Final answer:
The fire alarm system should automatically initiate an evacuation when activated, but it's not standard to change the alarm tone, reset the system, or activate the heating system. Smoke detectors use Americium to detect smoke through ionization, and building codes require safety measures like smoke detectors and fire sprinklers.
Step-by-step explanation:
When a fire alarm system is activated in a building, certain protocols must automatically occur to ensure the safety of the inhabitants. The activation can be triggered by several devices such as a manual pull, smoke sensor, sprinkler system, or a kitchen range hood extinguisher. In response to an alarm, an evacuation should be automatically signaled to all occupants of the building. However, triggering a different alarm tone, resetting the entire system, or activating the building's heating system are not standard automated responses upon the activation of the fire alarm system. Instead, sounds specific to evacuation are generated, and the heating system's activation is unrelated to the fire alarm protocol.
Radiation plays a critical role in the functionality of smoke detectors, as in the case of Americium used to ionize the air between the detector's metal plates. This sets up a current, which, when disrupted by smoke, triggers the alarm, thereby warning of potential fire.
It's important to note that building codes in many developed countries require structures to meet safety regulations, including the presence of functioning smoke detectors and fire sprinkler systems to provide a minimum level of security for occupants.