Sample / Offshore module removal
Illustrative content. No actual asset has been assessed.
01 / Purpose and scope
Agree the work needed before selecting a method.
Define the information and engineering work needed to compare removal as one unit with removal in engineered sections.
- Scope
- One redundant topsides module, from preparation and separation through transport and receiving handover.
- Exclusions
- Wells, substructure and unrelated systems are outside this example.
- Decision sought
- Agree the verification and study tasks needed before a preferred removal approach is selected.
02 / Evidence register
Keep the unresolved information visible.
| Evidence topic | Example position | Decision affected | Next action |
|---|---|---|---|
| Weight and contents | Weight report and modification record do not reconcile | Removal unit size and lifting basis | Reconcile equipment, retained contents and changes |
| Structural condition | Available information does not establish all temporary states | Support and restraint during separation | Define the states and information needed for engineering review |
| Isolation boundary | Retained-system interfaces require confirmation | Preparation and separation scope | Reconcile process records with the asset owner’s boundary |
| Receiving route | Acceptance requirements have not been established | Cleaning, packaging, transport and handover | Obtain the intended receiving facility’s information requirements |
03 / Options record
Compare on a common basis.
Both approaches address the same scope and end state. No preferred option or calculated ranking is assigned.
| Approach | Information needed to assess it | Current conclusion |
|---|---|---|
| Removal as one unit | Reconciled weight basis, load path and lifting, transport and landing constraints | Feasibility not established in this example |
| Removal in engineered sections | Section boundaries, temporary states, access, handling and repeated transfers | Feasibility not established in this example |
04 / Actions and next decision
Make the next review specific.
| Item | Action | Responsibility to agree | Required by |
|---|---|---|---|
| 01 | Reconcile weight and configuration | Asset owner with engineering reviewer | Before the options review |
| 02 | Define temporary states and study inputs | Appointed engineering team | Before a removal recommendation |
| 03 | Confirm isolation and preparation boundaries | Asset owner and operating representatives | Before preparation scope is finalised |
| 04 | Establish material acceptance information | Project team and intended receiving facility | Before the material pathway is committed |
No dimensions, loads, durations, costs or acceptance limits are supplied. Project-specific engineering, competent review and applicable approvals remain necessary. This example does not authorise execution.