Maintenance Cost (M)

Consequence Description

Probability of Failure

5

(occurs ≥ 5 times in a maintenance cycle)

4

(occurs 4 times in a maintenance cycle)

3

(occurs 3 times in a maintenance cycle)

2

(occurs 2 times in a maintenance cycle)

1

(occurs 0 - 1 time in a maintenance cycle)

Catastrophic (5)

Equipment replacement

25

20

15

10

5

Severe (4)

Complete Overhaul (>$10k)

20

16

12

8

4

Major (3)

Major maintenance cost or repairs ($5k to $10)

15

12

9

6

3

Moderate (2)

Moderate maintenance cost or repairs ($1k to $5K)

10

8

6

4

2

Minor (1)

Minimal maintenance cost or quick fix (<$1k)

5

4

3

2

1