| Canada | - Referee activities during an international operator training in Canada
- Survey of an existing biogas plant in Canada
- Engineering of a safety-related verification and technical estimate of an existing biogas plant in Canada
- Complete design of a big co-fermentation biogas plant: design, permission, cost assessment, call for tender, supervision, start-up in Canada
- Design of a biogas plant for the digestion of biowaste in Canada: layout, design, cost assessment, call for tender, supervision and start-up
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| France | - Operator service (kf-operator) for an anaerob digestion plant in France
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| Germany | - Performance of safety-related verification and technical estimate of an existing a renewable raw input biogas plant in Germany
- Project engineering of a technical evaluation of a estimate of the due-diligence of an existing biogas plant in Germany, using renewable resources
- Performance of a safety-related verification and technical estimate of an existing co-fermentation biogas plant in Germany
- Preparation of an advisory certificate before ending of warranty period of an existing biogas plant in Germany
- Procedure of a preliminary planning and permission of a renewable raw materials biogas plant in Germany
- Preparation of a feasibility study to evaluate the fermentation of biowaste in Germany
- Preliminary planning and first layout of a biogas plant in Germany
- Performance of technical assessment according to a due-diligence examination of an existing biogas plant in Germany
- Engineering of a safety-related verification and technical estimate of an existing biogas plant in Germany
- Study on a combined bioethanolbiogas plant in Germany
- Elaboration of a safety-related verification and technical estimate of an existing biogas plant in Germany
- Design of a combined bio-ethanol plant in Germany
- Performance of a survey about marc fermentation in Germany
- Participation of one network research of the "Fachagentur für nachwachsende Rohstoffe:" Monofermentation von Maissilagen aus Standorten unterschiedlicher Bodenbeschaffenheit "FKZ 22014308"
- Implementation of preliminary design of a co-fermentation biogas plant in Germany
- Project engineering of technical assessment of the due-diligence examination of an existing plant in Germany
- Complete design of a biogas plant using renewable raw materials: conception, permission, cost assessment, call for tenders, supervision according to the order of the general contractor
- Performance of technical assessment according to a due-diligence examination of an existing biogas plant in Germany
- Survey preparation for dry fermentation in Germany
- Preliminary planning of the extension of an existing biogas plant for the digestion of biowaste in Germany
- Performance of technical assessment according to a due-diligence examination of two existing biogas plants in Germany
- Performance of a safety-related verification and technical estimate of an existing biogas plant in Germany
- Engineering of a safety-related verification and technical estimate of an existing biogas plant in Germany
- Preliminary planning of extension of an existing plant in Germany
- Preliminary planning of a biogas plant for the digestion of waste in Germany
- Procedure of the perliminary planning of a renewable raw materials biogas plant in Germany
- Complete engineering of a biogas plant with renewable raw input in Germany: design, permission, cost assessment, call for tender, supervision and start-up
- Performance of several quality measures in the field of biogas educational establishments in Germany
- Performance of a survey about marc fermentation in Germany
- Elaboration of a safety-related verification and technical estimate of an existing biogas plant in Germany using renewable raw materials
- Extension about one silo in a consisting biogas plant in Germany
- Preparation of a survey relating to the evaluation of solid input technique and the improvement of a biogas in Plant using renewable resources input
- Performance of a safety-related verification and technical estimate of an existing co-fermentation biogas plant in Germany
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| Italy | - Realization of a preliminary design of a biogas plant using renewable raw materials in Italy
- Complete planning of a biogas plant for the digestion of waste in Italy: Design, permission, cost assessment, call for tenders, supervision and start-up
- Performance of preliminary planning of a biogas plant capatilizing renewable raw materials in Italy
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| Poland | - Implementation of a preliminary planning and permission design of a biogas plant in Poland
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| Spain | - Complete design of a biogas plant for the digestion of waste in Spain: Design, permission, cost assessment call for tender, supervision and start-up
- Complete design of a waste fermentation biogas plant in Spain: conception, permission, cost assessment, call for tender, supervision and start-up
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| USA | - Performance of preliminary design of a biogas plant for the digestion of waste in USA
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