ROS PIPELINE RENEWAL BETWEEN TYERS ROAD AND CROSS’S ROAD, TRARALGON

This is a Major Works Contract for the construction of a replacement section of DN900 gravity pipeline Regional Outfall Sewer (ROS), along an existing easement between Tyers Road and Cross’s Road in Traralgon.
The Contract Sum shall be full compensation for the complete construction of the works, construction plant, temporary works, commissioning, defects and liability for the works for the specified period, any remedial works and the replacement of any defective works. Extra monies will be paid only for work undertaken in accordance with Variation Orders issued in writing by the Superintendent.
The Contract Sum is not subject to rise and fall or price variation, nor shall it be subject to variation due to changes in foreign exchange rates. The Contract Sum is inclusive of GST.

The work shall be in complete accordance with:
1. Major Works Contract – Construct Only including Schedules 1 to 23;
2. Schedule 5 Part A – Preliminaries Document (Principal’s Project Requirements);
3. Schedule 5 Part B – Specification;
4. Schedule 5 Part C – Drawings; and
5. Schedule 5 Part D – Attachments.
1.2 PARTICULAR REQUIREMENTS
The Contractor's attention is directed to the particular requirements of the Major Works Contract regarding Completion, the Date for Completion, Liquidated Damages and the duration of the Defects Liability Period.
1.3 OVERALL OBJECTIVE
The overall objective of this contract is to replace approximately 600 metres of sewage outfall pipeline with new corrosion resistant pipeline in the same location, along open reserve and through existing easements in residential properties in Traralgon’s west end.
1.4 BACKGROUND
The ROS pipeline is a critical asset servicing approximately 35,000 domestic customers at this present time. The ROS pipeline discharges up to 35 ML per day of treated effluent from Opal (Australian Paper) and the domestic municipalities of Rosedale, Traralgon, Yallourn North, Glengarry, Toongabbie, Churchill, Yinnar, Boolarra and part of Morwell, from the Gippsland Water Factory (GWF) in Morwell out to Dutson Downs. The original pipeline was constructed in 1957 and is mostly reinforced concrete pipe. The main concern with the section of pipe to be replaced (Figure 1) is the known (2006 longitudinal split along the crown of the pipe) and estimated internal corrosion within the pipe, which could lead to another break.