Variation of Pipeline Licence WA-27-PL (GWF-2) (TV8S9S)

Administered by Department of Industry, Science and Resources

Legislation au C2025G00639 In force Gazette

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COMMONWEALTH OF AUSTRALIA

Sections 226 and 708

Offshore Petroleum and Greenhouse Gas Storage Act 2006

VARIATION OF PIPELINE LICENCE WA-27-PL

(GWF-2) (TV8S9S)

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 vary Pipeline Licence WA-27-PL, dated 6 October 2016 (the Licence), for which:

Woodside Energy (North West Shelf) Pty Ltd

(ACN 004 514 489)

BP Developments Australia Pty. Ltd.

(ACN 081 102 856)

Chevron Australia Pty Ltd

(ACN 086 197 757)

Woodside Energy Ltd.

(ACN 005 482 986)

Japan Australia LNG (MIMI) Pty. Ltd.

(ACN 006 303 180)

Shell Australia Pty Ltd

(ACN 009 663 576)

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

STEVEN ROBERT TAYLOR

DELEGATE OF THE TITLES ADMINISTRATOR

ON BEHALF OF THE COMMONWEALTH-WESTERN AUSTRALIA
OFFSHORE PETROLEUM JOINT AUTHORITY

ROUTE OF THE PIPELINE

The pipeline route is described in the tables hereunder and displayed in the attached map (Attachment 1). The route of the main pipeline described in Table 1 commences at the Lady Nora/Pemberton (LPA) PLET to the Goodwyn Alpha (GWA) PLET, including the tie-in flowlines and spools connecting to the GWA Subsea Isolation Valves as described in Table 2. Additional GWF-4 Echo Yodel system of pipes are detailed in Table 3, commencing from the Yodel Updip Well (YOD05) Xmas Tree Hub Face to the Echo Yodel Manifold Hub Face, Table 4, commencing from the Echo Spur Well (ESA01) Xmas Tree Hub Face to the EYA Manifold Hub Face, and Table 5, commencing from the EYA Manifold Hub Face to the Keast Dockrell (KDA) Manifold Hub Face, each within a corridor of ±200m (± 100m centred on the flowlines). Coordinates are based on Geodetic Datum of Australia (GDA94).

Main Pipeline
	Feature Name	KP*	Easting (mE)	Northing (mN)	Bend Radius (m)
1	LPA PLET (start)	0.0	359 486.48	7 806 936.25
2	TP1A	1.16	360 506.88	7 807 487.22
3	IP1		360 607.97	7 807 541.81	1200
4	TP1B	1.389	360 696.87	7 807 614.58
5	TP2A	2.581	361 619.34	7 808 369.74
6	IP2		361 684.27	7 808 422.89	1200
7	TP2B	2.748	361 755.97	7 808 422.49
8	TP3A	3.721	362 587.08	7 808 971.91
9	IP3		362 652.03	7 809 011.41	1200
10	TP3B	3.873	362 721.46	7 809 042.39
11	TP4A	4.673	363 451.98	7 809 368.48
12	IP4		363 538.22	7 809 406.97	1200
13	TP4B	4.861	363 617.38	7 809 458.49
14	ZRB 1	5.835	364 433.03	7 809 989.28
15	ZRB 2	7.171	365 669.04	7 810 496.32
16	ZRB 3	9.021	367 215.20	7 811 512.14
17	ZRB 4	10.828	368 899.52	7 811 168.98
18	ZRB 5	12.646	370 448.64	7 813 120.32
19	ZRB 6	14.659	371 937.46	7 814 475.26
20	ZRB 7	16.459	373 458.86	7 815 437.22
21	TP5A	16.959	373 822.72	7 815 780.16
22	IP5		374 036.69	7 815 981.83	3200
23	TP5B	17.546	374 210.34	7 816 219.12
24	ZRB8	18.286	374 647.20	7 816 816.12
25	TP6A	18.859	374 886.58	7 817 336.68
26	IP6		374 982.40	7 817 545.04	3800
27	TP6B	19.317	375 052.46	7 817 763.42
28	IP ZRB 9	20.522	375 420.61	7 818 910.92
29	IP ZRB 10	21.822	376 046.65	7 820 050.25
30	TP7A	22.272	376 334.63	7 820 396.03
31	IP7		376 468.88	7 820 557.23	3000
32	TP7B	22.691	376 624.25	7 820 698.18
33	IP ZRB 11	23.622	377 313.90	7 821 323.78
34	IP ZRB 12	25.722	379 128.65	7 822 380.50
35	IP ZRB 13	28.122	381 401.79	7 823 150.46
36	IP ZRB 14	30.522	383 506.70	7 824 303.44
37	IP ZRB 15	32.922	385 379.42	7 825 804.41
38	TP8A	33.55	385 929.99	7 826 105.99
39	IP8		386 298.69	7 826 307.95	5000
40	TP8B	34.388	386 695.94	7 826 445.52
41	GWA-PLET (End)	35.372	387 625.69	7 826 767.47

Table 1. Route of the main pipeline (*KP=Kilometre Point).

Tie-in Flowlines and Spools
Feature Name	Easting (mE)	Northing (mN)
LPA Manifold*	359 467.98	7 806 837.94
SRA Manifold*	366 349.04	7 810 815.00
EYA Manifold*	369 933.46	7 815 196.82
KDA Manifold*	372 751.34	7 814 863.10
DOA Tie-In Skid*	375 825.52	7 819 425.25
GWF-2 Z-Spool (GWA PLET 16” Inboard Hub Face)	387 625.69	7 826 767.47
GWF-2 Z-Spool (MCS 16” Inboard Hub Face)	387 663.64	7 826 737.88
GWF-2 U-Spool (MCS 16” Inboard Hub Face)	387 664.95	7 826 734.10
GWF-2 U-Spool (GWF-1/GWF-2 SSIV 16” Inboard Hub Face)	387 675.21	7 826 701.18

Table 2. Coordinates of the 10” tie-in flowline points and spools (*Italics = not GWF-2 system of pipes).

YOD05 Xmas Tree Hub Face to EYA Manifold Hub Face Flowline
Feature Name	Easting (mE)	Northing (mN)	Bend radius (m)
YOD05 Xmas Tree Hub Face	366 843	7 815 548
TP1A	367 431	7 815 279
IP1	367 530	7 815 234	500
TP1B	367 639	7 815 234
TP2A	369 889	7 815 234
IP2	369 904	7 815 234	30
TP2B	369 913	7 815 223
EYA Manifold Hub Face	369 931	7 815 199

Table 3. Coordinates from the YOD05 Well Xmas tree to the EYA Manifold Flowline.

ESA01 Xmas Tree Hub Face to EYA Manifold Hub Face Flowline
Feature Name	Easting (mE)	Northing (mN)	Bend radius (m)
ESA01 Xmas Tree Hub Face	369 840	7 815 083
TP3A	369 836	7 815 103
IP3	369 834	7 815 117	25
TP3B	369 845	7 815 127
EYA Manifold Hub Face	369 932	7 815 195

Table 4. Coordinates from the ESA01 Well Xmas Tree to the EYA Manifold Flowline.

EYA Manifold Hub Face to KDA Manifold Hub Face Flowline
Feature Name	Easting (mE)	Northing (mN)	Bend radius (m)
EYA Manifold Hub Face	369 935	7 815 194
TP4A	369 984	7 815 133
IP4	370 011	7 815 100	150
TP4B	370 050	7 815 086
TP5A	371 156	7 814 681
IP5	371 199	7 814 665	200
TP5B	371 244	7 814 669
TP6A	372 265	7 814 767
IP6	372 274	7 814 768	30
TP6B	372 282	7 814 763
TP7A	372 378	7 814 712
IP7	372 457	7 814 670	150
TP7B	372 532	7 814 719
KDA Manifold Hub Face	372 747	7 814 862

Table 5. Coordinates from the EYA Manifold to the KDA Manifold Flowline.

SPECIFICATIONS

Design and Construction

The offshore pipeline must be designed and constructed in accordance with Offshore Standard DNV-OS-F101 – Submarine Pipeline Systems (Offshore Pipeline), which is incorporated in its entirety in Australian Standard AS2885.4 – Pipelines, Gas and Liquid Petroleum (Part 4: Submarine Pipelines). Specifically, the design and construction phase of the pipeline must comply with DNV-OS-F101. The flexible flowlines and manifold are designed and constructed in accordance with the current version of the key design standards in Table 6.

Standard	Title
API 17B	Recommended Practice for Flexible Pipe
API 17J	Specification for Unbonded Flexible Pipe
API 17L1	Specification for Unbonded Flexible Pipe Ancillary Equipment
API 17L2	Recommended Practice for Flexible Pipe Ancillary Equipment
API 17P	Recommended Practice for Subsea Structures and Manifolds

Table 6. Key design standards for the Echo Yodel Flexible Flowlines and EYA Manifold.

Basis of Design

The pipeline design is based on the following parameters:

Item	Item Description	Details
1	Design and Construction	Offshore Standard DNV-OS-F101 – Submarine Pipeline Systems (Offshore Pipeline), which is incorporated in its entirety in Australian Standard AS2885.4 – Pipelines, Gas and Liquid Petroleum (Part 4: Submarine Pipelines)
2	Outside diameter of pipe	16” Production Flowline:	KP9.2 - 35.4: 396.8 mm KP0.0 - 9.2: 406.4 mm
3	Wall thickness of pipe (carbon steel)	16” Production Flowline:	KP9.2 - 35.4: 20.6 mm KP0.0 - 9.2: 25.4 mm
4	Minimum Clad Thickness	3.0 mm
5	Length	35.4 km (approximate)
6	Design life	25 years (approximate)
7	Pipeline Material	16” Production Flowline: Manifold Tie-in Spools: 10” PLET/ILTA Piping: Platform Tie-in Spools: 16” PLET/ILTA Piping: Flexible flowlines:	Metallurgically Clad CRA Linepipe Metallurgically Clad CRA Linepipe Metallurgically Clad CRA Linepipe Metallurgically Clad CRA Linepipe Metallurgically Clad CRA Linepipe Unbonded flexible pipes with inner carcass made of duplex (2205) stainless steel
8	Pipeline Grade	DNV-OS-F101 16” Production Flowline: Manifold Tie-in Spools: 10” PLET/ILTA Piping: Platform Tie-in Spools: 16” PLET/ILTA Piping:	Grade 415 (X60) Grade 450 (X65) Grade 450 (X65) Grade 450 (X65) Grade 450 (X65)
9	Maximum Allowable Operating Pressure	30.0 MPa(a)
10	Design Capacity	Upstream of and including ILTAs: Downstream of ILTAs: Upstream of GWA PLET: Downstream of GWA PLET:		14.8 KT/d 21.6 KT/d 21.6 KT/d 21.6 KT/d
11	Maximum Operating Temperature	Upstream of and including ILTAs: Downstream of ILTAs: Upstream of GWA PLET: Downstream of GWA PLET:		113°C 113°C 113°C 84°C
12	Maximum Design Temperature	Upstream of and including ILTAs: Downstream of ILTAs: Upstream of GWA PLET: Downstream of GWA PLET:		119°C 119°C 119°C 110°C
13	Minimum Design Temperature	Upstream of and including ILTAs: Downstream of ILTAs: Upstream of GWA PLET: Downstream of GWA PLET:		-22°C -17°C -17°C -10°C
14	Characteristics of substance proposed to be conveyed	Commingled petroleum (wet gas, ranging 80-87% methane) from LPA, SRA, KDA and DOA.
15	Hydrate Management Strategy	Insulation and MEG Injection
16	Cathodic Protection	Sacrificial cathodic protection system installed on GWF-2 flowline, spools and structures. Full-shell, tapered bracelet type AL-Zn-In alloy anodes installed directly over flowline thermal insulation. Anode inserts directly welded onto doubler plates welded to flowline. Cathodic protection for spools provided by anodes on structures; cathodic protection for subsea structures provided by stand-off, Al-Zn-In anodes installed directly on structural members.

Table 7. Basis of Design Specifications for GWF-2 and GWF-4 system of pipes.

Item	Item Description	Details
1	Internal diameter	10 inches
2	Design capacity	180 MMscf/d
3	Maximum allowable operating pressure	34.5 MPa(a)
4	Maximum design temperature	110°C
5	Maximum operating temperature	104°C
6	Minimum design temperature	-29°C
7	Design life	15 Years

Table 8. Key design parameters for YOD05 to EYA Flexible Flowline.

Item	Item Description	Details
1	Internal diameter	8 inches
2	Design capacity	180 MMscf/d
3	Maximum allowable operating pressure	34.5 MPa(a)
4	Maximum design temperature	110°C
5	Maximum operating temperature	104°C
6	Minimum design temperature	-29°C
7	Design life	15 Years

Table 9. Key design parameters for ESA01 to EYA Flexible Flowline.

Item	Item Description	Details
1	Internal diameter	10 inches
2	Design capacity	300 MMscf/d
3	Maximum allowable operating pressure	34.5 MPa(a)
4	Maximum design temperature	110°C
5	Maximum operating temperature	104°C
6	Minimum design temperature	-29°C
7	Design life	15 Years

Table 10. Key design parameters for EYA to KDA Flexible Flowline.

Item	Item Description	Details
1	Internal diameter header	10 inches
2	Internal diameter branches	7 inches
3	Number of headers / branches	1 / 2
4	Maximum allowable operating pressure	34.5 MPa(a)
5	Maximum design temperature	110°C
6	Maximum operating temperature	104°C
7	Minimum design temperature	-18°C
8	Material Class	HH Trim
9	Design life	15 Years

Table 11. Key design parameters for EYA Manifold.

The GWF-2 Route Map on page 6 is deleted and replaced with the map at Attachment 1.

Attachment 1 – GWF-2 Pipeline Route

Overview

The Offshore Petroleum and Greenhouse Gas Storage Act 2006 (the "Act") was enacted to provide a framework for the regulation of offshore petroleum activities, including the exploration, production, and storage of greenhouse gases, within Australian waters. The Act was introduced to address the need for a comprehensive legislative regime governing the offshore petroleum industry, ensuring the sustainable development of resources while protecting the marine environment. The Act was enacted by the Parliament of Australia, with the objective of facilitating the efficient and environmentally responsible development of offshore petroleum resources. This legislation serves as the primary legal instrument governing offshore petroleum activities in Australia, ensuring that such activities are conducted in a manner that balances economic interests with environmental protection and safety. The Act establishes a regulatory framework for the issuance of permits and licenses, the conduct of exploration and production activities, and the management of environmental impacts associated with offshore petroleum operations.

Scope and Application

The Offshore Petroleum and Greenhouse Gas Storage Act 2006 (the Act) applies to the regulation of offshore petroleum activities and greenhouse gas storage in Australian waters. In this instance, the Act governs the variation of a pipeline licence for the transport of petroleum products, as detailed in the notice. The Act applies to entities holding offshore petroleum titles, which in this case includes Woodside Energy (North West Shelf) Pty Ltd, BP Developments Australia Pty. Ltd., Chevron Australia Pty Ltd, Woodside Energy Ltd., Japan Australia LNG (MIMI) Pty. Ltd., and Shell Australia Pty Ltd. The variation pertains specifically to the pipeline route and design specifications for the GWF-2 system of pipes and associated flexible flowlines and manifolds. The geographic reach of the Act is confined to Australian Commonwealth waters, as evidenced by the involvement of the Commonwealth-Western Australia Offshore Petroleum Joint Authority. The Act does not specify any exclusions, exemptions, or thresholds in this variation notice, but it is subject to the broader regulatory framework established under the Act. Subordinate instruments may further detail specific operational and safety requirements that must be adhered to by the entities involved.

Key Provisions

The key provisions of the Offshore Petroleum and Greenhouse Gas Storage Act 2006 (the "Act") are outlined in the main operative sections. Section 226 provides the authority to vary a pipeline licence, while Section 708 allows for the setting of specific terms and conditions for the operation of the pipeline. In this case, the Delegate of the National Offshore Petroleum Titles Administrator has exercised the power under Section 226 to vary Pipeline Licence WA-27-PL (the "Licence") for the pipeline route specified in the attached map and tables. The Act imposes several obligations on the parties involved in the operation of the pipeline. The pipeline must be designed and constructed in accordance with the Offshore Standard DNV-OS-F101 – Submarine Pipeline Systems (Offshore Pipeline) and Australian Standard AS2885.4 – Pipelines, Gas and Liquid Petroleum (Part 4: Submarine Pipelines). Additionally, the flexible flowlines and manifold must be designed and constructed in accordance with the relevant API standards. The design and construction of the pipeline must adhere to the parameters outlined in the Basis of Design section, including the outside diameter, wall thickness, length, design life, material, grade, and allowable operating pressures and temperatures. Failure to comply with the provisions of the Act or the terms and conditions of the Licence may result in civil or criminal consequences. Under the Act, the Delegate may impose penalties for breaches of the Act or the Licence. The maximum penalty for contravening a provision of the Act is a fine of up to $500,000 or imprisonment for up to five years, or both. For contravening a term or condition of the Licence, the maximum penalty is a fine of up to $100,000 or imprisonment for up to one year, or both. Additionally, any person who causes damage to the pipeline or its infrastructure may be liable for damages under the common law. In summary, the Act provides the framework for the regulation of offshore petroleum pipelines, with specific provisions for the variation of pipeline licences and the setting of terms and conditions. The Act imposes obligations on the parties involved in the operation of the pipeline, including design and construction standards, and provides for civil and criminal penalties for breaches of the Act or the Licence.

Area of Law: Environmental Law; Energy Law
Instrument: Gazette Notice
Concepts: Definitions & Interpretation; Licensing & Registration; Reporting & Disclosure Obligations; Regulatory Standards

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Sourced from the Federal Register of Legislation at 26 August 2026. For the latest information on Australian Government law please go to https://www.legislation.gov.au.

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