FLSD FLSD Fire Prevention and Inspection 5 — Questions and Answers
Question 1: A building's fire pump fails its annual flow test, producing only 60% of its rated pressure at peak flow. What is the required response?
- Take the fire pump out of service and notify the fire department and building management immediately (Correct answer)
- Reduce the number of sprinkler heads in service to compensate for lower pressure
- Allow continued operation until the next scheduled quarterly inspection
- Install a pressure-reducing valve to stabilize the system output
Correct answer: Take the fire pump out of service and notify the fire department and building management immediately
A fire pump that cannot meet its rated performance compromises the entire sprinkler and standpipe system and must be taken out of service pending repair, with the Authority Having Jurisdiction notified.
Question 2: Under NFPA 72, what is the maximum allowable distance between heat detectors in a smooth-ceiling area with a standard 10-foot ceiling height?
- 50 feet between detectors in any direction (Correct answer)
- 30 feet between detectors in any direction
- 20 feet between detectors in any direction
- 75 feet between detectors in any direction
Correct answer: 50 feet between detectors in any direction
NFPA 72 specifies that heat detectors on smooth ceilings up to 10 feet high may be spaced no more than 50 feet apart in any direction.
Question 3: Which scenario correctly describes when a hot work permit is required in a New York City high-rise building?
- Any time welding, cutting, or grinding operations that produce sparks or open flame are performed outside a designated shop area (Correct answer)
- Only when work is performed within 10 feet of a sprinkler head
- Only for work done after normal business hours
- Only if flammable liquids are stored within 25 feet of the work area
Correct answer: Any time welding, cutting, or grinding operations that produce sparks or open flame are performed outside a designated shop area
Hot work permits are required for any spark- or flame-producing operations performed outside permanently protected shop areas, regardless of time of day or proximity to sprinklers.
Question 4: An office floor has portable space heaters plugged into power strips that are daisy-chained together. Why is this a fire hazard?
- Space heaters must be plugged directly into wall outlets because they draw high current that can overheat power strips and extension cords (Correct answer)
- Power strips are only prohibited in server rooms, not office areas
- Space heaters are classified as Class B appliances that require dedicated GFCI circuits
- Daisy-chained power strips are only a hazard when used with computers
Correct answer: Space heaters must be plugged directly into wall outlets because they draw high current that can overheat power strips and extension cords
Space heaters draw significant amperage and must be plugged directly into grounded wall outlets; using power strips or extension cords creates an overload and fire risk.
Question 5: A building's emergency voice/alarm communication system (EVACS) fails to produce intelligible speech on three upper floors during a test. What standard governs the intelligibility requirement?
- NFPA 72, which requires speech intelligibility to meet a common intelligibility scale (CIS) of 0.70 or higher (Correct answer)
- NFPA 101, which requires voice alarms to be audible at 15 dB above ambient noise only
- IBC Section 907, which requires all alarms to be tone-only in high-rise buildings
- OSHA 1910.165, which governs employee alarm systems for evacuation only
Correct answer: NFPA 72, which requires speech intelligibility to meet a common intelligibility scale (CIS) of 0.70 or higher
NFPA 72 requires that EVACS systems achieve a speech transmission index (STI) or common intelligibility scale (CIS) score of at least 0.70 to ensure occupants clearly understand emergency instructions.
Question 6: During an inspection, you find that a fire door in a corridor has been replaced with a standard hollow-core wood door. What is the immediate concern?
- The corridor fire rating is compromised because hollow-core doors do not meet fire resistance requirements (Correct answer)
- Hollow-core doors are acceptable if the corridor is less than 50 feet long
- The door is acceptable if it has a self-closing device installed
- Only metal doors are required at stairwell entries, not corridor fire doors
Correct answer: The corridor fire rating is compromised because hollow-core doors do not meet fire resistance requirements
Fire-rated corridors require fire-rated doors with appropriate labels; a hollow-core door has no fire resistance and defeats the fire compartmentalization of the corridor.
Question 7: A new tenant finishes a space and installs ceiling tiles that are not listed or rated. Why does this violate fire code?
- Ceiling tiles in fire-rated assemblies must be tested and listed to maintain the assembly's fire resistance rating (Correct answer)
- Unrated ceiling tiles are only prohibited in sprinklered buildings
- Ceiling tiles must be UL listed only when installed above a certain height
- Only tiles in exit corridors require a fire rating in commercial buildings
Correct answer: Ceiling tiles in fire-rated assemblies must be tested and listed to maintain the assembly's fire resistance rating
When a ceiling is part of a fire-rated floor/ceiling assembly, all components including tiles must be listed and part of the tested assembly to preserve the rated protection.
FLSD FLSD Fire Prevention and Inspection 5
A building's fire pump fails its annual flow test, producing only 60% of its rated pressure at peak flow.
What is the required response?