Risk level

Meaning

Level 1 (especially serious risk)

Unacceptable risks, must be removed by possible measures.

Level 2 (more serious risk)

Risk should not be accepted and measures must be taken to reduce the risk unless the cost.

Level 3 (serious risk)

Risks should not be accepted and measures should be taken to reduce risks unless the risk reduction is exceeded beyond the benefits of risk reduction.

Level 4 (general risk)

Acceptable risks, further reduce risk when conditions permit