Harriet Alpha Platform

Harriet Alpha Deconstruction and Disposal Study

Onslow, WA
1 month
Completed 2023


Liberty Industrial was engaged by Santos to undertake a deconstruction and disposal study of the Harriet Alpha platform. The Harriet Alpha platform was put into use in 1986 and has halted production in 2013. Since the fourth quarter of 2014, the site has remained as an unmanned facility. Our team’s involvement in the study produced for Santos involved the evaluation of potential sites in Australia for the Harriet Alpha platform’s deconstruction and disposal and we developed a plan for its transportation and dismantling and estimated the schedule and costs for the project.


  • The immense size of the Harriet Alpha platform presented significant difficulties for the deconstruction and disposal works to be taken which included logistical issues and the lack of an adequate facility for onshore deconstruction activities.

Robust Solutions/Exceptional Outcomes

Robust solutions

Liberty Industrial conducted a thorough study which compared various locations in Australia for the deconstruction and disposal of the platform and provided multiple approaches to how the transportation, dismantling and disposal works could be carried out, with methodologies outlined and project cost estimations included in the study.


Exceptional outcomes

Our Liberty Industrial team completed the study successfully within the agreed upon one-month timeframe on behalf of our client Santos.

Value Add


Closure Consulting

Long-term closure planning, budgets and redevelopment strategies for redundant sites, including Early Contractor Involvement and detailed estimates.


Demolition Simulation and Modelling

With exclusive license to demonstrate using Extreme Loading® for Structures (ELS) software developed by Applied Sciences International (ASI).



Use of best approach demolition and dismantling such as explosive using world class fleet, safety and engineering methodologies in explosives and rigging.


Asset and Resource Recovery

Comprehensive waste and recycling management to contribute to the circular economy to extend the lifecycle of materials.


Managing PFAS in Site Closure Remediation


Bioremediation for Closure


Demolition and recycling phase completed for first major closure project for Rio Tinto at Argyle Diamond Mine, WA.

integrated capability responsible decommissioning

decommissioning closure and asset liability consulting

consulting risk management engineered solutions 3d simulation

and simulation liberty modelling dismantling and asset

dismantling and asset recovery synchronised safety

deconstruction resource recovery and recycling expert delivery

high expert industrial delivery reach consulting

expert delivery high reach explosive induced collapse

collapse specialised contracting decontamination

decontamination cleaning remediation environmental stewards

stewards risk mitigation and management waste disposal

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