Fachartikel
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The Innova Rig 418 Deep Drilling Rig – A Successful Model for Producing Geothermal Wells?
The aim of this article is to provide an overview of the main stations of the Innova Rig Terra Invader 418 drilling rig from Herrenknecht Vertical GmbH, Schwanau/Germany, and its positioning on the national and international geothermal market since it was launched. The main features, advantages and benefits of the…
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The Current Legal Framework for Geothermal Drilling
Geothermy is a raw materials production process and therefore it has a close association with mining law, unless the activity in question is strictly property related. However, even in this latter case mining regulations will take effect if the drilling extends to a depth of more than 100 m. A…
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Acceptance of Deep Geothermal Energy – Communication as Crucial Factor
Energy from deep and near-surface geothermal energy sources can make a significant contribution to the energy transition in Germany. In contrast to solar and wind energy, however, geothermal energy as a renewable energy source has yet to stake out a significant position in the general public’s awareness. Geothermal projects often…
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Opinion Leaders in the Digital Age – Social Network Analysis for Renewable Energies on Twitter
Evaluating opinions, sentiments and relationships within groups become increasingly easy due to wide availability of data on social media platforms. This article discusses aforementioned aspects for a Twitter network consisting of 37,760 German tweets related to renewable energies which were collected for the year 2019. Besides identifying the most frequent…
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Safe and Stable
Silos can be found in almost all companies in the building materials industry. They are used for the stocking of raw materials and intermediate as well as end products and as dosers or loading silos. Professional maintenance must be performed regularly to ensure their safe operation.  Author/Autor: Dipl.-Ing. Martin Böttcher,…
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Progress for Safety and Health at Work
In May 2020, the German Bundestag passed the 7th Amending Act to the German Welfare Code, Book IV (Sozialgesetzbuch IV; SGB IV). The Act also contains amendments to the Social Welfare Code (SGB) Book VII that incorporate further developments into the law regarding occupational diseases. Professional associations and accident insurance…
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The Mobile Winder SBN FH-55 and the Development of the SBN FH Series
Top priority of occupational safety is precautionary measures and the avoidance of accidents. But fast, innovative and, above all, well-prepared rescue measures are just as essential in mine rescue. The rescue concept for each shaft provides an auxiliary hoisting for men rescue in case of emergency. Mines with shafts located…
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Rehabilitation of Shafts – Current Examples of Executed Solutions on Salt and Potash Mines
Due to the shaft itself and the use of the shaft specific conditions arise for the rehabilitation of old shafts. The shaft construction companies have to face these circumstances again and again when planning and carrying out the work. Almost always the influences of water and/or rock pressure determine the…
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Reconstruction and Qualification Work at Konrad 1 Shaft
The Federal Society for Final Storage (BGE) based in Peine/Germany is commissioned to convert the former Konrad iron ore mine into a repository for low to medium level radioactive waste. The following report deals with the reconstruction and renovation of Konrad 1 shaft including three shaft stations at 3rd, 4th and…
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Flame Resistant Hydraulic Fluids – Requirements and Test Methods
In many areas where hydraulic fluids are used, it is important to minimize the fire hazard that can be caused by hydraulic fluids. Whether in steelworks and power stations or in machine tools or underground mining, it may be necessary to use hydraulic fluids with improved fire engineering properties, so-called…
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