CCP Fire Alarm & Suppression Testing 3 — Questions and Answers
Question 1: When commissioning a kitchen hood wet chemical suppression system, what operational test must be performed after installation?
- A simulated discharge using nitrogen to verify nozzle coverage (Correct answer)
- An actual chemical agent discharge to verify nozzle pattern
- A hydrostatic test of agent cylinders at 300 psi
- A flow test using water at design pressure
Correct answer: A simulated discharge using nitrogen to verify nozzle coverage
Kitchen suppression systems are functionally tested using nitrogen or air to verify actuation, nozzle positioning, and fuel shutoff without consuming the chemical agent.
Question 2: Which document must be completed and posted at the fire alarm control panel upon project completion per NFPA 72?
- Certificate of Occupancy
- Record of Completion (Correct answer)
- Commissioning Report
- As-Built Drawing Set
Correct answer: Record of Completion
NFPA 72 requires a Record of Completion form to be completed by the installing contractor and permanently posted at or near the fire alarm control panel.
Question 3: A commissioning agent is verifying a dry-pipe sprinkler system's trip test. Which condition must be met for the system to pass?
- Water must reach the inspector's test valve within 60 seconds of valve operation
- The dry-pipe valve must trip within 60 seconds and water must reach the inspector's test connection within 60 seconds of tripping (Correct answer)
- The alarm must sound within 15 seconds of valve tripping
- Air pressure must drop to zero before the clapper opens
Correct answer: The dry-pipe valve must trip within 60 seconds and water must reach the inspector's test connection within 60 seconds of tripping
Per NFPA 13, the dry-pipe valve must trip within 60 seconds of opening the inspector's test connection, and water must reach the connection within an additional 60 seconds.
Question 4: What is the minimum standby power duration required for a fire alarm system in a building without a secondary power source per NFPA 72?
- 4 hours
- 12 hours
- 24 hours (Correct answer)
- 72 hours
Correct answer: 24 hours
NFPA 72 requires fire alarm systems to operate on standby battery power for a minimum of 24 hours, followed by 5 minutes of full alarm load.
Question 5: During commissioning of a gaseous suppression system, the commissioning agent must verify the pre-discharge warning time. What is the minimum required warning time per NFPA 2001?
- 10 seconds
- 30 seconds (Correct answer)
- 60 seconds
- No minimum is specified
Correct answer: 30 seconds
NFPA 2001 requires a minimum 30-second pre-discharge time delay to allow occupant egress before clean agent release, unless a life safety hazard prevents this.
Question 6: A commissioning report for a fire suppression system must include which of the following for regulatory acceptance?
- Only the test pass/fail results
- System description, test procedures, test results, deficiencies found, and corrective actions taken (Correct answer)
- Manufacturer's installation instructions only
- The contractor's insurance certificate
Correct answer: System description, test procedures, test results, deficiencies found, and corrective actions taken
A complete commissioning report documents the system description, all tests performed with procedures and results, deficiencies identified, and how each was resolved.
Question 7: When testing a fire alarm notification appliance circuit (NAC), what is the primary measurement a commissioning agent must verify?
- The voltage at the control panel output terminals only
- The sound pressure level at each appliance location
- The current draw does not exceed the circuit capacity (Correct answer)
- The color of wiring matches the design drawings
Correct answer: The current draw does not exceed the circuit capacity
The total connected load on each NAC must be verified to not exceed the control panel's rated circuit capacity, ensuring proper operation during alarm conditions.
CCP Fire Alarm & Suppression Testing 3
When commissioning a kitchen hood wet chemical suppression system, what operational test must be performed after installation?