Oil & Gas Pre-Commissioning Services

Systematic pre-commissioning support to verify mechanical completion, ensure system integrity, and prepare oil and gas facilities.

Pre-commissioning

Where Construction Ends and Operational Risk Begins

Pre-commissioning is the critical transition phase between construction and commissioning. Errors at this stage result in delayed startups, equipment damage, safety incidents, and long-term reliability issues.

Velcorix provides specialized oil & gas pre-commissioning services to ensure systems are mechanically complete, clean, tested, and ready for commissioning, in full compliance with project specifications and regulatory requirements.

Our role is to verify readiness, eliminate latent defects, and de-risk startup before hydrocarbons are introduced.

Our Pre-Commissioning Scope

Air Blowing & Drying

Removal of debris and moisture to specified dew points.

Leak Testing (N2/He)

High-sensitivity testing using Nitrogen and Helium mixtures.

Chemical Cleaning/Flushing

Degreasing and pickling to achieve desired surface passivity.

Pressure Testing & Integrity Assurance

Hydrostatic and pneumatic pressure testing to ensure system integrity.

Typical Pre-Commissioning Engagements

Pipelines

Dewatering and drying of cross-country pipelines.

Process Plants

Steam blowing of critical steam lines in refineries.

Storage Tanks

Hydrostatic testing and calibration.

Offshore

Tightness testing of topside process arrangements.

Why Clients Choose Velcorix

We deploy specialized, high-performance equipment and skilled technicians to execute pre-commissioning tasks efficiently.

  • Specialized Equipment: Fleet of high-volume oil-free compressors, booster pumps, and cryogenic vaporizers.
  • Leak Detection: Usage of mass spectrometer leak detectors for pinpoint accuracy in N2/He testing.
  • Data Logging: Real-time digital recording of pressure and temperature for verifiable compliance reports.
Pre-comm Capabilities

Compliance & Support

Validation

Detailed test packs and punch list management.

Environmental

Safe disposal of test mediums and flushing chemicals.

Safety

Strict exclusion zones and high-pressure safety protocols.

Availability

Rapid mobilization to meet critical path schedules.

Ensure System Integrity

Trust Velcorix for your critical pre-commissioning requirements.

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