Answer :
Final answer:
Smoke detectors are preferred life-safety devices in residences and healthcare facilities due to their ability to detect smoke, which indicates a fire. Other detectors like flame, fire-gas, and rate-of-rise detectors have specific uses but are not as suitable for general occupancy. Therefore, smoke detectors play a crucial role in ensuring safety through timely alerts.
Explanation:
Preferred Detectors in Different Occupancies
From a life-safety standpoint, the preferred detectors in occupancies such as residences, health care, and institutional facilities are primarily smoke detectors.
This choice is based on the ability of smoke detectors to effectively identify the presence of smoke, which is usually an early indicator of fire. Smoke detectors use various technologies, such as ionization and photoelectric sensors, to detect smoke particles in the air. This allows them to provide timely alerts, minimizing potential harm to individuals in settings like homes or healthcare facilities.
While other detectors, such as flame detectors, fire-gas detectors, and rate-of-rise detectors, have their applications, they are less commonly employed in these spaces due to specific operational characteristics:
- Flame detectors are generally used in industrial settings where there is a high risk of flaming fires, as they respond primarily to infrared or ultraviolet radiation emitted from flames.
- Fire-gas detectors are effective for detecting the presence of explosion-prone gases but are not suited for early fire detection in ordinary occupancies.
- Rate-of-rise detectors are used in specialized applications, such as detecting rapid increases in temperature in areas where smoke detectors might not be as effective.
Ultimately, the reliability and early response capability make smoke detectors the best option for enhancing safety in residences and healthcare facilities.
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