Detector placement in high rack storage areas should be located at which locations?

Detector placement in high rack storage areas should be located at which locations?

• A. Ceiling only
• B. Floor level only
• C. Intermediate levels in the racks and ceiling above isle
• D. Walls only

Answer: (C)

In high-piled storage areas, smoke and heat don’t just rise to the ceiling; they can spread inside the racks themselves. Detectors placed only at the ceiling may miss or delay detecting a fire that starts within the rack contents, while floor-height detectors would miss smoke that rising into the upper rack spaces. The best placement uses detectors at intermediate levels inside the racks as well as at the ceiling above the aisles. This setup catches smoke both inside the rack compartments and in the open space above the aisles, providing earlier detection and a quicker alarm. Placing detectors only on walls or at a single height won’t reliably detect fires that start inside the stacks or in the interstitial rack spaces.

In high-piled storage areas, smoke and heat don’t just rise to the ceiling; they can spread inside the racks themselves. Detectors placed only at the ceiling may miss or delay detecting a fire that starts within the rack contents, while floor-height detectors would miss smoke that rising into the upper rack spaces. The best placement uses detectors at intermediate levels inside the racks as well as at the ceiling above the aisles. This setup catches smoke both inside the rack compartments and in the open space above the aisles, providing earlier detection and a quicker alarm. Placing detectors only on walls or at a single height won’t reliably detect fires that start inside the stacks or in the interstitial rack spaces.