CARILLION Transport has used a rail mounted vacuum to reballast switch and crossing areas without damaging surrounding cables and pipes.
The Swedish-built Railvac machine has been used in Scandinavia and the US but not in the UK.
Carillion removed 150 m of wet clay and ballast to a minimum depth of 300 mm, without requiring cable disconnection, in a weekend.
The firm said the Railvac could be used in such areas as track lowering and drainage installation.
The firm is working with Swedish and German partners to develop a British version.