VRIOGS 010.7 RevA - Public Transport Victoria

40 VRIOGS 010.7 Revision ASECTION 10.0TRACK BONDING AND RAILCONNECTIONS10.1 GeneralRail connections and track circuits as specified in this section shall include alltrackside units, earthing, boxes, mounting posts, foundations, impedance bonds,insulated rail joints, associated track connections, cabling, terminating shunts,coupling units, and signal and traction head and cross bonding, electrolysisconnections, spark gap units and cabling and traction feeder cable to the substationnegative pillar for existing trackwork and any new or altered trackwork.10.2 Installation1. Temporary bonding of insulated joints shall be installed where necessary forstagework, and cabling installed in accordance with this specification2. The Constructor shall supply and install all necessary Jointless Track Circuitscomplete (i.e. UM71 type, or other Infrastructure Manager’s type approvedequivalent).3. Where Jointless Track Circuits are installed the Constructor shall ensurethere are no other connections to the track within the “tuned loop” area ofother cabling such as spark gaps or electrolysis cabling.4. High Voltage Impulse track circuits (i.e. Jeumont Schneider or otherInfrastructure Manager’s approved equivalent) shall be supplied and installedfor single rail track circuit applications and in accordance with VRIOGS 012.1Signal Design Specifications.5. The Constructor shall supply and install all necessary conduits, cables andtrack connection fittings and install the track circuits in accordance with thisspecification within the limit of works and as shown on the signallingarrangement plan.6. The track circuit transmitters, receivers, relays and power supplies shall bemounted in field locations cases supplied and installed by the Constructor.7. The trackside field matching units, tuning units, air core inductors, etc are tobe installed by the Constructor in accordance with the manufacturer’sinstallation manuals, or as accepted by the Infrastructure Manager. Theheight above rail to the uppermost section of all items listed within this clauseis to be 800mm approx.8. All new track circuits and in service track circuits shall have all trackconnections and track circuits adjusted to the Infrastructure Manager’sspecifications and carried out by a competent person.9. All cabling to the track rail web is to be fixed to timber bearers by means ofheavy duty galvanised steel saddles (full style) and galvanised nails. Saddlesare to be staggered on each individual cable and are not to be in contact witheach other when affixing parallel track cables. This is especially so atJointless Type Track cabling areas.10. On concrete bearers an approved cable fastening device and plate; shall beaffixed in four positions equally spaced along the sides of the concrete bearer,NOTE: This document is controlled only when viewed on the DOT Engineering Standards website.Any other copy of this document is uncontrolled, and the content may not be current.