Typically Simpro bin tipping machines have a Safety Integrity Level of 1.
| Probability of Occurrence of harm | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Fr - Frequency, duration | Pr - Probability of hazardous event | Av - Avoidance | |||||||
| < 1 hour | 5 | Very high | 5 | Impossible | 5 | ||||
| > 1 hour < 1 day | 5 | Likely | 4 | Possible | 3 | ||||
| > 1 day < 2 weeks | 4 | Possible | 3 | Likely | 1 | ||||
| > 2 weeks < 1 year | 3 | Rarely | 2 | ||||||
| > 1 year | 1 | Negligible | 1 | ||||||
| Total: 5 + 2 + 1 = 8 | |||||||||
| Severity of Harm | SIL Class | ||||||||
| Se – Consequences (severity) | 3 - 4 | 5 - 7 | 8 – 10 | 11 – 13 | 14 - 15 | ||||
| Death, losing an eye or arm | 4 | SIL2 | SIL2 | SIL2 | SIL3 | SIL3 | |||
| Permanent, losing fingers | 3 | SIL1 | SIL2 | SIL3 | |||||
| Reversible, medical attention | 2 | SIL1 | SIL2 | ||||||
| Reversible, first aid | 1 | Other measures | SIL1 | ||||||