Nuclear boiler-making & sheet metal work

Nuclear boiler-making & precision sheet metal work: industrial excellence from Actini Group

In response to the safety and performance requirements that characterise today’s energy sector, Actini Group has established itself as the leading industrial partner in the nuclear sector for the bespoke design and manufacture of your components, whatever their size. We fabricate steel and stainless steel components of all sizes, from large-scale structures to high-precision parts. All production strictly complies with the RCC-M code. Our technical expertise guarantees absolute resilience in the face of the most extreme operational conditions in the nuclear sector.

The nuclear sector

The energy sector, and more specifically the nuclear industry, faces unprecedented technological and environmental challenges. Key priorities include managing the energy transition, optimising power station efficiency and extending the operational life of reactors during unit outages.

All equipment deployed in nuclear facilities must be capable of withstanding extreme conditions and radiation.

As even the slightest equipment failure can have critical consequences, the selection of a certified nuclear service provider and subcontractor is of strategic importance to ensure strict compliance with international regulations.

The challenges

This sector faces unprecedented technological and environmental challenges:

Transition & efficiency: optimising fleet performance and extending the service life of power stations.

Plant availability: rigorous management of maintenance work during unit outages.

Process safety: the absolute requirement for nuclear safety and the containment of critical fluids.

Material performance: resistance to extreme conditions and radiation for every component.

To address these challenges, selecting a certified nuclear subcontractor capable of ensuring strict compliance with international regulations is a strategic imperative.

An in-house design office for optimised welded structural design

Because every project requires a highly technical approach, our in-house metal fabrication design office is involved right from the initial design and planning phase. Our engineers model your structures in 3D (SolidWorks) based on your specifications or manufacture components to drawings with absolute geometric accuracy.

This constant synergy between our engineering team and our workshops guarantees an optimal welded steel structure design. We manage fully traceable documentation, ensuring complete traceability of materials throughout the production process via a comprehensive set of certified documentation.

Examples of equipment for the nuclear sector

Thanks to the flexibility of our teams, we are able to carry out complex projects, ranging from single prototypes to medium-volume production:

Frames & sintering furnaces: heavy-gauge structures and mechanically welded frames designed for severe thermal environments.

Manufacture of stainless steel vessels and industrial tanks: bespoke storage containers and process vessels with absolute leak-tightness.

Glove boxes: high-security, leak-tight containment chambers for handling sensitive materials or atmospheres.

Pressure Equipment (ESP / ESPN): design, traceability and manufacture of hollow bodies or pipework subjected to high pressure stresses.

Process skids and industrial assemblies: pre-assembled modular systems combining metal structures, components and nuclear process pipework.

Quality assurance & certifications

A culture of nuclear safety underpins everything we do at Actini Group. Our management system is ISO 9001 certified, guaranteeing the application of the most rigorous nuclear quality control standards. Choosing TCM Mâcon means securing the support of a nuclear metalworking expert that combines the responsiveness of a bespoke workshop with the strength of an internationally renowned group.

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