No Hot Work | Cold Applied | In-Place Repair
Power Generation Repair and Protection
Cold-applied repair solutions for hydroelectric dams, thermal plants, and power infrastructure. Minimize outage duration and extend equipment life without welding.
The Challenge
Power generation equipment operates under extreme conditions — high-velocity water flow, cavitation, sediment erosion, chemical exposure, and constant mechanical stress. Turbine runners erode. Draft tubes spall. Condensers corrode. Each hour of unplanned downtime costs thousands in lost generation capacity.
The Pacific Northwest relies heavily on hydroelectric power, where dam infrastructure faces unique challenges from sediment-laden rivers, cavitation damage on Francis and Kaplan turbines, and concrete erosion in draft tubes and spillways. Traditional weld overlay repairs require extended outages, hot work permits, and specialized crews.
Whether you operate a hydroelectric dam, natural gas combined cycle plant, or backup generators at a critical facility, every hour of outage impacts the grid and your bottom line.
The Belzona Solution
Belzona repair composites and protective coatings are engineered for power generation environments. These cold-applied materials eliminate hot work permits, reduce outage duration, and provide long-term protection against cavitation, erosion, and corrosion.
For hydroelectric facilities, Belzona offers specialized elastomers for cavitation protection on turbine runners, ceramic composites for erosion resistance, and epoxy systems for concrete restoration. For thermal plants, we provide condenser protection, pump repair, and cooling system coatings.
Belzona Technology Northwest provides product selection and technical support for power generation facilities throughout Washington, Oregon, Alaska, and Northern Idaho. We understand the unique demands of Pacific Northwest power infrastructure.
Facility Types We Serve
Belzona products are trusted across the power generation industry — including but not limited to:
Hydroelectric Dams
Francis turbines, Kaplan turbines, draft tubes, spillways, penstocks, wicket gates
Run-of-River Hydro
Turbine runners, intake structures, fish screens, trash racks, diversion works
Natural Gas / Combined Cycle
HRSGs, condensers, cooling towers, circulating water pumps, feedwater heaters
Biomass and Waste-to-Energy
Boilers, scrubbers, ash handling, fuel feed systems, stack linings
Cogeneration / CHP
Heat exchangers, steam turbines, process piping, cooling systems
Backup and Emergency Power
Generator sets, fuel tanks, cooling systems, exhaust systems, containment
Have a different facility type? Call us at (425) 610-4902 — we have solutions for virtually any power generation environment.
Problems We Solve
Common failure modes that cost you generation capacity and extend outages — and more:
Turbine Cavitation Damage
Cavitation erodes turbine runners and blades, reducing efficiency. Elastomeric coatings absorb cavitation energy and extend service intervals.
Sediment Erosion
Sediment-laden river water erodes turbine components and concrete structures. Ceramic composites provide superior erosion resistance.
Draft Tube Concrete Spalling
High-velocity water flow erodes and spalls draft tube concrete. Epoxy-based compounds rebuild profiles with superior abrasion resistance.
Condenser Tube Corrosion
Pitting and galvanic corrosion degrade condenser tubes and tube sheets. Protective coatings extend condenser life significantly.
Cooling Tower Deterioration
Chemical treatment and wet/dry cycling degrade cooling tower components. Chemical-resistant coatings provide long-term protection.
Pump and Valve Wear
Circulating water pumps and valves erode from sediment and cavitation. Rebuild worn components to OEM specifications in place.
Why Utilities Choose Belzona Over Weld Overlay
For turbine repair and component rebuilding, Belzona composites and elastomers offer significant advantages over traditional weld overlay.
| Consideration | Weld Overlay | Belzona Repair |
|---|---|---|
| Hot Work Permit | Required | Not required |
| Fire Watch | Required | Not required |
| Certified Welder | Required | Crew-applied with training |
| Heat Distortion Risk | Yes | None — cold applied |
| Hydrogen Cracking Risk | Yes (some alloys) | None |
| Cavitation Resistance (ASTM G32) | Depends on overlay | 0.07 mm³/hr loss (2141) |
| Pull-Off Adhesion (ASTM D4541) | Fusion bond | 6,330 psi (1321) |
| Salt Spray Protection (ASTM B117) | Depends on alloy | 5,000 hours |
| Outage Impact | Often extends 3-7 days | Fits scheduled window |
Test data from Belzona product specification sheets. Cavitation data from Belzona 2141 (FN10051). Adhesion and corrosion data from Belzona 1321 (FN10026).
Hot Work Permits
0
required for Belzona repairs
Cavitation Resistance
0.07 mm³/hr
volume loss (ASTM G32)
Outage Impact
Fits
scheduled maintenance window
Products for Power Generation
Repair composites, protective coatings, and elastomers for turbines, condensers, cooling systems, pumps, and concrete infrastructure.
Belzona 2141 (ACR-Fluid Elastomer)
Elastomeric coating for cavitation protection on turbine runners, propellers, and pumps. Absorbs cavitation energy. Specifically designed for hydroelectric applications.
Belzona 1321 (Ceramic S-Metal)
Ceramic-reinforced coating for erosion-corrosion protection. 6,330 psi adhesion. Ideal for pumps, heat exchangers, valves, and turbine components.
Belzona 1311 (Ceramic R-Metal)
Rebuild turbine runners, pump casings, and valve bodies. Ceramic-reinforced composite with excellent erosion resistance. Temperature resistant to 250°F.
Belzona 1341 (Supermetalglide)
Ultra-smooth erosion-resistant coating for turbine components. Surface 15x smoother than polished stainless. Improves efficiency and reduces cavitation.
Belzona 4111 (Magma-Quartz)
Concrete repair for draft tubes, spillways, and dam structures. Epoxy-based compound with excellent abrasion resistance for high-flow water environments.
Belzona 5811 (Immersion Grade)
Two-coat epoxy system for cooling water systems, tanks, and immersed structures. ABS approved. Excellent chemical and abrasion resistance.
Belzona 4131 (Magma-Screed)
Heavy-duty concrete resurfacing for floors, containment areas, and high-traffic zones. Self-leveling formula for smooth, durable surfaces.
Belzona 1111 (Super Metal)
Multi-purpose metal repair composite for general equipment rebuilding, machinery bases, and emergency repairs. Machinable after cure. ABS approved.
Need help selecting the right product? Call (425) 610-4902
Case Study
Draft Tube Concrete Repair — Hydroelectric Dam
A hydroelectric facility discovered significant erosion damage on the concrete draft tube and turbine housing during a scheduled outage. Years of high-velocity water flow and cavitation had eroded the concrete profile, reducing turbine efficiency and risking structural integrity.
The maintenance team used Belzona 4111 (Magma-Quartz) to rebuild the eroded concrete profiles. This epoxy-based compound was selected for its excellent resistance to water erosion and cavitation. The repair was completed during the scheduled outage window without requiring specialized concrete contractors or extended downtime.
- +Repair completed within scheduled outage window
- +Superior erosion resistance vs. traditional concrete
- +No specialized contractors required
- +Extended service life of critical infrastructure
Project Details
- Facility TypeHydroelectric Dam
- ApplicationDraft tube and turbine housing repair
- Products UsedBelzona 4111 (Magma-Quartz)
- Outage ImpactCompleted within scheduled window
- LocationWashington State
Frequently Asked Questions
Can Belzona handle sediment-laden river water?
Yes. Belzona ceramic composites like 1321 and 1311 are specifically designed for erosion-corrosion resistance. They perform exceptionally well in sediment-laden water environments common in Pacific Northwest rivers.
How does Belzona compare to weld overlay for turbine repair?
Belzona eliminates the need for hot work permits, fire watches, and certified welders. There's no risk of heat distortion or hydrogen cracking. Repairs typically fit within scheduled outage windows rather than extending them by 3-7 days.
What's the cure time during a scheduled outage?
Cure times vary by product and temperature. Most repairs can be returned to service within 24-48 hours at typical ambient temperatures. We can help plan repairs to fit your specific outage window.
Can Belzona be applied underwater?
Specific Belzona products are designed to cure underwater or on wet surfaces for emergency repairs. Contact us to discuss underwater application requirements for your situation.
Do you support remote hydro facilities?
Yes. We support power generation facilities throughout Washington, Oregon, Alaska, and Northern Idaho, including remote locations. We can coordinate product delivery and technical support to fit your maintenance schedule.
Power Generation Applications
Hydroelectric
- +Turbine runner rebuilding
- +Draft tube repair
- +Spillway protection
- +Wicket gate repair
- +Penstock lining
Thermal / Gas
- +Condenser tube protection
- +Cooling tower repair
- +Heat exchanger rebuilding
- +Circulating water pumps
- +Stack and duct lining
Infrastructure
- +Secondary containment
- +Tank lining and repair
- +Pipe repair and protection
- +Floor resurfacing
- +Equipment mounting
Need Power Generation Repair Products?
Describe your maintenance challenge and we will recommend the right Belzona products for your facility. Technical support for power generation facilities throughout Washington, Oregon, Alaska, and Northern Idaho.
Belzona Technology Northwest is the exclusive authorized Belzona distributor for Washington, Oregon, Alaska, and Northern Idaho. Product sales, technical support, and application training for power generation facilities throughout the Pacific Northwest.