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Concept for investigating mechanical and thermal impacts on distributed subsurface gas monitoring
(2016)
A multifunctional sensor in line shape was developed and introduced in previous work for measuring of gas concentrations, temperature change, and strain. A current field study focuses on a spatially distributed monitoring of subsurface CO 2 gas storage sites in near real time.
Mechanical impacts, e.g., caused by construction work, denudation, and seismic activity, can affect the integrity of underground gas storage sites. Thermal or moisture impacts, e.g., caused by weather conditions, can influence the gas Distribution behavior. In this paper, we briefly describe the setup of a CO 2 injection soil test field. This setup contains actuating elements for the investigation of mechanical and thermal impacts on distributed subsurface gas monitoring. A concept is given for evaluating these impacts and first experimental results are presented.
Strain and acceleration measurement during high dynamic drop tests, e.g., of containments for dangerous goods is performed using high speed multichannel measuring systems. So far established and operated systems need a cable connection of every strain gauge and acceleration sensor with the measuring device, often counting up to a number of more than 100 cables, corresponding to the number of applied sensors. The result is a massive cable harness consisting of all single cables, which is difficult to handle and causes a number of practical problems. An innovative approach is proposed by using a single cable measuring system, consisting of measuring modules with data bus connection and local data acquisition. Promising results were presented in a previous study. This paper follows up with additional results from full-scale testing of a further enhanced single cable system for the application in drop tests.
Die Empfehlungen dieses Handbuchs über Prüfungen und Kriterien ergänzen die "Empfehlungen für die Beförderung gefährlicher Güter" und die angefügten Modellvorschriften. Sie sind das Ergebnis der Beschlüsse des UN-Sachverständigenausschusses "Beförderung gefährlicher Güter", die auf der dreizehnten (1984), vierzehnten (1986), fünfzehnten (1988), sechszehnten (1990), siebzehnten (1992), achtzehnten (1994), neunzehnten (1996) und zwanzigsten (1998) Sitzung gefasst wurden. Diese 3. überarbeitete Ausgabe enthält die vom Ausschuss auf dessen neunzehnter Sitzung (ST/SG/AC.10/23/Add. 1, Anhang 2) und zwanzigster Sitzung (ST/SG/AC.10/1998/14 und ST/SG/AC.10/25/Add. 1, Teil 3) angenommenen Ergänzungen der vorangegangenen Ausgabe.