Project Summary
Developed a bespoke automated test system – enabling accurate fault diagnosis, comprehensive functional testing and faster turnaround times.
Achieved zero units deemed unrepairable due to obsolescence – through proactive component replacement and ongoing obsolescence management.
Background
A large number of Alstom’s legacy Electrostar fleets have long relied on a specific model of Door Control Unit (DCU), which recently entered obsolescence as declared by the OEM. Alstom required a repair partner who could not only restore performance of the DCUs but do so with long-term sustainability and cost efficiency in mind.
Enter TP Matrix – specialists in electronic repair and overhaul within the rail sector. With deep experience in obsolescence management and complex systems testing, TP Matrix partnered with Alstom to develop a proactive, scalable repair solution for the entire fleet.
Client challenges
The task involved two primary challenges:
- Restore failed DCUs to full operational condition, post in-service failure
- Navigate and mitigate obsolescence risks, ensuring repairability over time
With over 6000 units in service and OEM replacements no longer an option, the economic implications of a full system replacement were significant – potentially running into millions of pounds across the fleet. TP Matrix’s repair-first strategy offered a compelling alternative.
Client feedback
“Alstom’s Engineering Manager for the GTR Project, Simon Lane said: “It has been a thoroughly enjoyable experience working directly with TP Matrix. They have listened to us and our requirements, also noting that all and any changes must go through the correct process. And as good to their word; TP Matrix have delivered at the right price, on time and on budget.”