Which sprinklers are designed for rapid activation during fires?

• A. Standard-response sprinklers.
• B. Quick-response sprinklers.
• C. Delayed-response sprinklers.
• D. Ordinary-temperature sprinklers.

Answer: (B)

Quick-response sprinklers are designed for rapid activation. They use a more sensitive heat-detection element (such as a smaller/more responsive glass bulb or fusible link) that triggers with less heat, causing the sprinkler to open and release water sooner after a fire starts. This faster response helps suppress flames earlier, protecting occupants and reducing property damage in low-rise residential settings. Standard-response sprinklers have a less sensitive element and take longer to activate, while delayed-response sprinklers are intentionally slower to respond. Ordinary-temperature refers to the temperature rating at which water is released, not how quickly the sprinkler reacts.