MASTERIS assists SOLEA, the entity in charge of maintenance for the Mulhouse/Vallée de Thann tram-train, with repairs following an accident between a car and a tram-train in Mulhouse.

An accident between a car and a SOLEA tram-train in Mulhouse severely damaged the driver's cab, rendering the rolling stock unusable. MASTERIS mobilized its experts to offer SOLEA a tailor-made solution.

An offer of expertise drawn up in less than a month

On receipt of the customer's agreement, MASTERIS quickly mobilized three technical divisions. A complete expertise offer was established and delivered in less than 30 days, thanks to the synergy between MASTERIS and various SNCF Voyageurs Matériel identities:

• 🛠️ Cluster Ingénierie Est (CIE): for structural analysis of the body and cab,
• 🚄 The Cluster Ingénierie Centre (CIC): for expertise on bogies and running gear,
• 🔩 La Vie Série Tram-train (CIC): for components outside the body/bogie perimeter and spare parts sourcing strategy.

Clear objectives:

• Draw up an accurate damage report,
• Define the conditions for repairing structural elements,
• List all parts to be replaced.

In all, over 70 parts were identified as requiring replacement. For each one, MASTERIS established an estimate of costs and lead times.

SOLEA renews its trust in MASTERIS for repairs

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

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

• 🏭 Technicentre Industriel de Saintes: in charge of manufacturing custom parts,
• 🛠️ Technicentre Industriel de Nevers - Languedoc: mobilized for boiler-making and welding operations, carried out directly on SOLEA's Mulhouse site.

A train ready for service

The structural work was completed in April 2025. The Tram Train, now ready for operation, should be back in service by the start of the new school year, following final adjustments by SOLEA.

Exemplary synergy at the customer's service

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

Customer testimonial

"SOLEA is the entity responsible for the maintenance of the Mulhouse/Vallée de Thann tram-train. MASTERIS provided Soléa with its expertise and responsiveness to restore a heavily damaged tram-train. MASTERIS' support throughout the process - from initial diagnosis to technical expertise, right through to structural repair of the train set - was decisive in ensuring the safety and reliability of the intervention."

Claudio PUZZUOLI / Technical Manager / SOLEA