Quality Tool
Environmental Aspect & Risk Matrix
List environmental aspects, score severity × frequency, and rank risks on a 5×5 matrix to prioritise controls.
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Risk assessment matrix
List each environmental aspect, rate severity (impact if it occurs) and frequency, and the matrix ranks them by risk = severity × frequency so you can prioritise controls.
| Environmental aspect | Severity | Frequency | Risk | |
|---|---|---|---|---|
| 12 | ||||
| 10 | ||||
| 5 |
High: 0Medium: 2Low: 1
Risk matrix (severity × likelihood)
| L1 | L2 | L3 | L4 | L5 | |
| S5 | 5 | 10·1 | 15 | 20 | 25 |
| S4 | 4 | 8 | 12·1 | 16 | 20 |
| S3 | 3 | 6 | 9 | 12 | 15 |
| S2 | 2 | 4 | 6 | 8 | 10 |
| S1 | 1 | 2 | 3 | 4 | 5·1 |
·n = number of items currently at that cell.