Inspection, Testing and Servicing Principal

FDNY S61 Gaseous Fire Extinguishing Systems Inspection, Testing and Servicing Principal (Citywide) Exam Practice Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• Which of the following is a primary component of a gaseous fire

suppression system?

• Water pump
• Agent cylinder
• Hose reel
• Fire hydrant

Answer: B

Rationale: The agent cylinder stores the extinguishing agent, which is

the core component of a gaseous fire suppression system.

• What is the typical inspection frequency for a clean agent system

under NFPA standards? 1 / 4

• Every month
• Every 2 years
• Annually
• Every 5 years

Answer: C

Rationale: NFPA requires annual inspections for clean agent systems

to ensure operational readiness.

• Which of the following is considered a “clean agent” in fire

suppression?

• Carbon dioxide
• FM-200 (HFC-227ea)
• Water mist
• Dry chemical

Answer: B

Rationale: FM-200 is a clean agent that leaves no residue and is widely

used in sensitive electronic areas.

• The maximum discharge time for a clean agent system should not

exceed:

• 5 seconds
• 10 seconds
• 15 seconds
• 30 seconds

Answer: D 2 / 4

Rationale: NFPA 2001 specifies that agent discharge should be

completed within 30 seconds to ensure rapid fire suppression.

• Which NFPA standard governs clean agent fire extinguishing systems?

A) NFPA 13

B) NFPA 25

C) NFPA 72

D) NFPA 2001

Answer: D

Rationale: NFPA 2001 provides requirements for the design,

installation, inspection, testing, and maintenance of clean agent systems.

• What type of pressure gauge is typically found on a clean agent

cylinder?

• Bourdon tube
• Diaphragm
• Direct reading
• Differential

Answer: C

Rationale: Direct reading gauges provide the system’s cylinder

pressure, ensuring the agent is within operational limits.

• Which device activates the release of a gaseous extinguishing system?
• Pull station
• Sprinkler head 3 / 4

• Actuation mechanism
• Pressure relief valve

Answer: C

Rationale: The actuation mechanism, either electrical or mechanical,

triggers the release of the extinguishing agent.

• During inspection, which of the following indicates that a cylinder

needs hydrostatic testing?

• Corrosion on valve
• Date stamp exceeding test interval
• Low agent pressure
• Bent discharge nozzle

Answer: B

Rationale: Cylinders must be hydrostatically tested according to the

manufacturer’s recommended interval.

• Which type of gaseous agent is primarily used for high-value electronic

equipment protection?

A) CO2

• Halon 1301
• Foam
• Water

Answer: B

Rationale: Halon 1301 is ideal for electronics because it extinguishes

fires rapidly without causing damage.

• / 4