Designing Around an Operating Plant: Inside the Narangba Galvanising Upgrade

Upgrading an existing plant means working with a site that already has its own layout, constraints and production needs. Each new part has to fit into that bigger picture.

The Narangba galvanising upgrade brought together Kingfield Technologies and Equipment and Invent Design to overhaul an ageing facility. The project included a full dipping room upgrade, specialised trolleys and a substantial structure supporting the lifting equipment.

The practical challenge was making the room, handling equipment and supporting steelwork function as one system.

Inventor 3D Model of New Steel and Equipment

A room designed around the process

A key part of the upgrade was a large, custom-designed room enclosing the tanks.

Its purpose went beyond providing a physical enclosure. The room was designed to contain hazardous fumes, manage ventilation and help regulate temperature and humidity to support product quality and limit environmental impact.

That creates several demands on the layout. Steel components need to move through the process, while the room still has to perform its containment function.

For a project like this, the design review needs to follow the work through the room. Looking at each component separately won’t tell you whether the overall arrangement works.

Flexibility in how steel moves

Galvanising plants handle steel components of different shapes and sizes. The handling arrangement needs to accommodate that variety.

Invent Design incorporated specialised entry and exit trolleys into the system. These also allow for double dipping when required, giving the plant flexibility in how components are processed.

It’s a useful reminder that equipment movement deserves attention early in a design. Where a trolley travels, where it stops and how it works with the lifting equipment can all influence the surrounding layout.

The structure behind the lifting

Kingfield partnered with the crane supplier to install two large hoists running on bespoke monorails. An expansive truss and framing system supports that arrangement. Invent Design engineered the structure to meet tight tolerances across a broad span.

Those requirements make coordination particularly important.

The supporting steelwork and the equipment it carries need to agree on positions and dimensions before fabrication begins.

The Narangba project illustrates a practical lesson for plant upgrades: review the whole operating arrangement, alongside the individual parts. Following the path of a steel component through the process helps bring the room, trolleys, hoists and structure into the same conversation.