Bayu-Undan to Darwin Gas Export Pipeline Decommissioning & Preservation
|Activity type||Decommissioning, dismantling or removing a pipeline|
|Submitted by||Santos NA Darwin Pipeline Pty Ltd|
|Submission date||10 August, 2020|
|Link to previously accepted EP|
Please note the Environment Plan has been withdrawn at the request of the titleholder.
The Petroleum Activity consists of decommissioning activities for the Pipeline between the Bayu-Undan Platform and the tie-in point (approximately KP380) and the preservation activities from the tie-in point to the Darwin LNG Plant. These activities include: pipeline isolation at Bayu-Undan Field production cessation; pipeline section cutting and removal and end capping at the tie-in point; pipeline cleaning activities; pipeline section removal from the Bayu-Undan Platform to approximately KP34.2; in situ decommissioning of the Pipeline section from approximately KP34.2 to the tie-in point; pipeline section preservation from the tie-in point to the DLNG Plant pending future use from a new upstream gas supply activity and external inspection of the preserved pipeline section.
Pipeline decommissioning and preservation is planned to start after Bayu-Undan production cessation, which may commence as early as 2021 or as late as 2023 and is planned to be completed during the in-force period of this EP. The total duration of Pipeline decommissioning activities are estimated at approximately 39 - 46 weeks and the total duration of the preservation activities are estimated at approximately 2 years.