Applied Computational Intelligence and Soft Computing / 2017 / Article / Tab 3

Research Article

Failure Effects Evaluation for ATC Automation System

Table 3

Scoring method of occurrence degree.

ScoreThe possibility of failureReference value of failure probability

1RareLow possibility of failure mode1/106

2LowPossibility of failure mode is relatively low1/20000
1/4000
3

4MiddleMiddle possibility of failure mode1/1000
51/400
61/80

7HighHigh possibility of failure mode1/40
81/20

9Extremely
high
Extremely high possibility of failure mode1/2
1/8
10

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