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Special rules

'Lower-tier' storage of ammonia or chlorine may be covered by Danish Seveso rules

Ammonia and chlorine gases are poisonous when inhaled.

In 2006, Denmark implemented a national safety regulation for this type of storage when it is situated close to residential areas or institutions.

Storage of more than 5 tonnes ammonia or chlorine within a distance of 200 metres from residential areas or institutions is covered by the rules for column 2 (lower-tier) in the Danish Order on risk.

Risk-sensitive areas are defined in this special rule as residential areas of more than 150 people. This category also includes hotels, youth hostels, allotment garden areas, campsites and pleasure craft marinas for overnight use.

In this context, institutions are typically public sector activities such as hospitals, care homes and homes for people with mental disorders with at least 10 people who require special help to move around, as well as nursery schools, kindergartens and schools.

Temporary storage of hazardous substances during transport may be covered by Danish Seveso rules

Hazardous substances in transit are regulated by special legislation depending on whether they are being transported by road, rail, sea or air.

In 2006, Denmark implemented a regulation for temporary stores. This regulation covers the temporary storage of hazardous substances, e.g. in buildings, harbour areas and rail freight areas or marshalling yards. The areas in which the transhipment of liquid and gaseous hazardous substances takes place between ships, rail tankers and road tankers are also covered by the risk regulations.

These storage and reloading activities involving hazardous substances may be classified in either lower or upper-tier. To help establishments find out if they are covered by the rules a tool has been made available. By using only information on UN ADR codes it can predict if the storage is of a nature that represents the same hazards as a permanent storage of hazardous substances above the thresholds in Seveso. For English users the Quick Guide found at the site can be used together with this bilingual illustration of the texts.