TRENCHLESS SOLUTIONS FOR THE RAIL INDUSTRY

No disruption, no delays. Perco installs UTX’s & trackside drainage whilst train operations carry on unaffected.

With increasing passenger numbers putting more pressure on the rail network, the need to minimise disruption to passengers during engineering works is paramount. Works which can be safely carried out without disrupting train services offer a realistic and cost-effective alternative to track possessions.

Modernisation of communications, signalling and power can require new Under Track Crossings (UTX) for associated cabling. Trenchless technology is the optimum solution for installing new UTX’s whilst rail operations continue normally. Trenchless technology is also the most efficient method for installing, upgrading or rehabilitating trackside drainage.

The benefits
Perco’s experience in the rail industry and its wide range of trenchless techniques give rail engineers many benefits. Perco works flexibly to meet client requirements and can operate on a sub-contractor basis or offer complete turnkey solutions including feasibility studies, scheme design, enabling works and reinstatement post works.

Unlike many other trenchless technology contractors, Perco can provide a range of techniques to meet different ground conditions, site access and land availability, meaning that we can give unbiased advice about the best solution for a given situation.

• Pipes and cable ducts can be installed under live rail without affecting train operations
• Pipe cleaning, rehabilitation and repair projects can be carried out with little or no impact on train operations
• Perco is Link Up approved, holds ISO9001 and is an Investor in People

Under track crossing (UTX) installation

• Optically guided auger boring
  Optically (or laser) guided auger boring is the best solution for installing pipes and cables ducts when accuracy and surface movement restrictions are critical and trackside access is limited. Accuracy tolerances of +/- 40mm in a 50 metre shot are routinely achieved. Vitally important is the ability to achieve +/- 3mm settlement at rail level which negates long term track settlement.
• Directional drilling
  Where sufficient trackside access is available directional drilling provides an accurate and cost-effective method for installing pipes and ducts under live rail. The shallow arc profile of the installed pipe makes it suitable for cables and pressurised water mains but not suitable for gravity sewers. Accuracy tolerances of =/-100mm can be achieved.
• Shaft sinking
  As part of our services we construct access shafts to install new sewer connections. Shafts can be sheet pile, timber frame, concrete bolted ring or caisson type. Concrete shafts are usually converted to manholes after works have been completed.
  
  

Under track and trackside rehabilitation
Perco has unrivalled expertise in sewer rehabilitation, replacement and upsizing. Several of our techniques are ideally suited to the rail industry as they can be operated with minimal or even zero disruption to rail operations at track level.

• EcoCIPP™ lining
  Ideal for the quick rehabilitation of worn out and damaged gravity sewers, trackside drainage and ducts. EcoCIPP is a seamless GRP liner system reinforced with UV cured resin which can be installed from existing manholes without interference to rail operations.
• Pipe bursting
  Where existing gravity sewer pipes or ducts need to be replaced or upsized, Perco offers a range of pipe bursting solutions capable of upsizing pipes from 75mm ID to 1200mm ID. Perco’s miniburst, manhole bursting and Expandit™ techniques can be operated from existing manholes.
• Slip lining
  An economical repair solution where the existing internal diameter isn’t required; slip lining can be carried out using continuously welded or Snapit™ segmental pipe sections.
• Pipe cleaning and CCTV
  We offer a range of pipe cleaning techniques including pigging, high pressure jetting and debris removal to return trackside drainage back to full capacity. We also carry out CCTV surveys and condition reports.