CMSD Phase 2 Project

Started:Spring 2017
Client:Kier / McNicholas
Location:Twickenham to Portsmouth
Value:£10 million
The purpose of the Circuit Main Shorting Device (CMSD) project is to install a method of providing automatic secure and safe isolations to the DC traction power system, utilising switchgear with both local and remote control facilities.

Successful implementation of this new method will create a safer isolation process and will significantly reduce the need for operatives to manually access the rail infrastructure to apply straps during isolations.

Key Deliverables

The scope of works include;

  • Site set up

  • Installation of lineside troughing route to accommodate cable network

  • Install of both small & large concrete bases to support delivery of new modules

  • General upgrade of civils based network

  • installation of new GRP routes to support raised cable route from CMSD module to substation

  • Installation / upgrade of access & egress routes to NWR standards (includes stairwells, driver walkways & footpaths)

 Staffing Specifications

Kier/ McNicholas have engaged with CRS to supply a vast proportion of the construction teams to support the phase 2 section of this project. We have had teams working throughout midweek days and nights and several major weekends, including key weekend possessions to deliver these works. The project at hand involves modification and upgrade of the existing installations & installing new plant, equipment & controls to deliver the benefits mentioned above.

CRS have generally supplied the following staffing solutions throughout this ongoing project:

  • PTS Labourers

  • Skilled Ground Workers


  • Joiners

  • 360 Plant Operators

  • Forklift Drivers

  • Gangers/Foremen

  • Supervisors

  • Site Managers

  • HV Comp


“I would like to thank CRS for all of their support with the supply of skilled labour in helping us with the ongoing delivery of this phase 2 project. The gangs, site supervisors and site management that we have now in place on long term placements are a true credit to you and CRS as a whole”

 Kristjan Dyer – Construction Manager – Kier Services


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