Risk Assessment of Oxygen Lance Burning Loss Using Bow-Tie Analysis Based on Fuzzy Theory

Table 2

Failure possibilities, failure likelihood values, and corresponding triangular fuzzy numbers [47]].

Failure possibilities	Failure likelihood values	Triangular fuzzy numbers
Very low	<1.0E − 08	μVL (x) = (0.00, 0.04, 0.08)
Low	1.0E − 08∼1.0E − 07	μL (x) = (0.07, 0.13, 0.19)
Reasonably low	1.0E − 07∼1.0E − 06	μRL (x) = (0.17, 0.27, 0.37)
Moderate	1.0E − 06∼1.0E − 05	μM (x) = (0.35, 0.50, 0.65)
Reasonably high	1.0E − 05∼1.0E − 04	μRH (x) = (0.63, 0.73, 0.83)
High	1.0E − 04∼1.0E − 03	μH (x) = (0.81, 0.87, 0.93)
Very high	>1.0E − 03	μVH (x) = (0.92, 0.96, 1.00)