A workshop has been installed with a fire suppression system to tackle fire. The suppression system comprises a smoke detector connected by a power supply to a mechanism for releasing carbon dioxide for suppression of fire. It has been estimated that a fire will occur once every five year. Reliability data for the system components are as follows: Component Reliability Smoke detector 0.9 Power supply 0.95 Carbon dioxide release mechanism 0.9 Construct the event tree for the above scenario to estimate the frequency of an uncontrolled fire due to failure of the fire protection system.