FLSD Building Systems Oversight 4 — Questions and Answers
Question 1: When a Fire Life Safety Director receives an alarm from the building automation system (BAS) indicating a chiller plant failure during summer, what is the primary fire safety concern?
- Loss of cooling may cause server room overheating and potential electrical fires (Correct answer)
- Chiller failures automatically trigger sprinkler systems
- HVAC shutdown disables all smoke detection capabilities
- Chiller failures require immediate building evacuation per FDNY protocol
Correct answer: Loss of cooling may cause server room overheating and potential electrical fires
Chiller failures can cause critical spaces like server rooms to overheat, creating electrical fire risks that the FLSD must monitor and mitigate.
Question 2: A building's emergency generator is rated at 750 kW. During a power outage test, actual load measured is 820 kW. What action must the FLSD take?
- Document the overload and schedule load shedding of non-critical systems (Correct answer)
- Increase the generator fuel supply to compensate for the additional load
- Immediately shut down the generator to prevent damage
- Request FDNY approval to exceed the rated capacity temporarily
Correct answer: Document the overload and schedule load shedding of non-critical systems
An overloaded generator must have non-critical loads shed to bring consumption within rated capacity and ensure life safety systems remain powered.
Question 3: Under NYC FC, how frequently must a high-rise building's fire pump be subjected to a full flow test (annual flow test)?
- Every 5 years
- Annually (Correct answer)
- Every 3 years
- Monthly
Correct answer: Annually
NFPA 25 and NYC FC require annual full-flow testing of fire pumps to verify they meet rated performance.
Question 4: Which building system component is responsible for maintaining positive pressure in stairwells during a fire to prevent smoke infiltration?
- Return air fans
- Stairwell pressurization fans (Correct answer)
- Exhaust dampers on each floor
- Supply air handling units serving occupied floors
Correct answer: Stairwell pressurization fans
Stairwell pressurization fans inject fresh air to maintain pressure differentials that prevent smoke from entering evacuation routes.
Question 5: A building's standpipe system shows a pressure reading of 65 psi at the highest outlet with no flow. FDNY requires a minimum residual pressure of 100 psi at the highest outlet under flow. What does this static reading indicate?
- The system is operating normally; static and residual pressures differ
- The system is deficient and likely cannot meet flow requirements (Correct answer)
- The booster pump needs to be activated manually
- Standpipe pressure is only measured at street level, not at the highest outlet
Correct answer: The system is deficient and likely cannot meet flow requirements
A static pressure well below the required residual pressure under flow strongly indicates the system cannot deliver minimum required pressure during firefighting operations.
Question 6: During building systems oversight, an FLSD discovers that an elevator designated as a firefighters' service elevator has been placed out of service for modernization. What is the required action?
- Notify FDNY and implement alternate arrangements as required by the fire safety plan (Correct answer)
- Post a sign at the elevator lobby and continue normal operations
- Designate the adjacent freight elevator automatically without FDNY notification
- Suspend all fire drills until the elevator is restored
Correct answer: Notify FDNY and implement alternate arrangements as required by the fire safety plan
Taking a firefighters' service elevator out of service requires FDNY notification and implementation of compensatory measures per the approved fire safety plan.
Question 7: What is the purpose of a fire department connection (FDC) on a building's sprinkler or standpipe system?
- To provide a test outlet for annual inspections
- To allow FDNY to supplement system pressure and water supply using pumper apparatus (Correct answer)
- To serve as a manual shutoff point for building staff
- To connect the building's BAS to FDNY dispatch systems
Correct answer: To allow FDNY to supplement system pressure and water supply using pumper apparatus
The FDC allows FDNY pumper trucks to inject additional water under pressure into the system when municipal supply alone is insufficient.
FLSD Building Systems Oversight 4
When a Fire Life Safety Director receives an alarm from the building automation system (BAS) indicating a chiller plant failure during summer, what is the primary fire safety concern?