
Everllence PrimeServ solutions
Bespoke support for all Everllence brands
With two locations in France, Everllence PrimeServ provides comprehensive, efficient end-to-end solutions that are tailored to meet your specific requirements. Our portfolio encompasses expert consultancy, scheduled and corrective maintenance, retrofits, spare parts reconditioning, and troubleshooting services. These capabilities support a broad spectrum of power generation and marine applications, including merchant vessels, cruise ships, passenger ferries, and naval fleets.
We offer extensive technical support for all four-stroke engines, turbochargers, and auxiliary equipment within the Everllence portfolio: MAN, SEMT Pielstick, B&W, Mirless Blackstone, Ruston, Paxman, Holeby Generating sets.
Reconditioning area in Marseille
Storage facilities in Marseille
Our services at a glance
Expert advice and support for your engines
We provide a full range of preventive and corrective maintenance services: repairs, planned maintenance visits, and post-failure intervention on engines and their auxiliaries.

Everllence PrimeServ France delivers exceptional on-site support, covering installation, commissioning, routine repairs, and major scheduled maintenance. Our highly trained, experienced engineers are dedicated to ensuring your engines operate at peak performance.
We recondition everything from parts and components to complete engines, including crankcase repairs. From cleaning to remanufacturing and non-destructive testing, all our reconditioning services comply with manufacturer specifications. Reconditioning is carried out in Marseille for all merchant and military marine, thermal power plants, and nuclear power plant genset applications.
Depending on the needs and constraints of the installation and as soon as operational conditions permit, we can implement a responsive, cyclical approach to maintenance times, thereby optimizing engine availability.

Our specialist expertise and advanced technology enable us to conduct thorough and accurate diagnostics on your equipment. A comprehensive technical audit provides detailed insights into the condition of your assets. And the subsequent detailed report will identify potential issues and offer service recommendations specifically tailored to your operational requirements.

Everllence Saint-Nazaire and Marseille
The work of our Service Centers in France
Maritime Nantaise entrusted Everllence with the 15,000-hour overhaul of one of the MN Tangara’s main engines. The Everllence PrimeServ team in Marseille carried out all the maintenance and service work.
Application: | Merchant vessel |
Location: | Marseille, France |
Power system: |
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Time scale: | March 2020 |
Scope of work: | 15,000-hour maintenance overhaul: disassembly, clean-up, inspection, reconditioning and replacement of cylinder heads, liners, pistons, rings, valves, injectors, etc. |
Maritime Nantaise entrusted Everllence with the 15,000-hour overhaul of one of the MN Tangara’s main engines. The Everllence PrimeServ team in Marseille carried out all the maintenance and service work.
Application: |
Diesel electric power plant |
Power system: |
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Time scale: |
Work carried out between 2013 and 2022 |
Scope of work: |
24,000-hour major service of each of the four PC4 engines, crankcases upgraded for geometry compliance, engine cooling systems improved. |
To maximize engine availability, the Everllence PrimeServ Saint-Nazaire team were commissioned to service and recondition the major components of several Pielstick gensets during planned power plant shutdowns.
Application: | Nuclear power plant |
Power system: |
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Time scale: | Work carried out 2010 – 2023 |
Scope of work: | Engine components (incl. cylinder heads, casings/liners, couplings, exhaust manifold, injectors) were reconditioned at the Saint-Nazaire Service Center. This involved disassembly, cleaning, asbestos removal, expertise and non-destructive testing, complete overhaul, including remanufacturing, reassembly, OEM compliance and provision of quality documentation. |
Everllence PrimeServ France assisted the power station owner by creating extensive spare parts lists through an on-site inventory of OEM Pielstick and Pielstick/Nigata licensee engine components. We also assessed the condition of engines and auxiliaries, provided recommendations for maintenance, and suggested possible modernizations.
Application: |
Power plant |
Power system: |
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Time scale: |
April 2019 |
Scope of work: |
Technical support and inspection of engines/auxiliaries. |
Saint-Nazaire headquarter
Everllence France
8, Avenue Antoine Bourdelle – Porte 7
44600 Saint-Nazaire
France
Phone +33 2 40 90 65 00
primeserv.technical-france@everllence.comMarseille Service Center
Everllence PrimeServ
Urban park lot 1, 25 Boulevard Ledru Rollin
13015 Marseille
France
Phone +33 9 64 41 21 07
primeserv-mrs@everllence.com