Answer Happy

The Fault Tree below shows the events that may lead to an artificial wake-up system failing. If you were an engineer looking to improve the system, which event would you focus your efforts on improving the failure rate for? [Select] Why would you select this event? [Select ]

Diagram adapted from P L Clemens 1993, Sverdrup Fault Tree Analysis Artificial Wakeup System A Artificial Wakeup Fails Alarm Fail Nocturnal Deafness Negligible Main Plug-in Clock Fails Backup (Windup) Clock Fails Faulty Clock Power Faulty Mech- anism Forget to Set 8. x 100 Forget Set Forget Wind 11., 10 Outage 4. x 10 '8 x 10 1. 102 Electrical Fault 13 x 10-4 Mechanical Fault 8. x 100 Hour Hand Falls Of Hour Hand Jams Works 2 4 x 10