Pukearuhe Pipeline LoC Remedials


Client: First Gas Limited (FGL)
Location: New Plymouth, North Taranaki
Scope: Pipeline Remedials
Date: 2016-2017
Project Length:


Oil & Gas

OSD’s Role

  • Installation of retaining wall structures at pipeline ends above/below ground interface
  • Construction of surface contour drains
  • Installation of buried subsoil drains, drains, MH and Sumps
  • Construction of a concrete pipe support structure
  • Excavation of the pipeline to remove existing backfill materials
  • Removal of the existing coating on the excavated section of pipeline and recoating
  • As-built survey of the pipeline location, coating and drainage


The DN750 Oaonui-Rotowaro Gas pipeline (known as the 400Line) runs along the coastal strip in North Taranaki. The pipeline was subjected to a Loss of Containment (LoC) event in October 2011. Following this an initial repair replacing a section of DN400 pipe took place and included coating repairs before backfilling the pipeline.

The re instatement project retains the asset as a permanently above-ground facility. This involves full excavation of 45 metres of pipeline; installation of one concrete plinth and an inspect-a-lift pipe support; re-coating work; associated drainage; installation of retaining walls and permanent batters of trench.

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We are pleased to announce that we have changed the name of one of our key subsidiaries, OSD Pty Ltd to Verbrec Infrastructure Services Pty Ltd as of 17 October 2022.

Rebranding to Verbrec represents our evolution and continued growth by leveraging emerging technologies, thereby remaining at the forefront of an ever-changing industry. Evolution, engineered.

Verbrec has expanded its capabilities significantly to support our clients’ needs and built what we are today, a leading mid-tier engineering, infrastructure, and training company operating across the entire asset life cycle.

Important: Please note that this is a rebranding exercise and as such, will be a name change only; there is no other change to the details of the business. The entity’s beneficial ownership, ABN, registered address and all other relevant details remain the same.

Find out more about our history and plans for the future...