Beta Model
Input Parameter: β
Unavailability of CCF events:
Q1 = (1 − β) * Qt
Qn = 0 (k = 2, 3, ..., n − 1)
Qn = β * Qt
Where:
Qn = The total unavailability of each basic event in the CCF group.
n = The number of basic events in the CCF group.
For n = 4:
Input Parameter: β
Unavailability of CCF events:
Q1 = (1 − β) * Qt
Q2 = 0
Q3 = 0
Q4 = β * Qt