The 21-kilometre-long line has been in operation since April 2019, during which time Alstom has already been providing maintenance services.
The new contract includes maintenance of 21 Alstom Metropolis trains, covering the overhaul of the bogies, brake systems, coupling systems and pantographs.
Alstom will also oversee the maintenance of the Urbalis communications-based train control (CBTC) signalling system, traction and auxiliary substations, and the Hesop power system.
This is Alstom’s reversible substation solution, which recovers and transfers almost 100% of the energy generated by braking trains for re-use in the station’s electrical network.