Based on the system illustrated in the figure below, draw a fault tree to represent a safe failure (spurious trip) due to the failure of the TX1/2 subsystem; that is, the top event is “Nuisance trip due to failure of transmitter subsystem.” Transmitter voting is 1oo2. The following basic events are to be used:

• Safe failure of TX1

• Safe failure of TX2

• Loss of power to transmitter Using the following data, calculate the probability of a nuisance trip.

• Probability of safe failure for a 1-year interval of TX1 = 0.02

• Probability of safe failure for a 1-year interval of TX2 = 0.02

• Probability of loss of power for a 1-year interval to transmitters

= 0.01

Transcribed Image Text:

LOGIC 1002 TX1 TX2 System for Exercise 5.7 Vessel TX1 TX2 1002 Configuration R