Select Page

CASE STUDY

DENSO OFFERS PROVEN, SUPERIOR PROTECTION TO HV GANTRIES IN NAMIBIA

Exposed Surface Coatings

Project Data

LocationWalvis Bay, Namibia
ProductsDenso™ Paste, Denso™ Superlight Profiling Mastic, Denso Petrolatum Tape™
DateInstalled in 2017

PROJECT DETAILS

Walvis Bay, on Namibia’s coast, has one of the most corrosive environments in the world. The area is rated C5M – the highest level of corrosion risk – due to salty sea air, strong winds, and blowing desert sand. These harsh conditions cause metal parts to rust and wear out quickly.

A major electricity company had problems with corrosion on its high-voltage gantry equipment, including post insulators, long rods, and shackles. These parts were already galvanized, but it wasn’t enough to protect them long-term in this tough environment.

To solve this, the company used a simple, easy-to-apply protective coating, Denso™ Paste, Denso™ Superlight Profiling Mastic, and Denso Petrolatum Tape™, over the galvanized metal. This added a second layer of defence against rust, helping the parts last much longer.

An electrical contractor was tasked with replacing several sections of the high-voltage (HV) gantries due to severe corrosion on components that had not been protected with wrapping. The corrosion had progressed to the point where some of the steel parts were no longer structurally sound and had to be removed and replaced.

As part of this work, a number of Denso-wrapped sections were also removed, since they were connected to the corroded areas. Once the Denso wrapping was carefully taken off, the team inspected the components underneath and found them to be in excellent condition – with no signs of corrosion or damage. These parts had been fully protected, even after long-term exposure to Walvis Bay’s harsh C5M-rated coastal environment.

This outcome provided clear, real-world proof of the effectiveness and durability of the Denso corrosion protection system. It demonstrated that, when applied correctly, our products can extend the service life of critical infrastructure and perform reliably even in the most aggressive environments.