Journal ArticleDOI
A survey on gas leak detection and localization techniques
Pal-Stefan Murvay,Ioan Silea +1 more
TLDR
This paper identifies the state-of-the-art in leak detection and localization methods and evaluates the capabilities of these techniques in order to identify the advantages and disadvantages of using each leak detection solution.Abstract:
Gas leaks can cause major incidents resulting in both human injuries and financial losses. To avoid such situations, a considerable amount of effort has been devoted to the development of reliable techniques for detecting gas leakage. As knowing about the existence of a leak is not always enough to launch a corrective action, some of the leak detection techniques were designed to allow the possibility of locating the leak. The main purpose of this paper is to identify the state-of-the-art in leak detection and localization methods. Additionally we evaluate the capabilities of these techniques in order to identify the advantages and disadvantages of using each leak detection solution.read more
Citations
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Journal ArticleDOI
Recent Advances in Pipeline Monitoring and Oil Leakage Detection Technologies: Principles and Approaches
TL;DR: This paper discusses pipeline leakage detection technologies and summarises the state-of-the-art achievements, and compares performance analysis is performed to provide a guide in determining which leak detection method is appropriate for particular operating settings.
Journal ArticleDOI
Pipeline corrosion and leakage monitoring based on the distributed optical fiber sensing technology
TL;DR: In this paper, a new application of optical frequency domain reflectometry (OFDR) technique is introduced to monitor both corrosion and leakage, and simulation tests are conducted to verify this method, where several optical fiber sensors were bonded to the pipe surface with the same interval, forming a sensor array.
Journal ArticleDOI
Integrated leakage detection and localization model for gas pipelines based on the acoustic wave method
TL;DR: Wang et al. as mentioned in this paper proposed a modified acoustic velocity and location formula, and an improved wavelet double-threshold de-noising optimization method was also proposed to address the original acoustic wave signal collected by the test platform.
Journal ArticleDOI
Natural gas pipeline small leakage feature extraction and recognition based on LMD envelope spectrum entropy and SVM
TL;DR: A small leak feature extraction and recognition method based on local mean decomposition (LMD) envelope spectrum entropy and support vector machine (SVM) that can effectively identify different leak categories.
Journal ArticleDOI
Graphene-based wearable temperature sensor and infrared photodetector on a flexible polyimide substrate
TL;DR: In this article, a wearable temperature sensor and IR photodetector on a flexible polyimide (PI) substrate is presented, where solar exfoliated reduced graphene oxide (SrGO) and graphene flakes are used as sensing materials for developing the sensors on a PI substrate.
References
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Journal ArticleDOI
Leak Detection in Pipes by Frequency Response Method
TL;DR: In this paper, a steady-oscillatory flow, produced by the periodic opening and closing of a valve, is analyzed in the frequency domain by using the transfer matrix method, and a frequency response diagram at the valve is developed.
Journal ArticleDOI
Leak detection methods for pipelines
L. Billman,Rolf Isermann +1 more
TL;DR: For the early detection and localization of small leaks in pipelines a nonlinear adaptive state observer and a special correlation technique were developed, based on pressure and flow measurements at the pipeline inlet and outlet.
Patent
Method and system to locate leaks in subsurface containment structures using tracer gases
TL;DR: In this article, an inverse modeling technique and a field measurement system are integrated to quantify the location and size of any leaks in a barrier. Butt et al. used inexpensive and non-hazardous gaseous tracers injected inside the contained volume of a barrier to quantitatively quantify the locations and sizes of leaks in the barrier.
Journal ArticleDOI
Distributed fibre optic sensors for pipeline protection
Femi Tanimola,David John Hill +1 more
TL;DR: The application of fibre optic leak detection and third party intruder detection methods have been successfully demonstrated to provide non-intrusive digital pipeline monitoring by acting as an early warning system, allowing operators to act swiftly in the event of a pipeline leakage or intrusion into a plant area or leakage into the environment.
BookDOI
Solid state gas sensing
TL;DR: In this article, the authors describe a micro-fabrication of gas sensors, including a Capacitive-Type Relative Humidity Sensor with Hydrophobic Polymer Films and a FET Gas-Sensing Mechanism.