7
MAJOR ACCIDENT
Major environmental impact. Extensive protective measures.
Never reached in Niger
6
SERIOUS ACCIDENT
Significant release. Full protective measures required.
Never reached in Niger
5
ACCIDENT
Limited release. Partial protective measures.
Never reached in Niger
4
LOCAL ACCIDENT
High exposure of a worker. Low external release.
Never reached in Niger
3
SERIOUS INCIDENT
Severe contamination. Overexposure. Near-accident.
Never reached in Niger
2
INCIDENT
Exposure exceeding limits. Significant failure.
Never reached in Niger
1
ANOMALY
Operational deviation. No significant impact.
Never reached in Niger
0
BELOW SCALE
No safety significance.
Current Niger level