FST Fire Prevention & Hazardous Materials Management 4 — Questions and Answers
Question 1: Which NFPA standard governs the storage, handling, and use of liquefied petroleum gases (LP-Gas)?
- NFPA 30
- NFPA 54
- NFPA 58 (Correct answer)
- NFPA 72
Correct answer: NFPA 58
NFPA 58, the Liquefied Petroleum Gas Code, regulates the safe storage, handling, transportation, and use of LP-Gas.
Question 2: In a Type II construction building, what is the fire resistance rating of the exterior bearing walls?
- 0 hours
- 1 hour
- 2 hours (Correct answer)
- 3 hours
Correct answer: 2 hours
Type II construction uses noncombustible materials, and exterior bearing walls typically carry a 2-hour fire resistance rating in Type II-A.
Question 3: An oxidizer classified as Class 3 under NFPA 430 is characterized by which property?
- It will moderately accelerate burning when mixed with combustibles
- It can cause fire or explosion when it contacts combustibles or water (Correct answer)
- It does not support combustion by itself
- It is a strong oxidizer that poses minimal hazard
Correct answer: It can cause fire or explosion when it contacts combustibles or water
NFPA 430 Class 3 oxidizers are strong oxidizers that can cause fire or explosion when they contact combustibles, organics, or water.
Question 4: What is the correct action when a Tier II report submitted under EPCRA (SARA Title III) identifies a facility storing 10,000 lbs of a hazardous chemical?
- No action required below 50,000 lbs
- File the report with the State Emergency Response Commission, LEPC, and local fire department (Correct answer)
- Report directly to EPA headquarters only
- Submit only to OSHA within 30 days
Correct answer: File the report with the State Emergency Response Commission, LEPC, and local fire department
EPCRA Section 312 requires Tier II reports to be submitted to the SERC, LEPC, and local fire department annually for applicable chemicals above threshold quantities.
Question 5: A facility produces a regulated substance in a quantity exceeding its threshold quantity under EPA's Risk Management Program (RMP). What document must the facility submit to the EPA?
- Hazard Communication Plan
- Risk Management Plan (Correct answer)
- Facility Response Plan
- Spill Prevention, Control, and Countermeasure Plan
Correct answer: Risk Management Plan
Facilities with regulated substances above threshold quantities must submit a Risk Management Plan (RMP) to the EPA as required by Clean Air Act Section 112(r).
Question 6: Which type of ventilation is most effective at preventing the accumulation of flammable vapors at floor level in a flammable liquid storage room?
- High-level exhaust only
- Low-level exhaust near the floor with high-level makeup air (Correct answer)
- Ceiling fans circulating air downward
- Natural ventilation through skylights
Correct answer: Low-level exhaust near the floor with high-level makeup air
Flammable vapors are heavier than air and sink to floor level, so low-level exhaust combined with high-level makeup air effectively removes them.
Question 7: What is the significance of a chemical's flashpoint when conducting a fire inspection?
- It indicates the temperature at which a chemical auto-ignites without an ignition source
- It is the minimum temperature at which a liquid produces sufficient vapors to ignite momentarily when exposed to an ignition source (Correct answer)
- It defines the boiling point of a hazardous liquid
- It measures the rate of heat release during combustion
Correct answer: It is the minimum temperature at which a liquid produces sufficient vapors to ignite momentarily when exposed to an ignition source
Flashpoint is the minimum liquid temperature at which vapors form a momentarily ignitable mixture with air when exposed to an ignition source, critical for classification and storage requirements.
FST Fire Prevention & Hazardous Materials Management 4
Which NFPA standard governs the storage, handling, and use of liquefied petroleum gases (LP-Gas)?