Free Engineering Tool
Risk Assessment Matrix
Interactive 5×5 example risk matrix aligned with ISO 45001 / ISO 31000 risk management principles — the standards themselves do not prescribe a specific matrix. Select severity and likelihood to calculate risk score, view color-coded risk levels and recommended actions.
Results
Interactive 5×5 Risk Matrix — click any cell to select
Risk Score Formula
Severity Scale
| Rating | Level | Description |
|---|---|---|
| 1 | Negligible | No injury, negligible financial loss (<€1k) |
| 2 | Minor | First aid injury, minor financial loss (€1–10k) |
| 3 | Moderate | Medical treatment, moderate loss (€10–100k) |
| 4 | Major | Serious injury/disability, major loss (€100k–1M) |
| 5 | Catastrophic | Fatality/multiple fatalities, catastrophic loss (>€1M) |
Likelihood Scale
| Rating | Level | Frequency |
|---|---|---|
| 1 | Rare | May occur in exceptional circumstances (<1 per 10 years) |
| 2 | Unlikely | Could occur but not expected (1 per 5-10 years) |
| 3 | Possible | Might occur at some time (1 per 1-5 years) |
| 4 | Likely | Will probably occur (1+ per year) |
| 5 | Almost Certain | Expected to occur in most circumstances (multiple per year) |
Risk Level Thresholds
| Score | Level | Action |
|---|---|---|
| 1–3 | Low | Acceptable. Monitor and review periodically. |
| 4–6 | Medium | Tolerable with controls. Review and improve when practical. |
| 8–12 | High | Significant risk. Mitigation plan required. Management attention. |
| 15–25 | Critical | Intolerable. Immediate action. Stop work if necessary. |
Note: ISO 45001 and ISO 31000 do not prescribe this specific 5×5 matrix, score thresholds, financial bands or frequency definitions — the scales above are a widely used industry example. Each organization must define its own risk criteria, consequence and likelihood scales, and tolerability thresholds appropriate to its context.
Reduce equipment risk with proactive condition monitoring and precision balancing.
Nikolai Shelkovenko
Nikolai Shelkovenko is a vibration analysis engineer and the founder and CEO of Vibromera. For more than 15 years he has balanced rotating equipment in the field rather than on a test bench: mulchers, industrial fans, crushers, centrifuges, shafts and spindles. That work is what the Balanset instruments grew out of — they were designed as a tool a specialist can carry to the machine and use alone, on site, not as laboratory equipment. Vibromera was founded in 2017 and has been based in Porto, Portugal, since 2023. Development, assembly and support of the Balanset line all happen here. The flagship instrument is the Balanset-1A, a portable analyser for single- and two-plane balancing and for vibration diagnostics. Nikolai is personally involved in customer support, in working through difficult balancing cases and in the development of the software. He works with customers worldwide, in any language.
