Case Studies

OKHA RTM Wire Rope Change

FPSO 5.5” Reconnection Wire Rope Replacement


Woodside Energy Limited

Overview
AEC was engaged by Woodside Energy Ltd (WEL) to develop a procedure for the replacement of the 5.5” diameter x 84m long reconnection wire assembly located within the Riser Turret Mooring (RTM) of the Okha FPSO, which was approaching the end of its working life. The rope had previously been replaced using a subsea diving spread, however, an alternative was sought to minimise risks, mobilisation time and expenditure. The weight of the rope assembly including fittings was 6.7t.

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Ichthys Platform Lifts

Inpex Ichthys Cryogenic Tanks Platform Lifts


Laing O’Rourke Australia Pty Ltd

Overview
Construction of Inpex’s Ichthys LNG Facility at Blaydin Point, Northern Territory is ranked among the most significant oil and gas projects in the world. AEC was engaged by Laing O’Rourke to undertake rigging design and lift engineering for the four most challenging lifts on this mega-project.

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KGP DOMGAS Flare Changeout

Karratha Gas Plant – Emergency Domgas Flare Tips Changeout


Woodside Energy Limited

Overview
AEC was engaged by Woodside to formulate a lift plan to facilitate the changeout of the flare tips on the Karratha Gas Plant Domgas Emergency flare tower. The flare tower was designed in 1983 and incorporated sheaves and guide rails to facilitate changeout of the flare tips. However, some of the procedures did not meet current Woodside lifting requirements and some crucial information such as the weight take off could not be found.

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Wattle Grove Shopping Centre

Wattle Grove Shopping Centre


Devwest Securities Pty Ltd & Whyte Constructions

Overview
AEC was engaged by Devwest Securities Pty Ltd to undertake the structural design for a $5.4m shopping centre development in Wattle Grove, Western Australia. Whyte Constructions engaged AEC to undertake site inspections during construction.

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Cape Lambert Port B Temporary Works

Cape Lambert Port B Temporary Works


John Holland Group Pty Ltd

Overview
AEC was engaged by JHG to design the temporary bracing, personnel access platforms, walkways and workboxes for construction of the Cape Lambert Port B Iron Ore Export Wharf.

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Installation of Car Dumping Bins for Roy Hill Project

Installation of Car Dumping Bins for Roy Hill Project


Civmec Pty Ltd

Overview
AEC was engaged by Civmec to design 3 lifting points to facilitate the installation of 4-off 92t car dumping bins for use at the Roy Hill mine site in the Pilbara region of Western Australia. Civmec undertook the fabrication of the car dumping bins at their Henderson Fabrication Facility in Western Australia

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Honeywell PNG LNG MTCS & Local Equipment Rooms

Honeywell PNG LNG MTCS & Local Equipment Rooms


Honeywell Pty Ltd

Overview
AEC was engaged by Honeywell to complete the structural design and provide full time fabrication support for multiple Local Equipment Rooms (LERs) and a Marine Terminal Control Station (MTCS). The units were fabricated in Maddington and Hazelmere

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Falling Ice Mitigation Measures for Pluto LNG Plan

Falling Ice Mitigation Measures for Pluto LNG Plan


Woodside Energy Limited

Overview
AEC was engaged by Woodside to investigate potential mitigation measures to prevent damage to personnel, equipment and instrumentation due to falling ice at the Pluto LNG Gas Plant on the Burrup Peninsula, Western Australia.

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Gorgon Marine Loading Arm Installation Project

Gorgon Marine Loading Arm Installation Project


Kellogg Joint Venture Gorgon (KJCG) / Camco Engineering Pty Ltd.

Overview
AEC was engaged by KJVG via Camco to perform the full range of feasibility studies, vessel selection, detailed lift planning and detailed design of all rigging and installation aids for the installation of ten (10) Marine Loading Arms (MLA) for the Gorgon Gas Project.

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Cliff Head A – HWU Structural Design & Installation

Cliff Head A – HWU Structural Design & Installation


Roc Oil WA Pty Ltd

Overview
AEC was engaged by Roc Oil to perform detailed design, fabrication support and installation engineering of a bi-directional skidding system for a temporary hydraulic work over unit (HWU) and laydown area onto the Cliff Head A platform off the coast of Dongara, Western Australia. A stick build HWU was preferred over the use of a jack-up rig from a cost viewpoint.

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KGP Marine Berths – Miscellaneous Projects

KGP Marine Berths – Miscellaneous Projects


Woodside Energy Limited

Overview
AEC have been consistently engaged by Woodside to provide structural engineering and lifting/rigging design services for various maintenance projects on Berths 1, 2 and 3. A non-exhaustive list is provided below. Over the last 10 years, AEC has a substantial history of work performed directly for:
• KGP Storage & Loading Facility Engineering Team
• KGP Major Maintenance Team (MMT)
• Production Projects Group (PPG)

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KGP LPG Flare Tower Guy Wire Replacement

KGP LPG Flare Tower Guy Wire Replacement


Woodside Energy Limited (Karratha Gas Plant)

Overview
AEC was engaged by Woodside to design and produce structural detail drawings of the lower guy wires adapter plates and assess the capacity of the replacement guy wires and prepare guy wire change-out procedures.

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KGP Berth 3 - Propane Marine Loading Arm Refurb Project

KGP Berth 3 - Propane Marine Loading Arm Refurb Project


Woodside Energy Limited

Overview
Woodside engaged AEC to perform detailed lift planning and design of rigging and installation aids for the removal and replacement of the refurbished Propane Marine Loading Arm (MLA), Z-3501.

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Havila Harmony –Mezzanine Deck and Reel Frame Design & Installation

Havila Harmony –Mezzanine Deck and Reel Frame Design & Installation


Petroleum Development Consultants Pty Ltd (PDC)

Overview
AEC was engaged by PDC to perform detailed design and site engineering for a mezzanine deck, deck grillage and other structures for the MV Havila Harmony installation support vessel. The vessel was commissioned for installation of subsea infrastructure for the Puffin Oil Field in the Timor Sea.

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Northern Endeavour FPSO Crane Boom Change-out

Northern Endeavour FPSO Crane Boom Change-out


Woodside Energy Limited

Overview
AEC was engaged by Woodside to perform conceptual and detailed engineering for the first ever large crane boom change-out on an on-station FPSO in Australia, without the use of a second crane or construction barge.

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North Rankin “A” – Drill Derrick Deconstruction Project

North Rankin “A” – Drill Derrick Deconstruction Project


Woodside Energy Limited

Overview
Woodside engaged AEC to perform engineering studies, detailed design, lift-planning and 5-months of site- supervision for the dismantling and removal of the redundant 60m high, 200-tonne steel drilling derrick on North Rankin “A” offshore production platform.

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Pluto Site A Flare Tip Replacement

Pluto Site A Flare Tip Replacement


Woodside Energy Limited

Overview
AEC was engaged by Woodside Energy Ltd (WEL) to perform detailed design, fabrication support, rigging design, lift planning and engineering for the replacement of Pluto (Onshore) Site A “Boil Off Gass” (BOG) flare tips.

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Further Information

Contact Alliance Engineering Consultants for more information
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