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    Beaulieu, United Kingdom

    Picote Flexi-Sliplining System

    Trenchless Repair
    Location:
    Beaulieu, UK
    Date:

    April 2024

    Time frame:
    3 days
    Pipe:

    2x 80m severely corroded pipes running under a river

    Work:

    Picote Flexi-Sliplining System

    Pipe:

    DN140 (4"), 2 lengths totalling 160m

    Background

    An urgent pipe repair was needed! The pipes run under the river Beaulieu and were severely corroded. There was also a major issue with tidal ingress. 

    The Picote Solution

    Traditional slip-lining requires access pits, large winching or pushing equipment, expensive pipe welding equipment, and additional labour and plant on site.

    Picote Flexi-Sliplining is a low-emission option to rehabilitate DN100-300 (4-12") non-pressure pipes. 

    • DIBt CERTIFIED Flexible 3-layered pipe with better flow properties than cast iron, concrete or clay.
    • EASY minimal training and as little as two-man crew required. Fully welded system with no bypass pumping required. Can be manhole to manhole for simple no-dig solution. Pull-resistant couplings available.
    •  FAST pulling speed of 8m (26ft) per minute! No curing required as factory produced pipe. Welding takes approx. 10 minutes per section.
    • EFFICIENT minimal equipment required. Low installation risk. Can navigate bends. It is a new pipe which means that installation is successful regardless of condition of host pipe.
    • ENVIRONMENTALLY FRIENDLY with no toxic waste. No hazardous chemicals means that it is safe for operators. No emissions during or after installation. Low raw material usage (minimal oil used in pipe) means that there are lower CO2 emissions.
    • SOLUTION FOR INFILTRATION/EXFILTRATION ISSUES
      Where there is water in the pipe, this system can be pulled in place without draining or bypass pumping! Recent UK tidal and under-river case studies.

    The Picote Flexi-Sliplining Method

    The Picote Flexi-Sliplining method does not require any excavation. It uses a small portable welding rig, lightweight materials and the pipe is very flexible so that all works could be carried out from the existing chambers and ground space on site. 

    This particular repair would not have otherwise been possible without very expensive excavations because the pipe runs under a river. 

    TRIM
    WhatsApp Image 2024-04-24 at 16.08.35_446e9568

    The area of grass alongside the river was ideal for assembling the pipe. The local donkeys were curious but fortunately were not affected by the work. The welding rig was set up and powered by a small generator, rollers were placed at various locations to aid the process of pulling the pipe as it grew. The small welding equipment with pipe clamps, joining frame and cutting tool were all lightweight and extremely easy to use. Both lengths of pipe were welded in a single shift with each weld taking approx. 10 minutes to complete. In total the welding of both full lengths took just one day. 

    The pulling head was secured into the start of the pipe and the winch rope attached. The pipe was guided over the frame and through the pipe guide in the base of the chamber. A small battery-powered capstan winch was used to pull the pipe into place. The pulling process was carried out at a rate of approx. 8m per minute. Once the pipe was on its way there were no other additional works 
    required as the pipe fed itself over the rollers and into the host pipe. 

    WhatsApp Image 2024-04-24 at 16.08.35_615eee82
    If you would like to book a call with one of our team to discuss you own project, please use the contact form below and we will be in touch with you as soon as possible!
    Contact Picote Request Form
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