INOXCVA is proud to stand among India’s foremost contributors to ITER, where our cryogenic precision and engineering shine on the global stage. We have successfully designed, manufactured, delivered and installed and installed key components & systems, including flexible and rigid cryolines, warm lines, ESPN certified Pressure vessels, the Test Cold Valve Box, as well as major refurbishments of thermal shields. Our contributions to the ITER project are on-going. Through these excellent efforts, we play a key role in bringing fusion energy closer to reality. Explore Our ITER Journey — Click a Year to Learn More:
Fusion—the same process that powers the Sun — is the breakthrough humanity has long envisioned. ITER is our bridge to that future: a global mission to recreate solar fusion on Earth. This colossal project brings together seven nations: China, the EU, India, Japan, Korea, Russia, and the U.S., united in building the world’s largest tokamak and charting the path to limitless, carbon-free energy.
For more information, visit ITER Official Website.
Between 2014 and 2025, INOXCVA played a key role in designing, engineering, and installing the ITER Cryolines (Group-Y) at Cadarache, France. Covering nearly 4.2 km, these advanced cryogenic pipelines were built to handle extreme temperatures of 4 K and 80 K, ensuring the seamless flow of helium and nitrogen from ITER’s central cryogenic systems to its critical applications.
Engineered to comply with EN 13480 standards, French nuclear safety regulations, EN 12300 (+A1)/ISO 23208 cleaning and ISO/EN cryogenic piping norms along with CE marking, these cryolines form the essential lifeline connecting multiple subsystems within ITER. The scope covered design, manufacturing, integration, and acceptance testing of the pipelines across the Tokamak building, plant bridge, and facilities in Buildings 51, 52, and area 53, ensuring a seamlessly synchronized cryogenic infrastructure.
Between 2015 and 2025, INOXCVA delivered the design, manufacturing, supply, installation, and acceptance testing of the ITER Warm Line (W Group), a 6 km network engineered to transport gaseous helium and nitrogen under varied pressure, temperature, and mass-flow conditions and an oil filter to filter out oil contamination from helium gas before it is vented to the atmosphere. This sophisticated system forms a critical link between ITER’s cryogenic infrastructure and its multiple subsystems, ensuring uninterrupted distribution of cryogens to key applications.
Designed, manufactured, and tested in full compliance with EN 13480 standards, French nuclear safety regulations, and EN 12300 (+A1)/ISO 23208 cleaning protocols, the Warm Line integrates several essential routes, including distribution lines, current lead lines, purge lines, high-pressure helium supply to the cryo-pump regeneration box, return lines from cryo-pumps, LHe plant connections, 80 K loop circuits, nitrogen plant lines, and regeneration lines. Collectively, these components ensure efficient cryogen circulation and return, ensuring ITER’s precision-driven cryogenic ecosystem.
In 2019, INOXCVA undertook the design and manufacture of the Disruption Mitigation System (DMS) Cryolines, delivering a critical network of rigid and flexible lines to support ITER’s Shattered Pellet Injector system. The project featured four cryogenic distribution networks, each comprising two independent single-flow cryolines—one supplying supercritical helium at 5 K and 0.5 MPa to the injectors, and the other returning helium at 100 K and 0.2 MPa—ensuring precise, reliable flow under extreme cryogenic conditions.
Our scope encompassed the complete supply of flexible cryogenic lines, rigid cryoline spools, and their associated supports and hangers, fully aligned with the ITER Organisation’s conceptual design. All components were engineered, manufactured, inspected, and tested according to EN 13480 construction codes, French nuclear safety regulations, and ISO/EN cryogenics standards, with CE marking compliance.
The flexible cryolines extended approximately 250 meters, while the rigid spools covered about 90 meters across multiple diameters, forming a highly integrated cryogenic network that strengthened ITER’s operational resilience and performance. The design of special internal supports—also patented—enabled us to meet the strict heat-inleak constraints required by the design criteria.
From 2021 to 2022, INOXCVA designed, fabricated, and supplied the Hydrogen Mitigation System (HMS) process vessels for ITER’s Vacuum Vessel Pressure Suppression System (VVPSS). This critical system includes a 7 m³ Pool Scrubber Tank (PST), a 5 m³ Quench Tank (QEN), and a 3 m³ Overflow Tank (OFT), all constructed from SS 304L with strict material composition limits for radioprotection, supported by a robust carbon steel S355 frame. Classified as Nuclear Pressure Equipment (NPE) and Safety Important Class-1 (SIC-I) components, these vessels are pivotal for confining radioactivity and safeguarding the Vacuum Vessel against over-pressure events.
The project scope encompassed end-to-end engineering and execution, including detailed design calculations of vessels and piping in compliance with ASME Section
VIII Division 2, EN 13445, EN 13480, PED, and ESPN standards, structural and transportation analysis, and support frame design. INOXCVA managed material procurement adhering to low-activation and nuclear safety requirements, prepared precise 3D models, fabrication, and assembly drawings, and executed manufacturing, inspection, NDT testing, dimensional control, and surface finishing to exacting standards.
Rigorous quality assurance followed, including helium leak and pressure tests, visual and dimensional inspections, and comprehensive factory acceptance tests covering cleaning systems, cooling coils, drainage, and lifting operations. Finally, the vessels were cleaned, packaged, transported, and delivered to the ITER Organization site, ready to perform their critical safety role in one of the world’s most ambitious energy projects.
Between 2021 and 2023, INOXCVA engineered, fabricated, tested, and delivered the Test Cold Valve Box (TCVB) for ITER, installed in Cryo-plant Building B52. This sophisticated valve box is a pivotal element in supplying cryogenic fluids for the Pre-Production Cryopump (PPC) and the production Torus and Cryostat Cryopumps (TCP and CCP), ensuring full functionality before integration into the Tokamak.
Designed to operate across a broad temperature range from 4 K to 500 K, the TCVB handles helium in both liquid and gaseous states. It accommodates 20 valves and integrates extensive instrumentation, including cryogenic control valves, temperature sensors, pressure transducers, and mass flow meters, guaranteeing precise fluid management and monitoring.
All components and systems were engineered in strict compliance with EN 13445 for pressure vessels and EN 13480 for piping, ensuring the highest standards of safety, reliability, and performance for this critical ITER infrastructure.
In 2023, INOXCVA undertook the refurbishment of ITER’s Vacuum Vessel Thermal Shields (VVTS), a critical system that maintains thermal insulation and stability of the reactor core. The work, performed at the ITER Organization site, involves precision dismantling, careful transport, and meticulous reassembly of highly specialized components to restore and extend operational performance.
The project encompasses the refurbishment of all major VVTS components, including the Left and Right Hand Outboards, Inboard, Upper Port Shroud (two parts), and Lower Port Shroud (two parts). Our scope includes dismantling VVTS segments into individual panels, removing existing attached pipes, preparing surfaces for new pipe
installation or supply, bending and attaching new pipes, performing acceptance of the new pipe through various non-destructive testing, pressure testing and, conducting leak tests, assembling the refurbished segments, and carrying out metrology to ensure the dimensions are within strict tolerances. Metrology is performed in temperature controlled room of 20deg +/- 5 deg C.
Finally, the refurbished VVTS components are packaged, transported, and undergo comprehensive final testing at the client site to ensure full compliance with ITER’s stringent safety, quality, and performance standards. This refurbishment strengthens the core thermal integrity of the reactor and exemplifies INOXCVA’s precision engineering capabilities.
In 2024, INOXCVA was entrusted with the Magnet Cold Test Bench (MCTB) Facility project, designed for precise cold testing of ITER’s Toroidal Field (TF) and Poloidal Field (PF1) magnets. The facility integrates a dedicated cryogenic system, including the Test Auxiliary Cold Box (TACB) and associated cryolines, to ensure a controlled and reliable supply of cryogens throughout the magnet testing process.
The system features approximately 120 meters of main cryoline, cryojumpers of around 5 meters connecting CS.TM to TACB interfaces, and a 15-meter cryoline linking the IVB (Intermediate Valve Box), supplied by INOX, to the CTB interface. INOXCVA’s responsibilities cover the design, supply, transportation, and installation of the MCTB facility, as well as the development and integration of the dedicated cryogenic system, including main cryolines, cryojumpers, IVB-CTB interfaces, valve boxes, and auxiliary systems (which includes all warm gas and utility piping), all executed to meet EN 13480:2017 and EUROCODE 8:1998 standards.
The project also includes comprehensive site acceptance testing of the fully integrated system to ensure precision, operational reliability, and adherence to ITER’s stringent technical requirements. This facility exemplifies INOXCVA’s capability to deliver complex cryogenic solutions that support the forefront of fusion science.
In 2025, INOXCVA undertook the refurbishment of the Cryostat Thermal Shield (CTS), a critical system that protects ITER’s superconducting magnets operating at 4.5 K from radiation heat originating in the cryostat and in-cryostat components. The CTS panels are actively cooled by gaseous helium circulating through welded cooling tubes, making precision and reliability paramount.
With stress corrosion cracking (SCC) detected on several panels and cooling pipes, the refurbishment program focused on restoring the integrity of the CTS.
INOXCVA’s scope extends to the complete refurbishment of panels, removal and replacement of affected pipes, bending and attachment of new cooling lines, acceptance of the new pipe through various non-destructive testing, pressure testing and helium leak checks, , and final factory acceptance testing prior to delivery and
supply at the ITER site. This project demonstrates INOXCVA’s capability to execute high-precision cryogenic systems that safeguard the core of one of the world’s most advanced fusion experiments.
