As visitors drive into Cape Town on the N1 freeway they pass the Cape Town docks and its new rows of yellow and grey structures for the refrigeration container terminal at Portnet. These structures house refrigerated containers which are stacked 3 high and are connected to the electricity supply at the site. Each unit weighs 10 tonnes and stores 9 refrigerated containers.
The units are directly adjacent to the harbour and in some areas are as close as 20 metres to the sea. The corrosion specification for the structural steel called for hot dip galvanizing followed by a two-coat paint system. This corrosion protection system will have an indefinite lifetime if correctly maintained and if the final paint coat is replaced at reasonable intervals.