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FDNY S12 Supervision of Sprinkler Systems (Citywide) Practice Exam Questions And ( Answers) Plus Rationales 2026 Q&A Instant Download Pdf
1.
The primary purpose of a sprinkler system is to:
- Extinguish all fires entirely
- Control or suppress fire until additional help arrives
- Detect smoke only
- Provide building ventilation
Rationale: Sprinkler systems are designed to control or suppress fire
growth, not guarantee full extinguishment.
2.
A sprinkler system control valve must be:
- Hidden behind ceiling tiles 1 / 4
- Locked closed
- Supervised or locked in the open position
- Left partially open
Rationale: Control valves must remain open and be supervised or locked to
prevent unauthorized closure.
3.
The main drain test is used to determine:
- Water temperature
- Pipe corrosion
- Adequacy of water supply and possible obstructions
- Alarm panel battery condition
Rationale: A main drain test assesses supply pressure changes indicating
potential problems or obstructions.
4.
The S-12 Certificate of Fitness holder is responsible for:
- Building structural inspections
- Employee training
- Daily inspection and supervision of sprinkler systems
- Fire drill coordination
Rationale: The S-12 covers supervision of sprinkler systems specifically.
5. 2 / 4
The automatic sprinkler alarm gong activates when:
- A smoke detector activates
- Someone opens the test valve
- Water flows through the alarm check valve
- A manual pull station is used
Rationale: Waterflow causes the mechanical gong to ring.
6.What is the purpose of a fire department connection (FDC)?
- Drains water after tests
- Allows FDNY to supplement the sprinkler system water supply
- Activates alarms
- Provides ventilation
Rationale: FDC permits firefighters to boost system pressure during fire
operations.
7.
A sprinkler head typically activates due to:
- Smoke concentration
- Heat melting the fusible element
- Excess humidity
- Manual activation
Rationale: Sprinklers respond to heat, not smoke.
8. 3 / 4
The minimum pressure required on a typical sprinkler system air gauge for
dry systems is primarily determined by:
- Chemical composition
- Manufacturer and system design
- Building height only
- Valve age
Rationale: Pressure settings must match system design requirements.
9.
A system impairment involves:
- Monthly inspections
- Any shutdown or reduction of system effectiveness
- Alarm gong testing
- Routine valve lubrication
Rationale: Impairment means the system cannot operate at full fire
protection capacity.
10.
During a fire pump weekly test, the pump must run for at least:
- 1 minute
- 5 minutes
- 10 minutes
- 30 minutes
- / 4
Rationale: Standard fire pump weekly churn test is at least 10 minutes.
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