Ensure the longevity, safety, and operational efficiency of your hydroelectric assets with our specialized commercial diving and subsea solutions.
At Drafinsub, we understand that hydroelectric plants, dams and reservoirs are critical infrastructure requiring precise, safe, and reliable maintenance. Downtime is costly, and structural integrity is non-negotiable. We provide elite underwater assistance services designed specifically for the challenging environments of high-head dams, spillways, and intake structures.
Our Core Professional Underwater Services for Hydropower Plants, Dams and Water Infrastructure
We combine advanced technology (ROVs, Multibeam, Sub-bottom Profiler) with highly skilled commercial dive teams to deliver comprehensive support for the hydroelectric sector.
Underwater Inspections & Surveys
Routine inspections are vital for preventing catastrophic failures. We provide detailed assessments of submerged structures.
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Diver and/or ROV Surveys: High-definition video inspectionsperformed by Divers or using Remotely Operated Vehicles (ROVs) for hazardous areas.
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NDT (Non-Destructive Testing): Ultrasonic thickness measurements, concrete hardness testing, and corrosion mapping.
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Scour & Erosion Analysis: Monitoring the riverbed and foundation stability to prevent undermining.
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Detailed Reporting: Comprehensive technical reports with video logs and 3D modeling capabilities.
Intake & Trash Rack Maintenance
Blockages reduce flow and power generation efficiency. We keep your intakes clear.
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Trash Rack Cleaning: Manual and mechanical removal of logs, debris, and sediment from intake screens.
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Gate & Valve Maintenance: Underwater inspection, repair, and seal replacement for sluice gates and penstock valves.
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Sediment Removal: Dredging and air-lifting services to clear silt build-up near vital machinery.
Structural Repairs & Rehabilitation
When damage is detected, our divers are equipped to fix it in wet conditions to minimize downtime and facility dewatering.
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Underwater Concreting & Grouting: Repairing cracks, spalling, and cavitation damage in spillways and aprons.
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Epoxy Injection: High-strength chemical sealing for structural cracks.
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Metal Fabrication & Welding: Wet welding and cutting for steel components, stop logs, and guides.
Why Choose Drafinsub for Dam Operations?
Working on hydroelectric dams presents unique risks, including high-pressure differentials, confined spaces, and zero-visibility environments.
Safety First Approach: We strictly adhere to IMCA and UNI safety standards. All operations follow rigorous risk assessments.
Minimizing Downtime: Our methods are designed to perform maintenance while the plant remains operational whenever possible.
High-Altitude Diving Expertise: We are trained and equipped for the specific decompression requirements way above the sea level.
Specialized Environments We Serve
Hydroelectric Power Plants
Water Reservoirs & Catchment Basins
Irrigation Dams
Tailrace & Spillway Channels
Surge Tanks & Tunnels (Confined Spaces)
Ready to Optimize Your Infrastructure?
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