SPECIALISTS IN HIGH-COMPLEXITY INTERVENTIONS

COTESA provides specialised crews for one-off services, short-term projects and demands that call for technical knowledge, speed and the ability to mobilise.

Solutions are scaled to the asset, the complexity and the operational need of each client.

  • Live-line and de-energised interventions
  • Live-line insulator washing up to 525 kV
  • Electrical testing and technical diagnostics
  • Contingency plans and drills
  • Coordination and technical support after incidents
  • Structure conversion and route variant design
  • Technical due diligence
  • Live-line training and procedures
  • Incident analysis
  • Preparation of technical manuals and procedures
COTESA helicopter on a special service installing aerial marker balls

TECHNICAL EXPERTISE FOR HIGH-COMPLEXITY OPERATIONS

Demands outside the O&M routine that require specialised crews and tooling.

The need to reduce outages through appropriate techniques, where technically viable.

Correction of faults, hot spots, OPGW issues, earthing and components of lines and substations.

Emergency response, post-incident recovery and contingency plans.

FROM PREVENTIVE TO EMERGENCY

PREVENTIVE MAINTENANCE

  • Routine and detailed inspections, including tower climbing
  • Aerial inspections with professional drones
  • Ultraviolet and thermographic inspections
  • Electrical testing and earthing measurements
  • Optical fibre testing (OTDR / attenuation)
  • Verification of verticality, structures and safety clearances

COMMISSIONING

  • Detailed post-construction inspections
  • Checking of structural elements and conductors
  • Earthing measurements
  • Verification of verticality and guy wires
  • Punch list and commissioning reports

CORRECTIVE MAINTENANCE

  • Replacement of insulator strings, spacers, dampers and fittings, live-line or de-energised
  • Split shunt splices and OPGW work (fusion and recovery)
  • Correction of earthing and counterpoise
  • Erection of emergency towers
  • Installation of aerial marker balls
  • Correction of hot spots on live lines

SPECIAL SERVICES IN OPERATION

Live-line work, working at height, aerial support and safety training with COTESA’s own crews.

FREQUENTLY ASKED QUESTIONS ON SPECIAL SERVICES

Specialised crews for one-off services, short-term projects and emergency demands that require technical knowledge, speed and the ability to mobilise, scaled to the asset, the complexity and the operational need of each client.
Live-line insulator washing up to 525 kV, insulator replacement live-line or de-energised, correction of hot spots, and the preparation of live-line training and procedures.
Yes, with coordination and technical support after incidents, erection of emergency towers, contingency plans and drills, and incident analysis.

BRING YOUR NEED TO OUR TEAM AND GET
A SOLUTION SCALED TO YOUR ASSET

Fast mobilisation, certified crews and pioneering live-line experience.