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The MECSEKÉRC Ltd. takes part as main contractor in the research program aiming at the final disposal of the low- and intermediate level radioactive wastes (L/ILW) as the designer of the licensing documentation and the working drawings, and in the implementation of the underground repository in Bátaapáti from 2004. The underground excavation has been commenced with the construction of a twin inclined access shaft; the length is 1700 m each. In 2011 has been completed the construction of the underground tunnel system (total length of the drifts: 5,5 km; excavated rock mass: 188 kt) and the first and second from the disposal vaults (the cross section of them is about 100 m2) as the final host of the L/ILW-s of the Paks Nuclear Power Plant. The working drawings of access tunnels and disposal vaults have been completed by the consideration of rules and requirements origin from the special features and function of the facility. The available information (geological, tectonic, geotechnical, hydrogeological) gained from the that time performed exploration have been applied at the designing as well. For the tunnelling has been used a drill and blast technology with rock bolt and shotcret support system, and up to date, big capacity diesel engine, rubber tyred machinery for loading and transport. To fulfil the strict requirements on the water inflow, in 1/3 of the excavated tunnels we have performed pre-grouting with microcement, using our up to date equipment and a top level technology.

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MECSEKÉRC

Construction of the National XXXX Radioactive Waste Repository in Bátaapáti


MECSEKÉRC

Beside of the excavations we have performed continuous geological/technical/geotechnical/hydro-geological documentation, and up to date and integrative data service for the geological research, design and construction works. To assure the completion of mining/excavation work, the installation of the final technological (mechanical, building, electric, light current), safety, informatics systems almost at the same time, the company co-ordinated the activity of several special subcontractors, such a way the deadline could be kept.

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The fields of the own activity: • planning /designing XXXXXXXXXX • technical control, main contracting, co-ordination • tunnelling with mining methods • grouting • geotechnical investigations • comprehensive geodetic data service • implementation and operation of monitoring systems • geological research/exploration • geological documentation, evaluation • operation of infrastructure • implementation of technological systems

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MECSEKÉRC Ltd. and Tata Environmental Protection Ltd. in a consortium way implement the comprehensive abandonment works of Gyöngyösoroszi ore mine. The final abandonment works of ore mining, tasks connecting to state investments are related to the abandonment of environmental damages caused by mining works so as to reduce the heavy metal content of the out flowing water from the underground voids and also to keep the discharge limits of the water treatment plant. The principal task of MECSEKÉRC Ltd. as part of the abandon­ ment works is to remediate the reopened underground voids of Gyöngyösoroszi and Mátraszentimre mining plants, to prepare the explored areas for backfilling with power plant fly ash and after the backfill and the termination of the works to demolish the facilities of the plant and to make final remediation. Therewith a task is also to operate the monitoring system established in the surface area concerned the abandonment works and to make laboratory tests during the whole period. The company makes the works jointly with subcontractors. A complete surface facility of a mining plant was built up in Mátraszentimre in the frame of the preliminary works for the final abandonment. The facility provides the infrastructure for the completion of the planned works. The exploration of the underground openings started with the reopening of the whole length backfilled, 340 m deep vertical shafts and the partly backfilled inclined shaft. Also the reopening of the whole 5,350 m long Altáró adit was completed parallel with the shaft sinking works. This resulted connection

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MECSEKÉRC

Mátra project


MECSEKÉRC

between the two plant-areas and allowed the through ventilation, the possibility of energy and material supply and also the water outlet from the voids to the surface water treatment plant. After the main galleries had been reopened and the necessary infrastructure had been reconstructed, the exploration and the preparation for backfilling of the Mátraszentimre extracted levels started. During the exploration, backfilling boreholes have to be deepened between the levels, the mechanical equipments, boundary dams, drainage system and monitoring elements of the backfilling have to be constructed and installed. These allow to backfill the prepared void system with wet fly ash thereby to reduce the quantity of polluting sources and to improve the quality of the out flowing water. The backfilling of the mining voids is planned to be made sectional from the bottom to upper levels. The underground works will be finished with the construction of the drainage system of Altáró adit and the backfilling of the shaft. The surface works that follow the backfilling will be ended with the demolishing works of the facilities of the plant and the land remediation of the concerned areas.

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Engineering and Expert Services: • geological planning and expert tasks • design and implementation of complex geological surveys • organization and management of geological works, project management • preparation of earth sciences and environmental tenders • modern approach to mineral resource evaluation

• design, implementation, study, technical inspection, documentation and complex (geological, geophysical, hydrogeological) assessment of drilling projects or individual drills • prepatation and official licensing of technical and operational plans related to mineral row material exploration • organization and execution of geological field works, geological mapping, exploration, drilling and roadway documentation, sampling • planning, management and execution of geophysical surveys • structural geological and geo-morphological survey • drawing of geological maps and profiles

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MECSEKÉRC

Engineering and Expert Services


MECSEKÉRC

• GIS: preparation of geographic information systems, • compiling and analysis of geoscience databases and thematic maps • preliminary or detailed environmental and hydro-geological impact assessment • compilation of Integrated Pollution Prevention and Control (IPPC) permitting documentation

• preparing damage prevention plans • compilation of preliminary, establishment and operational water right licensing documentation in connection with drillings and wells • planning, executing and evaluating water and soil sampling as well as monitoring projects • preparation of environmental assessment and engineering action plans as well as final reports • preparation of aquifer protection plans • leakage hydraulics, contamination- and heat transport modeling • quantitative risk analysis • evaluation of pumping tests • implementation of environmental remediation • compilation of soil analysis and geotechnical planning reports

Planning and Expert licenses on the following fields: • water engineering and designer expertise • environmental planning and expertise on the fields of geology, hydrogeology and waste • geotechnical planning Special softwares need for the processing and presentation of test results are licensed available:

(Surfer, Strater, Grapher, Voxler, Autodesk Map 3D, MVS Premier, ArcGIS Desktop, CorelDRAW, AquaChem, Aquifer Test, AQTESOLV, HydroGeo Analyst, FEFLOW®, Processing Modflow Pro, RISC WorkBench, RBCA, GEMCOM raw material modeling, assessment and mining design software)

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In-situ explorations, testing: • implementation of exploratory drilling for soil mechanics and for environmental uses • drilling machine: Borro type hand drill machine up to a depth of 5-6 m • Glencoe 20 TM type mobile hydraulic drilling equipment up to a depth of 20 m with a spiral dry drilling • mobile hydraulic caterpilar drilling equipment, type of Massenza M.I.2, up to a depth of 60 m with a dry spiral/continuous core drilling with water flushing in hard rocks using a hollow inner spiral (Hollow Stem Auger), even with a continuous core sampling in case of loose, collapsible also of soil under groundwater • monitoring well construction up to a depth of 50 m • on-site density profiling with PANDA penetrometer • on-site methane, oxygen and carbon dioxide measurements in boreholes and in gas ventilated wells • on-site k-factor measurement with infiltrometer • earth works, bulk density, water content and the comapctness of binder-free base layer determination with MC-3-122 isotope density gauge • load bearing capacity test of roadway structures with disc load capacity meter Laboratory tests: • sample preparation (drying, milling, pulverizing) for all chemical and trace element studies • thin section preparation, investigation • water content, wet and dry bulk density determination • grain-size distribution test • plastic index test • compressibility (Proctor) test • compression test with odometer • k-factor test in triaxial cell

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MECSEKÉRC

Environmental Geological and Soil Mechanical Tests


MECSEKÉRC

Hydraulic Test of Wells and Water Sampling

Hydro-geological field investigations (hydro-geological mapping, status record) Hydraulic test of wells: • production test for fixed and variable-flow of water, continuous instrumental measuring of water chemistry parameters, fill-up measurement • multi-packer systems operation • analysis of data by software (AquaTest for Windows, AquferWin32, AqteSolve).

Water sampling for physical, chemical, isotop analytic and separated gas content test: • measurement of water level and borehole’s bottom level from 0 to 1000 m • operation of automatic water level recording equipment from 0 to 300 m depth • water sampling from subsurface waters, drinking water, the surface of still waters and rivers and from sewage • water sampling in special circumstances (eg: deep mine) • on-site instrumental measurement of the changing water chemistry parameters (temperature, specific electrical conductivity, pH, redox potential, dissolved oxygen content) in water samples

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Soil and rock testing • sample preparation, extraction with microwave exploring device up to 80 samples per day) • determination of pH, electrical conductivity, moisture content, loss on ignition, carbonate content • determination of the solubility of toxic elements, heavy metals and semi-metals content • by ICP-OES, MS and mercury specific AFS devices. in accordance to Regulation 6/2009. KvVm-EüM-FVM Chemical analysis of water • chemical analysis of the surface, subsurface water and wastewater for the following components: • pH, resistivity, conductivity, sodium, potassium, calcium, magnesium, chloride, sulfate, carbonate, hydrogen carbonate, total hardness, phosphate, fluoride, total dissolved solids, ammonium, nitrite, nitrate, manganese, iron, chemical oxygen demand (KOIPS and KOIK). • determination of the concentration of various chemical elements and other toxic metals and metalloids with ICP-OES, MS and mercury specific AFS devices in accor-dance to Regulation 6/2009. KvVm-EüM-FVM and 10/2010. VM

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MECSEKÉRC

Chemical Laboratory


• sample preparation, extraction (with microwave exploratory, aqua regia) • determination of pH, moisture content, ignition loss • determination of the soluble toxic, heavy metals and semimetal content by ICP-OES and MS and AFS-specific mercury devices

Radiometric Laboratory

MECSEKÉRC

Analysis of solid waste

• radon exhalation tests by special in-situ testing procedure • alpha contamination measurement on surface • air tests: determination of the quantity, short-and long-lived alphaactivity and radon concentration of aerosol and of fallout. Air gamma dose rate determination. • water testing: laboratory determination of water samples for uranium, radium content, radon concentration and for specific radioactivity. • soil and plant tests: specific activity of soil samples, determination of the qualitative and quantitative characteristics of radioactive elements by gamma-spectrometric analysis. Plant samples Unat and 226Ra content and specific activity. • complex surveys: radiological environmental impact assessment of industrial objects and residential areas, survey of residential or occupational radiation exposures, provision of do-simetry service

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The survey, map drawing and planning activities of the Department of Geodesy of the MECSEKERC Ltd are essential during both on the surface and in underground works e.g. exploration, mining, engineering, monitoring and design. At the 2D and 3D/4D visualization, evaluation and modelling of objects and data is a basic need to record them with coordinates in given time. Activities Alignment of properties: • Dividing of properties, marking of buildings, rights, servitudes of properties • Digital maps: • drawing of digital base maps, drawing of actualized plans, preparation of designs Digital landscape models : • relief survey, 3D relief model, ground mass calculation Industrial geodesy: • contract surveying, alignment of constructions, control survey, movement survey Mine surveying: • survey, mapping of open pits, • underground survey and mapping, alignment of underground voids, tunnels, (control of drilling jumbos by laser) Instruments, software used • 4 pieces of Leica motorized LASER survey station (TS30-05 and TCR P1201 R300) with tunnelling program, ATX 1230 + GPS receiver, Leica DNA 03, Sprinter and Sokkia SDL30 levelling instruments • TRIMBLE 5605 DR 200 + survey station • ITR, AutoCad Map, AutoCad Civil 3D, AutoGeo, TMS tunnel control, evaluation software, HP DesignJet 4500 plotter

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MECSEKÉRC

Geodesy


MECSEKÉRC

Infra-red mapping

We can prepare energy certificate according to the Government Decree 176/2008. (VI.30.). For the calculation needed for this we use the software of the Bausoft Ltd. The heat transmission coefficient (“U” value) of unknown masonries we can measure with non-destructive test. With our top category TESTO 890 infra-red camera (heat gun) we can visualize the temperature distribution of surfaces between -20 – +1200°C.

We can fulfil: • infra-red investigation of buildings • discovering of areas endangered by mould formation • visualization of heat producing electric fittings • breakdown localization at leaky floor heating • the infra-red camera records are extremely informative, they can be interpreted very easily

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Mecsekérc Ltd.  

Mecsekérc Ltd. introduction

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