Invensys Rail Commissions Reading Depot

Posted by Barry Pearson on June 5, 2013  |   Comments Off on Invensys Rail Commissions Reading Depot

On Sunday 19 May 2013, Invensys Rail, a Siemens company, successfully commissioned the signalling system within the newly constructed Reading Depot. Situated to the west of Reading Station, the depot provides a new train care facility and forms an integral part of the Reading Station Area Remodelling programme.

The scope of Invensys Rail’s contract included all elements of design, supply, installation, testing and commissioning for the scheme, with the signalling system being controlled by the company’s new compact WESTCAD control system and its WESTRACE Mk2 computer-based interlocking (CBI) which is installed in a modular housing. Both systems are located in the depot’s main shed.

Utilising Network Rail’s fixed telecoms network, the WESTRACE interlocking at the depot communicates directly with the relief WESTLOCK interlocking at the Thames Valley Control Centre in Didcot. Representing the first application of this solution in the UK, this link allows fast, direct communication between the two different interlocking types – rather than the slower relay interface traditionally used between CBI boundaries.

Object Controllers are located throughout the depot and control a range of track side equipment, including Frauscher axle counters; clamp-lock point machines and VMS signals. Optical fibre is used for all interlocking communications and the signalling equipment is supplied by a UPS-backed 650V Class 2 distribution system.

Although the depot is only a mile and a quarter long, the interlocking has a total of 145 routes (including cross-boundary routes) and has 46 signals, 28 clamp-lock point machines and 42 axle counter sections. As well as the Great Western Main Lines, the depot also fringes to a Depot Protection System (DPS) which controls the four roads in the main shed, and also the carriage wash facility.

Commenting on the commissioning programme, Invensys Rail’s Senior Project Manager, Mike Garton, said: “For a relatively small area, this scheme has been quite technically complex, with a significant number of interfaces to consider. We adopted a modular signalling approach to the programme, using a modular philosophy for the design, and modular equipment in the application, which greatly simplified on-site testing and installation. To secure approval, the scheme was classified as a pilot project, with the team undertaking a great deal of assurance work prior to the commissioning to ensure such a successful outcome”.