Fire Safety Hazardous Materials and Special Hazard Fire Safety

Question 1

Under NFPA 30, a flammable liquid is defined as having a flash point below:

Accepted Answer

100°F (38°C)

Answer

73°F (23°C)

Answer

140°F (60°C)

Answer

200°F (93°C)

Question 2

On the NFPA 704 hazard diamond, what does the BLUE (left) quadrant indicate?

Accepted Answer

Health hazard

Answer

Flammability hazard

Answer

Reactivity hazard

Answer

Special hazard (e.g., oxidizer, water-reactive)

Question 3

A Class D fire involves which type of fuel?

Accepted Answer

Combustible metals such as magnesium, titanium, or sodium

Answer

Flammable liquids such as gasoline

Answer

Electrical equipment under energized conditions

Answer

Cooking oils and fats in commercial fryers

Question 4

Flammable liquids must be stored in approved safety cans or approved flammable storage cabinets primarily to:

Accepted Answer

Limit the accumulation of vapors and reduce ignition risk

Answer

Prevent spills from contaminating floor drains

Answer

Meet OSHA record-keeping requirements for hazardous materials

Answer

Prevent theft of high-value chemical inventory

Question 5

Which extinguishing agent is most appropriate for a fire involving energized electrical equipment (Class C fire)?

Accepted Answer

CO2 or dry chemical agent rated for Class C

Answer

Water (straight stream)

Answer

AFFF (aqueous film-forming foam)

Answer

Wet chemical (Class K agent)

Question 6

When a compressed gas cylinder must be moved, it should be transported with the valve protection cap in place and secured in an upright position primarily because:

Accepted Answer

A broken valve can cause the cylinder to become an uncontrolled projectile due to sudden pressure release

Answer

Upright cylinders are easier for one person to roll on their base

Answer

Compressed gas cylinders are too heavy to move horizontally without special carts

Answer

OSHA requires cylinders to be color-coded based on their upright orientation