Week 7 (Fault tree analysis ) Flashcards
1
Q
What is Fault tree analysis?
A
It is a quantitative risk assessment focusing on barrier based.
2
Q
What is the PFD for a valve not functioning?
A
0.01
3
Q
What are the weaknesses of fault trees?
A
Easy to get the logic wrong which leads to errors.
Only as good as quantitative data input.
4
Q
What are advantages against disadvantages of fault trees?
A
Advantages:
Comprehensive
Can handle multiple causes
Disadvantages:
Time and costly
Only for sudden failures
Dependant on available data.
False sense of precision.
5
Q
What is the difference between a fault tree and an event tree?
A
Fault tree: the probability of a single event.
Event tree: Probability of each possible consequence.
