Jeumont

27 Rue de l'Industrie,
59460 Jeumont

A specialized site in design, manufacturing and maintenance of nuclear power plant mobile components

The Jeumont plant: a historic industry leader

The Jeumont plant is a major player in the French nuclear industry. We manufacture mobile components for nuclear power plants as well as equipment for the national defense sector. The Jeumont site brings together highly qualified engineers and highly skilled operators working on advanced technology products.

A historic industrial presence in the Maubeuge area, the plant began operations in 1898, initially manufacturing motors for the railway and electric tramway industries. Production of mobile nuclear components began in the 1970s.

At a glance

Framatome employs more than 1,000 people in the region:

More than 900 employees dedicated to design and production activities across three sites:
– 800 in Jeumont, the historic site
– 30 in Rousies, the logistics platform
– 60 in Maubeuge, the testing and assembly center for products manufactured in Jeumont
70 employees at the Maubeuge site dedicated to maintenance activities at a facility entirely devoted to this business.

Main activities in the region

Design and manufacture of mobile components for nuclear reactor primary circuits and the defense sector
Engineering services, component installation services, and maintenance of facilities for reactors in operation in France and worldwide
Research and development activities aimed at enhancing nuclear power plant reliability and safety

The Framatome Jeumont site supplies two key components for nuclear reactor primary circuits

Control Rod Drive Mechanisms (CRDM): The Control Rod Drive Mechanisms (CRDM) are electromechanical components installed on the reactor vessel head. They regulate reactor power and ensure reactor safety. A CRDM consists of four main parts: the pressure housing, the electrical assembly, the latch unit, the drive rod assembly. Made up of more than 130 different parts, CRDMs perform 75 steps per minute to regulate reactor power output.
Reactor Coolant Pump (RCPs) : also known as primary coolant pumps, ensure circulation of the primary coolant within the reactor. An RCP consists of three main sections: the motor, the shaft seals, the hydraulic. Manufactured from stainless steel, each RCP contains more than 1,300 different parts and requires over 2,500 manufacturing and inspection operations.

Defense activities at Jeumont

The Jeumont site supplies primary coolant pumps for the nuclear propulsion systems of the French navy’s vessels, including nuclear-powered attack submarines and third-generation ballistic missile submarines. The site is also involved in supplying primary pumps for the new-generation aircraft carrier, France Libre.

Our sites in Hauts-de-France for the design and production of mobile components

Jeumont site: design and manufacturing
Maubeuge Hydraulic Test Center: assembly and testing workshop
Rousies site: logistics platform serving the Jeumont and Maubeuge facilities

Aurus: expanding production capacity at the Framatome Jeumont site

Framatome is transforming its industrial facilities to support the objective of delivering an additional 3.5 GWe of capacity annually.

Since 2024, the Jeumont site has been engaged in a major investment program aimed at doubling the production capacity to support the EPR2 program, while continuing to supply equipment for international new-build projects and spare parts.

To achieve this transformation, €103 million is being invested across the Jeumont and Maubeuge sites. A 10,000 m² extension is currently under construction at the Maubeuge Hydraulic Test Center. Ultimately, all assembly and testing activities for CRDMs and RCPs will be carried out there.

As part of the Aurus project, a new 10,000 m² logistics platform was established in Rousies in 2026 for the storage of raw materials, finished products and tooling.