Anglian Water
Locaton: Northampton
Technique: Pipe bursting
Main Contractor: Danaher & Walsh
CCTV surveys showed that the 375mm concrete trunk sewer was so badly eroded in places that only the wire reinforcement remained and in other places the sewer had collapsed. Anglian Water’s term contractors, Danaher & Walsh decided that replacing the sewer pipe by open cut techniques would cause too much disruption to residents, businesses and road users and called us in to recommend a solution.
The 160 metre section of pipe was to be upsized to 450mm so we recommended pipe bursting using a 225 tonne pipe bursting rig. After bursting a new 450mm ID continuously welded PE pipe was inserted into position.
The road had been closed for a number of weeks during Autumn 2007 and was due to reopen by November 11th. Because the new pipe was installed using pipe bursting, the road was reopened two weeks ahead of schedule bringing relief to everyone affected.
We completed the works in a three day window. If the pipe had been replaced using open cut techniques the work would have taken nearly three weeks, highlighting the time and cost benefits of trenchless technology.
The existing 25” cast iron rising main carries sew...
Perco - Specialists In Trenchless Technology
