DE Fire Alarm case studies
DE Fire Alarm · Put your knowledge to work in context.
The Delaware Fire Alarm Contractor License credential is intended for individuals and firms that design, install, service, or inspect fire alarm systems in Delaware. The exam verifies knowledge of fire alarm fundamentals, NFPA 72 requirements, and Delaware-specific regulations. The DE Fire Alarm case studies are 5 cases and about 4,278 words.
1Third-Floor Addition Pushes a 24 V Panel Past Its Listed Battery and NAC Capacity
Your company is replacing the addressable panel in a 22,000 sq ft, two-story medical office building in Newark, Delaware. The new panel is a 24 V addressable unit with a built-in power supply, four NAC outputs, and a listed standby battery capacity of two 7 Ah, 12 V sealed lead-acid batteries connected in series.
816 words, about 4 min2Hotel Corridor Spacing and the Elevator Recall Detector Behind a Soffit
A 7-story, 118-room hotel in Dover, Delaware, is under renovation. Each guest floor has one straight corridor 6 ft wide and 140 ft long with a 9 ft smooth ceiling, and one elevator lobby opening off the side of the corridor at the 90 ft point.
851 words, about 4 min3Corridor Horn Audit Fails the Pillow Test in a Reconverted Hotel Wing
A 40-room wing of a Dover hotel is being converted from long-term apartments back to transient guest rooms. Measured ambient sound is 52 dBA in the corridor, and inside a typical guest room 58 dBA with the PTAC running (42 dBA with it off).
810 words, about 4 min4"100% Tested, System Normal" - Auditing a Deficient Annual Inspection
A 92,000 sq ft distribution center with 18,000 sq ft of office in New Castle, Delaware, has a six-year-old addressable system: 96 smoke detectors, 22 manual pull stations, four duct detectors, three NACs with 41 appliances, and two 12 V, 18 Ah batteries. The annual inspection report from a new subcontractor states "100% tested, system normal." Your review of the panel history and the technician's field notes shows: a walk test covering 34 of the 96 detectors; smoke introduced at each tested detector with verification only at the remote annunciator, never at the detector's own indicator; duct detectors "tested by airflow" with no smoke or test-magnet activation and no sampling tube inspection; batteries "tested" by reading 26.8 V at the charger terminals; no sensitivity test record since the 2019 installation; three supervisory troubles acknowledged and cleared without investigation; and no updated record of completion.
897 words, about 4 min5Class A SLC Sabotaged and Riser Run Without Survivability in a 78 ft Building
A 6-story, 78 ft office building in Wilmington is receiving a new addressable system during a core-and-shell renovation. The drawings specify a Class A signaling line circuit, 2-hour pathway survivability for the riser serving floors 4 through 6, and installation per NEC Article 760.
904 words, about 5 min