Phil Roderick, Asset Engineer (Structures) – Network Rail

UKDN Waterflow

A poorly installed metallic culvert was failing under excessive loading from the overburden, resulting in the annulus being pushed down, severely restricting flows and causing flooding to a nationally significant installation. Pending construction of a replacement culvert off line, UKDN Waterflow were approached to come up with a scheme to ‘sleeve’ the worst affected section of the culvert by driving a new pipe outside of the annulus of the existing culvert and break out the damaged lining to restore flows to original capacity. Expensive over-pumping arrangements had been in place for some time and the work undertaken by UKDN Waterflow would eliminate the need for this.