Commissioning & Decommissioning Services for Oil & Gas Facilities

Safe startup. Structured shutdown. Zero compromise.

At Harvel Engineering & Energy Ltd, we specialize in Commissioning & Decommissioning services that ensure your oil & gas facility transitions smoothly—whether you're launching a new processing unit or retiring an aging asset.

Our certified teams deliver technical precision, regulatory alignment, and operational confidence across every phase of startup and shutdown.

[image of Harvel engineers conducting pre-startup checks on a new oil processing unit]

Our Commissioning scope

Systemisation & boundary definition (Level 1–4 break-down)
Factory acceptance testing (FAT) & site acceptance testing (SAT)
Flushing, chemical cleaning, lube-oil conditioning (5 µm NAS 6)
Leak, hydrostatic, pneumatic, tightness & function tests
DCS/SIS loop checks, cause-&-effect validation, cyber-security audit
Rotating equipment run-in, vibration & performance curves vs OEM spec
Relief & blow-down valve certification, PSV pop tests
Instrument calibration (ISO 17025) & thermography
Ready-for-start-up (RFSU) & ready-for-introduction-of-hydrocarbons (RFIH) sign-off
DPR, NMDPRA & insurance dossier compilation
Operations readiness & start-up support (OSBL, camp, labs)

Decommissioning that leaves no footprint

When the field reaches economic limit, Harvel reverses the reel:

De-inventory, nitrogen/helium purging, vapor freeing to <10 % LEL
Hazardous waste characterisation, manifesting & ON-SITE treatment where feasible
Structural dismantlement by reverse-sequence lifting plans
Pipeline isolation, pigging, foam filling or grouted abandonment
Seabed clearance & trawl-sweep verification for offshore assets
Materials recovery & inventory for re-use (average 14 % rebate to client)
Site remediation to DPR Tier 1 & 2 standards
Final abandonment report & NOSDRA relief letter

What We Deliver

Our services are engineered for safety, compliance, and performance:

Pre-Commissioning & Commissioning – System flushing, loop checks, functional testing, and startup sequencing for mechanical, electrical, and control systems.
Operational Readiness & Handover – Final documentation, training, and structured transfer to client operations teams.
Decommissioning & Asset Retirement – Safe isolation, dismantling, and disposal planning in line with DPR and international standards.
Regulatory Compliance & Audit Support – Full documentation and inspection readiness for SON, DPR, and environmental agencies.
OEM Coordination & Warranty Activation – Seamless integration with global vendors for startup support and warranty validation.

[image of Harvel technicians performing loop checks and instrumentation calibration]

Why Harvel Engineering & Energy Ltd?

Global OEM Partnerships – We commission systems from ABB, Honeywell, Yokogawa, and other Tier 1 vendors.
Certified Oversight Teams – Commissioning engineers, QA/QC specialists, and HSE officers with oil & gas experience.
Full EPCM Integration – We manage commissioning as part of our engineering, procurement, construction, and maintenance workflows.
Remote & Marine Logistics – We mobilize to swamp locations, coastal terminals, and inland depots with precision.

[image of Harvel-branded commissioning team arriving at a coastal facility]

Built for Operational Continuity

Commissioning isn’t just a technical milestone—it’s a business-critical transition. Harvel’s structured approach ensures every system is validated, every risk mitigated, and every stakeholder aligned.

Explore our commissioning philosophy in [Ensuring Operational Readiness in Oil & Gas Facility Startups].

Results That Matter

100% regulatory compliance across recent commissioning projects
30% faster startup timelines through integrated workflows
Zero lost-time incidents during decommissioning operations

[image of completed oil processing unit with Harvel-managed commissioning systems]

Let’s Commission with Confidence

Whether you're preparing to launch a new unit or retire an old one, Harvel is ready to lead. Our Commissioning & Decommissioning team works hand-in-hand with your operations, HSE, and vendor teams to ensure safe, compliant, and high-performing transitions.

Let’s schedule a commissioning readiness review and align on your startup goals.

Commissioning & Decommissioning