The Weka Guard is a safety device designed to protect Weka copper-nickel box coolers from severe corrosion caused by welding currents during the newbuilding phase of a vessel. When the ship’s electrical supply is not yet available, stray welding currents can pass through the cooler and cause irreversible damage. The Weka Guard provides a controlled electrical connection between the cooler and the hull, preventing these harmful currents from affecting the box cooler.
It is required during ship construction and is essential for preserving the integrity and lifespan of Weka CuNi box coolers.
During newbuilding, welders use temporary electrical systems that can create uncontrolled current paths through metal structures. If the box cooler is not protected, these currents may travel through the CuNi cooler and cause rapid corrosion. The Weka Guard prevents this by providing a controlled, low-resistance connection between the cooler and the hull, ensuring welding currents bypass the cooler entirely.