MASTERIS SOLEA in the context of a repair following an accident

MASTERIS supports SOLEA, the entity in charge of maintaining the Mulhouse/Vallée de Thann tram-train, in the context of a repair following an accident between a car and a tram-train in Mulhouse.

An accident between a car and a SOLEA tram-train in Mulhouse seriously damaged the driver's cab, making the rolling stock unusable. Faced with this immobilization situation, MASTERIS mobilized its experts to offer SOLEA a tailor-made solution.

An expertise offer established in less than a month

As soon as the customer agreement was received, MASTERIS structured a rapid mobilization of three technical divisions. A comprehensive range of expertise was established and delivered in less than 30 days, thanks to the synergy between MASTERIS and the various identities of SNCF Voyageurs Material:

• The Engineering Cluster East (CIE) : for the structural analysis of the body and the cabin,
• The Cluster Engineering Center (CIC) : for the expertise of bogies and running gear,
• La Vie Tram-Train Series (CIC) : for components outside the case/bogie perimeter and the spare parts procurement strategy.

Clear goals:

• Establish a precise report of damage,
• Define the conditions for repairing structural elements,
• List the parts to be replaced in an exhaustive manner.

In total, over 70 parts have been identified as requiring replacement. For each, MASTERIS has established an estimate of costs and procurement deadlines.

SOLEA renews its confidence by choosing MASTERIS for repairs

Satisfied with the level of service and the reactivity demonstrated during the expertise phase, SOLEA renewed its confidence in MASTERIS to manage the structural repair phase of the damaged train.

MASTERIS and SNCF Voyageurs Matériel organized the implementation of the work with several industrial partners of the group:

• 🏭 Saintes Industrial Technicenter : in charge of the manufacture of custom-made parts,
• 🛠️ Industrial Technicenter of Nevers — Languedoc : mobilized for boilermaking and welding operations, carried out directly on the SOLEA site in Mulhouse.

A Train Ready to Go Back Into Service

The structural works have been finalized since April 2025. The Tram Train Train, now ready to run, should resume service at the start of the next school year after the last adjustments to be made by SOLEA.

Exemplary Synergy at the Service of the Customer

This mission highlights the ability of MASTERIS to combine engineering, production and maintenance skills within the SNCF group to meet the needs of its customers.

‍

Customer testimonial

“SOLEA is the entity in charge of maintaining the Mulhouse/Vallée de Thann tram-train. As part of the rehabilitation of a heavily damaged tram-train, MASTERIS provided Soléa with its expertise and responsiveness. Masteris's support throughout the process — from the initial diagnosis to technical expertise, to the structural repair of the train — was decisive in making the intervention safe and reliable.”

Claudio Puzzuoli/Technical Director/Solea