Drainage engineers have used no-dig pipe lining technology to carry out a comprehensive upgrade of surface water and foul drains at an East Midlands power station without impacting on site operations.
The Lanes Group plc teams installed 11 pipe liners and 40 local structural point repairs across the drainage system at Corby Power Station in Northamptonshire.
The work was part of a planned preventative maintain programme required by the power station’s owner, ESB, the state-owned electricity supply company in Ireland.
Rob Heward, Mechanical Maintenance Coordinator at Corby Power Station, praised the Lanes team for their efficient approach to the project, and the quality of their work.
He said: “They were able to complete the work with no disruption to our processes, which was very helpful. As an energy generator, health and safety is a priority for us, and the Lanes safety systems were exemplary.”
Corby Power Station is a 350-megawatt electricity combined-cycle power station, with two gas-fired turbines supported by two heat recovery steam generators. It supplies electricity to the National Grid.
Lanes had carried out a full CCTV drainage survey of the two-acre site in May, delivering a comprehensive report that allowed the power station to programme in remedial work.
Teams from the Lanes depot in Derby and the Lanes Lining and Renovation Division, in Manchester, worked together to plan and implement the drainage repair programme.
The drainage system was comprised mostly of clay pipes ranging from 150mm to 600mm in diameter. Damage included pipe cracking, partially collapses pipes, and joint displacements.
Chris Batey, Regional Manager for Lanes Derby, said: “We created a spreadsheet of all the remedial work, along with locations, so we could schedule it in the most efficient way.
“We kept a jet vac tanker on site all week, while also deploying a CCTV drainage survey crew, working alongside two lining teams from Manchester. With careful planning we could share resources optimally between the teams, and complete the programme within 10 days.”
Point lining, also known as patch lining, is an ambient cure in place pipe lining (CIPP) technique that involves installing a resin-impregnated glass-fibre liner inside a damaged section of pipe, where it is inflated and then hardens to create a new pipe-within-a-pipe.
Lanes Lining and Renovation Division also installed liners where there were sections of pipe with more extensive damage, the longest of them 56 metres in length.
Hot water CIPP was used to harden the liners. The lining teams also installed two 600mm-diameter point liners.
Lanes Lining Manager Simon Bull said: “It was a great collaborate effort between us and our depot colleagues, and the power station team led by Rob. We had a pre-start meeting to clarify issues, allowing us to draw up a clear plan of works. Rob was very helpful and coordinated traffic on site to allow us complete the project ahead of schedule”
Lanes Group: www.lanesfordrains.co.uk