In a single-path, performance-based fire alarm system, the failure to deliver the signal must be annunciated at the protected premises within how many seconds?

In a single-path, performance-based fire alarm system, the failure to deliver the signal must be annunciated at the protected premises within how many seconds?

• A. 60 seconds
• B. 200 seconds
• C. 30 seconds
• D. 120 seconds

Answer: (B)

In a single-path, performance-based fire alarm design, it’s crucial that any failure of the signaling path is made known locally as quickly as possible so occupants and responders can react and the system status can be verified. The requirement is that a failure to deliver a signal must be annunciated at the protected premises within 200 seconds. This time frame strikes a balance: it is fast enough to promptly alert on the fault and prevent silent or extended outages, but not so fast that normal transients or minor glitches cause frequent nuisance indications. Since there is only one path for signaling, there isn’t an alternate route to rely on, so the local annunciation within this window is essential for safe, timely awareness. Times like 60 seconds or 30 seconds would be too aggressive and could cause false indications, while 120 seconds does not meet the specified criterion, making 200 seconds the correct requirement.

In a single-path, performance-based fire alarm design, it’s crucial that any failure of the signaling path is made known locally as quickly as possible so occupants and responders can react and the system status can be verified. The requirement is that a failure to deliver a signal must be annunciated at the protected premises within 200 seconds. This time frame strikes a balance: it is fast enough to promptly alert on the fault and prevent silent or extended outages, but not so fast that normal transients or minor glitches cause frequent nuisance indications. Since there is only one path for signaling, there isn’t an alternate route to rely on, so the local annunciation within this window is essential for safe, timely awareness. Times like 60 seconds or 30 seconds would be too aggressive and could cause false indications, while 120 seconds does not meet the specified criterion, making 200 seconds the correct requirement.