Project

Wimmera Mallee Pipeline Project

8000km

Pipelines

4000

Property Owners

27 Townships

$429m

Contract Value

The WMPP remains the largest water infrastructure project undertaken in Australia. It involved the replacement of approximately 18,000km’s of inefficient earthen channel with 9,000km’s of pressurised pipeline and associated earthen and tank storages, pump stations and other structures. The pipeline supplies water to 8,000 rural properties andd 36 towns over an area of two million hectares (10% of the area of Victoria).

Major construction challenges included major river crossings, a variety of cultural heritage sites and liaising with some 4,000 property owners.

Mitchell designed and constructed six of the seven supply systems in just over 3 years, delivering the project 6 years ahead of the original 10 year time frame.

Mitchell’s safety performance on the project was outstanding, completing 900,000 manhours without a single LTI.

Project Details

Design & construct 8,000 km’s of pipelines, pump stations, earthen storages and storage tanks
100 km bulk water transfer DN 711 and DN 1016 MSCL Pipe RRJ
1200 km Truck pipeline DN 200 to DN 450 PVC
6700 km of distribution pipeline DN 50 to DN PVC and HDPE
27 pump stations
28 water storage tanks
12 earthen storages
80 major waterway crossings
60 rail bore crossings
100 major bored road crossings
2,200 minor road crossings

LOCATION

Wimmera Mallee, VIC

PROJECT VALUE

688m

YEAR

2006-2012

CLIENT

Grampians Wimmera Mallee Water

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Mitchell was engaged on a Lump Sum EPC basis:

Engineer: including detail design of the pipeline alignments, profiles, road, waterway & service crossings, vents & drains, taking into account landholder constraints, endangered habitat and access issues, and SMS all to APGA CSG Gathering code.

Procure: including the purchase, transport, storage and correct dispatch of all materials and external services providers.

Construct: Install, test and commission the pipelines, and handover As Built GIS and complete MDR.

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