POWER
Substation Repair & Coating Solutions
Composite repair and protection solutions for substations
Rezitech provides engineered repair, protection and maintenance solutions for substations and electrical infrastructure across Australia.
Our solutions help address common issues such as transformer oil leaks, SF₆ gas leaks, corrosion, damaged equipment and deteriorating structures. Using cold-applied repair composites, protective coatings and reinforcement systems, we help extend asset life, minimise downtime and reduce the need for costly replacement.
POWER
SF₆ (Sulfur Hexafluoride) Leak Repairs
Effective in-situ sealing solutions for SF₆ leaks in gas-insulated switchgear, circuit breakers and transformers.
Belzona provides effective in-situ sealing solutions for SF₆ leaks in gas-insulated switchgear, circuit breakers and transformers, helping maintain performance, safety, and environmental compliance while minimising downtime and enabling a quick return to service.
Rezitech provides repair solutions for SF₆-insulated switchgear, transformers, bushings, flange connections and associated electrical equipment where leakage is occurring around bolted joints, seals or deteriorated interfaces. Belzona cold-applied systems can be used to encapsulate and seal leaking areas externally, helping avoid welding, hot work or major component replacement.
These systems can be particularly useful where equipment access is limited or where shutdown time needs to be minimised.
Rezitech can assist with assessing the leak location, selecting a suitable repair system and carrying out the application to provide a durable external seal and help reduce ongoing SF₆ loss.
Click here to learn how to repair an SF₆ leak with Belzona SF6-FIX 
POWER
Transformer Oil Leak Repairs
Fast, effective sealing of transformer oil leaks on tanks, flanges, and radiators, restoring integrity and extending asset life without the need for hot work.
Belzona’s surface tolerant and oil resistant repair materials provide fast, effective sealing of transformer oil leaks on tanks, flanges, and radiators, restoring integrity and extending asset life without the need for hot work.
Click here to view our transformer oil leak repair solutions
BELZONA REPAIRS OIL LEAKS ON WIND FARM TRANSFORMER
Repair of transformer leaking oil through the main flange and flange bolt holes
REPAIR OF TRANSFORMER TURRET OIL LEAK
Misalignment into steel turret occurred causing the Oil in the transformer to seep out and create a live oil leakPOWER
Electrical & Critical Equipment
Repair and protection solutions for substation electrical equipment, fluid handling systems and auxiliary assets to improve reliability and extend service life.
Electrical Equipment
Substation electrical assets including switchgear, circuit breakers, busbars, enclosures, and cable systems are vulnerable to corrosion, moisture ingress, and wear, impacting performance and safety.
Belzona solutions provide fast, effective repair and long-term protection. Components can be rebuilt, sealed, and protected using cold-applied materials with excellent dielectric strength, restoring insulation, maintaining conductivity, and preventing environmental ingress. Coatings and sealing systems protect against corrosion, chemicals, UV exposure, and electrical tracking, while ensuring cable entries and enclosures remain secure and reliable.
Repair & protection of fluid handling equipment and Pipework
Erosion-corrosion in substation fluid systems such as transformer cooling circuits and auxiliary pipework can reduce efficiency and compromise reliability
Belzona’s repair composites, coatings, and wrap systems provide fast, effective in-situ solutions without the need for shutdown. Cold-curing materials restore damaged components, even on oil- or moisture-contaminated surfaces, while delivering excellent chemical and corrosion resistance. Reinforced and engineered wrap systems offer long-term protection for both low-pressure and pressurised pipework, eliminating the need for hot work and reducing downtime.
Auxiliary Systems
Auxiliary systems such as pumps, pipework, cooling systems, HVAC units, and battery rooms are critical to reliable substation operation and are often exposed to corrosion, chemicals, abrasion, and environmental wear.
Belzona repair composites and protective coatings restore and protect these assets, providing durable resistance to corrosion, erosion, and chemical attack while extending equipment life and reducing maintenance downtime.
POWER
Structural, Civil & General Maintenance
Repair and protection solutions for substation containment areas, concrete infrastructure and structural steel to prevent deterioration and extend asset life.
Protection for Bunds, Drainage Channels & Sumps
Substations require reliable containment systems to protect against transformer oils, chemicals, and contaminated runoff.
Areas such as bunds, drainage channels, and sumps are particularly vulnerable to leaks and environmental damage, making durable protective linings essential for long-term asset integrity and regulatory compliance. Belzona polymeric coatings can be applied by brush or airless spray to create seamless, impermeable linings that provide outstanding resistance to transformer oils, fuels, and other aggressive chemicals.
Concrete & Civil Infrastructure
Concrete structures such as plinths, bunds, and foundations can deteriorate due to chemical attack, weathering, and mechanical damage.
Belzona repair systems restore structural integrity, rebuild damaged areas, and provide protective coatings to prevent further degradation.
Structural Steel & Outdoor Assets
Outdoor steel structures in substations are constantly exposed to harsh environmental conditions, leading to corrosion and structural weakening.
Belzona coatings and repair composites offer long-term protection against corrosion, while also enabling the rebuilding of damaged steelwork. These solutions extend the lifespan of critical infrastructure and reduce the need for costly
replacements.
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Frequently asked questions
How can SF₆ gas leaks in substation switchgear be repaired?
SF₆ gas leaks in gas-insulated switchgear (GIS), circuit breakers, transformers and flange connections can often be repaired in situ using cold-applied composite sealing and reinforcement systems. Rezitech provides Belzona solutions that can seal leaking joints and flanges while helping minimise downtime and avoid hot work. The brochure includes examples of successful SF₆ leak repairs on both power station and substation equipment
Can transformer oil leaks be repaired without replacing the transformer?
Yes. Transformer oil leaks from tanks, flanges, inspection covers, bolts and radiators can often be sealed using surface-tolerant repair composites, reinforcement materials and protective coatings. Rezitech uses Belzona repair systems to restore the integrity of leaking areas and help extend transformer service life rather than replacing otherwise serviceable equipment.
What substation equipment can Rezitech repair and protect?
Rezitech provides repair and protection solutions for a wide range of substation electrical, mechanical and structural assets, including switchgear, circuit breakers, busbars, enclosures, cable systems, transformer cooling systems, pumps, pipework, HVAC equipment, structural steel, concrete foundations, plinths, bunds, drainage channels and sumps. Solutions can address problems including corrosion, erosion, chemical attack, moisture ingress and general deterioration.
How can corrosion and deterioration of substation structures be repaired?
Damaged steelwork, concrete foundations, plinths, bunds and other civil infrastructure can be rebuilt using polymeric repair materials and protected with corrosion- and chemical-resistant coatings. Rezitech provides Belzona composite repair and coating systems designed to restore deteriorated surfaces and provide longer-term protection against weathering, chemicals and harsh substation environments.
What solutions does Rezitech provide for substation bunds and oil containment areas?
Rezitech provides protective coating and lining systems for transformer bunds, drainage channels, sumps and other containment areas exposed to transformer oil, fuels, chemicals and contaminated runoff. Seamless polymeric coatings can be applied to create an impermeable protective barrier that helps prevent substrate deterioration and maintain the integrity of containment infrastructure.
