Scotland-based Trenchless Installations provides underground service installations in Central Scotland & the Borders using moling technology. From its base in North Berwick, the company specialises in services including water, gas and drainage pipes, utility ducting and armoured cables, heating coils for heat pumps and even lead pipe replacement. Work is carried out with minimal impact on the site and surrounding areas.

A recent job for Argent Energy of Motherwell involved the installation of a new pressurised waste water pipeline that needed to cross a 20m road.

The company commissioned Trenchless Installations to carry out the job using a TRACTO-TECHNIK GRUNDOPIT 6V mini drill rig which eliminated the need to dig up the road and thereby avoiding road closures. The unit was supplied by TRACTO-TECHNIK UK on an operated hire basis.

With ground conditions consisting of very soft fireclay with fragments of sandstone and coal, a medium hardness drill head was selected along with an F1 DC1 locating system with 15” sonde, a cone reamer and stepped reamer.

The team arrived on site at 8am where a pre-dug launch pit was ready for the positioning of the GRUNDOPIT 6V. The MA09 mixing system was filled with water and bentonite fluids mixed and the sonde calibrated. At 9.30am drilling started and the drill head was accurately tracked and guided to the receiving pit on the other side of the road in just 40 minutes. The pre-ream was then undertaken with drill rods attached to the rear of the reamer to speed up the final ream and pull back and this whole process was completed in just 30 mins allowing for the 200mm ream complete with product pipe to be started before lunchtime. By 1.15pm, the job was complete and the productive, efficient GRUNDOPIT removed and loaded up and away to its next task.

So, from 8am to just after 1pm a full crossing was made with no disruption to the road, the traffic and the surrounding area.

Matthew Kinloch of Trenchless Installations is very impressed with the efficiency and productivity of the GRUNDOPIT and is now actively looking for similar jobs to justify the purchase of a rig;

“The team from TRACTO-TECHNIK, particularly Jack Atherton who helped carry out the drilling with pinpoint accuracy, was highly professional from start to finish. The GRUNDOPIT is an exceptional piece of kit that enabled us to complete this job in a far quicker timescale than anticipated. Our client was happy and we are very impressed and look forward to using it on future jobs.”