Preliminary Engineering, Scope and Execution Readiness 

Sedgman helps clients convert early project direction into the preliminary engineering definition needed to support feasibility and project development decisions. We define scope, equipment assumptions, layouts, execution strategies and schedule inputs, providing a clear understanding of project requirements, key interfaces, constraints and critical decisions before advancing to the next phase. 

A strong feasibility study requires more than a preferred technical solution; it needs enough engineering definition to support credible project and investment decisions. Many project cost overruns and schedule delays can be traced to inadequate front-end definition. Sedgman helps clients establish the engineering clarity required to understand what will be built, what it will take to deliver, and where the risks remain before major capital commitments are made.  

We help clients translate project objectives into a defined basis for scope, equipment selection, plant layouts, infrastructure requirements and execution planning. This provides study teams the practical detail needed to assess cost, schedule, risk and project readiness. The result is greater confidence in project assumptions before advancement to investment approval.  

Sedgman’s teams include specialists with both engineering design and operational experience. This enables us to develop solutions that consider not only how facilities should be built, but how they will be commissioned, operated, maintained and optimised over their entire lifecycle. This includes preliminary engineering and scope definition, equipment and design specifications, process and non-process infrastructure layouts, project execution planning and scheduling inputs. Because Sedgman’s expertise spans design, project delivery, operations and optimisation, engineering decisions can be evaluated against real-world construction, commissioning and operating requirements from the earliest stages of development.  

By considering interfaces, constructability, operability, maintainability, environmental conditions and closure expectations before detailed engineering begins, Sedgman helps clients avoid under-defined studies and late surprises. The result is a well-defined and packaged study documentation that supports approvals, investment review and next-step planning. This helps clients understand what has been defined, what remains open and which decisions are required before progressing further. Our objective is simple: give clients visibility of what is known, what remains uncertain and what actions are required, reducing the likelihood of costly surprises during engineering, procurement, construction and commissioning.  

Outcomes We Focus On

Business Outcomes:

  • Greater confidence in project investment decisions.  
  • Reduced execution, cost and schedule risk.  
  • Improved capital efficiency through better project definition.  
  • Stronger project readiness before detailed engineering and procurement.
  • Better alignment between project objectives, delivery strategy and operational requirements.  
  • Fewer surprises during project execution and commissioning.  

Technical Outcomes:

  • Clearly defined scope, assumptions and interfaces.  
  • Better integration of process, infrastructure and execution planning.  
  • More practical equipment, layout and design decisions.  
  • Improved constructability, operability and maintainability outcomes.  
  • Stronger cost, schedule and risk inputs for project development.  

What We Deliver

We translate study objectives into a clear engineering basis for the next project decision gate. This includes defining scope inclusions and exclusions, assumptions, site constraints, interfaces, discipline inputs and the level of technical definition needed to support cost, schedule, risk and value assessment. Clear scope definition is fundamental to effective project governance. By identifying assumptions, exclusions, interfaces and uncertainties early, Sedgman helps reduce scope creep, minimise ambiguity and improve project control throughout later phases. 

We develop preliminary equipment and design specifications that connect the process basis with practical engineering definition. This can include equipment lists, sizing inputs, package assumptions, design criteria, discipline requirements, vendor or technology assumptions, and the documentation needed to support study progression. We engage with equipment vendors to ensure alignment of design intent and testwork requirements for process warranties. Equipment selections and design assumptions are assessed not only for technical suitability but also for constructability, procurement lead times, installation complexity, operational reliability and long-term maintainability.  

We support early execution planning and scheduling, including sequencing logic, implementation considerations, long-lead item inputs, construction and logistics considerations, and schedule alignment between engineering, procurement, construction, commissioning and operational readiness. Our teams identify critical path execution activities and mitigation plans to support confidence in execution timelines. Early execution planning enables project teams to identify delivery risks before they become critical issues, improving confidence in construction sequencing, contractor strategies, procurement pathways and commissioning readiness.  

We develop preliminary process infrastructure layouts that bring flowsheet intent, equipment assumptions, materials handling, access, maintenance and operating requirements into practical and material-efficient spatial arrangement. The operating experience of our teams ensure designs as tested for maintenance access and operational requirements including future expansions, before designs are locked in and costly to change. Effective layouts influence more than construction efficiency. They can significantly affect maintenance access, operational productivity, safety performance, shutdown planning, future expansions and long-term operating costs.  

We help define non-process infrastructure requirements and layouts — considering influence feasibility, cost, constructability, operations and approval conditions. This can include supporting infrastructure, utilities, water and wastewater facilities, workshops, roads, power distribution, site access and other project-specific facilities. Infrastructure planning also considers environmental obligations, water management requirements, energy infrastructure, rehabilitation objectives and future closure needs to support long-term project sustainability.  

We package scope definition, equipment assumptions, layout inputs and execution planning into clear study documentation that supports approvals, investment review and next-step planning. This helps clients understand what has been defined, what remains open and which decisions are required before progressing further. Better engineering definition enables more reliable capital cost estimating, clearer execution strategies and stronger prioritisation of investment decisions, supporting improved capital efficiency throughout project development.  

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