VRIOGS 010.7 RevA - Public Transport Victoria

34 VRIOGS 010.7 Revision ASECTION 8.0INSULATED RAIL JOINTS8.1 General1. Glued Insulated Rail Joints (GIRJ) are the preferred option for all insulatedjoint installations.2. The Contractor shall supply and install all new glued insulated rail joints(GIRJs) in running lines which shall be of the encapsulated glued type inaccordance with Plan No. 2095/93.Prior to commissioning works; the requirednew glued insulated rail joints are to be installed with the InfrastructureManager’s approval, and all temporary cables for bonding purposes of theglued insulated joints shall be in accordance with this specification.3. Temporary “jumpering out” of new and “yet to be commissioned into service”insulated rail joints shall be:• In non-electrified areas by use of two bonding cables of 6mm 2 copperwelding cables connected to the rail either side of the IRJ by anapproved bolted type connection. Cables are to be affixed to thesleepers by steel saddles and galvanised nails or an approvedalternative method to prevent the cables being laid over the rail.• In electrified areas by use of two bonding cables of 300mm 2aluminium cables connected to the rail either side of the IRJ by anapproved bolted type connection. Cables are to be affixed to thesleepers by steel saddles and galvanised nails or an approvedalternative method to prevent the cables being laid over the rail.4. On commissioning, all existing GIRJs requiring removal shall be suitablymarked and fitted with two temporary “jumper” type bonds by the Constructor.• In non-electrified areas these bonds shall be constructed of twoapproved 16 mm 2 insulated copper welding type wires, fixed to theweb of the rail by an approved bolted type connector and copper lugs.Cables are to be affixed to the sleepers by steel saddles andgalvanised nails or an approved alternative method to prevent thecables being laid over the rail.• In electric traction areas, these bonds shall be constructed of twoaluminium bonding cables 300 mm 2 fixed to the web of the rail by anapproved bolted type connector and bi-metallic or aluminium lugs.Cables are to be affixed to the sleepers by steel saddles andgalvanised nails or an approved alternative method to prevent thecables being laid over the rail.5. Each GIRJ requiring removal shall be indicated by the words "IRJ OUT"painted in yellow paint on the sleeper adjacent to the GIRJ. An arrow shallalso be painted on the sleeper pointing to the GIRJ to be removed.6. GIRJs shall be removed by the Constructor as soon as practicable followingcommissioning of the relevant stage and replaced by continuously welded rail(CWR) in accordance with the Infrastructure Manager’s track maintenanceinstructions.7. Under NO circumstances shall GIRJ’s be marked or painted directly.8. GIRJ’s within points and crossings shall be installed in the least used or theslower speed route where ever possible.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.