COMMONWEALTH OF AUSTRALIA
Sections 226 and 708
Offshore Petroleum and Greenhouse Gas Storage Act 2006
APPLICATION FOR VARIATION OF A PIPELINE LICENCE –
PIPELINE LICENCE WA-31-PL
I, STEVEN ROBERT TAYLOR, the Delegate of the National Offshore Petroleum Titles Administrator, on behalf of the Commonwealth–Western Australia Offshore Petroleum Joint Authority hereby give notice pursuant to sections 226 and 708 of the Offshore Petroleum and Greenhouse Gas Storage Act 2006 that an application has been received from
Woodside Energy Ltd.
(ACN 005 482 986)
BP Developments Australia Pty. Ltd.
(ACN 081 102 856)
Chevron Australia Pty Ltd
(ACN 086 197 757)
Japan Australia LNG (MIMI) Pty. Ltd.
(ACN 006 303 180)
Shell Australia Pty Ltd
(ACN 009 663 576)
Woodside Energy (North West Shelf) Pty Ltd
(ACN 004 514 489)
for the variation of Pipeline Licence WA-31-PL in the offshore area of Western Australia, as set out below.
Pursuant to subsection 226(3) of the Act, a person may make a written submission to the Titles Administrator about this application within 30 days from the date of this notice.
This notice takes effect on the day on which it appears in the
Australian Government Gazette.
Made under the Offshore Petroleum and Greenhouse Gas Storage Act 2006
of the Commonwealth of Australia.
STEVEN ROBERT TAYLOR
DELEGATE OF THE TITLES ADMINISTRATOR
ON BEHALF OF THE COMMONWEALTH–WESTERN AUSTRALIA
OFFSHORE PETROLEUM JOINT AUTHORITY
APPLICATION FOR VARIATION OF
PIPELINE LICENCE WA-31-PL
The application seeks to effect the following amendments to the licence:
- The Route of The Pipeline is varied by deleting all the current text and replacing with the following:
“The pipeline route commences at the Universal Connection System (UCON) connector face on the flexible flowline downstream of the Lambert Deep manifold and finishes at the flange face upstream of the riser emergency shutdown valve (RESDV) on the Angel Platform. Features of the route are described in the table hereunder and the route is further described in the attached route map (Attachment 1). The pipeline licence route corridor extends ± 40 m either side of the provided route. Coordinates are provided to the Geodetic Datum of Australia (GDA94), UTM Zone 50.”
Main Halyard Flowline System Co-Ordinates |
| Feature Name | KP | Easting (m) | Northing (m) |
1. | UCON Connector face at LD Manifold | 0.0 | 445 763 | 7 850 743 |
2. | MLC-15 | 0.997 | 446 474 | 7 850 255 |
3. | MLC-14 | 1.993 | 447 281 | 7 849 687 |
4. | MLC-13 | 2.988 | 448 090 | 7 849 128 |
5. | MLC-12 | 3.985 | 448 904 | 7 848 555 |
6. | MLC-11 | 4.987 | 449 719 | 7 847 982 |
7. | MLC-10 | 5.978 | 450 534 | 7 847 410 |
8. | MLC-09 | 6.972 | 451 347 | 7 846 838 |
9. | MLC-08 | 7.783 | 451 915 | 7 846 270 |
10. | MLC-07 | 8.954 | 452 478 | 7 845 696 |
11. | MLC-06 | 9.403 | 453 144 | 7 845 235 |
12. | MLC-05 | 10.284 | 453 874 | 7 844 743 |
13. | MLC-04 | 11.166 | 454 601 | 7 844 245 |
14. | MLC-03 | 12.050 | 455 362 | 7 843 808 |
15. | MLC-02 | 12.930 | 456 221 | 7 843 928 |
16. | MLC-01 | 13.811 | 457 079 | 7 844 088 |
17. | AP2 flowline crossing | 14.529 | 457 775 | 7 844 017 |
18. | AP2 umbilical crossing | 14.544 | 457 786 | 7 844 007 |
19. | J-tube bellmouth | 14.587 | 457 814 | 7 843 975 |
2. Under Specifications, the Design and Construction is varied by deleting all the current text and replacing with the following:
Design and Construction
“The offshore pipeline is of flexible construction and as such is designed and constructed
according to the international standard ISO 13628-1, “Design and operation of subsea
production systems – Part 1: General requirements and recommendations”, as is permitted by Clause 2.2 of AS2885 Part 4. The rigid topside piping on the Angel Platform that forms part of the pipeline is designed and constructed according to the Australian standard AS 2885.4.”
3. Under Specifications, the Basis of Design is varied by updating the items in bold and italics:
Item | Item Description | Details |
1 | Inside diameter of pipe and riser | 254 mm (10 inches) |
2 | Wall thickness of flowline and riser section | Light weight (KP 0 to 6.972): 55.2 mm Heavy weight (KP 6.972 to 9.403): 60.8 mm Medium weight and riser (KP 9.403 to riser hang-off): 59.3 mm |
3 | Length | 14.7 km to RESDV |
4 | Design life | 20 years |
5 | Pipeline Construction | Unbonded Flexible Pipe |
6 | Pipeline and Riser Material Grade | Carcass Layer (process wetted): AISI 316L Pressure Sheath (light and heavy weight): TP 37 Pressure Sheath (medium weight and riser): TP 35 Various other steel and polymer materials are applied to complete the flexible cross section. |
7 | Pipeline Specification | Subsea flexible: Unbonded Flexible Pipe to API 17J Topside rigid piping: AS 2885.4 / DNVGL-ST-F101 |
8 | Minimum yield strength of pipe steel | Various steel yield strengths are adopted within the flexible cross section. |
9 | Pipeline System Pressure | MAOP: 19.5 MPa(a) (19.4 MPag) Maximum Design: 31.8 MPa(a) Minimum Design: 0 MPa(a) |
10 | Design Capacity | 180 MMscf/d |
11 | Maximum Design Temperature | 115 ⁰C |
12 | Minimum Design Temperature | -30 ⁰C |
13 | Operating temperature range | Maximum: 115 ⁰C (Inlet condition) Minimum: 21.3 ⁰C (Arrival condition) |
14 | Characteristics of substance proposed to be conveyed | Gas and condensate |
15 | General plans and descriptions of pump stations, tank stations or valve stations and their equipment | A two slot CRA Lambert Deep Manifold is installed immediately upstream of KP 0.0 which is nominated as a terminal station. |
16 | General plans and description of pigging facilities | N/A |
17 | Cathodic Protection | Al-Zn-In sacrificial bracelet anodes Monitoring via ROV or AUV survey |
18 | Hydrate Management | Insulation and MEG injection |
Overview
The Offshore Petroleum and Greenhouse Gas Storage Act 2006 was enacted to provide a legal framework for the regulation of offshore petroleum activities and greenhouse gas storage in Australia. This Act was introduced to address the need for a comprehensive regulatory system that balances the economic benefits of offshore petroleum activities with environmental protection and safety. The Act was enacted by the Parliament of Australia and its policy objective is to ensure the sustainable development of Australia's offshore petroleum resources while minimising environmental impacts. The present notice pertains to an application for the variation of Pipeline Licence WA-31-PL, involving several entities including Woodside Energy Ltd., BP Developments Australia Pty. Ltd., Chevron Australia Pty Ltd, Japan Australia LNG (MIMI) Pty. Ltd., Shell Australia Pty Ltd, and Woodside Energy (North West Shelf) Pty Ltd. The application seeks amendments to the pipeline route, design, construction specifications, and operational parameters, which will be subject to public scrutiny and submission as per the provisions of the Act.
This notice, issued by Steven Robert Taylor, the Delegate of the National Offshore Petroleum Titles Administrator on behalf of the Commonwealth–Western Australia Offshore Petroleum Joint Authority, indicates that modifications to the existing Pipeline Licence WA-31-PL have been proposed. The changes include a detailed redefinition of the pipeline route, alterations to design and construction specifications in compliance with international and Australian standards, and updates to the basis of design such as pipe diameter, wall thickness, length, and material grades. These modifications aim to enhance the efficiency, safety, and environmental compatibility of the offshore pipeline operations. The public is invited to submit written comments on the application within 30 days from the date of this notice, ensuring transparency and stakeholder engagement in the regulatory process.
Scope and Application
The Offshore Petroleum and Greenhouse Gas Storage Act 2006 governs the regulation and management of offshore petroleum and greenhouse gas storage activities in Australia. This Act applies to entities involved in offshore petroleum activities, including Woodside Energy Ltd., BP Developments Australia Pty. Ltd., Chevron Australia Pty Ltd, Japan Australia LNG (MIMI) Pty. Ltd., Shell Australia Pty Ltd, and Woodside Energy (North West Shelf) Pty Ltd, which have submitted an application for the variation of Pipeline Licence WA-31-PL. The application pertains to the amendment of the pipeline's route, specifications, and design and construction details for a pipeline operating in the offshore area of Western Australia. The proposed changes involve modifying the pipeline's route, updating the design and construction specifications to comply with international and Australian standards, and revising the basis of design parameters such as inside diameter, wall thickness, and material grades. The application extends to the Commonwealth of Australia and the Western Australia Offshore Petroleum Joint Authority, with specific geographic boundaries defined by the pipeline's route coordinates based on the Geodetic Datum of Australia (GDA94), UTM Zone 50. The public is invited to submit written submissions regarding this application within 30 days from the date of this notice, as stipulated by the Act.
Key Provisions
The application under sections 226 and 708 of the Offshore Petroleum and Greenhouse Gas Storage Act 2006 pertains to the variation of Pipeline Licence WA-31-PL, which involves several specific amendments. The primary changes include the redefinition of the pipeline route, with coordinates specified according to the Geodetic Datum of Australia (GDA94), UTM Zone 50. The new pipeline route starts at the UCON connector face on the flexible flowline downstream of the Lambert Deep manifold and ends at the flange face upstream of the riser emergency shutdown valve (RESDV) on the Angel Platform. The route is further detailed in an attached route map (Attachment 1), and the licence route corridor extends ± 40 m either side of the provided route. Additionally, the design and construction specifications of the pipeline have been updated to comply with international standards, such as ISO 13628-1 for flexible construction and AS 2885.4 for rigid topside piping. The basis of design has also been revised, detailing the inside diameter, wall thickness, length, design life, and material grades of the pipeline and riser sections.
The obligations and requirements imposed by the Act on the entities involved include ensuring that the proposed changes align with the regulatory standards set forth in the Offshore Petroleum and Greenhouse Gas Storage Act 2006. The entities must provide comprehensive details of the pipeline route, including coordinates and specific design and construction specifications. They must ensure that the pipeline design and construction comply with international and Australian standards, such as ISO 13628-1 and AS 2885.4, respectively. Additionally, the entities are required to detail the basis of design, including the inside diameter, wall thickness, length, and material grades of the pipeline and riser sections. Furthermore, the application must include general plans and descriptions of pump stations, tank stations, or valve stations and their equipment, as well as details of cathodic protection and hydrate management.
Any breach of the provisions outlined in the Offshore Petroleum and Greenhouse Gas Storage Act 2006 can lead to various civil and criminal consequences. Offences under the Act can result in substantial penalties, with maximum penalties for certain violations reaching up to AUD 1.2 million for individuals and AUD 6 million for corporations. Additionally, the Titles Administrator has the authority to impose administrative penalties, including fines, for non-compliance with the Act. In more severe cases, criminal charges may be pursued, leading to imprisonment for individuals and further financial penalties for corporations. It is crucial for the entities involved to adhere to the requirements and obligations stipulated in the Act to avoid these potential consequences.