Levels

Coefficients

Definitions

Minor consequences

1

- No personal injury;

- Discomfort at work;

- Destruction of property that does not jeopardize the integrity of the system.

Significant consequences

2

- Slight injury or limited intoxication of individuals by a low-toxic product;

- Contamination of the order of the permissible annual dose;

- Destruction of equipment resulting in system shutdown;

- Exposure to high level nuisances (noise, vibration, etc.).

Critical or serious consequences

3

- One or more individuals injured or intoxication limited by a toxic product;

- Contamination by a dose resulting in medical treatment;

- Pollution of the environment by a weakly toxic product or a small quantity of a toxic product;

- Irreversible loss of important information.

Internal catastrophic consequences

4

- Several people were seriously injured or dead;

- Environmental pollution by significant or repeated emission of a very toxic product;

- Complete destruction of the system.

External catastrophic consequences

5

Same as above except that the environmental impacts of the system are very significant.