Decommissioning Engineering
Safe, compliant, and tightly controlled removal of existing assets—planned to protect people, schedule, and the structural integrity of what remains.
Remove without compromise
We engineer decommissioning plans that prioritise lifting safety, control measures, and structural integrity at every step. Starting from your operational constraints and site conditions, we determine the most efficient way to uninstall existing assets—sequencing cuts, isolations, and lifts so that loads are managed, risks are reduced, and adjacent structures remain sound.
Methods and outputs
Decommissioning engineering with lift safety, control measures, and structural integrity at the core. Sequenced uninstall procedures, temporary works, and compliant documentation for UKCS/North Sea projects.
Survey & verification
Site walkdowns, point‑clouds, and as‑built reconciliation to confirm interfaces and access.
Engineering analysis
COG and mass updates per removal step; connection checks; FEA/hand‑calc verification of remaining members and lift points; stability/sea‑fastening checks where applicable.
Sequencing & SIMOPS
Step‑wise plans that coordinate with live operations, weather windows, and permit‑to‑work.
Risk management
HAZID/HAZOP sessions, task‑level RAMS, and action tracking to closure.
Controls & assurance
Exclusion zones, tool tethering, lift supervision, trial lifts, and post‑removal inspections.
Field‑ready documentation
Concise procedures with checklists, ITPs, hold/witness points, and sign‑off sheets.
Focussed on delivery
Subco delivers high‑quality engineering work, on demand. We help companies deliver critical packages of work—without the delays, overhead, or commitment of hiring. Whether it’s a capacity or capability gap, we provide defined, fixed‑price solutions that keep projects moving.
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How we deliver
- 1
Fixed‑price workpacks
Clearly scoped decommissioning tasks, review cycles, and acceptance criteria.
- 2
Compliance built in
Documentation aligned to relevant regulations and site procedures (e.g., LOLER/PUWER, CDM, waste regulations, class rules where applicable).
- 3
Practical recommendations
Buildable removal steps, temporary works designs, and reinstatement notes.
- 4
ISO‑aligned processes
ISO 9001 quality and ISO 27001 information security; our client portal provides full visibility from scope to delivery.
- 5
Speed without shortcuts
Rapid site assessment, transparent assumptions, peer review, and sign‑off so projects keep moving.
FAQs
What decommissioning engineering services do you provide?
We deliver removal engineering, reverse installation studies, lift planning, structural assessments for ageing assets, weight management, waste characterisation support, and regulatory documentation — covering topsides, jackets, subsea infrastructure, and pipelines.
Can you support both full removal and partial decommissioning scopes?
Yes. We work across the full spectrum — from complete platform removal and heavy lift engineering to partial decommissioning, such as well abandonment support structures, make-safe modifications, and isolation scope that extends asset life before final removal.
How do you ensure compliance with decommissioning regulations?
All work is delivered in line with applicable UK and international decommissioning regulations. We produce comparative assessments, environmental impact documentation, and engineering justifications that support decommissioning programme approvals — giving operators a clear audit trail from concept through to execution.
