Tenders Are Invited For Drilling And Exploration Work – Production Of Geothermal Probes For A Cold Local Hea ... in Germany

Work Detail

Drilling And Exploration Work – Production Of Geothermal Probes For A Cold Local Heating Network. 84 Probes Are To Be Installed To Supply The New Tetendorfer Straße Development Area. The Plan Is To Install Double U-Probes With Two Separate Circuits Made Of Pe 100 Da 32 Sdr 11. The Flow And Return Are Reduced To A Pe Da 40 Sdr 11 Line At The Upper End Of The Probe Using A Y-Piece. Sinking Is Done Through Vertical Drilling. In Loose Rock, Auxiliary Piping Is Sometimes Required To Support The Borehole. The Geothermal Probe Is Then Inserted Into The Bore Using A Pulling Weight. The Drilling Is Filled Using The Contractor Method From Bottom To Top Of The Ground (Gok) With A Thermally Improved Bentonite Cement Suspension (Thermal Conductivity At Least 2 W/(M*K). The Drillings Are To Be Carried Out With Two Drilling Rigs At The Same Time. Proof Of Suitability Must Be Provided In Accordance With Dvgw Worksheet W 120-2 For Group G200 With The Submission Of An Offer. Analogous To The Geothermal Probes, The Temperature Measuring Points Da40 Single-U Probes Are Installed. The Filling Is Carried Out In The Same Way As The Geothermal Probes. A Pressure And Flow Measurement Must Also Be Carried Out For These Probes After The Work Has Been Completed. The Horizontal Connection Is Not The Subject Of This Tender!

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