Gallery

cutting water main to drop pipe.png

cutting water main to drop pipe.png

digger supporting pole 1.jpg

digger supporting pole 1.jpg

moving cones.jpg

moving cones.jpg

moving gates.jpg

moving gates.jpg

Gantry and traffic management.jpg

Gantry and traffic management.jpg

disestablishment.jpg

disestablishment.jpg

moving kiwirail tracks.jpg

moving kiwirail tracks.jpg

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multiple services.png

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open trench.png

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pipe lifted by 2 diggers.jpg

rail crossing.jpg

rail crossing.jpg

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sand on pipes.png

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resurfacing.jpg

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Bottom of steep hill section

Bottom of steep hill section

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Backfilling and compacting on steep hill face

Backfilling and compacting on steep hill face

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Diggershadow.jpg

Diggershadow.jpg

Cleveland.jpg

Cleveland.jpg

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DSCN0788

Testing maximum deflection of Ductile iron pipes

Testing maximum deflection of Ductile iron pipes

Lifting River crossing pipe into place

Lifting River crossing pipe into place

Pipe in place and in position

Pipe in place and in position

Dave laying corner

Dave laying corner

Beautiful line and perfect bedding left by trencher

Beautiful line and perfect bedding left by trencher

Digger stripping soil, trencher following.

Digger stripping soil, trencher following.

Cairn d crossing

Cairn d crossing

Backfilling along line

Backfilling along line

Welders working on pumphouse spoolwork

Welders working on pumphouse spoolwork

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completed pumphouse2

completed pumphouse2

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Civil contract requiring 2.4m deep trenching over 232m on the Otago Harbour foreshore.  We were contracted to Wallace & Cooper Ltd to open trench for placing & welding pipe in situ between the port and Z energy’s holding tanks.

This line is used to transfer the fuel from ship to the holding tanks. All pipes were laid to within mm accuracy to allow a full penetration weld to an ANSI standard. All welds were fully x-rayed, then coated and wrapped in Polyken tape. The lines have an applied current corrosion protection system, meaning the installation must be perfect to avoid marking the insulation. Prior to commissioning the line, NSOL had an inspector travel down to test the pipe. He stated that the testing results were the best he had ever seen for that type of pipe, reflecting our attention detail when laying and backfilling this pipe. 

This site presented many challenges including digging around unmarked services, trenching across industrial roadway while traffic managing logging trucks, dealing with variable running sands, groundwater, tidal fluctuations, as well monitoring all removed waste and water for contamination, and trenching beneath KiwiRail tracks. 

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pre award2_edited.jpg

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speech2.jpg

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accepting award4.jpg

New Zealand Contractor's Federation Awards Dinner

New Zealand Oil Services Ltd (NZOSL), Z-Energy

 

2014 Hynds Construction Award Winner

Waitahuna rising main and pumphouse upgrade 2015

12km Rising Main Duplication, Pumphouse refit and commissioning of new mains

2016 Hynds Construction Merit Award