NFPA NFPA 30 Flammable and Combustible Liquids 1 — Questions and Answers
Question 1: Under NFPA 30, which classification applies to a liquid with a flash point below 73°F and a boiling point below 100°F?
- Class IA (Correct answer)
- Class IB
- Class IC
- Class II
Correct answer: Class IA
NFPA 30 classifies liquids with a flash point below 73°F and a boiling point below 100°F as Class IA flammable liquids.
Question 2: According to NFPA 30, what is the maximum container size permitted for Class I liquids in glass containers?
- 1 pint
- 1 quart (Correct answer)
- 1 gallon
- 2.5 gallons
Correct answer: 1 quart
NFPA 30 limits glass containers for Class I flammable liquids to a maximum size of 1 quart.
Question 3: Under NFPA 30, what is the minimum separation distance between an above-ground flammable liquid storage tank and a property line or building?
- 5 feet
- 10 feet (Correct answer)
- 20 feet
- 50 feet
Correct answer: 10 feet
NFPA 30 requires a minimum separation of at least 10 feet from a tank to a property line that can be built upon, depending on tank size and class.
Question 4: According to NFPA 30, what is required around above-ground flammable liquid tanks to contain spills?
- Gravel bed at least 6 inches deep
- Secondary containment capable of holding 100% of the largest tank volume (Correct answer)
- Concrete curbing 4 inches high
- Sand barrier 12 inches wide
Correct answer: Secondary containment capable of holding 100% of the largest tank volume
NFPA 30 requires secondary containment (diked areas or equivalent) capable of holding 100% of the volume of the largest tank within the impoundment area.
Question 5: Under NFPA 30, which liquid class has a flash point at or above 100°F and below 140°F?
- Class IB
- Class IC
- Class II (Correct answer)
- Class IIIA
Correct answer: Class II
NFPA 30 classifies liquids with a flash point at or above 100°F and below 140°F as Class II combustible liquids.
Question 6: According to NFPA 30, what is the maximum quantity of Class I and Class II liquids that may be stored in a single cabinet without special permits?
- 30 gallons
- 60 gallons (Correct answer)
- 120 gallons
- 240 gallons
Correct answer: 60 gallons
NFPA 30 limits flammable liquid storage cabinets to a maximum of 60 gallons of Class I and Class II liquids combined.
NFPA NFPA 30 Flammable and Combustible Liquids 1
Under NFPA 30, which classification applies to a liquid with a flash point below 73°F and a boiling point below 100°F?