Establish the next stage.
Compare options, define the end state and develop the planning basis for your asset.
Options and planningEndura Decommissioning · Australia
Engineering for the end of asset life
Independent decommissioning advice, from options assessment and cost planning through to execution support.
Offshore & onshoreFind the right support
Who we support
Support for the decision in front of your team.
Engage Endura around a defined question, a work package or an ongoing technical role.
Define an executable scope.
Review methods, temporary states and the responsibilities across removal, transport and receiving.
Engineering and interfacesUnderstand the estimate basis.
Trace quantities, methods and assumptions into the engineering inputs behind cost and schedule.
Cost and schedule supportClarify the evidence required.
Map applicable obligations, submission requirements and the records needed for the next review.
Evidence and pathways01 / Expertise
Specialist input at each stage of decommissioning.
Engage Endura for a defined study, a specific engineering question or support across a wider programme. The scope, interfaces and required outputs are agreed at the outset.
01
Options and planning.
Comparative assessments, business cases and decommissioning plans that connect the asset boundary to the required end state.
- Decision criteria and options comparison
- Business-case findings and recommendations
- Programme structure and close-out pathway
02
Engineering, cost and schedule.
Engineering development and review of the quantities, assumptions and dependencies behind a proposed scope.
- Removal concepts and constructability considerations
- Basis-of-estimate inputs and quantity review
- Schedule logic and marine or disposal interfaces
03
Contracting and delivery support.
Contracting strategy and owner’s engineering support, with technical responsibilities and handovers made explicit.
- Work packages and contract-model considerations
- Interface registers and tender strategy
- Method review and client-representative support
04
Regulatory pathways and asset evidence.
Pathway mapping and documentation review aligned to the jurisdiction, asset and decision stage.
- Obligation and submission pathway mapping
- Source-register review and evidence tracking
- Documentation gaps ranked by decision impact
Define the discussion
Find a starting point for your scope.
Select the asset setting, the decision ahead and the records available.
A useful starting point
Relevant support
Potential outputs
Useful starting records
Relevant services
A starting point for discussion. The scope and deliverables are agreed after review of the project context.
Removal method and temporary states.
Connect condition, weight and inspection evidence to the assumptions behind a removal concept.
Explore the relevant supportFollow the evidence
Review output: removal assumptions and temporary-state review scope.
Illustrative asset preview
Drag horizontally to orbit. Use + / − to zoom. Keyboard: arrows to rotate, R to reset. Ctrl + scroll zooms the model.
Static asset viewThe interactive model loads as this section comes into view, or select Start 3D explorer.
Initialising engineering model
Active modelOffshore platform
Selected evidence
Read evidence detail Structural Data
Removal method, access, lifting, temporary support and sequence.
Camera
Zoom
View
Asset explorer
A model with a purpose.
See where records influence scope, method and execution. Select a domain to connect the asset to its evidence requirements.
Start the model to explore its evidence domains.
Illustrative scores / 100
Illustrative documentation coverage
Select a chart row or model hotspot to inspect the evidence and the decision it influences.
Selected domain
38
Structural Data
Critical gap- Decision influence
- First evidence action
0 to 49 · Critical gap50 to 69 · Moderate70 to 100 · Good coverage
Illustrative cutaway, not to scale. The scene does not represent a water depth or a verified removal sequence. Synthetic example, not an assessment of an actual asset. These scores do not measure structural integrity, safety, completion or an accounting provision. Both asset views use the same illustrative evidence set.
Use the model to understand the evidence. Bring the actual asset to the discussion.Discuss an evidence review Open dedicated explorer
The practice
Independent advice. Direct technical involvement.
Endura brings execution experience into front-end planning and engineering review.
Led by Jed van Iersel, the consultancy supports operators and delivery teams where uncertain scope, inherited records or unresolved interfaces are preventing progress.
Jed’s work spans front-end planning, offshore removal, marine interfaces and close-out across international decommissioning environments.
Informed by execution
The method has to work beyond the study.
Removal concepts depend on the temporary states, marine interfaces and receiving conditions as well as the final lift or cut. These constraints belong in the planning and cost basis.
Explore method developmentFrom offshore recovery to onshore dismantling.
Selected team experience from previous roles.
Removal and transport
Load transfer, transport assumptions and receiving arrangements.
Mooring and anchor recovery
Recovery sequence, handling constraints and material condition.
Demolition and disposal
Removal sequence, segregation and receiving-facility requirements.
04 / Engineering approach
The engineering behind the decisions.
The method connects the asset record to temporary states, interfaces and the planning basis. Explore the dependencies and the decisions they affect.
Planning dependencies
The information behind a removal method.
Condition, weight and interfaces inform the engineering basis.
Three evidence inputs feed the removal-method review. That review informs technical studies and the planning basis.
Input 01
Condition & configuration
Current condition, connections and modification records.
Input 02
Weight & inventory
Weight basis, retained contents and uncertainty.
Input 03
Handling & receiving
Access, transport assumptions and receiving conditions.
Engineering review
Removal method & temporary states
Review the load path, release sequence and interfaces.
Read the temporary-state noteInforms
Technical study inputs
Lift, support and transport studies.
Informs
Planning basis
Cost and schedule assumptions; items still to verify.
Illustrative planning dependencies. The method and acceptance criteria require project-specific engineering and verification.
Explore four engineering decisions
Temporary support
The load path changes during removal.
Evidence
Current structural condition, connections and proposed cut sequence.
Decision affected
Support requirements while permanent connections are removed.
Before commitment
Confirm temporary states through project-specific engineering review.
What the work produces
Defined scope. Documented technical basis.
The deliverable set follows the agreed engagement. Findings, source records, assumptions and unresolved items stay visible for the people taking the work forward.
Study report
Options, assessment findings, limitations and recommended next actions.
Technical basis
Scope boundaries, assumptions, methods and the interfaces affecting execution.
Commercial inputs
Cost and schedule basis, work packaging and technical tendering inputs.
Action plan
Priorities, responsibilities, dependencies and information still required.
Follow an illustrative decision from its initial question to the supporting brief.
Separate platform offering
decomm.ai
Asset documentation intelligence for decommissioning.
Explore how inherited records and documentation gaps can inform the engineering basis. A walkthrough establishes the available functionality and scope.
decomm.ai is presented separately from Endura’s consultancy services. The public demonstration uses illustrative data and does not calculate an accounting provision.
Explore decomm.aiTechnical library
Engineering knowledge and references.
Cost and estimate basis
The evidence behind a defensible closure estimate
Connect the asset record to quantities, methods and assumptions that another reviewer can follow.
Read technical note Removal engineeringThe temporary state can govern the lift
Examine the transitions that matter before a structure is fully released.
Read technical note Scope and interfacesClosure decisions depend on the handovers
Define the remaining obligations and evidence across removal, transport and receiving facilities.
Read technical noteLooking for public industry context? Browse selected Australian offshore regulatory records.
Discuss your project
Tell us about the asset, the scope and the timing.
Start with the question your team needs to resolve and the information available.