Rigs lifting items off the Gladstone Air Separation Unit Plant

Gladstone Air Separation Unit Plant Demolition

Gladstone, QLD
Air Liquide Australia Pty Ltd
4 months
Completed 2021


Air Liquide commissioned Liberty Industrial to demolish and salvage the Gladstone Air Separation Unit (ASU) Plant and other site facilities that produced liquid oxygen and nitrogen. The ASU Plant was to be sent to India for COVID-19 relief. The ASU Plant was located within Rio Tinto’s fully operational Yarwun Refinery and required careful planning to coincide with movements of personnel, plant and equipment within a live facility.


  • The project required completion in a short timeframe at the height of the 2021 global pandemic, which was further complicated by selected shipping dates for the salvage works.
  • Border restrictions led to a shortage of skilled labour and our team were required to source local sub- consultants to undertake most of the work.
  • To meet international shipping standards and reassembly in the destination country. All salvage items required highly considered methodologies for packaging.
  • An extensive - and unexpected - number of wet days added to the challenge of meeting the short delivery timeframe.

Robust Solutions/Exceptional Outcomes

Robust solutions

  • Liberty overcame the challenges through diligent planning, engineering and the successful utilisation of our extensive contractor network. We successfully mobilised and managed a team of highly qualified and experienced local sub-contractors to undertake the specific scope of works.
  • A highly detailed program of works was developed before project commencement to meet the critical dates for salvage works and overall project completion. Senior management was actively involved in the project to address and mitigate the challenges imposed by COVID-19 restrictions.
  • The 45m tall cold box was diligently decommissioned, disassembled and packed ready for sea freight to a high standard for reassembly.


Exceptional outcomes

Comprehensive planning engineered solutions and optimum utilisation of our broad subcontractor network paved the way for delivery of this project on time, on budget and as per the client’s expectations.

Value Add


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.


Decontamination and Industrial Cleaning

Designing engineered solutions for decontamination such as removal of asbestos, heavy metals, PCBs, dioxins, PFAS and NORMs.


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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