Answer Happy

(c) (d) Assume that a system can fail due to preventive maintenance-related human error and non-human error. The values of human and non-human error rates are 0.0002 errors per hour and 0.005 failures per hour, respectively. Calculate the probability of the system failure due to maintenance error for a 100-h mission. Assume that for a system the following data are specified: As = 0.004 failures per hour, Ame=0.0001 errors per hour, Ad = 0.001 failures per hour, μs = 0.02 repairs per hour, μme=0.008 repairs per hour, Hd = 0.06 repairs per hour. [3 marks] Calculate the steady-state probability of system degradation due to maintenance error. [5 marks]