Exercises 10

Consider the fault tree for the example given i Exercise 5 (based on Exercise 4).

Assume that there is a common cause failure (CCF) that can lead to a simoultaneously failure of both pumps. It is assumed that 10% of the total failure rate is cause by such a common cause.

Problem 1

Construct the fault tree in this siutation by including a basic event representing a common cause. This event should be included for both pumps.

Problem 2

Find Q0

Hint: Download CARA FaultTree file (Right click the link, and save)