Any engineering operation that imports goods in shipping containers faces an unexpected risk – toxic gases inside the container. A study by NZ Customs showed that about 1 in 5 import containers could be at risk. The types of gases found include neurotoxins like Methyl Bromide from fumigations, but also carcinogens like Formaldehyde from wood products. Even machinery parts from overseas, can emit benzene and other cancer causing hydrocarbons, from oils and chemical coatings. In many cases, gases can accumulate to dangerous concentrations, without being able to be detected by human smell.

Fortunately there is a solution available – gas detection and ventilation equipment. This is widely used by Customs authorities in New Zealand, Australia, Canada and Europe, but so far the problem is not widely recognised by private industry. A hollow stainless steel probe can easily be inserted through the container door seal, before it is opened, and the gas levels checked with a monitor. If unsafe levels are found, the container can be ventilated fast and efficiently, using a patented system available from Nordiko Quarantine Systems Pty Ltd.