication system of an aircraft turbine engine." In Advances in Safety, Reliability and Risk Management, 566–71. CRC Press, 2011. http://dx.doi.org/10.1201/b11433-79.

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Conference papers on the topic "Pipe system and leak detection"

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Dvajasvie, G., Banu PK Farisha, Sachin N. Babu, K. P. Saheen, and Nikhil C. Binoy. "Leak Detection in Water-Distribution Pipe System." In 2018 Second International Conference on Intelligent Computing and Control Systems (ICICCS). IEEE, 2018. http://dx.doi.org/10.1109/iccons.2018.8663193.

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Chatzigeorgiou, Dimitris M., Kamal Youcef-Toumi, Atia E. Khalifa, and Rached Ben-Mansour. "Analysis and Design of an In-Pipe System for Water Leak Detection." In ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/detc2011-48395.

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In most cases the deleterious effects associated with the occurrence of leaks may present serious problems and therefore, leaks must be quickly detected, located and repaired. The problem of leakage becomes even more serious when it is concerned with the vital supply of fresh water to the community. In addition to waste of resources, contaminants may infiltrate into the water supply. The possibility of environmental health disasters due to delay in detection of water pipeline leaks has spurred research into the development of methods for pipeline leak and contamination detection. Leaking in water networks has been a very significant problem worldwide, especially in developing countries, where water is sparse. Many different techniques have been developed to detect leaks, either from the inside or from the outside of the pipe; each one of them with their advantages, complexities but also limitations. To overcome those limitations we focus our work on the development of an in-pipe-floating sensor. The present paper discusses the design considerations of a novel autonomous system for in-pipe water leak detection. The system is carefully designed to be minimally invasive to the flow within the pipe and thus not to affect the delicate leak signal. One of its characteristics is the controllable motion inside the pipe. The system is capable of pinpointing leaks in pipes while operating in real network conditions, i.e. pressurized pipes and high water flow rates, which are major challenges.
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Borda, Carlos, Dana DuToit, Harry Duncan, and Marc Niklès. "External Pipeline Leak Detection Based on Fiber Optic Sensing for the Kinosis 12″–16″ and 16″–20″ Pipe-in-Pipe System." In 2014 10th International Pipeline Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/ipc2014-33375.

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The concern of the pipeline industry and general population for a safe and green environment is higher than ever. This highlights the need for efficient leak detection to prevent environmental catastrophes and operational disruption. Therefore, accurate techniques to detect and locate very small leaks that could develop into larger leaks are a valuable asset for the construction of key pipelines. External pipeline leak detection systems based on distributed fiber optic sensing emerge as the most appropriate solution for automatic detection and localization of very small leaks. In the case of the Kinosis pipeline system, two 11km Electrically Heat Traced Pipe-In-Pipe (EHTPIP) pipelines have been built between the Nexen Long lake upgrader and Nexen Kinosis SAGD facilities. The fiber optic sensing cable is directly in contact with the EHTPIP external surface. These pipelines carry Produced Emulsion and Boiler Feed Water at temperatures as high as 120°C and 150°C respectively. The fiber optic distributed sensing system provides temperature feedback information to the operator, not only in operation and in case of a leak but also when the Electrical Heat Trace system is turned on; in this case, the monitoring system can detect and locate overheating problems and/or signs of heating failures. In the case of a leak, the outer temperature of the pipeline will increase; this will automatically be detected and monitored by the DITEST temperature monitoring system and will trigger an alarm to the Nexen LONG LAKE upgrader SCADA system for that specific location. Furthermore, the combination of fiber optic distributed monitoring with the PIP technology enables to detect and locate a leak in the inner pipeline at a very early stage, therefore avoiding any environmental damage (the leak is still contained by the outer PIP tube) and giving time to the pipeline operator to plan a sectional replacement.
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Khalifa, Atia E., Dimitris M. Chatzigeorgiou, Kamal Youcef-Toumi, Yehia A. Khulief, and Rached Ben-Mansour. "Quantifying Acoustic and Pressure Sensing for In-Pipe Leak Detection." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-40056.

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Experiments were carried out to study the effectiveness of using inside-pipe measurements for leak detection in plastic pipes. Acoustic and pressure signals due to simulated leaks, opened to air, are measured and studied for designing a detection system to be deployed inside water networks of 100 mm (4 inch) pipe size. Results showed that leaks as small as 2 l/min can be detected using both hydrophone and dynamic pressure transducer under low pipe flow rates. The ratio between pipe flow rate and leak flow rate seems to be more important than the absolute value of leak flow. Increasing this ratio resulted in diminishing and low frequency leak signals. Sensor location and directionality, with respect to the leak, are important in acquiring clean signal.
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Chatzigeorgiou, Dimitris M., Atia E. Khalifa, Kamal Youcef-Toumi, and Rached Ben-Mansour. "An In-Pipe Leak Detection Sensor: Sensing Capabilities and Evaluation." In ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/detc2011-48411.

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In most cases the deleterious effects associated with the occurrence of leak may present serious problems and therefore leaks must be quickly detected, located and repaired. The problem of leakage becomes even more serious when it is concerned with the vital supply of fresh water to the community. In addition to waste of resources, contaminants may infiltrate into the water supply. The possibility of environmental health disasters due to delay in detection of water pipeline leaks has spurred research into the development of methods for pipeline leak and contamination detection. Leaks in water pipes create acoustic emissions, which can be sensed to identify and localize leaks. Leak noise correlators and listening devices have been reported in the literature as successful approaches to leak detection but they have practical limitations in terms of cost, sensitivity, reliability and scalability. To overcome those limitations the development of an in-pipe traveling leak detection system is proposed. The development of such a system requires a clear understanding of acoustic signals generated from leaks and the study of the variation of those signals with different pipe loading conditions, leak sizes and surrounding media. This paper discusses those signals and evaluates the merits of an in-pipe-floating sensor.
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Chatzigeorgiou, Dimitris M., You Wu, Kamal Youcef-Toumi, and Rached Ben-Mansour. "Reliable Sensing of Leaks in Pipelines." In ASME 2013 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/dscc2013-4009.

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Leakage is the major factor for unaccounted losses in every pipe network around the world (oil, gas or water). In most cases the deleterious effects associated with the occurrence of leaks may present serious economical and health problems. Therefore, leaks must be quickly detected, located and repaired. Unfortunately, most state of the art leak detection systems have limited applicability, are neither reliable nor robust, while others depend on user experience. In this work we present a new in-pipe leak detection system, PipeGuard. PipeGuard performs autonomous leak detection in pipes and, thus, eliminates the need for user experience. This paper focuses on the detection module and its main characteristics. Detection in based on the presence of a pressure gradient in the neighborhood of the leak. Moreover, the proposed detector can sense leaks at any angle around the circumference of the pipe with only two sensors. We have validated the concepts by building a prototype and evaluated its performance under real conditions in an experimental laboratory setup.
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Wang, Likun, Jian Li, Ke Peng, Shijiu Jin, and Zhuang Li. "Petroleum Pipe Leakage Detection and Location Embeded in SCADA." In 2004 International Pipeline Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ipc2004-0717.

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With the increase of the age of the transport oil pipeline and the man-made destruction to pipeline, leaks are often found. The system for pipeline leakage detection and location must be established to find leakage and locate the leak positions to reduce serious environmental pollution and economic loss caused by leakage. The negative pressure wave method is an effective way to locate the leak position, because over 98 percent pipe leakage in China is paroxysmal. There is a SCADA (supervisory control and data acquisition) system to monitor operation for long transport petroleum pipe, but the function of leakage detection and location is not included in existing SCADA system in China. This paper used Dynamic Data Exchange (DDE) method to obtain pipe operation parameters such as pressure, flow rate, temperature, bump current, valve position and so on from the SCADA system. That takes full advantage of the abundant data collection function of the SCADA system to provide data for leakage detection and location. The wavelet packet analysis-based fault diagnosis method can directly use the change of parameters such as energy of frequency component to detect faults without system model. In the paper, a wavelet packet analysis-based characteristic extraction method is used to extract the characteristic information of leak pressure signals. The eigenvector indexes along with the parameters obtained from the SCADA system can be used to avoid false alarms. Wavelet analysis was used to locate leak positions accurately in this paper. Such a wavelet analysis-based leakage detection and location scheme embedded in the SCADA system has been successfully applied to a pipeline in PetroChina. Practical run demonstrated its well effect.
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Beushausen, Rainer, Stefan Tornow, Harald Borchers, Keefe Murphy, and Jun Zhang. "Transient Leak Detection in Crude Oil Pipelines." In 2004 International Pipeline Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ipc2004-0766.

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This paper addresses the specific issues of transient leak detection in crude oil pipelines. When a leak occurs immediately after pumps are switched on or off, the pressure wave generated by the transients dominates the pressure wave that results from the leak. Traditional methods have failed to detect such leaks. Over the years, NWO has developed and implemented various leak detection systems both in-house and by commercial vendors. These systems work effectively under steady-state conditions but they are not able to detect leaks during transients. As it is likely for a leak to develop during transients, NWO has decided to have the ATMOS Pipe statistical leak detection system installed on their pipelines. This paper describes the application of this statistical system to two crude oil pipeline systems. After addressing the main difficulties of transient leaks, the field results will be presented for both steady-state and transient conditions.
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Garcia-Hernandez, Augusto, and Shane Siebenaler. "Acoustic Leak Detection Technology Assessment." In 2012 9th International Pipeline Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/ipc2012-90146.

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Leak detection systems are a vital part of a pipeline integrity management program. For liquid hydrocarbon pipelines, these leak detection systems can take the form of measuring conditions inside the pipeline (internal detection) or by use of hardware installed outside of the pipe (external detection). One internally-based technology is acoustic leak detection, sometimes known as rarefaction-wave monitoring. This technology is based on detecting transient pressure waves that are generated when a sudden leak occurs. Acoustic pressure waves travel in the pipeline at the speed of sound of the fluid that is being transported and can be detected by dynamic pressure sensors. Various filters and algorithms can be used to identify this disturbance and distinguish it from other pressure events on the pipeline. This architecture can even be used for noise and for signal pattern recognition to allow for automatic alarming of potential leak events. Each manufacturer of such technology applies unique algorithms or processing methods to capture and analyze the pressure signals that are used to later predict leaks and their locations. This paper presents a comprehensive review of the technical basis and methodology employed by acoustic leak detection systems in order to further understand their capabilities and limitations. This work included a vast amount of hydraulic modeling aimed at understanding the physics of wave propagation caused by leak events. Diverse parameters, such as initial pressure wave amplitude, signal attenuation, flow and pressure dependence, speed of sound effects, and sensor locations were evaluated. This modeling was conducted for a variety of simulated fluids. A proportional relationship between leak rate and the initial pressure disturbance caused by a leak was obtained. This linear trend can be used in combination with an attenuation model to calculate sensor location limitations. The work determined that the uncertainty in the speed of sound for a pipeline fluid segment significantly impacts the error bands of leak location. The modeling was used to generate correlations for signal attenuation over distance as a function of pipeline conditions.
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Puust, Raido, Zoran Kapelan, Dragan Savic, and Tiit Koppel. "Probabilistic Leak Detection in Pipe Networks Using the SCEM-UA Algorithm." In Eighth Annual Water Distribution Systems Analysis Symposium (WDSA). Reston, VA: American Society of Civil Engineers, 2008. http://dx.doi.org/10.1061/40941(247)15.

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Reports on the topic "Pipe system and leak detection"

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Rahman, S., N. Ghadiali, D. Paul, and G. Wilkowski. Probabilistic pipe fracture evaluations for leak-rate-detection applications. Office of Scientific and Technical Information (OSTI), April 1995. http://dx.doi.org/10.2172/50938.

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Wainner, Richard T., Mickey B. Frish, B. David Green, Matthew C. Laderer, Mark G. Allen, and Joseph R. Morency. High Altitude Aerial Natural Gas Leak Detection System. Office of Scientific and Technical Information (OSTI), December 2006. http://dx.doi.org/10.2172/921001.

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Dawn Lenz, Raymond T. Lines, Darryl Murdock, Jeffrey Owen, Steven Stearns, and Michael Stoogenke. Flight Testing of an Advanced Airborne Natural Gas Leak Detection System. Office of Scientific and Technical Information (OSTI), October 2005. http://dx.doi.org/10.2172/861942.

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Bill Spiegel. Technical progress reports [Liquid leak detection system. September 1, 1998, through June 30, 1999]. Office of Scientific and Technical Information (OSTI), December 1998. http://dx.doi.org/10.2172/763036.

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Greene, D. A., J. W. Malovrh, D. C. Gaubatz, and C. A. Calkins. GAAD system demonstration of rapid acoustic detection of simulated intermediate water leak in prototype steam generator. Office of Scientific and Technical Information (OSTI), March 1985. http://dx.doi.org/10.2172/711955.

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Chien, Hual-Te, Thomas W. Elmer, William P. Lawrence, and Edward O'Hare. Development of Diffusion-type Hydrogen Meters for Steam Generator Leak Detection System of Sodium-cooled Fast Reactors. Office of Scientific and Technical Information (OSTI), September 2019. http://dx.doi.org/10.2172/1598331.

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Douglas, D. G., R. F. Wise, J. W. Starr, and J. W. Maresca, Jr. Leak testing plan for the Oak Ridge National Laboratory liquid low- level waste system (active tanks). Volume 1, Regulatory background and plan approach; Volume 2, Methods, protocols, and schedules; Volume 3, Evaluation of the ORNL/LT-823DP differential pressure leak detection method. Office of Scientific and Technical Information (OSTI), June 1992. http://dx.doi.org/10.2172/7296416.

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Clausen, Jay, D. Moore, L. Cain, and K. Malinowski. VI preferential pathways : rule or exception. Engineer Research and Development Center (U.S.), July 2021. http://dx.doi.org/10.21079/11681/41305.

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Trichloroethylene (TCE) releases from leaks and spills next to a large government building occurred over several decades with the most recent event occurring 20 years ago. In response to a perceived conventional vapor intrusion (VI) issue a sub-slab depressurization system (SSDS) was installed 6 years ago. The SSDS is operating within design limits and has achieved building TCE vapor concentration reductions. However, subsequent periodic TCE vapor spikes based on daily HAPSITE™ measurements indicate additional source(s). Two rounds of smoke tests conducted in 2017 and 2018 involved introduction of smoke into a sanitary sewer and storm drain manholes located on effluent lines coming from the building until smoke was observed exiting system vents on the roof. Smoke testing revealed many leaks in both the storm sewer and sanitary sewer systems within the building. Sleuthing of the VI source term using a portable HAPSITE™ indicate elevated vapor TCE levels correspond with observed smoke emanation from utility lines. In some instances, smoke odors were perceived but no leak or suspect pipe was identified suggesting the odor originates from an unidentified pipe located behind or enclosed in a wall. Sleuthing activities also found building roof materials explain some of the elevated TCE levels on the 2nd floor. A relationship was found between TCE concentrations in the roof truss area, plenum space above 2nd floor offices, and breathing zone of 2nd floor offices. Installation of an external blower in the roof truss space has greatly reduced TCE levels in the plenum and office spaces. Preferential VI pathways and unexpected source terms may be overlooked mechanisms as compared to conventional VI.
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UST(Underground Storage Tanks) Leak Detection System. Purdue University, 2007. http://dx.doi.org/10.5703/1288284315922.

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SmartBall™: Free Swimming Leak Detection System. Purdue University, 2008. http://dx.doi.org/10.5703/1288284315853.

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