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Health and safety

We protect the health and safety of people working on our sites and of local residents.

Health and sefety is one of our priorities. We attach the almost importance to safety training and continually step up the safety measures taken when transporting hazardous substances.

Our Engis site has a Seveso classification because of our stores of ammonia (NH3) and sulphur dioxide (S2). The ammonia is used as a raw material in the manufacturing of soluble fertilisers for domestic use, while sulphur dioxide is wanted because of its bleaching qualities (sugar production, paper industry).

As a Seveso company, we are subject to very strict safety requirements, and to this end we work closely with the relevant municipal, provincial and federal authorities.

Our in-house intervention teams are trained to handle any type of incident. Simulations are organised frequently, in collaboration with the relevant authorities and the emergency services, to ensure we are all prepared to respond efficiently to such a situation.

If a major incident were to occur, employees on the site and local residents would be immediately alerted by Seveso sirens, allowing them to take action and take shelter in a safe place. The first steps to take are as follows:


Take shelter in an enclosed space
Take shelter in an enclosed space
(house, car)
Close doors and windows and air vents and ventilation systems
Close doors and windows and air vents and ventilation systems
Turn on the television or the radio
Turn on the television or the radio, tuning into RTBF
Avoid making phone calls
Avoid making phone calls. Leave the lines free for the organisation of the emrgency effort
Leave your children at school
Leave your children at school. They are safe there, as teachers follow the same steps as described here


With a view to ensuring ongoing control and continuous improvement, Prayon tests its four Seveso sirens at around 1 p.m. on the first Thursday of every month (in addition to the civil protection tests, which take place between 12 noon and 1 p.m. on the first Thursday of the first month of each quarter).

If you want to find out more about the Seveso Directive and the measures it involves, please refer to the Belgian federal site

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