22/06/2026
The ammonia leak at a seafood export unit near Periyapalayam in Chennai, which led to fatalities and over 60 hospitalisations, is a serious reminder of the risks associated with cold-chain operations. Reports indicate that the leak is suspected to have originated from within the unit and then spread across the premises.
In cold storage and processing facilities, ammonia-based refrigeration systems are widely used to maintain low-temperature environments. However, when a leak starts inside the operational area and is not contained immediately, it can spread rapidly through enclosed work zones and impact workers across multiple areas.
In many such facilities, the critical gaps are often basic and preventable. These include delayed detection of ammonia leaks in processing and compressor areas, lack of continuous gas monitoring across key zones, limited real-time visibility of temperature, COโ, humidity, and equipment health trends, and slow escalation of alarms through SMS or WhatsApp alerts to trigger timely shutdown actions.
In enclosed cold-chain environments where worker density is high, even a short delay in detection and response can significantly increase exposure and the spread of gas.
This incident reinforces the importance of early detection, continuous monitoring, and automatic isolation as essential safety controls in cold-chain operations, rather than optional upgrades.
