Commissioning & Decommissioning

Commissioning team on site
Niger Delta Engineering Limited

Commissioning &
Decommissioning

Ensuring seamless transition from construction to operation, and providing safe, compliant, and environmentally responsible end-of-life asset restoration.

100%
Safety Compliance
On & Offshore
Project Delivery
Full Cycle
Asset Services

● Our Approach

Lifecycle Excellence

We manage your asset’s most critical phases — ensuring safe start-ups and responsible closedowns.

🚀
Flawless Start-ups

Meticulous system integration testing (SIT) and site acceptance testing (SAT) to ensure systems meet operational requirements prior to introduction of hydrocarbons.

📦
Safe Divestment

End-to-end decommissioning strategies, including regulatory compliance, subsea and topside removal, and permanent plug and abandonment (P&A).

🛡️
Environmental Integrity

Commitment to environmental preservation through rigorous waste management, safe disposal of hazardous materials, and site remediation to its natural state.

● Service 01

Pre-Commissioning & Commissioning

We bridge the gap between construction completion and facility operation, verifying that all systems are built and function perfectly according to design specifications.

01
System Integration Testing

Comprehensive checks across electrical, instrumentation, and mechanical systems to ensure safe interoperability.

02
Hydrotesting & Cleaning

Piping network flushing, chemical cleaning, and hydro-testing to guarantee integrity before full operation.

03
Start-Up Assistance

Seamless support during the initial introduction of process fluids, closely monitoring responses and ensuring safety protocols.

SAT & FATLoop ChecksHydrotestingStart-Up
Pre-Commissioning & Commissioning
Testing & Verification
Process Validation & Start-up
Operational Performance

● Service 02

Process Validation & Start-up

Ensuring process facilities achieve nameplate capacity safely and reliably, through rigorous testing and comprehensive handover documentation.

01
Operational Readiness

Preparation of standard operating procedures (SOPs), maintenance manuals, and personnel training prior to handover.

02
Performance Testing

Validating process parameters, output yields, and equipment efficiency under real operating conditions.

03
Handover Management

Formal transition from project execution to the asset owner, including fully updated 'As-Built' documentation.

Readiness ReviewsPerformance RunsAsset HandoverSOP Development

● Service 03

Decommissioning & Site Restoration

We provide safe, regulatory-compliant solutions for the retirement of matured oil and gas assets, restoring the environment to its original state.

01
Pipeline Flushing & Purging

De-oiling, hydrocarbon freeing, and nitrogen purging of process equipment and pipelines.

02
Plug and Abandonment (P&A)

Permanent sealing of wells in accordance with stringent regulatory standards to prevent environmental leakage.

03
Site Clearance

Complete removal of surface facilities, foundation break-up, and comprehensive soil remediation.

Purging & VentingWell AbandonmentSoil RemediationSite Clearance
Decommissioning & Site Restoration
Asset Retirement
Offshore & Marine Decommissioning
Offshore Decom Solutions

● Service 04

Offshore & Marine Decommissioning

Specialized strategies required for complex offshore environments including jacket dismantling, subsea recovery, and heavy lift vessel coordination.

01
Topside & Jacket Removal

Engineering lifting studies, structural severing, and heavy lifting operations to safely extract jackets and topsides.

02
Subsea Infrastructure Recovery

Safe extraction of subsea manifolds, umbilicals, and flowlines from the seabed with minimal environmental disturbance.

03
Marine Logistics

Coordination of barges, anchor handling tugs, and heavy lift marine vessels for transport to onshore disposal yards.

Topside RemovalJacket DismantlingHeavy Lift ShippingSubsea Recovery

● Service 05

Waste Management & Compliance

Ensuring strict adherence to environmental regulations during the disposal and recycling of decommissioned asset materials and toxic substances.

01
Material Recycling

Scrap structural steel, piping, and equipment recycling in collaboration with certified onshore disposal facilities.

02
Hazardous Waste Handling

Safe identification, containment, and disposal of NORM (Naturally Occurring Radioactive Material), asbestos, and chemical residuals.

03
Regulatory Compliance

End-to-end interfacing with environmental agencies, submitting closure plans, and securing final release certifications.

NORM HandlingSteel RecyclingAsbestos RemovalEnvironmental Certifications
Waste Management & Compliance
Environmental Responsibility
CTA Background

Ready to Start Your
Asset Lifecycle Journey?

From seamless project commissioning to safe asset decommissioning, NDEL is your trusted partner.