FPE Fire Prevention & Hazard Analysis 2 — Questions and Answers
Question 1: Which NFPA standard governs the installation of portable fire extinguishers in occupancies?
- NFPA 10 (Correct answer)
- NFPA 13
- NFPA 72
- NFPA 25
Correct answer: NFPA 10
NFPA 10 covers the selection, installation, inspection, maintenance, and testing of portable fire extinguishers.
Question 2: In a Preliminary Hazard Analysis (PHA), hazards are ranked by which two factors?
- Probability and severity (Correct answer)
- Frequency and cost
- Detection time and response time
- Ignition temperature and flash point
Correct answer: Probability and severity
PHA ranks hazards using a risk matrix based on the probability of occurrence and the severity of the potential consequence.
Question 3: What is the primary purpose of a fire prevention plan required by OSHA 29 CFR 1910.39?
- To identify ignition sources and fuel hazards in the workplace (Correct answer)
- To specify suppression system design parameters
- To establish evacuation route widths
- To set sprinkler head spacing requirements
Correct answer: To identify ignition sources and fuel hazards in the workplace
OSHA's fire prevention plan requires employers to identify major fire hazards, including fuel and ignition sources, and the procedures to control them.
Question 4: A dust explosion hazard exists when a combustible dust cloud reaches a concentration above the:
- Minimum Explosible Concentration (MEC) (Correct answer)
- Lower Flammable Limit (LFL) by mass
- Minimum Ignition Energy (MIE) threshold
- Kst value of 0
Correct answer: Minimum Explosible Concentration (MEC)
The Minimum Explosible Concentration (MEC) is the lowest dust concentration in air that can propagate a deflagration when ignited.
Question 5: Under NFPA 654, what enclosure or equipment classification indicates a location where ignitable concentrations of combustible dust exist continuously?
- Class II, Division 1 (Correct answer)
- Class II, Division 2
- Class I, Zone 0
- Class III, Division 1
Correct answer: Class II, Division 1
Class II, Division 1 locations are where ignitable concentrations of combustible dust are present in the air continuously, intermittently, or periodically during normal operations.
Question 6: Which technique systematically examines deviations from design intent using guide words such as 'No,' 'More,' and 'Other Than'?
- HAZOP (Hazard and Operability Study) (Correct answer)
- Fault Tree Analysis
- Event Tree Analysis
- Failure Mode and Effects Analysis
Correct answer: HAZOP (Hazard and Operability Study)
HAZOP uses structured guide words applied to process parameters to identify deviations that could lead to hazardous conditions.
Question 7: A storage room containing flammable liquids in quantities exceeding the maximum allowable quantity (MAQ) per control area must be classified as which occupancy type under the IFC?
- High-Hazard Group H-2 or H-3 (Correct answer)
- Storage Group S-1
- Factory Group F-1
- Business Group B
Correct answer: High-Hazard Group H-2 or H-3
When flammable liquid quantities exceed the MAQ per control area, the space must be classified as a High-Hazard (H) occupancy under the International Fire Code.
FPE Fire Prevention & Hazard Analysis 2
Which NFPA standard governs the installation of portable fire extinguishers in occupancies?