Galvanic corrosion protection

Protecting Substation Infrastructure: The Corrosion Challenge

High-voltage substations rely on metal structures like HV gantries, retention tanks, fire-extinguishing covers, fire-suffocating gratings, electrical towers, pylons, and transformer radiators. To protect these critical components, they are often coated with hot-dip galvanizing—a process where steel is submerged in molten zinc to form a protective cathodic layer.

While this technology has been the gold standard for decades, it comes with limitations. In “standard” environments (urban, industrial, or low-salinity maritime settings classified as C3 or C4 per ISO 1461:2022 and ISO 9223), hot-dip galvanizing can protect structures for decades. However, in more aggressive environments (C5, C5H, CX, or C5HV), characterized by high salinity or industrial pollution, this protection rapidly degrades. The lifespan of the coating can shrink from decades to just a few years, leaving vital infrastructure vulnerable to corrosion and failure.

Northbrit’s Solution: GALVAGRID® Rust-Anode Primer

At Northbrit, we understand that corrosion isn’t just a maintenance issue—it’s a risk to operational reliability, safety, and long-term investment. That’s why we offer GALVAGRID® Rust-Anode Primer, a revolutionary technology that not only solves the limitations of traditional galvanizing but also extends the lifespan of both new and aging infrastructure.

  1. For New Installations: GALVAGRID® enhances the protective zinc layer, offering a thicker and more durable coating than traditional hot-dip galvanizing. This ensures decades of reliable corrosion protection, even in the most challenging environments.
  2. For Aging Infrastructure: GALVAGRID® provides an in-situ solution to restore corroded metal structures without replacement. This innovative “room-temperature galvanizing” process can be applied directly on-site, giving structures a second life for 20 to 40 years.

Why Choose GALVAGRID®?

  • Extended Durability: Offers superior protection against rust and corrosion, even in harsh C5-class environments.
  • Cost-Effective Maintenance: Eliminates the need for costly replacement of metal structures by restoring them in place.
  • Eco-Friendly Process: Minimizes waste and resource use by preserving existing infrastructure.
  • Flexible Application: Can be implemented during factory production or directly in the field.

Trust Northbrit: Your Reliable Partner in the US

With over 50 years of expertise derived from NATO’s original development of this technology, Northbrit is a name you can trust. As a dedicated partner to the American market, we bring unmatched experience, advanced solutions, and a commitment to excellence in corrosion protection.

When you work with Northbrit, you’re not just investing in state-of-the-art technology—you’re gaining a partner focused on safeguarding your infrastructure for the future. Whether you’re installing new substations or maintaining existing ones, Northbrit and GALVAGRID® Rust-Anode Primer are your keys to reliable, long-lasting performance.

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