C.J. Kelly International Ltd recently assisted in a challenging pipe cleaning project being undertaken by specialist Drainage contractor Fastflow Drains. Working with Derek Sewell of Fastflow the project required the removal of tarmac and concrete deposits from a pipeline serving the Winchester Court residence in Vicarage Gate London W8, UK.

The pipeline in question comprised a cast iron drain which runs directly under the property in solid ground and concrete negating any potential for traditional open cut replacement of the pipeline, so a trenchless solution had to be found. The build-up of tarmac and concrete materials in the drain, which was highlighted by a CCTV survey, were causing damp problems in the basement flat of the property.

Assessing the problem and having worked with CJ Kelly International on previous occasions, Derek sought advice on the most effective options for removing the offending materials. Having heard recommendations from other drainage contractors Derek asked about the potential use of a Picote Super Midi miller machine with the correct cleaning attachments.

Consulting with CJ Kelly proved highly effective when John Kelly recommended the Super Midi with a selection of Tiger cleaning tools.

Renting the machine to complete the works the Fastflow team set up the Super Midi on 7 December 2020 at 08.30, this was in order to start the cleaning operations promptly at 09.00. The later start was out of consideration to the residents. The cleaning operation was completed by 14.30 in less than one normal working shift and the machine was demobilised and removed from site.

Fast Flow used the Picote Super Midi machine for cutting out the tarmac and concrete from the cast iron drain utilising the Picote cutting heads with a Tiger bore drill head, a 100 mm diameter Tiger Drill chain, a 75 mm diameter Tiger twister concrete/liner removal tool, a leader cable, hub and grinding panels and a Flexian 3,000 psi@16 gpm high pressure water jetting machine. The operation was monitored using an A&M Industrial CCTV Camera system.

The Picote Super Midi removed the tarmac and concrete in just 3 passes through the pipeline, using the Tiger twister concrete removal tool. The contractor then ran the machine with the tiger drill chain and leader cable hub and grinding panels to clean up any remaining deposits. The drain was then finally cleaned utilising the high pressure water jetting system before completing a final CCTV Survey.

With the problem identified and the correct equipment in place, the contractor experienced no problems during the cleaning operation saying ‘the Picote machine dealt with the problem with ease’. The drain was found to be holding water after removal of the tarmac/concrete, this was found to be due to a back-fall on the drain. Fastflow recommended re-lining of the drain to the client.

Commenting on the project Derek Sewell said: “Using the Picote Super Midi machine made the job far easier than it should have been and I will be thinking about purchasing one for Fast Flow Drains in 2021. Working with CJ Kelly proved a vital cooperation as the company recommended the right machine to complete the job. The Picote Super Midi is an excellent machine which completed what might have been a difficult task easily.

For CJ Kelly International Ltd John Kelly, Senior Partner said: “We have worked with Fastflow on previous occasions and we are pleased at how well this project progressed with a completion that met all the requirements of the client. Recommending the Picote Super Midi was not a difficult choice given the capabilities of the machine. It must be understood however that in these sorts of circumstances the right machine has to be used for the right job, The Picote Super Midi is just one of the ranges we have available to contractors with whom we are able to consult at any time for any job.”