By Eamonn Ryan
Building a cold store is not simply a matter of adding refrigeration to a warehouse. It is a specialised discipline where every design decision has consequences for operational efficiency, energy consumption, safety and long-term profitability.
© Cold Link Africa
That was one of the key messages delivered by Martin Bailey of Industrial Logistics Systems during a recent presentation in Cape Town, where he shared practical lessons drawn from decades of experience designing and advising on warehousing and logistics facilities across southern Africa and beyond.
According to Bailey, cold stores represent one of the most challenging infrastructure investments in the supply chain sector. While a conventional warehouse may cost between R15 000 and R20 000 per square metre to construct, cold storage facilities can easily reach double that figure. The operational costs are equally significant, with electricity consumption often running at several times that of an ambient warehouse.
The result is an environment where design mistakes can be extremely expensive. Poor planning does not simply reduce efficiency; it can lead to stock losses, safety incidents and escalating operating costs that persist throughout the life of the facility.
Bailey stressed that the complexity of modern cold storage extends far beyond refrigeration systems. Today’s facilities must accommodate changing customer requirements, increasingly diverse product profiles, stricter food safety standards, growing sustainability pressures and rapid technological developments. At the same time, operators must balance the need for flexibility against the desire to maximise storage density and throughput.
One of the first areas where this complexity becomes apparent is at the loading dock. Bailey described the dock area as the point where many cold store problems begin. It is typically the most congested section of the facility, bringing together vehicles, personnel, equipment and products while simultaneously serving as the boundary between controlled internal temperatures and external environmental conditions.
What appears to be a simple issue such as truck height can quickly become a major design consideration. While industry standards suggest relatively consistent vehicle dimensions, reality is often very different. In third-party logistics environments, operators may have little control over the types of vehicles arriving at their facilities, creating the need for dock systems capable of accommodating significant variation.
This requirement influences everything from dock leveller specifications to shelter design and door placement. Bailey noted that globally, best practice increasingly favours dock configurations that minimise temperature loss by sealing vehicles tightly against the building envelope. Although these solutions are widely adopted in many international markets, they remain less common in parts of South Africa than they perhaps should be.
The challenge is becoming even more complicated as transport fleets evolve. Electric vehicles, battery-powered refrigeration systems and solar-assisted transport technologies are introducing new infrastructure requirements at loading docks. What was once a relatively straightforward interface between warehouse and vehicle is rapidly becoming a sophisticated operational environment in its own right.
Yet the dock is only the beginning of the design journey. Once products enter the facility, operators face another critical question: how should they be stored?
As Bailey explained during his presentation, there is no universal answer. The optimal storage system depends entirely on factors such as throughput, stock profiles, picking requirements and future business flexibility.
In the next article, we examine the various storage systems available to modern cold stores and explore why the right solution for one operation may be completely wrong for another.