Project

K129 Gathering Pipelines

222km

Pipelines

$102m

Project Value

Zero

LTI’s

DN630

Pipe Diamater

Mitchell met all the requird criteria on this milestone project, significantly through the use of our innovative systems. Mitchell specifically developed over trench welding barges for this project that allowed the direct installation of the pipe and tees. All were butt welded on the weld barge and laid direct to the trench, removing the need to use large electrofusion couplings, improving safety, quality and productivity.

Project Details

222km PE100 up to DN630
Nil use of Electrofusion Couplings >DN250
Single High Pressure Butt Fusion Fast Cool Welding
100% Time of Flight Diffraction NDT testing
100% Pneumatic strength and leak testing
100% GPS weld location and traceability
100% traceability of all materials
100% Welding qualification
Native soil screened for bed and pad
Marker tape and added tracer wire above the pipe
Pull through cleaning of each pipe at welding
Pneumatic flushing for pipe cleanliness verification
Machine control graded trenching including engineering survey and design by Mitchell
Full installation of facilities and tie-ins

LOCATION

Roma, Queensland

PROJECT VALUE

102m

YEAR

2014

CLIENT

Santos Ltd

Related Projects

NSW Department of Commerce

Darling Anabranch Pipeline Project

Grampians Wimmera Mallee Water

Wimmera Mallee Pipeline Project

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.