Sa
| 1 | 2 | 3 | 4 | 5 |
---|
Ob Ă— Dc
|
---|
5 | 5 | 10 | 15 | 20 | 25 |
10 | 10 | 20 | 30 | 40 | 50 |
15 | 15 | 30 | 45 | 60 | 75 |
20 | 20 | 40 | 60 | 80 | 100 |
25 | 25 | 50 | 75 | 100 | 125 |
- The RPN or Risk matrix is calculated by multiplying the severitya (S), occurrenceb (O), and detectabilityc (D) of the hazard. For example, a hazard that has “major severity” (rate 5), that occurs “often” (rate 4), and that has a “low probability of detection” (rate 4) has an RPN of 5 × 4 × 4 = 80
- Score more than 80 = emergency for intervention (eliminated)
- Score 40–75 = urgent for intervention (programing & controlled)
- Score 20–30 = need to program (programing & controlled)
- Score less than 20= need to monitor (accepted)