Laying of the decontaminable floor covering in front of emplacement chamber 7 started

Staff of the Asse-GmbH lay decontaminable floor plates in front of emplacement chamber 7 to prepare drilling works

This starts the setting-up of the devices. Only after the floor covering has been laid completely and has been approved by experts, can the actual setting-up begin. Now the measurement containers, the ventilation and filter technology and the tarpaulin-like separation can be built up. Later on the drilling area is to be separated from the residual mine through the radiation protection area.

Via a fan the air is then to be extracted and filtered from the work area. Extracting the air from the radiation protection area causes slightly low pressure in the entire drilling area. This is an additional safety measure that prevents possibly contaminated gases and dusts being released into the mine air. Before the floor covering could be laid, level foundations needed to be produced and first electrical installations to be concluded.

Testing of the drilling device successfully concluded

The operational trial (cold trial) has already concluded. In the course of this trial that took place between September 2010 and June 2011 the technical equipment and the protective gear were being tested and optimised for utilisation. Furthermore geophysical measuring methods were tested which were to provide information about cavities and the state of the rock. Once the operational trial (cold trial) on the 800-m level had concluded successfully, the drilling devices, the preventers and the container for the debris were set up. The components are currently being maintained in the underground workshops and prepared for their use in the trial phase.