Bayu-Undan to Darwin Gas Export Pipeline

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Activity name
Bayu-Undan to Darwin Gas Export Pipeline
Activity types
Operation of a petroleum pipeline
Submitted by
ConocoPhillips Pipeline Australia Pty Ltd
Submission date
Submission type
Revision (Change of Circumstances or Operations)
Decision date
Related documents
EP Summary (pdf 1.9 MB)
Link to previously accepted EP
Bayu-Undan to Darwin Gas Export Pipeline

Location map (click to enlarge)
Progress bar
Final decision
EP summary published
Activity started
Activity stopped
End of operation of EP
Activity events
Event Event date Next event* Next event due* Related documents
Submission of new EP 29/01/2019 NOPSEMA decision 28/02/2019 Not applicable
Acceptance of EP 28/02/2019 Titleholder action 11/03/2019 Decision notification (pdf 9.5 MB)
Submission of EP summary 08/03/2019 NOPSEMA decision 18/03/2019 Not applicable
Publication of EP summary 28/03/2019 Not applicable Not applicable

* The next event is based on NOPSEMA’s understanding and expectation of what may occur next in the assessment process. There are a number of other events that may occur, and events may happen sooner or later than expected. All events will be published in this table as and when they take place.

Activity description

ConocoPhillips Pipeline Australia Pty Ltd is the operator of the existing operational Bayu-Undan to Darwin Gas Export Pipeline (the Pipeline) in the Timor Sea. The Pipeline is a dry natural gas export pipeline transporting gas from the Bayu-Undan Field (situated in Timor-Leste waters) to the Darwin liquefied natural gas (DLNG) Plant near Darwin, Northern Territory (NT). The Pipeline has been in operation since 2005.

The Bayu-Undan to Darwin Gas Export Pipeline Environment Plan (the EP) details the environmental management measures implemented by ConocoPhillips during the operation of the Pipeline. The Pipeline overlaps three jurisdictions and has several associated pipeline licences - Timor-Leste waters (BU-1-PL), Commonwealth waters (WA-8-PL and NT/PL1) and NT coastal waters (PL20 and NTC/PL1).

The ratification of the Treaty Between Australia and the Democratic Republic of Timor-Leste Establishing Their Maritime Boundaries in the Timor Sea (the Maritime Boundary Treaty) resulted in the sections of the Pipeline within Commonwealth and Timor-Leste waters falling under the exclusive jurisdiction of the Commonwealth. As such, the sections of the Pipeline within Timor-Leste and Commonwealth waters are subject to the Offshore Petroleum and Greenhouse Gas Storage Act 2006 and subsidiary regulations.

The nearest land mass to the Pipeline in Commonwealth Waters is Bathurst Island (located approximately 20 km to the north of KP400). The nearest land to the Pipeline in NT Coastal Waters is the shore crossing at Wickham Point, in Darwin Harbour.

The EP includes transport of dry natural gas from the Bayu-Undan field to the DLNG Plant located at Wickham Point, Darwin and Pipeline inspection, maintenance and repair (IMR) activities.

An operational area will be in place around the Pipeline, within which the Petroleum Activity will take place. The Operational Area comprises a 500-m buffer around the Pipeline considered within the scope of this EP; any activities undertaken outside the Operational Area are not considered to be within the scope of the EP, including vessels transiting to and from port. All IMR activities will take place within the Operational Area.

The EP is intended to cover continuous operation of the Pipeline, and associated IMR activities, for five years from the date of acceptance of the EP.

Northern Territory
Commonwealth waters adjacent to
Northern Territory
Titles (or other instruments)

Mr Daniel Thompson

Environment Supervisor

ConocoPhillips Pipeline Australia Pty Ltd

1 Cambridge Street


Telephone: +61 8 6363 2328



*Where an environment plan was submitted or accepted prior to 28 February 2014 certain information is not published, in accordance with the Environment Regulations in place at that time. For accepted EPs, refer to the attached EP Summary for additional information.