CASE STUDY NORTHCONNEX CONSTRUCTION SUPPORT PROJECT

PROJECT OVERVIEW NorthConnex is a 9-kilometre motorway tunnel in northern . It will act as a tunnel bypass of the congested , connecting the M1 Pacific Motorway to the Hills Motorway. CLIENT LLBJV SCOPE OF WORK (Lend Lease Bouygues Joint Venture) The NorthConnex Tunnel is separated into seven zones with Zone 7 being 1,200m in length starting SERVICES PROVIDED from the mainline tunnel and ending at the northern entry/exit ramp, leading to the M1 Pacific Motorway. ELECTRICAL INSTALLATION AND COMPLETIONS RSGx's Scope of Works: Š Installation of submain and main earth cabling from Substation 07 (SS07) to cross passage SCOPE electrical rooms or Jet fans within Zone 7. A total of 37,000m of submain and earth cabling was CABLE HAULING AND TERMINATIONS installed. PUNCHLISTING & COMPLETION OF Š The termination and pre-commissioning of outgoing submain cables from SS07 QA DOCUMENTATION Š Installation cable support structures within cable pits. All pits were classified as confined spaces. Š Management of confined space work and entry permits. INDUSTRY Subsequent to the cable hauling scope, RSGx were awarded an additional Completions scope. INFRASTRUCTURE

Scope of Works: LOCATION Š Close out and management of works to go/punch list works. SYDNEY, Š Electrical works considered scope gaps with main Subcontract packages within the tunnel and or design gaps identified throughout commissioning. This scope of works covered miscellaneous outstanding works construction, pre-commissioning and commissioning.

During these works RSGx were required to work within commissioning zones, working under the Permit to Work (PTW) management system.

SOLUTION As Substation 07 was located on the surface, the cable hauling subcontract was considered the most challenging cable hauling package due to its highly complex cable route from origin to destination.

The most challenging aspect of the installation was the location of the cabling transition from underground conduits to cable ladder at the tunnel Cross Passage.

RSGx attended to this scope on a 24-hour basis in order to meet the client requirements, with peak manning level of 40 electrical workers and 2 electrical supervisors.

ACHIEVEMENTS TO DATE RSGx's good performance on the cable hauling scope provided the platform for our project team to be awarded an additional completions scope. [email protected] All construction, pre-commissioning, commissioning, and completions activities were completed on time, on budget and LTI free. www.rsgx.com