Case Studies
17 km of 600 dia welded steel
Cross country scheme completed for Morgan Sindall. Pipeline located in Severn Trent Water Area. Pressure tested sectionally to 30 bar after each section was swabbed using swab tracking. End to end swabbing using multiple swabs and swab tracking, potable water dechlorinated prior to discharge during swabbing run. Full volume of main chlorinated to a minimum of 20 ppm then dechlorinated prior to discharge. Over 250 bacteriological samples taken over a three day period, all passed.
Distribution main renewal
Multiple technicians have been employed on Veolia Water mains renewal programme for three years and counting. Mains renewed are swabbed, pressure tested, chlorinated, dechlorinated and sampled. Each technician undertakes multiple schemes each day.
6km of 560 dia SDR17 PE
Cross country scheme for Radius Pipe systems contracting division U Plus. Principle contractor Daniels for Dwr Cymru
Pipeline was tested in one length using a high flow test pump, test interpretation using PEPP test WRc approved test programme
36 km of twin 355 & 315 dia SDR 11 PE pipeline
Pipeline commissioning for Biwater in Scottish Water Area
21Tests, which included 5.6km of 355mm tested to 8bar, 6.1k of 315mm tested to 7bar and 2.6k of 355mm tested to 21bar
Cheshire Link Main – 7.5 km of Ductile Iron
Cross country pipeline commissioned for Morgan Sindall in United Utilities area.
Main pressure tested sectionally and Chlorinated and Dechlorinated in one length.
Somerset Spine Main
Cross Country Pipeline Commissioned for Wessex Water.
4 Km of 630 dia PE tested in one length using high flow test pumps then chlorinated and dechlorinated.
1.6 km of 500 dia PE and DI tested and chlorinated.
7.5 km of 700 dia chlorinated and dechlorinated in environmentally challenging area
Dechlorination of Potable Water
5.5 million litres of potable water dechlorinated for United Utilities from Lowercocks Reservoir so that it could be safely discharged into the River Ribble during the fisheries spawning season.
