Dipsa can overhaul and perform the five-yearly inspection on railway rolling stock for electrification and equipment maintenance.

The following are some examples: Railcar Badoni M214; Catenary work cars Fipem, Saem e Keller; Bogies Saem; Work cars OTE; Loaders Vaia Car, Colmar, Donelli, Mer Mec e Solmec; Portal Donelli; Ballast cleaners C330; Tamping machines; Forming machines; Flatcar wagon; Hopper wagon.

Certificates issued after the five-yearly inspection include the inspection certificate, the certificate of suitability for service, brake test certification statement, the compressed air tank periodic check report, the axle check ultrasound and magnetic crack detector certificate, axle electrical resistance check report, wheel arrangement check sheet.