Jeumont, a plant devoted to the manufacture of mobile components for the primary coolant system
The Jeumont plant (Nord, France) designs and manufactures the key mobile components for the primary coolant system of nuclear reactors. As the sole manufacturer of the complete pump, motor and seal package assembly, it supplies customers all over the world.
Key figures
- Over 500 employees
- More than 6,000 control rod drive mechanisms and over 290 reactor coolant pumps delivered worldwide including 40 for onboard reactors (nuclear submarines)
- More than 60 sites worldwide devoted to reactor coolant pumps, spare parts and services
Since 1970, the plant has been developing and manufacturing mobile equipment for the global nuclear fleet, both for the new build market and for the component replacement market.
The plant supplies two types of key components for nuclear reactors:
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Control rod drive mechanisms (CRDMs), mechanical seals and other spare parts
The control rod drive mechanism is an electromechanical assembly installed on the reactor vessel head. It has a power regulating and safety function. The Jeumont plant produces these mechanisms for all types of Pressurized Water Reactors.
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Reactor coolant pumps (RCPs), as both new and replacement components
These are fundamental to the safety and efficiency of nuclear power plants. They circulate a heat transfer fluid between the reactor and the steam generators. The reliability of the primary coolant pump determines the efficiency and regularity of operations throughout the reactor coolant system.
In addition to their design and manufacturing activities, the teams at Jeumont manage all aspects of maintenance, from installation to qualification, through production tests and maintenance checks. They offer their nuclear operator customers the following services:
- modernization and modification of components
- supply of a wide range of replacement parts
- delivery of components in short time frames
- overhaul of motors on site or in the workshop
- research and development of ever more innovative, safe and competitive solutions and products
