Exercice1:
Consider the following probabilities for electrical and fuel issues causing cars starting problems during
winter:
Problems coming from: \"no Gas in tank\" = 10%, \"no spare gas can\" = 3%, \"dead battery\" = 20%,
\"Alternator\" = 13% and \"starter\" = 9%
=0.1 \times 0.03
0.003
Fuel issue
Winter car
starting problem
0.42 + 0.003 = 42.5%
Electrical
issue
= 0.2 + 0.13 + 0.09 = 42%
No Gas
in tank
No spare
Gas can
Dead
Battery
Alternator
Starter issue
issue
0.1
0.03
0.2
0.13
0.04
1. Give the probability of the main problem
2. Discuss the optimized control to prevent the failure presented in the fault tree diagram.