The paper present the research carried out as part of construction a new monitoring system using the AE method, in the aspect of the adaptation to the requirements of the storage tanks of the Polish Minister of Economy of 21.11. 2005, and to the provisions and conditions of maintenance. Leaks are structural failures especially in old construction of the single-bottom aboveground storage tanks that are mainly caused by corrosion or by weld defects. These damages from the degradation of material and structure are the subject of investigations carried out within the framework of the Research and Development Project of The Polish National Centre for Research and Development entitled "Design, implementation and use of a control system for monitoring activity and leakage of corrosive processes by acoustic emission (AE) of storage tanks for liquid media". Researches of corrosion processes and leakage with use of AE were made under laboratory conditions, as well as under operating conditions of the storage tank. The main aim of the tests was to record the reference data, with correspondingly wide range of the frequency spectrum for the various stages of corrosion processes and different kinds of leaks. The long-time AE background monitoring tests on storage tanks in the different monitored conditions and additionally tests with the leaks simulator were performed. The environmental conditions were monitored by the weather station and collected data were synchronized with the AE measurement data - weather data were included to the analysis and visualisation of AE data stream. Data collected during all measurements are used in frequency and AE parameters analysis in order to develop the conditions and criteria of conducting AE monitoring on operating storage tanks regarding condition of the tank bottom. The measurement data are undergo pattern recognition analysis to separate the AE signals due to corrosion and leaks from background noise for different conditions measurements. The collected database is also the basis of building the classifier, which aimed the identification and reporting of failure events (e.g. leakage, corrosion) during the on-line AE monitoring. The idea of the new AE monitoring system of aboveground storage tanks will be presented.


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    Title :

    The acoustic emission monitoring system of aboveground storage tanks


    Contributors:


    Publication date :

    2014


    Size :

    8 Seiten, Bilder, 8 Quellen



    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English




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