Clancy is one of the largest privately owned construction firms in the UK. With decades of experience partnering with the UK’s best known water companies to install new mains and services to major housing developments across the UK. They have developed a reputation as a well-run business that deliver value for money and essential services that help keep the UK running in a sustainable way.

Anglian Water’s IMR WR partner Clancy Group are carrying out a flood mitigation project, and due to the high-water table in the scheme area. The existing sewer main had been lined some ten years previously and infiltration had been identified to seal around a number of laterals in the previously re-lined sewer. 

The system provides a 360° resin cured connection rehabilitation system that mechanically bonds to all pipe types. 

Clancy Group have a been a loyal customer of S1E and highly regard then as being specialist suppliers of trenchless technology. Clancy consulted with S1E in partnership with Picote Solutions for advice and help.

The Picote Connection collar system 2.0 is next generation Connection Collar System from Picote. The product was supplied by Picote reseller and service centre S1E; and worked alongside Picote and Clancy Group for the works to be completed in just one day, which included installation of the new connection collars as well as training and demonstration of the new system to Clancy’s Lining Manager Steve Mason and site operatives.

The Picote Connection collar system 2.0 is a 360° resin cured connection rehabilitation system that mechanically bonds to all pipe types. The unique, fully taped-seam Connection Collars and custom Push Rods allow users to install and rehabilitate connections quickly and easily. The system also offers the option to cure the installed connection with steam curing for even faster project completion. 

The new 2.0 system is available for Main Line Pipe Diameters of DN100 to DN225 (4 in to 9 in diameter) and Connection Pipe Diameters from DN50 to DN225 (2 in to 9 in diameter). It is installed with Normal Air Pressure of 0.3 to 1.5 bar (4.4 to 21.8 psi).

The work has reduced if not eliminated potential ground water inflow and infiltration thereby improving the flow capacity of the main pipeline. 

The only obstacle on the day was that the original manhole used for the lining works a decade ago was now part of a car park and so was not available to use for the collar installations. The installation team assessed the potential location of nearby accesses and selected a new access point which allowed the works to be completed. All works were undertaken using Standard C8 NRASW and standard confined space regulations to install the DN150/DN100 Picote Connection Collars required.

One of the advantages of the new systems is that the Push rods are of a thicker design allowing the collar to be pushed further into the pipeline then the previous system. This reduced the access requirements where laterals need to be connected further into the existing lined main than before.

The work has reduced if not eliminated potential ground water inflow and infiltration thereby improving the flow capacity of the main sewer pipeline.

The main benefits of the new Picote Connection Collar 2.0 system include:

• Seals the main pipeline and lateral connection.
• Protects against infiltration and exfiltration.
• It can be used in lined or unlined pipes.
• Available for standard T and Y connections, and even double connections with 90° or 180° angles between them.
• Fully Taped Seams eliminate the risk of resin leakage to create a high-quality connection.
• Black Seam Thread makes it very easy to visually line up the connection for perfect installations.
• The one-way Steam Port inclusion allows users the option of steam curing, whilst retaining the capability of vacuuming down the Bladder to ease post-curing equipment removal.
• Custom Push Rods address the need to have a solution that is both strong enough for pushing and rotation, while also flexible enough to navigate multiple bends.

Today, Clancy’s work is strong as ever as they’ve continued to install the connection collars in the New Year. Terry Ingleby, General Manager at S1E was on site during the first install and training with Clancy and added, “We pride ourselves on assisting our customers throughout every stage of the trenchless repair process, so from sourcing quality products, to providing training for a straightforward installation on site. We’re delighted that we can be part of projects like this with Anglian Water, Clancy Group and Picote.”

For Picote Dawn Greig, Senior Director commented:“We are delighted that the Connection Collar 2.0 System is now available. We are grateful for the collaboration with S1E and Clancy Group on this project for Anglian Water, especially for their patience while we waited for updated components. Infiltration and exfiltration are a problem everywhere, with this system you can quickly and easily make repairs that strengthen the mainline and the lateral simultaneously, significantly reducing the need for future repair works. The system can be used in conjunction with CIPP lining or by itself to seal defective connections and junctions.”

Pipeline repair without excavation offers real benefits on site, such as lower costs, reducing time on site and disruption to surrounding areas, improved site safety and overall environmental benefits. For more info and advice on trenchless technologies most suitable for you, and finding quality products for your next job on site, get in touch with the S1E Sales Team at 01226 397015 or send an email over to contact@s1e.co.uk

*First published in Trenchless Works magazine January 2023 issue - Link: TW197_January_2023_digital.pdf (trenchless-works.com)