Where smoke detectors are installed for protection during construction, they shall be cleaned and verified...

If smoke detectors are installed during construction, they are likely exposed to dust or debris. NFPA 72 requires that these becleaned and tested for sensitivitybeforefinal commissioningof the system.

NFPA 72 (2022), Section 17.7.1.11:

“Where detectors are used for protection during construction, they shall be cleaned or replaced prior to final system commissioning.”

This ensures proper performance and prevents false alarms.

Correct answer: B. Final commissioning

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