Production

We are a strategic, experienced and reliable partner in the field of component and equipment production for VVER nuclear technology (PWR pressurized water reactors) as well as the western-type BWR reactors (boiling water reactors).

Production

We have been operating in the VVER nuclear technology market for almost 40 years. During this time, we have produced 21 complete VVER 440/V-213 type reactors and three VVER 1000/V-320 type reactors, including the control rod drives. For more than a quarter of a century, we have also been active in the market of PWR and BWR-type nuclear power plants.

Our entry to this market required the acquisition of special certifications, such as ISO, ASME, DIN, CEFRI and others. We have gradually worked our way up to the role of a qualified supplier of nuclear equipment for the main contractors and operators of nuclear power plants in Western Europe, the U.S.A. and the Far East. We produce equipment either based on the customer's documentation or we can develop and manufacture new equipment based on the initial design.

ŠKODA JS responded to the changes in demand for complete VVER type reactors in the 1990s by developing a new production program focused on nuclear fuel handling. This is currently one of the key segments of our production division.

In the early 1990s, ŠKODA JS further focused on the modernization and lifetime extension of existing components as well as on the supply of spare parts. We developed and produce storage racks of our own design. A product category offering good prospects is storage casks for various fuel types and nuclear waste, developed in-house, licensed and supplied by us.

Our key product is modernized control rod drives, which we produce and supply for various types of nuclear power plant reactors as well as research nuclear reactors, including the I&C system. Thanks to our innovations, we have gradually managed to extend their design lifetime and met all the technical as well as legislative requirements for extended reliable operation of control rod drives in both standard and emergency modes.

We have a unique machine park, including a 400t crane, and we can heat-treat, weld, mechanically machine, blast or perform color surface treatment of standard and oversized structures, forgings, castings and weldments from carbon and stainless steel. We offer capacities of electric car furnaces; chamber furnaces; WPA portal boring machine; W 200 and W 250 horizontal boring machines; SIU 400 lathe; Schiess, SKIQ and SKJT carousels; Deuma 250t automatic welding machine; Loch and Wohlenberg deep-boring machines; MCV and Correa machining centers; Integrex, Nexus, Mazzak, Masturn turning-lathe centers; Weiler and Geminis lathes, including locksmith, cleaning and inspection operations.

Few words from Division Director

Karel Bednář, Nuclear Equipment Division Director

Our history as well as our staff’s achievements and past projects – that is a commitment for us, but also a reference and competitive advantage.

Read more

Karel Bednář
Nuclear Equipment Division Director

Equipment for VVER and RBMK nuclear power plants

  • Control rod drive mechanisms PRO-type (VVER 440)
  • Linear stepping drives LKP-type (VVER 1000)
  • Intermediate rods of control rod drive mechanisms PRO-type
  • Service equipment - Reactor main flange joint stud tensioners, Equipment for the removal, transport and disposal of neutron flux sensors and thermocouples from VVER reactors
  • Hermetic cable penetrations
  • Components for reactor power measurement – In-core neutron flux measurement channels and thermocouples
  • Fresh fuel top and bottom nozzles
  • Nickel and graphite gaskets

PWR and BWR reactor internals, including the manipulators

  • PWR and BWR reactor internals, including the manipulators
  • Spent fuel cask transfer facility
  • Reactor main flange joint stud tensioners

Equipment for research reactors

  • Research reactor internals
  • Control rod drive mechanisms for research reactors

Equipment for spent nuclear fuel storage

  • Compact spent fuel storage racks type VVER 1000, VVER 440 and for western fuel type
  • Spent fuel transport and storage casks type ŠKODA 1000/19, ŠKODA 440/84, TUK, VTUK

External manufacturing operations

  • Machining
  • Welding and surfacing
  • Heat treatment and heating
  • Surface finishing
  • for more information on technological possibilities, free workplace capacities, processing of your enquiries, please contact: Martin Mejtský, tel.:  +420 733 148 355, martin.mejtsky@skoda-js.cz
Material Engineering

When implementing its projects, ŠKODA JS a.s. uses, to a large extent, the following materials:

  • Semi-finished products of high-grade stainless steels, with focus on special materials for nuclear power engineering
  • Metallurgical semi-finished products (steel sheets, bars and tubes) of austenitic and martensitic corrosion-resistant steels particularly to the EN standards for general use and pressure parts

Most frequent material and semi-finished product grades

  • We offer turn-key solutions of material issues from design and calculations to conventional and also special material tests.
  • We proceed on the availability of stock of a wide range of specific material and semi-finished product grades.
  • To provide comprehensive solutions of material issues, we have our own material engineering, material laboratory, calculation and corrosion specialists available.
  • The assessment and proposal of a suitable material can be developed up to the level of assessment by technological specialists in machining, welding, heat and surface treatment technologies.

  • The synergetic work of these units makes it possible to propose specific material grades for given environments, offer substitute materials to different national standards (ČSN, EN, ASTM/ASME), analyse the causes of material failures in operation, make material tests, and design and verify material heat treatment modes for specific operation requirements.

Offered material tests:

  • Tensile tests at room and increased temperatures
  • Brinell, Rockwell and Vickers hardness tests
  • Impact bending tests at room and low temperatures (to -60 °C)
  • Metallographic examination of materials using an optical microscope (micro- and macrostructure analyses)
  • Verification of heat treatment modes in atmospheric and vacuum furnaces, maximum batch weight 50 kg

For more information about our accredited laboratories please visit us at.

 

References

ŠKODA JS are people I can count on.

Casks for the transport and storage of spent nuclear fuel

Casks for the transport and storage of spent nuclear fuel

  • The cask for VVER 1000 reactor fuel – ŠKODA 1000/19
  • The cask for VVER 440 reactor fuel – ŠKODA 440/89
  • Cask VPVR
  • Special casks
  • Cask transfer equipment
  • Equipment for the removal and disposal of sensors
Control rod drives

Control rod drives

  • Dukovany NPP, Temelín NPP
  • Jaslovské Bohunice NPP, Mochovce NPP, Slovakia
  • Paks NPP, Hungary
  • Ukrainian NPPs
Equipment for PWR- and BWR-type nuclear power plants

Equipment for PWR- and BWR-type nuclear power plants

  • Reactor internals
  • Cask transfer equipment
  • Tools and manipulators
Units 3 and 4 at Mochovce NPP, Slovakia

Units 3 and 4 at Mochovce NPP, Slovakia

  • The final supplier of the primary circuit and the fuel-handling part in both units under construction
  • Currently in the role of supplier of the power plant’s essential operating systems – the primary circuit, the fuel handling part, connecting pipes, intermediate cooling circuits, parts of the instrumentation and control system, and maintenance workshops.
  • One of the five main suppliers
  • Expert support provided to the investor in the areas of engineering, planning, licensing support, construction and assembly works and commissioning
  • Strength, seismic and lifetime calculations
Nuclear power plants in Ukraine

Nuclear power plants in Ukraine

  • Investment projects
  • The capping of channels of ionization chambers – equipment production, assembly supervision, and training for operating staff
  • Emergency containment depressurization (Venting)
  • The project of refurbishment of a part of the I&C systems – a unified technology set for the Zaporozhye NPP
Dukovany nuclear power plant, Czech Republic

Dukovany nuclear power plant, Czech Republic

  • The final supplier of the primary circuit and the fuel-handling part in all four units at the nuclear power plant
  • General contractor for the unique project of the complete I&C systems replacement in full operation
  • Reconstruction of the ancillary switchboards
  • Strength, seismic and lifetime calculations
Temelín nuclear power plant

Temelín nuclear power plant

  • The final supplier of the primary circuit and the fuel handling part in both units
  • Control system refurbishment projects
  • Strength, seismic and lifetime calculations
  • The capping of channels of ionization chambers – equipment production, assembly supervision, and training for operating staff
Units 1 and 2 at Mochovce NPP, Slovakia

Units 1 and 2 at Mochovce NPP, Slovakia

  • The final supplier of the primary circuit and the fuel handling part in both operated units
  • Construction documents
  • Component production and assembly
  • Assembly on site
  • Commissioning

Paks nuclear power plant, Hungary

Paks nuclear power plant, Hungary

  • Reactor production and assembly supervision in all four units of the nuclear power plant
  • General contractor for the project of instrumentation and control system replacement
Bohunice V2 nuclear power plant

Bohunice V2 nuclear power plant

  • The final supplier of the primary circuit and the fuel handling part
  • Calculations – the Scorpio reactor core monitoring system
Research, training and experimental reactors

Research, training and experimental reactors

  • Experimental, research and training reactors
  • Complete turnkey projects
  • Reactor control system refurbishment
Loviisa nuclear power plant, Finland

Loviisa nuclear power plant, Finland

  • Delivery of equipment and components – intermediate rods for control rod drives and reactor control equipment, fuel assembly components
Tighteners

Tighteners

  • Reactor main flange joint stud tensioners

  • Tightening units for reactor upper block flange joints
Device for removal, transport and disposal of thermocouples and neutron flux sensors

Device for removal, transport and disposal of thermocouples and neutron flux sensors

  • Transport and disposal of thermocouples and neutron flux sensors from VVER 440 reactors
  • Transport and disposal of thermocouples and neutron flux sensors from VVER 440 reactors
Neutron flux measurement channels

Neutron flux measurement channels

  • Neutron flux measurement channels for VVER 440 reactors
  • neutron flux measurement channels for VVER 1000 reactors
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