Natural emissions and fumigation can cause serious health effects.

A shipping container is very tight with practically zero ventilation. If hazardous volatile chemicals are “naturally” present in the goods or packing material, they are emitted during transport and accumulates in the container air.

Moreover, highly toxic so-called fumigants may have been deliberately added to kill insects. A warning for fumigation, although required, is often lacking. Entering a fumigated container is a life-threat.

We investigated several hundred shipping containers arriving in Sweden and detected nearly 50 different chemicals, many of them cancer-causing, in the container air. One out of eight containers had levels of one or more chemicals above, sometimes far above, the occupational exposure limit.

No warning properties

Hazardous chemical vapors are invisible to the eye and have no odor or other properties that indicate their presence. No low-cost, easy to use instrument can detect all types of chemicals. Use of expensive, advanced instruments is the only way.

Not sure if safe? Pre-ventilate!

If a container has not been clearly shown to be safe, with chemical levels below their 8-h occupational exposure limits, it should be pre-ventilated before people may open and enter.

The Evaqvent method is very efficient

Our method of pre-ventilation rapidly lowers the chemical levels in container air, in most cases by 80% or more in less than one hour. The pre-ventilation, combined with the natural ventilation during unstuffing with open doors, reduces the personal exposure more than 50-fold compared to arrival concentrations.

Pre-ventilate with closed doors, evacuate to the outside

Pre-ventilation with the Evaqvent method is done before the container doors are opened. This lowers the level of chemicals in all parts of the container and eliminates the high peak exposure otherwise seen when opening an container

The extracted air is evacuated to the outside, thereby avoiding contamination inside the warehouse.

Avoid reaccumulation

Reaccumulation is often rapid even if the container has been ventilated. This is due to on-going emissions. The pre-ventilation should therefore continue until the container is opened.

Not sure if safe? Pre-ventilate!

If a container has not been clearly shown to be safe, with chemical levels below their 8-h occupational exposure limits, it should be pre-ventilated before people may open and enter.

The Evaqvent method is very efficient

Our method of pre-ventilation rapidly lowers the chemical levels in container air, in most cases by 80% or more in less than one hour. The pre-ventilation, combined with the natural ventilation during unstuffing with open doors, reduces the personal exposure more than 50-fold compared to arrival concentrations.

Pre-ventilate with closed doors, evacuate to the outside

Pre-ventilation with the Evaqvent method is done before the container doors are opened. This lowers the level of chemicals in all parts of the container and eliminates the high peak exposure otherwise seen when opening an container.

The extracted air is evacuated to the outside, thereby avoiding contamination inside the warehouse.

Avoid reaccumulation

Reaccumulation is often rapid even if the container has been ventilated. This is due to on-going emissions. The pre-ventilation should therefore continue until the container is opened.

Evaqvent AB, Sweden

Pre-ventilation of shipping containers made easy