When a fire alarm system isimpacted for any period of time, certain parties must be notified bothbeforeand aftertesting or impairment. When the impairment isless than 8 hours,NFPA 72 (2022), Section 10.21.3.6 applies.
NFPA 72 (2022), Section 10.21.3.6:
"Where a system has been impaired for less than 8 hours, notification shall be made to the system owner or the owner's designated representative when the system has been returned to service." This section makes it clear that thesystem owneris the responsible party to be notified upon restoration in these shorter impairments.
Correct answer: D. System owner

NFPA 72 assigns theresponsibility for maintaining inspection and testing recordsto the owner or their designated representative. This ensures records are available when needed by the AHJ or for future inspections.
NFPA 72 (2022), Section 14.6.1:
"The property or building owner or the owner's designated representative shall be responsible for the inspection, testing, and maintenance of the system and for maintaining the records." This responsibility cannot be offloaded to the contractor or fire marshal unless formally designated by the owner.
Correct answer: D. Owner

DACTs (Digital Alarm Communicator Transmitters) are required to supervise their telephone communication paths. If theprimary line is disconnected, the system must detect and transmit a trouble signal quickly.
NFPA 72 (2022), Section 26.6.4.4.4.2.3:
"Loss of the primary means of transmission shall be annunciated at the protected premises within 4 minutes." This ensures prompt identification and correction of communication issues.
Correct answer: C. 4

NFPA 72 definesinspectionas avisual examinationof a system or component to verify that it appears to be in operating condition and is free of physical damage.
NFPA 72 (2022), Section 3.3.138 - Inspection:
"A visual examination of a system or portion thereof to verify that it appears to be in operating condition and is free of physical damage." Testing, on the other hand, involves functional activation.
Correct answer: D. Visual inspection only

Amaster boxis a type of manual fire alarm box connected directly to a public emergency reporting system (typically a municipal or fire department network). NFPA 72 requires these to be testedannuallyto ensure they still properly send signals to the public system.
NFPA 72 (2022), Table 14.4.3.2 - Inspection, Testing, and Maintenance Frequencies:
UnderPublic Emergency Alarm Reporting Systems#Master Boxes:
Test Frequency:Annually
Method:"Manual operation and verification of signal receipt at the public communication center." The test confirms the box functions mechanically and that the signal is received by the appropriate monitoring point (e.g., fire department dispatch).
Correct answer: D. Annually