Projects

Current tasks

  1. “Modernization of the systems for measuring the activity of discharges (SIAI) through the ventilation pipes of Kozloduy NPP, units 5 and 6, with a normal range: 5.6XQ43, 5.6XQ44 and 0XQ47”.
  2. “Design, supply and installation of a functional unit consisting of a minimum of a pulse valve, a pulse valve with an electric motor and a solenoid valve, of the safety valves of the steam generators”
  3. Replacement of the upper level software and technical complex (PTK-VU) of the internal reactor control system (IRC) of unit 5 at Kozloduy NPP and supply of the APA-H program complex (ALPHA-H, PHOENIX-H, ANC-H).
  4. “Modernization of two RTM860TS whole-body measurement monitors with Two Step Exit II monitors in rooms B337 and B340”.
  5. “Development of safety analyses for licensing and implementation of an alternative type of nuclear fuel at Unit 5 of Kozloduy NPP at 3120MW operation”
  6. “Replacement of RT cabinets, panels with normalizing converters, cross cabinets and power supply panels of KIP sensors on I and II circuits” at Kozloduy NPP, Units 5 and 6
  7. “Update of probabilistic safety analysis (VAB), level 1 for full power, for low power and for a stopped reactor at Units 5 and 6 and expansion of its scope taking into account the internal and external hazards characteristic of the Kozloduy NPP site and the influence between the units”
  8. “Modernization of the neutron flux control equipment (AFCO) at Kozloduy NPP, Units 5 and 6”
  9. “Migration of the computer information management system (CIMS) “Ovation” at 5 and Unit 6 at Kozloduy NPP to the latest generation platform “Ovation”, including integration of a visual indication system for safety parameters (SPDS), symptom-based emergency instructions (SBI) and partial modernization of a full-scale simulator PMS-1000”
  10. “Design, delivery, installation and commissioning of energy-efficient industrial lighting at the Kozloduy NPP site, units 5 and 6”
  11. Reconstruction of existing lighting installations for working and emergency lighting of the spent nuclear fuel room No. 201 and the spent nuclear fuel unloading room No. 202 in the “Spent Fuel Storage” building – Kozloduy NPP with energy-efficient.
  12. “Design of the topic: Filtering of imbalance waters from SVO-5 (cleaning the steam generator purge) with a filter for retaining granular material (trap filter)”

2019-2022

  1. “Design, delivery, installation and commissioning of emergency working and emergency evacuation lighting in buildings of Kozloduy NPP, units 5 and 6, with LED lighting fixtures”
  2. “Modernization of humps with an optimized profile for steam distribution mechanisms from the allocation of Turbogenerator 9 (TG-9), allowing for a larger stroke of the control valves”, Kozloduy NPP Unit 5
  3. “Update of “Technical and economic analysis for management of the infrastructure of general plant facilities and buildings, which is independent of units 1 to 4 of Kozloduy NPP. Part: Analysis for fluid supply”, related to the displacement of technical water pipelines group A from the second and third systems of unit 4 outside the Engine Room”
  4. Development of Regulatory Guide for deterministic safety analysis of nuclear power plants with pressurized water reactors.
  5. Project Management and Engineering Services Group at SE “RAO” for consulting services for tasks on decommissioning of units 1 to 4 and site selection, design, safety assessment, construction and commissioning of the National Radioactive Waste Repository (Subcontractor of a Consortium with Empresarios Agrupados and Nuvia)
  6. Engineering support for the Decommissioning and Radioactive Waste (RAW) Management Program of ISPRA (Italy)
  7. Development of a feasibility study for licensing and implementation of an advanced type of nuclear fuel for units 5 and 6 of Kozloduy NPP EAD operating at 3120 MW (Westinghouse Subcontractor)
  8. Expertise on selected aspects of the Periodic Safety Review (PSR) of Kozloduy NPP Unit 6
  9. “Development of design documentation for modernization of the control scheme for regulating flaps of Turbogenerator 9 (TG-9) at Kozloduy NPP, Unit 5”
  10. “Design of technological pipelines located on existing trestles built on the territory of Mondi-Stamboliyski EAD”
  11. “Expertise on selected reports from Stage 2 of the project for extending the service life of Unit 6 of Kozloduy NPP, related to substantiation of the possibility of safe operation of the reactor vessel and part of the main building structures”
  12. “Assessment of the compliance of the interim safety analysis report of Belene NPP with the current safety requirements for nuclear power plants”
  13. Modernization of the existing systems for technical diagnostics of main circulation pumps GCN-195 M, Kozloduy NPP, units 5 and 6
  14. “Development and implementation of a project for installation and replacement of displacement limiters, hydraulic shock absorbers and springs with roller blocks on pipelines 5TQ12,24,33; 5TX11,12,13,14; 5YP and 5YT”, (systems for emergency and planned cooling, emergency feedwater, volume compensator, hydraulic accumulators) Kozloduy NPP, Unit 5
  15. “Project on the topic: Replacement of a compressed air pipeline for testing systems 5.6 ХА (hermetic volumes of units 5 and 6 at Kozloduy NPP) for density in Section Х, K-9 to 5.6TP90S01”
  16. “Calculation and verification of seismic resistance of a pipeline from system 5.6 RY (steam generator purge), when replacing safety valves DN150”
  17. “Assessment of the compliance of the interim report for the analysis of the safety of Belene NPP with the current regulatory requirements for radiation protection”
  18. Preparation of “Calculations for the justification of the safety for the packaging of radioactive waste (RAW) with an activity greater than 0.1 TBq in reinforced concrete containers StBK during RAW management at the Joint Venture “PHRAW – Novi Han”

2018

  1. Project Management and Engineering Services Group at the State Enterprise “RAO” for consultancy services for tasks related to decommissioning of units 1 to 4 and site selection, design, safety assessment, construction and commissioning of the National Radioactive Waste Repository (Subcontractor of a Consortium with Empresarios Agrupados and Nuvia)
  2. Replacement of automatic gas analyzers on power transformers 9GC01, 9GC02, 5BT01, 5BT02, BT05 and BT06 at Kozloduy NPP
  3. Engineering support for the Decommissioning and RAW Management Program of ISPRA (Italy)
  4. Analysis of the melt propagation during the off-shell phase of a severe accident for VVER-1000
  5. Development of a Regulatory Guide for the Management of the Aging of Structures, Systems and Components in Nuclear Power Plants (client: Nuclear Regulatory Agency – NRA)
  6. Preparation of an analysis of the possibilities for storing spent nuclear fuel from VVER-1000 reactors at the Kozloduy NPP site
  7. Implementation of repair and electrical installation activities on main and auxiliary equipment and systems of nuclear power units 5 and 6 of Kozloduy NPP during and/or related to the planned annual repairs in 2018 – separate item No. 1
  8. Development of design documentation for installation of dampers on fresh steam pipelines for unit 5 of Kozloduy NPP
  9. Working projects for modernization of systems at Mondi Stamboliyski EAD

2016-2017

  1. Project Management and Engineering Services Group at SE RAO for consulting services for tasks on decommissioning of units 1 ÷ 4 and site selection, design, safety assessment, construction and commissioning of the National Repository for radioactive waste (Subcontractor of Consortium with Empresarios Agrupados and Nuvia)
  2. Installation of new heat exchangers TS10W01,02,03 (from hydrogen afterburning system) and shut-off and drainage fittings on the lines of the technical water system, providing the possibility of shut-off and flushing of the heat exchangers at Kozloduy NPP
  3. Design and implementation of a system for heating and cooling the metal of the water chambers and tube sheets of high-pressure chamber-type heaters (PVN-K) for Kozloduy NPP
  4. Modernization of control and management systems of Special Building 3 (SK-3) of Kozloduy NPP (Subcontractor of Westinghouse)
  5. Project for installation of L-shaped crane 5.6YW00E09 in the central hall, in the area of the Main Circulation Pumps 5.6YD10(40) at Kozloduy NPP
  6. Expertise of the technical documentation for unit 6 under the project: “Development of an advanced nuclear fuel cycle and justification of the safe operation of units 5 and 6 of Kozloduy NPP EAD with modified nuclear fuel with a capacity of 3120 MW”
  7. Investigation of the operating modes of the HVAC system in the Radioactive Waste Processing Plant (RWP) at the Kozloduy NPP site
  8. Design of steam and condensate pipelines serving the blowing system of the biofuel combustion boiler at Mondi Stamboliyski EAD
  9. Design of pipelines for PM2 paper machine at Mondi Stamboliyski EAD
  10. Design of a new pipeline for draining High Pressure Preheaters (HPH) at idle speed of the turbogenerator (TG) at low power up to 100 MW for units 5 and 6 at Kozloduy NPP
  11. Design of a new line from the steam generator purge system to the technological condenser for units 5 and 6 at Kozloduy NPP
  12. Performing a hydrodynamic check of foreign body migration in the cooling system of the 10GQ generator at Kozloduy NPP
  13. Computational check of underground pipeline No. 5 from the technical water system for responsible users (QF) at Kozloduy NPP
  14. Design of an overpass for moving diesel units in a horizontal direction at EUROMETAL
  15. Author’s supervision and technical assistance during the implementation of construction and installation works (C&I) of the investment project “Design and implementation of a system for heating and cooling the metal of the water chambers and tube sheets of high-pressure chamber-type heaters (PVN-K) at the NPP “Kozloduy”
  16. Implementation of repair and electrical installation activities on main and auxiliary equipment and systems of nuclear power units 5 and 6 during and/or related to the planned annual repairs in 2016. at Kozloduy NPP
  17. Delivery of repairable check valves for emergency feedwater system at Kozloduy NPP
  18. Reconstruction of hydrazine hydrate storage facility at Kozloduy NPP
  19. Strength analysis of tube bundle of high pressure heaters PVN–6 and PVN–7 at AES Galabovo TPP
  20. Design of a new expansion tank of turbogenerators TG–9 and 10 at Kozloduy NPP
  21. Preparation of an analysis of the possibilities for temporary storage of radioactive waste (RAW) resulting from the decommissioning activities of units 1-4 of Kozloduy NPP on the territory of the extension of the dry storage facility for spent nuclear fuel (HSSFSF Stage Ia)
  22. Design of a new pipeline for additional drainage of the outlet pipes of pipelines 5SA10 to 5RB10,20,30,40W01 in front of 5SH13S03,04 to 5SD11, which will ensure sufficient throughput for their normal drainage during the deployment of 9TG at Kozloduy NPP
  23. Design of steam pipelines 11b in PM2 at Mondi Stamboliyski EAD
  24. Modification and seismic strengthening of the metal structure of cranes 5,6UQ00E01 at Kozloduy NPP
  25. Rerouting of the pipelines for supplying condensate from the steam superheater separator SPP to the CN (5,6 SH31, 32S01) at Kozloduy NPP
  26. Expertise of selected reports from Stage 2 of the project for extending the operational life of Unit 5 of Kozloduy NPP, related to substantiation of the possibility of safe operation of the reactor vessel and part of the main building structures
  27. Additional analysis for assessing the behavior of “TVSA” and “TVSA-12” type cartridges with mixed fuel loadings under the conditions of expected operational events at Kozloduy NPP
  28. Design of technological pipelines of the system for capturing and transporting turpentine in the workshop: Cellulose of “Mondi Stamboliyski” EAD
  29. Reconstruction of the steam pipeline “Drainage of sharp steam” at AES “Galubovo”
  30. Performance of strength testing of membrane-type seam joints of heat exchangers for emergency and planned cooling of the primary circuit 5TQ10,20,30W01 at Kozloduy NPP
  31. Design of a new line after 5RY10S32;5RY10S33 and 6RY40S01;6RY40S02 at the entrance to 5(6)RR20W01 after 5(6)RN11S20” at Kozloduy NPP

2014-2015

  1. Project Management and Engineering Services Group at SE RAW for consultancy services for decommissioning tasks of units 1 to 4 and site selection, design, safety assessment, construction and commissioning location of the National Radioactive Waste Repository (Subcontractor of a Consortium with Empresarios Agrupados and Nuvia)
  2. Design and implementation of a system for heating and cooling the metal of the water chambers and tube sheets of high-pressure chamber-type heaters (PVN-K).
  3. Project for Modernization of the gas blowdown systems of units 5 and 6 of the Kozloduy NPP..
  4. Report on the safety analysis of a spent nuclear fuel repository (SRF) with “underwater” storage technology (SRF OAB) and Report on the safety assessment of a SRF with “underwater” storage technology (SRF OAB).
  5. Development of a detailed design for “Expansion of a coke oven gas system in Duisburg Huckingen” (Germany) for Enemona as the main contractor.
  6. Modernization of a radiation control system in a spent nuclear fuel repository (SRF), design part – subcontractor of Energo Service.
  7. Assessment of the capabilities of spray pools (BB) to preserve and maintain a sustainable material energy balance as thermal facilities, ensuring reliable cooling of the core under extreme weather conditions, Kozloduy NPP, units 5 and 6
  8. Specific analyses of the barriers to the spread of radioactive products during operation of the 3120 MW reactor installation, Kozloduy NPP, units 5 and 6.
  9. Modernization of control and management systems of Special Building 3 (SC-3)” (Westinghouse subcontractor).
  10. Modernization of the control of radiation monitoring monitors type RTM860TS and delivery of monitors for radioactive contamination of the body with gamma and beta detectors.
  11. Design of a new support and suspension system for the pipelines in the trestles from SC-3 to units 5 and 6 of Kozloduy NPP.
  12. Detailed design for the installation of new pipelines for CNCG gases and condensate on trestle 1 and Conceptual design for pipelines on trestle 1 to a new HVO in Mondi EAD.
  13. Detailed design for installation of new heat exchangers TS10W01, 02, 03 and shut-off and drainage fittings on the lines of the technical water system, providing the possibility of shut-off and flushing of TS10W01 – 03.
  14. Performing verification calculations for the behavior of the compensator of the collector of 6 steam collector of TG-9 subject to repair, Kozloduy NPP, Unit 5

2011-2013

  1. Project Management and Engineering Services Unit at Kozloduy NPP for tasks related to decommissioning of Units 1 and 2
  2. Project Management and Engineering Services Group at SE “RAO” for consultancy services for site selection, design, safety assessment, construction and commissioning of the National Radioactive Waste Repository (Consortium with Empresarios Agrupados and VT Nuclear Services)
  3. Replacement of the main steam pipeline of TG№4 from the gate valve to the flange connections of the High Pressure Cylinder (HPC) at TPP “Sofia Iztok”
  4. Preparation of a detailed design for a new route of the steam pipeline after 5, 6RL21,22W01,02 on the territory of “Kozloduy NPP” EAD”
  5. Conducting Author’s Supervision and providing Technical Assistance during Construction and Demolition under a project by “Enpro Consult” OOD, city of Sofia on the topic: “Change of the scheme for supplying HOV to electrolyzers ZH71, 72 and of the existing scheme for air conditioning of their premises with water from the 0UX31H01 system with 0UW33D01
  6. Carrying out a seismic resistance check of the mechanical structure of the sensors for wide-range thermal control of the reactor vessel of reactors 5 and 6 of Kozloduy NPP
  7. Design of a detachable connection of the pressure control pipeline after the first stage of the sealing block of the Main Circulation Pumps (GCP), units 5 and 6 of Kozloduy NPP
  8. Conducting “stress tests” as a targeted reassessment of the safety reserves of the facilities at “Kozloduy NPP” EAD in the event of catastrophic natural events leading to a severe accident:
  9. NPRO as the developer of lot 5 and Westinghouse as a subcontractor, reviewing the report
  10. estinghouse as developer of Lot 6 and ENPRO CONSULT as subcontractor, performing report review
  11. Design of additional supports for the recirculation pipeline of the emergency feedwater system 5.6ТХ40D01, units 5 and 6 of Kozloduy NPP
  12. Feasibility study of the construction of a new nuclear power plant at the Kozloduy NPP site (subcontractor of Westinghouse)
  13. Design of overpass 1 in Mondi EAD, Stamboliyski for Enemona as the main contractor.
  14. Analysis and assessment of the radiation situation in the premises of the building, Block Control Panel (BCP) and Backup Control Panel (RCP), units 5 and 6 of Kozloduy NPP
  15. Investigation of the possibility and preparation of a conceptual design for an autonomous cooling system of the compartments in a spent nuclear fuel storage facility (SNF)

2009-2010

  1. Expertise of selected design solutions proposed by the technical design of Belene NPP
  2. Analysis of the radiological consequences after a design accident large leak from 1 loop with DN 850 in the volume of the containment and Reactivity and thermohydraulic analysis of a postulated initial event – release of regu
  3. Analysis to prove the possibility of operation of fast-acting reduction devices to the atmosphere BRU-A-5,6TX50, 60, 70, 80S05 with water and two-phase (steam-water) mixture (subcontractor of Atomtoploproekt for the part on models for strength verification and strength calculations
  4. Assessment of inaccuracies in predicting neutron and thermo-hydraulic parameters for selected accidents of VVER-1000 (contract with IAEA)
  5. Study of possible ways and means, design and implementation for alternative feed of steam generators in case of an accident with complete loss of alternating current sources of units 5 and 6 of Kozloduy NPP EAD

2007-2009

  1. Project Management and Engineering Services Unit at Kozloduy NPP for tasks on decommissioning of units 1 and 2. Important projects implemented by ENPRO CONSULT within the Project Management Unit are:
    • Updated the strategy for decommissioning of Units 1 to 4.
    • Development of a Decommissioning Plan for Units 1 and 2.
    • Technical design and supply of the necessary equipment for organizing Material Size Reduction Areas in the Machine Room, Units 1-4 at Kozloduy NPP.
    • Technical design and supply of the necessary equipment and materials for installation of new water pipelines between technical water, Group “B” – Units 3,4 with technical water system of Units 1,2.
    • Connection between pipelines Du400 and technical water system, Group “B” – Units 3&4 – and technical water system – Units 1&2
    • Development of plate heat exchangers for backup of heat exchangers 1, 2HWB-A.
    • Development of a Safety Analysis Report for Decommissioning.
    • Assessment of the residual resource of systems, components, buildings that remain in use during decommissioning.
    • Development of a Safety Analysis Report for the operation of Units 1 and 2 of Kozloduy NPP as a RAW Management Facility through the Specialized Division “Decommissioning – Kozloduy”
  2. Development of a project for a comprehensive radiation survey of Units 1 and 2 of “Kozloduy NPP” EAD – subcontractor of EWN.
  3. Independent expertise and justification of the safe operation of Unit 5 of Kozloduy NPP during non-design operation of the drives of the control and protection system (CPS) SHEM-3
  4. Draft of the third national report of the Republic of Bulgaria on the implementation of the obligations arising from the Unified Convention on the Safety of Spent Fuel Management and on the Safety of Radioactive Waste Management”
  5. Assessment of the residual resource of systems and facilities for the storage of spent nuclear fuel (SNF) and of the technological systems in the spent nuclear fuel repository (SNF) of Kozloduy NPP
  6. “Development of a Program for the study, analysis and assessment of the mechanical characteristics of pipelines group “B” of Unit 6 of Kozloduy NPP after 100,000 hours of operation” (subcontractor of AtomToploproekt)
  7. Implementation of an additional possibility for emergency filling of spent nuclear fuel pools BOK-V,G in case of rupture of pipelines connected to BOK-V,G, which provide cooling and water level maintenance, necessary for the safe storage of spent nuclear fuel (SNF)
  8. Increasing the seismic resistance of pipelines providing cooling and water level maintenance in spent nuclear fuel pools BOK-V,G
  9. Design of thermal insulation for equipment and pipelines of Unit 1 of Maritsa East 2 TPP
  10. Preparation of a detailed design for the construction of a temporary scheme with a support and suspension system, necessary for performing steam purging of BL.3 and BL.4 and carrying out author’s supervision during the implementation
  11. Detailed design for the repair of a boiler-utilizer at an incinerator for the incineration of hazardous hospital waste

2005-2006

  1. Participation in the modernization program of units 5 and 6 of Kozloduy NPP, subcontract with Framatom – Updated Technical Safety Case (ATSC).
  2. Project Management and Engineering Services Unit at Kozloduy NPP for decommissioning tasks of units 1 and 2 (Subcontractor of BNFL/EDF).
  3. Development of a Technical Design for Radioactive Waste Processing and Storage Facilities for the Novi Khan-2 National Repository, EuropeAid/116740/D/SV/BG (together with Empresarios Agrupados, Spain).
  4. Study of the power reduction regimes when switching off two of the two turbo-feed pumps of units 5 and 6 at Kozloduy NPP – contract with GRS, Germany.
  5. Development of an additional package to the technical safety justification (TSF) of units 3 and 4 of the Kozloduy NPP and justification of a large leak mode LOCA 2xDu 500 as a design basis accident.
  6. Analysis and justification of the need to assess the residual resource of the building structures, systems, facilities and components in a spent nuclear fuel storage facility (SNF).
  7. Increasing the operational reliability of the main steam pipeline “superheated steam” in the section Outlet collector of KPP-II – tee junction “balance main steam pipeline – KA-9, KA-12, KA-10” – TPP “Maritsa Iztok 2”.
  8. Detailed design for installation and connection of a new ignition reduction cooling device (RROU) of EC 1 and EC 2” for Sofia-East Thermal Power Plant.
  9. Technical solution and Detailed design for strengthening the pipelines necessary for performing steam purging of unit 1 and unit 2 of Maritsa East 2 TPP
  10. Performing strength calculation of transition to 5ТQ40S08 and 5ТQ40S09 – units 5 and 6 of Kozloduy NPP (emergency and planned primary circuit cooling system)
  11. Design of a bypass pipeline of the UM system in a heat distribution station – Kozloduy NPP
  12. Detailed design of a new support and suspension system of oil pipelines from SA51 to SC51D41,42 and from SA52 to SC52D41,42 – Units 5 and 6 of Kozloduy NPP
  13. Replacement of control valves 5RN81S01, 5RN82S01, 5RN91S01, 5RN92S01, 5RN11S02, 5RN12S02, 5RN21S06, 5RN22S06 of the RN system – Units 5 and 6 of Kozloduy NPP
  14. Detailed design of a steel chimney with H+38.6m for cogeneration capacity 32 MW – District Heating – Pleven
  15. Development of technical documentation for permission to make changes to the design of a StBK container for transportation and storage of processed radioactive waste of Kozloduy NPP
  16. Development of an updated strategy for decommissioning of Units 1 to 4.

2004-2005

  1. Participation in the modernization program of units 5 and 6 of the Kozloduy NPP, subcontracts with the companies from the Kozloduy Nuclear Power Plant and Westinghouse – over 25 main measures such as:
    • Increasing the reliability of the safety valves of the steam generators (planning and design of the complete replacement);
    • Installation of an automatic cold-pressurization protection device (study, analysis, design);
    • Installation of hydrogen detection and monitoring systems;
    • Filter system for reducing pressure in the containment;
    • Diagnostic systems (examples – leak detection systems, migratory bodies, fatigue monitoring systems – KUS, FLUS, FAMOS);
    • Implementation of a system for monitoring critical parameters in emergency and post-accident situations (SPDS, PAMS);
    • Conducting an analysis of the consequences of internal hazards (examples – internal flooding, rupture of high-energy pipelines)
    • Classification of safety, seismicity and quality of systems and equipment of units 5 and 6;
    • Updated Technical Safety Case (TSC), Bringing the safety analyses of the TSC in line with international practice, etc.
  2. Implementation of a Decommissioning Management System – units 1 and 2 – subcontractor of EWN.
  3. Assessment of some safety issues of reactors WWER-440/230 and WWER-1000/320 – contract with GRS, Germany.
  4. Participation in the development of Severe Accident Management Manuals for units 3&4 and for units 5&6 of Kozloduy NPP (preparation of all severe accident analyses necessary for the project).
  5. Preliminary safety justification for the reconstruction of units 1 and 2 (jointly with RISK Engineering AD).
  6. Project Management and Engineering Services Unit at Kozloduy NPP for tasks on decommissioning of units 1 and 2 (Subcontractor of BNFL/EDF).
  7. Analysis of dependent failures in case of rupture of feedwater pipelines in the containment of units 3 and 4 of Kozloduy NPP.
  8. Thermohydraulic analyses of LOCA DN 200 mm and LOCA 2xDN 500 mm with consideration of the blockages for filling the RAP from the BAP and changing the threshold of activation of the blockages for opening the pressure valves of the PAZ – Kozloduy NPP units 3 and 4.
  9. Filter system for pressure reduction for units 3 and 4 of Kozloduy NPP – subcontractor of FANP Germany
  10. Installation of hydrogen detection and monitoring systems for units 3 and 4 of Kozloduy NPP – subcontractor of FANP Germany
  11. Analysis of the isolation of the systems connected to the I circuit of units 3 and 4
  12. Detailed design for physical separation of the equipment from the safety systems in the boron assemblies of units 3 and 4 of Kozloduy NPP

2002-2003

  1. Justification and detailed design of a system for gas removal from the reactor and measurement of the reactor level, under normal operating conditions, design basis and beyond-design basis accidents, in cases of formation of steam-gas spaces under the reactor cover – units 3 and 4 of Kozloduy NPP.
  2. Determination of critical safety functions and their degradation levels for units 5 and 6 of Kozloduy NPP.
  3. Organization of a Project Management and Engineering Services Unit at Kozloduy NPP for decommissioning tasks of units 1 and 2 (Subcontractor of BNFL/EDF).
  4. Detailed design for additional feedwater check valves for the steam generators in the BPG – units 3 and 4.
  5. Justification of conservative calculations of a LOCA accident Du 500, for the purposes of the safety justification of units 3 and 4 of Kozloduy NPP (jointly with ENCONET).
  6. Detailed design for a FLUS leak detection system for units 3 and 4.
  7. Expert assessment of radiological consequences of accidents with LOCA on units 3 and 4, after the installation of a jet-vortex condenser (JVC).
  8. Research and detailed design of providing protection for the RAP when using the scheme for its filling by the PAZ in different modes of the RU.
  9. Thermo-hydraulic analysis of a small leak from the primary circuit of unit 3 and development of a project for modernization of the interlocks of the ventilation systems serving the BPG of units 3 and 4.

2000-2002

  • Analysis of the applicability of the system for monitoring the density of the main pipelines in the primary circuit, qualified for the purposes of LBB”.
  • Thermohydraulic analysis of transient processes for a simulator with a mock-up of the control panel with a prototype unit 6 of the Kozloduy NPP.
  • Detailed design for the FAMOS fatigue monitoring system of unit 4.
  • Detailed design for decommissioning of units 1 and 2 – subcontractor of Belgatom and EWN.
  • Studies on WWER-440/230 – contract with GRS, Germany.
  • Detailed design for replacing feedwater regulators of units 3 and 4 with a new steam generator level control system.
  • Participation in the “Assessment of the residual resource of units 1-4 of the Kozloduy NPP” – subcontracts with the companies of the CONSART consortium (Siemens and Atomstroyexport).
  • Participation in “Reconstruction of the Accident Localization System (ALS) of Units 3 and 4 of Kozloduy NPP”, based on a jet-vortex condenser – subcontract with Atomstroyexport.
  • Independent assessment of the safety status of Units 3 and 4 – subcontractor of ENCONET.
  • Development of a technical safety justification (TSF) of Units 3 and 4 (jointly with RISK Engineering AD).
  • Working design for a fatigue monitoring system FAMOS of Unit 3.

1998-1999

  1. Project for modernization of a full-scale simulator at the VUJE training center, Trnava: development of a model of the unit for the RELAP5 R/T program for simulating processes in real time.
  2. Review of the Safety Enhancement Program of Units 1-4 of the NPP “Kozloduy”.
  3. Emergency analyses of the processes in the I and II circuits and the sealed rooms of units 1-4 of the Kozloduy NPP in the event of a rupture of a DN 80 gas pipeline (purge line). Evaluation of the procedure for the actions of the operating personnel.
  4. Analysis of rupture of high-energy pipelines in the boron unit in connection with the installation of the DSAP on units 3 and 4.
  5. Preparation of initial data for the “Main engineering phase” of the modernization program for units 5 and 6 of the Kozloduy NPP.
  6. Expertise of the working project “Replacement of safety valves of the equipment of the II circuit of unit 2 of the Kozloduy NPP”.
  7. Expertise of the development of the RNC “Analysis of large leaks and reliability analysis of the pipelines of the first circuit of power units 1-4 of the Kozloduy NPP”.
  8. Participation in the development of the “Report of the Republic of Bulgaria on the Implementation of the Convention on Nuclear Safety”.
  9. Analyses for the purposes of validation of emergency instructions for units 1-4 of the Kozloduy NPP.
  10. Participation in the Basic Engineering Phase of the modernization program for units 5 and 6 of the Kozloduy NPP – subcontracts with the companies from the Kozloduy EKK and Westinghouse.
  11. Working project for “Replacement of main steam pipelines from EK14 to TG14” for TR “Sofia-Iztok.
  12. Working project “Replacement of main steam pipelines of TG 4” and inspection and adjustment of the support-suspension system of main steam pipelines of K 1 to K 6 for TPP Maritsa-Iztok 1
  13. Expertise of the development “Analysis and justification of safety” revision 3, part 1, of the Additional system for emergency feed of steam generators of units 3 and 4 (DSAPP-3,4) of NPP “Kozloduy”
  14. Multifunctional simulator for VVER 230 at NPP “Kozloduy” – organization of pilot courses and programs – subcontractor under the project Tasis/Phare Nuclear Safety No. PH 2.01/94- U2.04/94-R2.15/94
  15. Contract for exclusive representative in Bulgaria of the German company svt BRANDSCHUTZ – for the products “SVT PYRO-SAFE”.

Current tasks

  1. “Modernization of the systems for measuring the activity of discharges (SIAI) through the ventilation pipes of Kozloduy NPP, units 5 and 6, with a normal range: 5.6XQ43, 5.6XQ44 and 0XQ47”.
  2. “Design, supply and installation of a functional unit consisting of a minimum of a pulse valve, a pulse valve with an electric motor and a solenoid valve, of the safety valves of the steam generators”
  3. Replacement of the upper level software and technical complex (PTK-VU) of the internal reactor control system (IRC) of unit 5 at Kozloduy NPP and supply of the APA-H program complex (ALPHA-H, PHOENIX-H, ANC-H).
  4. “Modernization of two RTM860TS whole-body measurement monitors with Two Step Exit II monitors in rooms B337 and B340”.
  5. “Development of safety analyses for licensing and implementation of an alternative type of nuclear fuel at Unit 5 of Kozloduy NPP at 3120MW operation”
  6. “Replacement of RT cabinets, panels with normalizing converters, cross cabinets and power supply panels of KIP sensors on I and II circuits” at Kozloduy NPP, Units 5 and 6
  7. “Update of probabilistic safety analysis (VAB), level 1 for full power, for low power and for a stopped reactor at Units 5 and 6 and expansion of its scope taking into account the internal and external hazards characteristic of the Kozloduy NPP site and the influence between the units”
  8. “Modernization of the neutron flux control equipment (AFCO) at Kozloduy NPP, Units 5 and 6”
  9. “Migration of the computer information management system (CIMS) “Ovation” at 5 and Unit 6 at Kozloduy NPP to the latest generation platform “Ovation”, including integration of a visual indication system for safety parameters (SPDS), symptom-based emergency instructions (SBI) and partial modernization of a full-scale simulator PMS-1000”
  10. “Design, delivery, installation and commissioning of energy-efficient industrial lighting at the Kozloduy NPP site, units 5 and 6”
  11. Reconstruction of existing lighting installations for working and emergency lighting of the spent nuclear fuel room No. 201 and the spent nuclear fuel unloading room No. 202 in the “Spent Fuel Storage” building – Kozloduy NPP with energy-efficient.
  12. “Design of the topic: Filtering of imbalance waters from SVO-5 (cleaning the steam generator purge) with a filter for retaining granular material (trap filter)”

2019-2022

  1. “Design, delivery, installation and commissioning of emergency working and emergency evacuation lighting in buildings of Kozloduy NPP, units 5 and 6, with LED lighting fixtures”
  2. “Modernization of humps with an optimized profile for steam distribution mechanisms from the allocation of Turbogenerator 9 (TG-9), allowing for a larger stroke of the control valves”, Kozloduy NPP Unit 5
  3. “Update of “Technical and economic analysis for management of the infrastructure of general plant facilities and buildings, which is independent of units 1 to 4 of Kozloduy NPP. Part: Analysis for fluid supply”, related to the displacement of technical water pipelines group A from the second and third systems of unit 4 outside the Engine Room”
  4. Development of Regulatory Guide for deterministic safety analysis of nuclear power plants with pressurized water reactors.
  5. Project Management and Engineering Services Group at SE “RAO” for consulting services for tasks on decommissioning of units 1 to 4 and site selection, design, safety assessment, construction and commissioning of the National Radioactive Waste Repository (Subcontractor of a Consortium with Empresarios Agrupados and Nuvia)
  6. Engineering support for the Decommissioning and Radioactive Waste (RAW) Management Program of ISPRA (Italy)
  7. Development of a feasibility study for licensing and implementation of an advanced type of nuclear fuel for units 5 and 6 of Kozloduy NPP EAD operating at 3120 MW (Westinghouse Subcontractor)
  8. Expertise on selected aspects of the Periodic Safety Review (PSR) of Kozloduy NPP Unit 6
  9. “Development of design documentation for modernization of the control scheme for regulating flaps of Turbogenerator 9 (TG-9) at Kozloduy NPP, Unit 5”
  10. “Design of technological pipelines located on existing trestles built on the territory of Mondi-Stamboliyski EAD”
  11. “Expertise on selected reports from Stage 2 of the project for extending the service life of Unit 6 of Kozloduy NPP, related to substantiation of the possibility of safe operation of the reactor vessel and part of the main building structures”
  12. “Assessment of the compliance of the interim safety analysis report of Belene NPP with the current safety requirements for nuclear power plants”
  13. Modernization of the existing systems for technical diagnostics of main circulation pumps GCN-195 M, Kozloduy NPP, units 5 and 6
  14. “Development and implementation of a project for installation and replacement of displacement limiters, hydraulic shock absorbers and springs with roller blocks on pipelines 5TQ12,24,33; 5TX11,12,13,14; 5YP and 5YT”, (systems for emergency and planned cooling, emergency feedwater, volume compensator, hydraulic accumulators) Kozloduy NPP, Unit 5
  15. “Project on the topic: Replacement of a compressed air pipeline for testing systems 5.6 ХА (hermetic volumes of units 5 and 6 at Kozloduy NPP) for density in Section Х, K-9 to 5.6TP90S01”
  16. “Calculation and verification of seismic resistance of a pipeline from system 5.6 RY (steam generator purge), when replacing safety valves DN150”
  17. “Assessment of the compliance of the interim report for the analysis of the safety of Belene NPP with the current regulatory requirements for radiation protection”
  18. Preparation of “Calculations for the justification of the safety for the packaging of radioactive waste (RAW) with an activity greater than 0.1 TBq in reinforced concrete containers StBK during RAW management at the Joint Venture “PHRAW – Novi Han”

2018

  1. Project Management and Engineering Services Group at the State Enterprise “RAO” for consultancy services for tasks related to decommissioning of units 1 to 4 and site selection, design, safety assessment, construction and commissioning of the National Radioactive Waste Repository (Subcontractor of a Consortium with Empresarios Agrupados and Nuvia)
  2. Replacement of automatic gas analyzers on power transformers 9GC01, 9GC02, 5BT01, 5BT02, BT05 and BT06 at Kozloduy NPP
  3. Engineering support for the Decommissioning and RAW Management Program of ISPRA (Italy)
  4. Analysis of the melt propagation during the off-shell phase of a severe accident for VVER-1000
  5. Development of a Regulatory Guide for the Management of the Aging of Structures, Systems and Components in Nuclear Power Plants (client: Nuclear Regulatory Agency – NRA)
  6. Preparation of an analysis of the possibilities for storing spent nuclear fuel from VVER-1000 reactors at the Kozloduy NPP site
  7. Implementation of repair and electrical installation activities on main and auxiliary equipment and systems of nuclear power units 5 and 6 of Kozloduy NPP during and/or related to the planned annual repairs in 2018 – separate item No. 1
  8. Development of design documentation for installation of dampers on fresh steam pipelines for unit 5 of Kozloduy NPP
  9. Working projects for modernization of systems at Mondi Stamboliyski EAD

2016-2017

  1. Project Management and Engineering Services Group at SE RAO for consulting services for tasks on decommissioning of units 1 ÷ 4 and site selection, design, safety assessment, construction and commissioning of the National Repository for radioactive waste (Subcontractor of Consortium with Empresarios Agrupados and Nuvia)
  2. Installation of new heat exchangers TS10W01,02,03 (from hydrogen afterburning system) and shut-off and drainage fittings on the lines of the technical water system, providing the possibility of shut-off and flushing of the heat exchangers at Kozloduy NPP
  3. Design and implementation of a system for heating and cooling the metal of the water chambers and tube sheets of high-pressure chamber-type heaters (PVN-K) for Kozloduy NPP
  4. Modernization of control and management systems of Special Building 3 (SK-3) of Kozloduy NPP (Subcontractor of Westinghouse)
  5. Project for installation of L-shaped crane 5.6YW00E09 in the central hall, in the area of the Main Circulation Pumps 5.6YD10(40) at Kozloduy NPP
  6. Expertise of the technical documentation for unit 6 under the project: “Development of an advanced nuclear fuel cycle and justification of the safe operation of units 5 and 6 of Kozloduy NPP EAD with modified nuclear fuel with a capacity of 3120 MW”
  7. Investigation of the operating modes of the HVAC system in the Radioactive Waste Processing Plant (RWP) at the Kozloduy NPP site
  8. Design of steam and condensate pipelines serving the blowing system of the biofuel combustion boiler at Mondi Stamboliyski EAD
  9. Design of pipelines for PM2 paper machine at Mondi Stamboliyski EAD
  10. Design of a new pipeline for draining High Pressure Preheaters (HPH) at idle speed of the turbogenerator (TG) at low power up to 100 MW for units 5 and 6 at Kozloduy NPP
  11. Design of a new line from the steam generator purge system to the technological condenser for units 5 and 6 at Kozloduy NPP
  12. Performing a hydrodynamic check of foreign body migration in the cooling system of the 10GQ generator at Kozloduy NPP
  13. Computational check of underground pipeline No. 5 from the technical water system for responsible users (QF) at Kozloduy NPP
  14. Design of an overpass for moving diesel units in a horizontal direction at EUROMETAL
  15. Author’s supervision and technical assistance during the implementation of construction and installation works (C&I) of the investment project “Design and implementation of a system for heating and cooling the metal of the water chambers and tube sheets of high-pressure chamber-type heaters (PVN-K) at the NPP “Kozloduy”
  16. Implementation of repair and electrical installation activities on main and auxiliary equipment and systems of nuclear power units 5 and 6 during and/or related to the planned annual repairs in 2016. at Kozloduy NPP
  17. Delivery of repairable check valves for emergency feedwater system at Kozloduy NPP
  18. Reconstruction of hydrazine hydrate storage facility at Kozloduy NPP
  19. Strength analysis of tube bundle of high pressure heaters PVN–6 and PVN–7 at AES Galabovo TPP
  20. Design of a new expansion tank of turbogenerators TG–9 and 10 at Kozloduy NPP
  21. Preparation of an analysis of the possibilities for temporary storage of radioactive waste (RAW) resulting from the decommissioning activities of units 1-4 of Kozloduy NPP on the territory of the extension of the dry storage facility for spent nuclear fuel (HSSFSF Stage Ia)
  22. Design of a new pipeline for additional drainage of the outlet pipes of pipelines 5SA10 to 5RB10,20,30,40W01 in front of 5SH13S03,04 to 5SD11, which will ensure sufficient throughput for their normal drainage during the deployment of 9TG at Kozloduy NPP
  23. Design of steam pipelines 11b in PM2 at Mondi Stamboliyski EAD
  24. Modification and seismic strengthening of the metal structure of cranes 5,6UQ00E01 at Kozloduy NPP
  25. Rerouting of the pipelines for supplying condensate from the steam superheater separator SPP to the CN (5,6 SH31, 32S01) at Kozloduy NPP
  26. Expertise of selected reports from Stage 2 of the project for extending the operational life of Unit 5 of Kozloduy NPP, related to substantiation of the possibility of safe operation of the reactor vessel and part of the main building structures
  27. Additional analysis for assessing the behavior of “TVSA” and “TVSA-12” type cartridges with mixed fuel loadings under the conditions of expected operational events at Kozloduy NPP
  28. Design of technological pipelines of the system for capturing and transporting turpentine in the workshop: Cellulose of “Mondi Stamboliyski” EAD
  29. Reconstruction of the steam pipeline “Drainage of sharp steam” at AES “Galubovo”
  30. Performance of strength testing of membrane-type seam joints of heat exchangers for emergency and planned cooling of the primary circuit 5TQ10,20,30W01 at Kozloduy NPP
  31. Design of a new line after 5RY10S32;5RY10S33 and 6RY40S01;6RY40S02 at the entrance to 5(6)RR20W01 after 5(6)RN11S20” at Kozloduy NPP

2014-2015

  1. Project Management and Engineering Services Group at SE RAW for consultancy services for decommissioning tasks of units 1 to 4 and site selection, design, safety assessment, construction and commissioning location of the National Radioactive Waste Repository (Subcontractor of a Consortium with Empresarios Agrupados and Nuvia)
  2. Design and implementation of a system for heating and cooling the metal of the water chambers and tube sheets of high-pressure chamber-type heaters (PVN-K).
  3. Project for Modernization of the gas blowdown systems of units 5 and 6 of the Kozloduy NPP..
  4. Report on the safety analysis of a spent nuclear fuel repository (SRF) with “underwater” storage technology (SRF OAB) and Report on the safety assessment of a SRF with “underwater” storage technology (SRF OAB).
  5. Development of a detailed design for “Expansion of a coke oven gas system in Duisburg Huckingen” (Germany) for Enemona as the main contractor.
  6. Modernization of a radiation control system in a spent nuclear fuel repository (SRF), design part – subcontractor of Energo Service.
  7. Assessment of the capabilities of spray pools (BB) to preserve and maintain a sustainable material energy balance as thermal facilities, ensuring reliable cooling of the core under extreme weather conditions, Kozloduy NPP, units 5 and 6
  8. Specific analyses of the barriers to the spread of radioactive products during operation of the 3120 MW reactor installation, Kozloduy NPP, units 5 and 6.
  9. Modernization of control and management systems of Special Building 3 (SC-3)” (Westinghouse subcontractor).
  10. Modernization of the control of radiation monitoring monitors type RTM860TS and delivery of monitors for radioactive contamination of the body with gamma and beta detectors.
  11. Design of a new support and suspension system for the pipelines in the trestles from SC-3 to units 5 and 6 of Kozloduy NPP.
  12. Detailed design for the installation of new pipelines for CNCG gases and condensate on trestle 1 and Conceptual design for pipelines on trestle 1 to a new HVO in Mondi EAD.
  13. Detailed design for installation of new heat exchangers TS10W01, 02, 03 and shut-off and drainage fittings on the lines of the technical water system, providing the possibility of shut-off and flushing of TS10W01 – 03.
  14. Performing verification calculations for the behavior of the compensator of the collector of 6 steam collector of TG-9 subject to repair, Kozloduy NPP, Unit 5

2011-2013

  1. Project Management and Engineering Services Unit at Kozloduy NPP for tasks related to decommissioning of Units 1 and 2
  2. Project Management and Engineering Services Group at SE “RAO” for consultancy services for site selection, design, safety assessment, construction and commissioning of the National Radioactive Waste Repository (Consortium with Empresarios Agrupados and VT Nuclear Services)
  3. Replacement of the main steam pipeline of TG№4 from the gate valve to the flange connections of the High Pressure Cylinder (HPC) at TPP “Sofia Iztok”
  4. Preparation of a detailed design for a new route of the steam pipeline after 5, 6RL21,22W01,02 on the territory of “Kozloduy NPP” EAD”
  5. Conducting Author’s Supervision and providing Technical Assistance during Construction and Demolition under a project by “Enpro Consult” OOD, city of Sofia on the topic: “Change of the scheme for supplying HOV to electrolyzers ZH71, 72 and of the existing scheme for air conditioning of their premises with water from the 0UX31H01 system with 0UW33D01
  6. Carrying out a seismic resistance check of the mechanical structure of the sensors for wide-range thermal control of the reactor vessel of reactors 5 and 6 of Kozloduy NPP
  7. Design of a detachable connection of the pressure control pipeline after the first stage of the sealing block of the Main Circulation Pumps (GCP), units 5 and 6 of Kozloduy NPP
  8. Conducting “stress tests” as a targeted reassessment of the safety reserves of the facilities at “Kozloduy NPP” EAD in the event of catastrophic natural events leading to a severe accident:
  9. NPRO as the developer of lot 5 and Westinghouse as a subcontractor, reviewing the report
  10. estinghouse as developer of Lot 6 and ENPRO CONSULT as subcontractor, performing report review
  11. Design of additional supports for the recirculation pipeline of the emergency feedwater system 5.6ТХ40D01, units 5 and 6 of Kozloduy NPP
  12. Feasibility study of the construction of a new nuclear power plant at the Kozloduy NPP site (subcontractor of Westinghouse)
  13. Design of overpass 1 in Mondi EAD, Stamboliyski for Enemona as the main contractor.
  14. Analysis and assessment of the radiation situation in the premises of the building, Block Control Panel (BCP) and Backup Control Panel (RCP), units 5 and 6 of Kozloduy NPP
  15. Investigation of the possibility and preparation of a conceptual design for an autonomous cooling system of the compartments in a spent nuclear fuel storage facility (SNF)

2009-2010

  1. Expertise of selected design solutions proposed by the technical design of Belene NPP
  2. Analysis of the radiological consequences after a design accident large leak from 1 loop with DN 850 in the volume of the containment and Reactivity and thermohydraulic analysis of a postulated initial event – release of regu
  3. Analysis to prove the possibility of operation of fast-acting reduction devices to the atmosphere BRU-A-5,6TX50, 60, 70, 80S05 with water and two-phase (steam-water) mixture (subcontractor of Atomtoploproekt for the part on models for strength verification and strength calculations
  4. Assessment of inaccuracies in predicting neutron and thermo-hydraulic parameters for selected accidents of VVER-1000 (contract with IAEA)
  5. Study of possible ways and means, design and implementation for alternative feed of steam generators in case of an accident with complete loss of alternating current sources of units 5 and 6 of Kozloduy NPP EAD

2007-2009

  1. Project Management and Engineering Services Unit at Kozloduy NPP for tasks on decommissioning of units 1 and 2. Important projects implemented by ENPRO CONSULT within the Project Management Unit are:
    • Updated the strategy for decommissioning of Units 1 to 4.
    • Development of a Decommissioning Plan for Units 1 and 2.
    • Technical design and supply of the necessary equipment for organizing Material Size Reduction Areas in the Machine Room, Units 1-4 at Kozloduy NPP.
    • Technical design and supply of the necessary equipment and materials for installation of new water pipelines between technical water, Group “B” – Units 3,4 with technical water system of Units 1,2.
    • Connection between pipelines Du400 and technical water system, Group “B” – Units 3&4 – and technical water system – Units 1&2
    • Development of plate heat exchangers for backup of heat exchangers 1, 2HWB-A.
    • Development of a Safety Analysis Report for Decommissioning.
    • Assessment of the residual resource of systems, components, buildings that remain in use during decommissioning.
    • Development of a Safety Analysis Report for the operation of Units 1 and 2 of Kozloduy NPP as a RAW Management Facility through the Specialized Division “Decommissioning – Kozloduy”
  2. Development of a project for a comprehensive radiation survey of Units 1 and 2 of “Kozloduy NPP” EAD – subcontractor of EWN.
  3. Independent expertise and justification of the safe operation of Unit 5 of Kozloduy NPP during non-design operation of the drives of the control and protection system (CPS) SHEM-3
  4. Draft of the third national report of the Republic of Bulgaria on the implementation of the obligations arising from the Unified Convention on the Safety of Spent Fuel Management and on the Safety of Radioactive Waste Management”
  5. Assessment of the residual resource of systems and facilities for the storage of spent nuclear fuel (SNF) and of the technological systems in the spent nuclear fuel repository (SNF) of Kozloduy NPP
  6. “Development of a Program for the study, analysis and assessment of the mechanical characteristics of pipelines group “B” of Unit 6 of Kozloduy NPP after 100,000 hours of operation” (subcontractor of AtomToploproekt)
  7. Implementation of an additional possibility for emergency filling of spent nuclear fuel pools BOK-V,G in case of rupture of pipelines connected to BOK-V,G, which provide cooling and water level maintenance, necessary for the safe storage of spent nuclear fuel (SNF)
  8. Increasing the seismic resistance of pipelines providing cooling and water level maintenance in spent nuclear fuel pools BOK-V,G
  9. Design of thermal insulation for equipment and pipelines of Unit 1 of Maritsa East 2 TPP
  10. Preparation of a detailed design for the construction of a temporary scheme with a support and suspension system, necessary for performing steam purging of BL.3 and BL.4 and carrying out author’s supervision during the implementation
  11. Detailed design for the repair of a boiler-utilizer at an incinerator for the incineration of hazardous hospital waste

2005-2006

  1. Participation in the modernization program of units 5 and 6 of Kozloduy NPP, subcontract with Framatom – Updated Technical Safety Case (ATSC).
  2. Project Management and Engineering Services Unit at Kozloduy NPP for decommissioning tasks of units 1 and 2 (Subcontractor of BNFL/EDF).
  3. Development of a Technical Design for Radioactive Waste Processing and Storage Facilities for the Novi Khan-2 National Repository, EuropeAid/116740/D/SV/BG (together with Empresarios Agrupados, Spain).
  4. Study of the power reduction regimes when switching off two of the two turbo-feed pumps of units 5 and 6 at Kozloduy NPP – contract with GRS, Germany.
  5. Development of an additional package to the technical safety justification (TSF) of units 3 and 4 of the Kozloduy NPP and justification of a large leak mode LOCA 2xDu 500 as a design basis accident.
  6. Analysis and justification of the need to assess the residual resource of the building structures, systems, facilities and components in a spent nuclear fuel storage facility (SNF).
  7. Increasing the operational reliability of the main steam pipeline “superheated steam” in the section Outlet collector of KPP-II – tee junction “balance main steam pipeline – KA-9, KA-12, KA-10” – TPP “Maritsa Iztok 2”.
  8. Detailed design for installation and connection of a new ignition reduction cooling device (RROU) of EC 1 and EC 2” for Sofia-East Thermal Power Plant.
  9. Technical solution and Detailed design for strengthening the pipelines necessary for performing steam purging of unit 1 and unit 2 of Maritsa East 2 TPP
  10. Performing strength calculation of transition to 5ТQ40S08 and 5ТQ40S09 – units 5 and 6 of Kozloduy NPP (emergency and planned primary circuit cooling system)
  11. Design of a bypass pipeline of the UM system in a heat distribution station – Kozloduy NPP
  12. Detailed design of a new support and suspension system of oil pipelines from SA51 to SC51D41,42 and from SA52 to SC52D41,42 – Units 5 and 6 of Kozloduy NPP
  13. Replacement of control valves 5RN81S01, 5RN82S01, 5RN91S01, 5RN92S01, 5RN11S02, 5RN12S02, 5RN21S06, 5RN22S06 of the RN system – Units 5 and 6 of Kozloduy NPP
  14. Detailed design of a steel chimney with H+38.6m for cogeneration capacity 32 MW – District Heating – Pleven
  15. Development of technical documentation for permission to make changes to the design of a StBK container for transportation and storage of processed radioactive waste of Kozloduy NPP
  16. Development of an updated strategy for decommissioning of Units 1 to 4.

2004-2005

  1. Participation in the modernization program of units 5 and 6 of the Kozloduy NPP, subcontracts with the companies from the Kozloduy Nuclear Power Plant and Westinghouse – over 25 main measures such as:
    • Increasing the reliability of the safety valves of the steam generators (planning and design of the complete replacement);
    • Installation of an automatic cold-pressurization protection device (study, analysis, design);
    • Installation of hydrogen detection and monitoring systems;
    • Filter system for reducing pressure in the containment;
    • Diagnostic systems (examples – leak detection systems, migratory bodies, fatigue monitoring systems – KUS, FLUS, FAMOS);
    • Implementation of a system for monitoring critical parameters in emergency and post-accident situations (SPDS, PAMS);
    • Conducting an analysis of the consequences of internal hazards (examples – internal flooding, rupture of high-energy pipelines)
    • Classification of safety, seismicity and quality of systems and equipment of units 5 and 6;
    • Updated Technical Safety Case (TSC), Bringing the safety analyses of the TSC in line with international practice, etc.
  2. Implementation of a Decommissioning Management System – units 1 and 2 – subcontractor of EWN.
  3. Assessment of some safety issues of reactors WWER-440/230 and WWER-1000/320 – contract with GRS, Germany.
  4. Participation in the development of Severe Accident Management Manuals for units 3&4 and for units 5&6 of Kozloduy NPP (preparation of all severe accident analyses necessary for the project).
  5. Preliminary safety justification for the reconstruction of units 1 and 2 (jointly with RISK Engineering AD).
  6. Project Management and Engineering Services Unit at Kozloduy NPP for tasks on decommissioning of units 1 and 2 (Subcontractor of BNFL/EDF).
  7. Analysis of dependent failures in case of rupture of feedwater pipelines in the containment of units 3 and 4 of Kozloduy NPP.
  8. Thermohydraulic analyses of LOCA DN 200 mm and LOCA 2xDN 500 mm with consideration of the blockages for filling the RAP from the BAP and changing the threshold of activation of the blockages for opening the pressure valves of the PAZ – Kozloduy NPP units 3 and 4.
  9. Filter system for pressure reduction for units 3 and 4 of Kozloduy NPP – subcontractor of FANP Germany
  10. Installation of hydrogen detection and monitoring systems for units 3 and 4 of Kozloduy NPP – subcontractor of FANP Germany
  11. Analysis of the isolation of the systems connected to the I circuit of units 3 and 4
  12. Detailed design for physical separation of the equipment from the safety systems in the boron assemblies of units 3 and 4 of Kozloduy NPP

2002-2003

  1. Justification and detailed design of a system for gas removal from the reactor and measurement of the reactor level, under normal operating conditions, design basis and beyond-design basis accidents, in cases of formation of steam-gas spaces under the reactor cover – units 3 and 4 of Kozloduy NPP.
  2. Determination of critical safety functions and their degradation levels for units 5 and 6 of Kozloduy NPP.
  3. Organization of a Project Management and Engineering Services Unit at Kozloduy NPP for decommissioning tasks of units 1 and 2 (Subcontractor of BNFL/EDF).
  4. Detailed design for additional feedwater check valves for the steam generators in the BPG – units 3 and 4.
  5. Justification of conservative calculations of a LOCA accident Du 500, for the purposes of the safety justification of units 3 and 4 of Kozloduy NPP (jointly with ENCONET).
  6. Detailed design for a FLUS leak detection system for units 3 and 4.
  7. Expert assessment of radiological consequences of accidents with LOCA on units 3 and 4, after the installation of a jet-vortex condenser (JVC).
  8. Research and detailed design of providing protection for the RAP when using the scheme for its filling by the PAZ in different modes of the RU.
  9. Thermo-hydraulic analysis of a small leak from the primary circuit of unit 3 and development of a project for modernization of the interlocks of the ventilation systems serving the BPG of units 3 and 4.

2000-2002

  • Analysis of the applicability of the system for monitoring the density of the main pipelines in the primary circuit, qualified for the purposes of LBB”.
  • Thermohydraulic analysis of transient processes for a simulator with a mock-up of the control panel with a prototype unit 6 of the Kozloduy NPP.
  • Detailed design for the FAMOS fatigue monitoring system of unit 4.
  • Detailed design for decommissioning of units 1 and 2 – subcontractor of Belgatom and EWN.
  • Studies on WWER-440/230 – contract with GRS, Germany.
  • Detailed design for replacing feedwater regulators of units 3 and 4 with a new steam generator level control system.
  • Participation in the “Assessment of the residual resource of units 1-4 of the Kozloduy NPP” – subcontracts with the companies of the CONSART consortium (Siemens and Atomstroyexport).
  • Participation in “Reconstruction of the Accident Localization System (ALS) of Units 3 and 4 of Kozloduy NPP”, based on a jet-vortex condenser – subcontract with Atomstroyexport.
  • Independent assessment of the safety status of Units 3 and 4 – subcontractor of ENCONET.
  • Development of a technical safety justification (TSF) of Units 3 and 4 (jointly with RISK Engineering AD).
  • Working design for a fatigue monitoring system FAMOS of Unit 3.

1998-1999

  1. Project for modernization of a full-scale simulator at the VUJE training center, Trnava: development of a model of the unit for the RELAP5 R/T program for simulating processes in real time.
  2. Review of the Safety Enhancement Program of Units 1-4 of the NPP “Kozloduy”.
  3. Emergency analyses of the processes in the I and II circuits and the sealed rooms of units 1-4 of the Kozloduy NPP in the event of a rupture of a DN 80 gas pipeline (purge line). Evaluation of the procedure for the actions of the operating personnel.
  4. Analysis of rupture of high-energy pipelines in the boron unit in connection with the installation of the DSAP on units 3 and 4.
  5. Preparation of initial data for the “Main engineering phase” of the modernization program for units 5 and 6 of the Kozloduy NPP.
  6. Expertise of the working project “Replacement of safety valves of the equipment of the II circuit of unit 2 of the Kozloduy NPP”.
  7. Expertise of the development of the RNC “Analysis of large leaks and reliability analysis of the pipelines of the first circuit of power units 1-4 of the Kozloduy NPP”.
  8. Participation in the development of the “Report of the Republic of Bulgaria on the Implementation of the Convention on Nuclear Safety”.
  9. Analyses for the purposes of validation of emergency instructions for units 1-4 of the Kozloduy NPP.
  10. Participation in the Basic Engineering Phase of the modernization program for units 5 and 6 of the Kozloduy NPP – subcontracts with the companies from the Kozloduy EKK and Westinghouse.
  11. Working project for “Replacement of main steam pipelines from EK14 to TG14” for TR “Sofia-Iztok.
  12. Working project “Replacement of main steam pipelines of TG 4” and inspection and adjustment of the support-suspension system of main steam pipelines of K 1 to K 6 for TPP Maritsa-Iztok 1
  13. Expertise of the development “Analysis and justification of safety” revision 3, part 1, of the Additional system for emergency feed of steam generators of units 3 and 4 (DSAPP-3,4) of NPP “Kozloduy”
  14. Multifunctional simulator for VVER 230 at NPP “Kozloduy” – organization of pilot courses and programs – subcontractor under the project Tasis/Phare Nuclear Safety No. PH 2.01/94- U2.04/94-R2.15/94
  15. Contract for exclusive representative in Bulgaria of the German company svt BRANDSCHUTZ – for the products “SVT PYRO-SAFE”.

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See what you will get if you intern with us:

Training from some of the best professionals in the energy industry

Development of skills through a variety of tasks and projects

Working with modern technologies and innovative methods

Spirit of cooperation and support in close-knit teams

Individual program

Constant feedback from a personal mentor

Monthly remuneration

Opportunity for a longer-term commitment to the company

Requirements for candidates:

– To be students in the 2nd, 3rd and 4th year, studying the specialty "Thermal Power Engineering or Nuclear Power Engineering"

– To have a minimum GPA of 4.00 in the last semester;

– To show high motivation and desire for development, as well as high personal discipline.

Application documents

  1. Motivation letter for applying for the program, for development in the relevant field, interests and extracurricular activities/projects and professional experience.
  2. Certificate from the Technical University - city Sofia or Sofia University "Kliment Ohridski" that for the current academic year the student is enrolled in a full-time form of study in one of the specified programs.
  3. A copy of a bachelor's degree diploma or a certificate of completion of a degree with a calculated average grade point average. For applicants after the first semester of the master's program, an additional certificate with a calculated average grade point average for the semester before application is required.

Only candidates approved on the basis of documents will be invited to an interview.

ENPRO Consult OOD informs you that some of the voluntarily provided data are personal and fall under a special protection regime within the meaning of Regulation 2016/679 and the Personal Data Protection Act. The personal data provided will be processed to achieve legally permitted purposes related to this internship, as well as to realize the legitimate interests of the personal data administrator. ENPRO Consult OOD processes, stores and uses the voluntarily provided personal data within the legally regulated deadlines, ensuring their security and confidentiality.

Thank you for your interest and we look forward to your applications.

Certificates