6J09 Oxenholme ISU C.E. to Bridgeton yard. The Drain Train comprises of Class 20 in Balfour Beatty blue/white livery at each end of two KFA wagons (container flats), on which are mounted six 20ft modules which attach to the wagons using the standard twistlocks as used to load ISO containers. It then heads to worksites - and cleans out the drains. It comprises off a 10,000-litre tank of fresh water and a jetting lance capable of pressures up to 2,400 bar, or 240psi , that blasts through any silt, mud, waste, ballast or anything in the drainage channels under the track with a 10,000-litre tank and suction system for collecting this waste material. Seen here on a transit move passing through Crawford (South Lanarkshire) on the WCML inprepration for drainage works around the Glasgow area.