11. Glossary

Major accident

An event such as a major emission, fire or explosion resulting from uncontrolled development during operation, causing a serious immediate or delayed danger to human health or the environment, inside or outside the establishment, and involving one or more dangerous substances or preparations.

Defense barrier

A defense barrier consists of safety equipment or an operation performed by an operator to prevent the chain of events that could lead to a major accident.

Danger

Intrinsic property of a substance, a technical system, an arrangement, an organism, etc. likely to cause damage to a "vulnerable element".

IPS element

To qualify as important to safety (IPS), an item (operation or equipment) must be chosen...