Case Study

QCLNG Engineering Survey Services

Location: Kenya, Queensland

Scope: Engineering Survey

Value: >$45 million (contract value)

Year: 2011 - 2014

Brief Description

In March 2011 Fyfe were awarded the Engineering Survey Services contract for the QCLNG Upstream Project. Within four months Fyfe had mobilised 12 survey crews, 10 site office personnel, 15 vehicles and survey equipment. Current project staff numbers are around 70.

FYFE's Responsibility

Details of survey and deliverables required include:

  • Completing sufficient cadastral survey to rectify the Digital Cadastral Database (DCDB) boundaries to sub 2 m accuracy.
  • Densifying the survey control in the survey area to a nominal 3 km density.
  • Produce a base drawing for each block in the following formats:
  • PDF Plan
  • Provision of GIS Data (ESRI Geodatabase)
  • AutoCAD Civil 3D 2011 drawing (C3D)
  • AutoCAD 2007 drawing created from C3D file (ACAD2007)
  • 12da Ascii created from the C3D file (12DA)
  • Photographs taken during survey (IMAGES)

To ensure the efficiency and effectiveness of any field work, it was crucial that a full search of survey plans and existing control survey mark were obtained. Fyfe undertook this preliminary search as well as obtaining contact details of owners.

Fyfe has quality procedures for land access and these contact details were used to communicate with the landowner to ensure there was no access issues both for gaining access to survey marks and obtaining knowledge of any security and environmental issues.

OUTCOMES:

  • The DCDB was adjusted to the property boundaries compiled in the cadastral surveys. Property boundaries in addition to those compiled were adjusted where there was uncertainty in the location and geometry of the DCDB affecting the pipeline and well location.
  • The final DCDB adjustment was presented in ESRI and CAD formats with subject land parcel attributes from the existing DCDB polygons still intact.
  • The final adjusted DCDB is now sufficient to prepare accurate proposed easement plans to cover the proposed pipeline.
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