Recently, the vacuum technology has gained a significant relevance in many areas of basic research and applied science. Low-pressure environment of various quality is in common use in the top technology industrial applications. In the most cases, the leaks are the most common sources of deterioration in quality of vacuum. Therefore, the leak detection and consequential leak localization become ...

Leak detection systems are a fundamental part of the management system associated with any long distance pipeline. Such systems are necessary to avoid or reduce environmental and economical losses in case a leak develops in the pipeline. There are several solutions, with different efficiency and cost-effectiveness, for this problem. One of the most appealing is the use of software based leak de...

marxism after marx pdf class="text">Has led to the development of a number of debugging tools to detect unreachable memory. Create a book Download as PDF Printable version.Memory leak detection using Electric fence and Valgrind. An operating system that does not release the memory consumed by the application when the.Memory leak is a major resource issue which could lead to many system. 2 Cal E...

The generation of leak along the pipeline carrying crude oils and liquid fuels results enormous financial loss to the industry and also affects the public health. Hence, the leak detection and localization problem has always been a major concern for the companies. In spite of the various techniques developed, accuracy and time involved in the prediction is still a matter of concern. In this pap...

Leak detection and location play an important role in the management of a pipeline system. Some model-based methods, such as those based on the extended Kalman filter (EKF) or based on the strong tracking filter (STF), have been presented to solve this problem. But these methods need the nonlinear pipeline model to be linearized. Unfortunately, linearized transformations are only reliable if er...

Pressurized pipe networks used for fresh-water distribution can take advantage of recent advances in sensing technologies and data-interpretation to evaluate their performance. In this paper, a leak-detection and a sensor placement methodology are proposed based on leak-scenario falsification. The approach includes modeling and measurement uncertainties during the leak detection process. The pe...

We design a leak detection system consisting of an adaptive Luenbergertype observer based on a set of two coupled one dimensional first order nonlinear hyperbolic partial differential equations governing the flow dynamics. It is assumed that measurements are only available at the inlet and outlet of the pipe, and output injection is applied in the form of boundary conditions. Heuristic update l...

A model-based least-squares algorithm with a time-varying forgetting factor is developed for leak detection in boiler steam-water systems. The algorithm has been tested using real industrial data from Syncrude Canada, and has proven to be effective in detection of boiler tube or steam leaks; proper implementation of the algorithm would lead to early leak warning, which is important in maintaini...