Dampier Wash Plant Life Extension

Overview Rio Tinto Limited is seeking Expressions of Interest (EOI) for the Dampier Wash Plant Life Extension. This Scope of Work (SOW) is for EOI purposes only. A detailed scope of work will be issued as part of the project tender in 2027. About The DSL Dampier Wash Plant structure was commissioned in 2005. It is 20m high, steel framed, with suspended concrete slabs and process equipment (screens, centrifuges, classifiers, tanks, etc) used for salt process washing. Purpose The works are intended to extend the operational life of the asset by a further 15 to 25 years, bringing the total life of the structure to 40 to 50 years. Scope The DSL Dampier Wash Plant Life Extension will likely be a program of works over 5 years, inclusive of shutdown and online works. The scope includes: Scaffold construction Temporary works Concrete remediation, including breakout repairs and anodes installation Steel remediation, including compensation plating, blast, paint and member replacement (partial or full) Additional coating protection in challenging areas (Polibrid, Fuze, etc) Removal of process equipment Temporary adjustment of services (electrical and piping), including removal and replacement Conveyor and some mechanical interface works Annual Works The annual works are expected to include: As much online work as possible Shutdown works, with shuts 3 to 5 weeks long Dayshift and nightshift work A combination of concrete and steel remediation each year Instructions to Tenderers The works program structure is intended to be: Tender for all work package years during 2027 Evaluation of the tender and program opportunity during 2027 Stage Gate and award of 2028 works in Q4 2027 Each year of work is intended to include: A period of approximately 6 months for detailed work package planning, engineering, mobilisation and online works in advance of the shutdown A shutdown sometime during July to September Performance evaluation of works in Q4 Next year's package of work price review, confirmation, Stage Gate and award Works are expected to be annual until 2032, however this may vary to suit budget availability, and not all years will have a shutdown. Whilst a program of work is intended, this will be subject to procurement strategy review and tenders. The work packages for each year and scope are intended to be prioritised according to budget availability, structural capacity priorities and accessibility. The Company is considering Early Contractor Involvement options through the next study phase, Feasibility, and tender.