Nuclear industry

    Slovenian Nuclear Safety Administration has granted our company a licence to carry out radiation services.

    The licence confirms our competence and commitment to high standards of safety and professionalism in working with sources of radiation. 

    Wifi installation in the IB100, AB115 and FHB115 technologic area

    Client: Nuclear power plant Krško

    • Providing WiFi coverage in the NPP Krško technologic area for access to applications,
    • providing a power source in the event of a single power failure, which is crucial during an outage when multiple power switches are performed.
    Implementacija zaščite pred izpadom ene faze in zamenjava sekundarne opreme v 110 kV in 400 kV poljih

    Enhancement of the emergency power supply

    mod. 1255-SY-L

    • Upgrade of protection systems,
    • replacement of equipment in high-voltage fields (110 kV and 400 kV)
    • improvements in the monitoring and registration of transients,
    • addition of an automatic tripping function for transformer T3 in case of phase failure,
    • upgraded secondary equipment in 400 kV fields,
    • replacement of protection on 6,3 kV busbars,
    • added switches in the MCR for the connection to the Brestanica thermal power plant.

    Alarm response centres relocation and upgrade

    Client: NPP Krško

    • Complete modernisation of NPP Krško's technical protection systems,
    • upgraded power supply systems, alarm response centres, security management systems, video surveillance system, PLC subsystem, etc.
    Zamenjava CA kompresorja

    CA compressor replacement

    mod. 802-CA-L

    Client: Nuclear power plant Krško

    • Removal of the obsolete IA904CPR-003 compressor and its sub-components,
    • replacement of the obsolete reciprocating compressor with a modern, air-cooled screw compressor,
    • installation of an air dryer to improve CA air quality.
    HI-STORM

    HI STORM

    Client: Holtec International

    Stavba za suho skladiščenje izrabljenega goriva (DSB)

    Spent fuel dry storage building

    mod. 1217-AB-L

    Client: Kostak

    • The Dry Storage Building (DSB) is a single-storey structure consisting of reinforced concrete slabs, reinforced concrete walls and a steel structure above it.
    • The main function of the DSB building is to protect containers (storage barrels for spent fuel elements) from environmental influences. The DSB building is designed to store 70 containers, which will be sufficient until the end of the NEK's operation.
    Nadgradnja seizmične instrumentacije

    Seismic instrumentation upgrade

    mod. 1230-SE-L

    Client: Nuclear power plant Krško

    • Replacement of NPP Krško's seismic system, all associated cabling and refurbishment of 11 measurement sites,
    • six additional sites in the new buildings BB1, BB2, DSB and the existing buildings IB100 and AB82, for a total of 17 measuring sites,
    • replacement of the seismic container, construction of the borehole for the depth sensor and civil works to set up the seismic instrumentation infrastructure.
    Podpora pri zamenjavi visokotlačne turbine

    High-pressure turbine replacement support

    mod. 1098-TU-L

    Client: Siemens Energy

    • Supporting the disconnection and removal of instrumentation from an old high-pressure turbine and the installation of a new one.
    • Preliminary modifications: replacement of the main generator, AVR, exciter and upgrading of the power transmission systems to increase the generator output from 813 MVA to 850 MVA.
    Obnova Operativno podpornega centra (OPC)

    Reconstruction of the operation support centre – OSC

    mod. 1056-NA-L

    Client: Nuclear power plant Krško

    • Built for operational support in the event of an accident or emergency at NEK,
    • fabrication and installation of conduit supports, cable laying, installation of electrical equipment (lighting, fire and communication systems), installation work on the power supply section,
    • all necessary tests and measurements were carried out.
    Druga utrjena varnostna zgradba (BB2) s podpornimi sistemi

    Bunkered building (BB2 project) with support systems

    mod. 1024-BS-L

    Client: Ansaldo Nucleare

    • Alternate Safety Injection (ASI) system,
    • Auxiliary Auxiliary Feedwater (AAF) system,
    • support systems in building BB2, 
    • emergency power supply.
    Gradnja vodnjakov za podzemno vodo in spremljanje nivoja zaradi gradnje HE Brežice

    Construction of groundwater wells and level monitoring for the construction of the Brežice hydroelectric power plant

    mod. 1063-PW-L

    Client: Nuclear power plant Krško/HESS

    • Construction of three water boreholes within the diaphragm wall of the NI, three distribution pipelines and a cable duct with four PEHD pipes to the pre-treatment building,
    • repositioning and upgrade of some control points and construction of flood embankments and sealing diaphragms in the reservoir areas due to the rise of the Sava level,
    • changes in the impact of groundwater on the underground parts of the NPP Krško facilities, with no impact on the maximum measured levels outside the NPP Krško sealing diaphragm, which were already at high levels.
    Alternativno hlajenje reaktorskega hladilnega sistema (RCS) in reaktorske zgradbe (RB)

    RCS and CNT alternative cooling design

    mod. 1029-RH-L

    Client: Idom

    • Installation of an Alternative Remaining Heat Recovery (ARHR) system with an additional pump and heat exchanger,
    • Installation of connection points and non-return valves on existing RHR lines A and B, and connection points on SI and CI systems.
    Izgradnja pomožne komandne sobe

    Construction of emergency control room - ECR

    Remote shutdown capabilities

    Client: Nuclear power plant Krško

    • Installation of ECR instrumentation and rewiring of safety components for safe shutdown of the plant (valves for cooling system, chemical composition, volume, heat rejection, safety injection, containment scrubbing),
    • establishment of a fully operational auxiliary control room.
    Optimizacija merjenja temperature sistema reaktorskega hladila (RCS)

    RCS temperature measurement optimization

    mod. 716-RC-L

    Client: Nuclear power plant Krško

    • Installation of Resistive Temperature Detectors (RTDs) directly in the primary coolant line, reducing maintenance and the possibility of leaks,
    • integrated detectors: 6 RTDs in hot branches, 2 in cold branches, fused connections on intermediate branches.
    Rekonstrukcija 400 kV stikališča NEK

    Reconstruction of the 400 kv switchyard of the Krško NPP

    Outage 2010 - outage 2015

    Client: ELES

    • Phase 1 (2010): replacement of G2 busbars, support isolators and gantries.
    • Phase 2 (2012-2013): Replacement of the remaining busbars, relocation of the HV-apparatus metering field in RTP Krško and relocation of the Q15 and Q16 earthing conductors.
    • Phase 3 (2013): Replacement of G1 busbars and insulators in AC03 and AC04, relocation of AC07 metering field in CA13 and replacement of Q16, Q26, Q15 and Q25 earths.
    • Phase 4 (2015): Renovation of the captive power system, renovation of the lighting system in the switching station, replacement of the power system in the SAH with a diesel genset and UPS, and installation of an alternative power supply system for the RC1 and RC2 computer centres.

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    Company data

    Elmont

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    Cert ID: 0088/00092
    DominoCert Certificate of digital success
    ELMONT d.o.o. Krško
    Business Registration Number: 5829119000