COMMONWEALTH OF AUSTRALIA
Sections 226 and 708
Offshore Petroleum and Greenhouse Gas Storage Act 2006
VARIATION OF PIPELINE LICENCE WA-31-PL
(LAMBERT DEEP PIPELINE) (08-2024)
I, GRAEME ALBERT WATERS, the National Offshore Petroleum Titles Administrator, on behalf of the Commonwealth–Western Australia Offshore Petroleum Joint Authority hereby vary Pipeline Licence WA-31-PL, dated 9 December 2021 (the Licence), for which:
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)
are the registered titleholders, as set out below.
The variation takes effect on the day on which this notice of variation is published in the Australian Government Gazette.
Made under the Offshore Petroleum and Greenhouse Gas Storage Act 2006
of the Commonwealth of Australia
GRAEME ALBERT WATERS
TITLES ADMINISTRATOR
ON BEHALF OF THE COMMONWEALTH–WESTERN AUSTRALIA
OFFSHORE PETROLEUM JOINT AUTHORITY
- 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 framework for the regulation of offshore petroleum and greenhouse gas storage activities. This Act was introduced to address the need for a comprehensive legal structure governing offshore operations, ensuring environmental protection, safety, and efficient resource management. The Act is administered by the National Offshore Petroleum Titles Administrator on behalf of the Commonwealth–Western Australia Offshore Petroleum Joint Authority. The policy objective of this Act is to facilitate the orderly and responsible development of offshore petroleum resources while safeguarding the environment and ensuring the safety of operations. This specific variation of the Lambert Deep Pipeline Licence, published in the Australian Government Gazette, is a practical application of the legislative framework to adjust operational details, reflecting changes in pipeline specifications and design to comply with updated safety and operational standards.
This variation, effective from the date of publication, pertains to the Lambert Deep Pipeline Licence, adjusting its route, design, and construction specifications. The new route details commence at the Universal Connection System connector face on the flexible flowline downstream of the Lambert Deep manifold and conclude at the flange face upstream of the riser emergency shutdown valve on the Angel Platform. The pipeline specifications have been updated to reflect adherence to international standards such as ISO 13628-1 and Australian standards like AS 2885.4. These changes aim to enhance the operational efficiency and safety of the pipeline, ensuring it meets the stringent regulatory requirements set forth by the Offshore Petroleum and Greenhouse Gas Storage Act 2006.
Scope and Application
The Offshore Petroleum and Greenhouse Gas Storage Act 2006 applies to the variation of Pipeline Licence WA-31-PL, affecting the Lambert Deep Pipeline. This Act operates at the Commonwealth level, specifically under the authority of the National Offshore Petroleum Titles Administrator on behalf of the Commonwealth–Western Australia Offshore Petroleum Joint Authority. The legislation governs the modification of pipeline routes, specifications, and operational parameters within Australia’s offshore petroleum sector. The variation of the Lambert Deep Pipeline licence impacts the registered titleholders, 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 changes include modifications to the pipeline route, design and construction specifications, and the basis of design for the pipeline system. This variation is set to take effect on the day it is published in the Australian Government Gazette and is subject to the Act’s stipulations regarding offshore petroleum activities and the management of greenhouse gas storage.
Key Provisions
The variation of the Pipeline Licence WA-31-PL, as outlined in the Gazette, brings several key changes to the operational parameters of the Lambert Deep Pipeline. Primarily, Section 226 (1) of the Offshore Petroleum and Greenhouse Gas Storage Act 2006 mandates the modification of the pipeline route, now starting from the Universal Connection System (UCON) connector face downstream of the Lambert Deep manifold and ending at the flange face upstream of the riser emergency shutdown valve (RESDV) on the Angel Platform. This variation, effective from the date of its publication in the Australian Government Gazette, also stipulates that the pipeline route corridor extends ± 40 meters either side of the provided route. The specific coordinates and features of the pipeline route are detailed in the attached route map and table.
Under Section 226 (2), the variation mandates that the pipeline must be of flexible construction, conforming to the international standard ISO 13628-1 for subsea production systems and the Australian standard AS 2885.4 for the rigid topside piping. The design and construction specifications are updated to reflect the new pipeline standards, including detailed measurements of the inside diameter, wall thickness, length, and material grade of the pipe and riser sections. Additionally, the design life, construction method, and pressure specifications are revised to ensure compliance with the updated standards.
The obligations imposed by this variation include adherence to the new pipeline specifications, which dictate the use of specific materials and construction techniques. Titleholders must ensure that the pipeline is designed and constructed according to the updated standards, with particular attention to the flexibility, strength, and durability of the pipeline. This involves meticulous planning and execution to meet the stringent requirements set forth in the Gazette.
Failure to comply with the provisions of the varied Pipeline Licence WA-31-PL can result in severe consequences. Under Section 708 of the Offshore Petroleum and Greenhouse Gas Storage Act 2006, breaches of the licence conditions can lead to enforcement actions. These may include fines, cancellation of the licence, or other penalties as deemed appropriate by the National Offshore Petroleum Titles Administrator. The maximum penalty for non-compliance with the Act can amount to significant financial repercussions, underscoring the importance of strict adherence to the specified requirements.