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Which Texas relevant best practice improves response for first arriving crews?
Place remote annunciator near main entrance or command location
Definition: Providing annunciation where responders arrive speeds size up and reduces delay. Reference: "NFPA" 72 (2022) Protected Premises practices.
What must be completed before owner acceptance?
100 percent device testing with documented results
Definition: Acceptance testing verifies every initiating and notification device and sequence functions. Reference: "NFPA" 72 (2022) Chapter 14.
Which events require occupant notification to take precedence over non emergency signals?
Both of these
Definition: Fire alarm notification takes priority over non similar signals to avoid masking emergency cues. Reference: "NFPA" 72 (2022) Chapter 18.
In sleeping rooms, fire audible appliances must produce what signal pattern and frequency?
Temporal 3 at 520 hertz low frequency
Definition: Sleeping areas use low frequency 520 hertz appliances for fire with Temporal 3 cadence to improve awakening. Reference: "NFPA" 72 (2022) Notification; research based requirement.
Public mode audibility should be at least how much above average ambient?
15 "dBA"
Definition: Provide about fifteen "dBA" above average ambient for public mode audibility. Reference: "NFPA" 72 (2022) Chapter 18.
Minimum level at the pillow in sleeping rooms is typically:
75 "dBA"
Definition: Aim for at least seventy five "dBA" at the pillow unless a listed low frequency signal is provided. Reference: "NFPA" 72 (2022) Chapter 18.
Where should duct smoke detectors be installed on supply systems?
Downstream of filters and ahead of branch connections
Definition: Locate downstream of filters and before branches to detect smoke prior to distribution. Reference: "NFPA" 72 (2022) Duct Detection.
If a duct detector is used only to shut down equipment, what signal should it generate at the panel?
Supervisory
Definition: Equipment control only duct detection annunciates supervisory, not general alarm. Reference: "NFPA" 72 (2022) Application of detectors.
Manual pull stations should be installed:
On the path of egress near exit doors, typically within about 5 feet
Definition: Place pull stations on egress paths near exit doorways for quick access. Reference: "NFPA" 72 (2022); "IBC" (2021) §907.
Beam smoke detectors are most appropriate for:
High or wide open spaces like atria and warehouses
Definition: Beam detectors cover long spans and high ceilings efficiently when point detectors are impractical. Reference: "NFPA" 72 (2022) Initiating Devices.
Elevator Phase One recall is typically initiated by:
Smoke detection in lobbies, hoistways, or machine rooms (per design)
Definition: Smoke detection in designated elevator areas triggers recall to a primary landing. Reference: "NFPA" 72 (2022) Elevator interfaces; building code coordination.
Kitchen hood fire extinguishing system connection to the fire alarm should:
Initiate fire alarm and programmed control functions
Definition: Discharge is a fire event that activates alarm and required control actions per the sequence. Reference: "NFPA" 72 (2022) Emergency control functions.
Smoke detector sensitivity must be checked:
Within one year after installation and then at intervals per code (often every two years unless extended)
Definition: Verify sensitivity after installation and periodically thereafter; performance based options may adjust intervals. Reference: "NFPA" 72 (2022) Chapter 14.
Short circuit isolators on addressable loops are used to:
Localize shorts so the rest of the loop continues to operate
Definition: Isolators segment faults to improve survivability of "SLC" pathways. Reference: "NFPA" 72 (2022) Circuits and Pathways.
Point text at the panel/annunciator should:
Match the drawings with clear locations and functions
Definition: Clear, consistent labeling speeds response and reduces errors. Reference: "NFPA" 72 (2022) Documentation and Annunciation.
Where should the end of line resistor be installed on a Class B initiating circuit?
At the last device on the run
Definition: Placing "EOL" at the last device supervises the entire circuit for opens/grounds. Reference: "NFPA" 72 (2022) Circuits and Pathways.
Which networked pathway classification applies to supervised Ethernet "IP" fire alarm transport?
Class N
Definition: Class N provides requirements for supervised network pathways. Reference: "NFPA" 72 (2022) Chapter on Pathway Classifications.
Which pathway class uses a return path so a single open does not isolate devices?
Class A
Definition: Class A includes a redundant return path to maintain continuity around a single break. Reference: "NFPA" 72 (2022) Circuits and Pathways.
What is a common nominal starting spacing for spot smoke detectors on smooth ceilings (subject to listing)?
30 feet
Definition: Thirty feet nominal is a typical design starting point; always follow the device listing and room features. Reference: "NFPA" 72 (2022) Initiating Devices.
Corridor smoke detector spacing for corridors up to about 10 feet wide is often:
About every 41 feet on center
Definition: Corridor rules allow wider spacing than open areas due to channeling; verify with code and listings. Reference: "NFPA" 72 (2022) Initiating Devices.
If multiple supplies feed strobes visible together, you must:
Ensure listed synchronization so flashes align
Definition: Visible appliances in the same field of view must flash in sync to avoid disorientation. Reference: "NFPA" 72 (2022) Chapter 18.
Public mode visible notification candela is chosen by:
Using tables based on room size and mounting height
Definition: Use listed candela tables and mounting height to assure visibility. Reference: "NFPA" 72 (2022) Chapter 18.
Combination fire and carbon monoxide systems must provide:
Distinct tones/patterns and indicators for each hazard
Definition: Provide distinct patterns (e.g., T 3 fire, T 4 carbon monoxide) and labeling so occupants take correct actions. Reference: "NFPA" 72 (2022) Notification.
Which cable types are listed for power limited fire alarm circuits per "NEC" Article 760?
FPL, FPLR, FPLP
Definition: Use listed fire alarm cables: FPL (general), FPLR (riser), and FPLP (plenum). Reference: "NEC" 70 (2020) Article 760.
Which cable can be installed in environmental air plenums without added raceway when per listing?
FPLP
Definition: FPLP is plenum rated; otherwise place lower ratings in suitable raceways. Reference: "NEC" 70 (2020) Article 760.