Our goal is to give our customers the opportunity to control their maintenance budget and time schedule of the preventive inspections without coordination worries. To this end, Gemco offers on-site turnkey maintenance services to avoid our customers managing complex operations and several contractors. We extend our activities to multi-technical skilled services and an expanded scope of work. Where many providers are focused on the rotating equipment alone, Gemco considers the extended environment of the energy production or compression equipment.

Our activities

  • Partial overhaul of the equipment
  • Major overhaul of the equipment & auxiliaries
  • Control and electrical systems maintenance
  • NDT (DPI, FPI, MPI et UT) COFREND certified
  • Balancing
  • Alignment
  • Commissioning and testing
  • Electrical Controls (generator and LV / HV distribution)
  • Instrumentation maintenance
  • Troubleshooting and diagnostics

Our means

  • Workshop container fully equipped for on-site machining
  • Mobile milling machines for blades and parts machining
  • Mobile balancing equipment
  • Laser alignment
  • Specific tools (more than 75 different types in store)
  • Mobile Control structure for NDT
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Maintenance sur site


Predictive maintenance consists of a series of practices which objective is to anticipate degradation conditions of the equipment. These practices must be the least intrusive possible, and aim the highest achievable accuracy. For this purpose, Gemco offers a wide range of methods performed by highly qualified technicians.

Non-destructive testing

Non-destructive testing (NDT) consists of a special series of controls allowing the analysis of the structure of the material without having to alter the tested part. GEMCO offers several technics:

  • Dye Penetrant inspection (white/ red) -DP
  • Fluorescent Penetrant inspection - FP
  • Magnetic Particle inspection - MP
  • Ultrasonic Testing - UT

To provide maximum accuracy in the analysis, our specialists are COFREND certified.

Vibration analysis

Mechanical vibrations are often the very first signs before wider damages in rotating equipment. Vibration analysis allows to characterize the vibration phenomenon, determine the source and implement the necessary preventive measures. For this purpose, GEMCO’s engineers are constantly trained to vibration analysis technics and to the new available analytical equipment.


Endoscopy, by the introduction of a small diameter video probe into the equipment to be inspected, allows a visual check of the internal condition of a rotating machine. This technology is primarily used to detect damages, major premature wear or cracking of internal parts.

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Predictive maintenance