Project Engineering

Modernization of steam generators and pressurizers

NPP Equipment

NPP Service and Maintenance

Outage maintenance services, NPP spare parts, troubleshooting

We design refurbishments for VVER-440 and VVER-1000 steam generators and pressurizers.

We provide engineering and design services to resolve technical issues.

We carry out assembly and disassembly, repairs of generic faults and defects, and preparation for inspections.

We arrange the manufacture of spare parts and the supply of semi-finished products for steam generators and pressurizers.

Nuclear Power Industry Supplier

About MOVYKO JE

Our company, MOVYKO JE was established in 2020 with a focus on providing services to nuclear power plants and manufacturing spare parts and repair components for VVER-type nuclear power plants.

Our key personnel have been working continuously in the nuclear power industry since 1989. Our team includes design engineers, structural engineers, analysts, welders, and assembly technicians who carry out work directly on nuclear power plant units. This team of experienced professionals is continuously supplemented by younger colleagues, particularly new machinists and assembly technicians.

Our expertise is rooted in years of practical experience and the ability to integrate project planning, design, manufacturing, and installation activities. We offer nuclear power plant operators turnkey solutions for specific technical issues related to the operation of VVER-type steam generators and pressurizers-covering everything from initial project planning to final implementation at the power plant unit. Our team has been involved in projects at the Bohunice (Slovakia), Dukovany, and Temelín (Czech Republic) nuclear power plants, as well as in work related to the construction and commissioning of Units 3 and 4 at the Mochovce nuclear power plant.

We currently provide technical services and consultancy to address specific technical challenges at nuclear power plants. Our offerings include the manufacture of spare parts and repair components, as well as the development of technical designs for the repair or refurbishment of nuclear power plant equipment, particularly VVER-type steam generators and pressurizers.

Servicing for nuclear power plants

Activity and production

Modernization project development

We develop modernization projects for steam generators and pressurizers for VVER-440 and VVER-1000 units

preparation of preliminary and detailed designs for equipment modernization/reconstruction
preparation of preliminary structural strength calculations
external arrangement/coordination of independent structural strength verification calculations including thermal-hydraulic calculations where applicable
preparation of manufacturing drawings
preparation of technical procedures for repairs and modernization

Technical problem-solving at NPP

We carry out design and engineering work to rectify defects, and provide technical supervision during the execution of works at NPP

Design work
(preparation of design proposals for partial solutions, preparation of detailed design documentation, assessment of defects identified during power unit maintenance outages, preparation of opinions on the operation of equipment, etc.)
Process engineering work
(preparation of standard repair procedures, preparation of welding documentation)
Technical supervision during work execution at NPP
(design, process engineering, welding)

NPP maintenance and servicing

We handle the installation and removal of components during unit outages and repair defects and systemic faults

Dismantling and assembly work
(opening and sealing of flange connections on steam generators and pressurizers)
Preparation of equipment for non-destructive testing
Repair of detected defects
(grinding, welding)
Repair of generic defects
(repair of threaded holes in steam generator flange connections, repair of flange sealing surfaces, etc.)

Spare parts and components for NPP repairs

We manufacture spare parts for steam generators and pressurizers, as well as semi-finished products for power unit repairs

Manufacturing of spare parts
Fasteners for steam generator and pressurizer flange connections (base materials: 38KhN3MFA, 25Kh1MF, 40Kh, KhN35VT-VD), steam generator heat-exchanger tube plugs (base material: 08Kh18N10T), etc.
Supply of semi-finished products
in particular, type 22K forgings for standard repairs on NPP power units, in accordance with customer requirements
Manufacturing of necessary new repair components
(e.g., special plugs, nozzles/stub pipes)