What causes a dust explosion?

A) Rapid combustion of fine solid particles.

B) Formation of shock waves due to compression and heat.

C) Sudden release of large quantities of flammable liquid and vapor.

D) Failure of a pressurized vessel containing gas or liquid.

What does atmospheric stability refer to?

B) The vertical temperature gradient in the atmosphere

A) The resistance of the atmosphere to toxic releases

C) The ability of the atmosphere to dilute toxic materials

D) The horizontal movement of air in the atmosphere

Which of the following best describes a hazard in a chemical process plant?

Any potential source of harm, regardless of frequency or probability

Any condition that poses a risk to human health

Any event that causes damage to property or the environment

Any accident that occurs due to inadequate safety measures

What is the primary cause of damage in vapor cloud explosions?

C) Shock wave created from fast expansion of combustion products

A) Compression and heat due to mixing with combustion products

B) Rapid combustion of fine solid particles

D) Sudden release of large quantities of flammable liquid and vapor

Which method is used to estimate the power of a vapor cloud explosion by equating it to an equivalent mass of TNT?

B) Numerical 3D CFD computer models

Thermal hazards in a chemical process plant can result from:

Extreme temperatures in solids, liquids, or gases

What is the main advantage of the TNT method for estimating explosion overpressure?

D) It offers simplicity of use in calculations and characterization.

A) It calculates the time evolution of the explosion.

B) It accounts for the non-ideality of the explosion.

C) It considers the space configuration where the explosion takes place.

Which of the following is NOT a stage in the cloud expansion mechanism during an explosion?

A) Stage 5: Chemical energy transformation into mechanical energy

B) Stage 2: Wrinkled-flame front appearance

C) Stage 4: Formation of shock wave due to compression and heat

D) Stage 1: Laminar flame propagation

Which explosion model is based on turbulent analysis and empirical relations?

C) Numerical 3D CFD computer models

Which of the following is NOT a release mitigation measure for toxic releases?

A) Early Vapor Detection Sensors

C) Routine maintenance procedures

What factor affects the ground-level concentration of a dispersed plume?

D) Height of the release above ground

Loss prevention in chemical process plants primarily focuses on:

Identifying and mitigating hazards

Maximizing production efficiency

Which factor determines the effective release height of a toxic material?

C) Initial buoyancy and momentum

What is the primary purpose of release mitigation measures?

C) To reduce the risk of release incidents

D) To increase production efficiency

What incident is cited as an example of a toxic release in Seveso, Italy?

A) Release of material containing dioxin

B) Aerosol mixture containing potassium arsenite

C) Runaway reaction causing release of methyl isocyanate

D) Explosion resulting from inadequate emergency plan

What does a temperature inversion condition lead to?

B) Trapping of smoke and pollution

A) Rapid dispersion of toxic materials

D) Decreased atmospheric pressure

Quiz on Hazards, Fire, and Explosion

Quiz

•

Other

•

University

•

Practice Problem

•

Hard

Dinie Muhammad

FREE Resource

60 questions

Show all answers

1.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the key difference between fire and explosion?

Evaluate responses using AI:

OFF

2.

OPEN ENDED QUESTION

3 mins • 1 pt

Which of the following is NOT a component of the fire triangle?

Evaluate responses using AI:

OFF

3.

OPEN ENDED QUESTION

3 mins • 1 pt

Which type of fuel is generally easier to ignite?

Evaluate responses using AI:

OFF

4.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the main characteristic of a pool fire?

Evaluate responses using AI:

OFF

5.

OPEN ENDED QUESTION

3 mins • 1 pt

Which factor distinguishes a jet fire from a pool fire?

Evaluate responses using AI:

OFF

6.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the main consequence of a flash fire?

Evaluate responses using AI:

OFF

7.

OPEN ENDED QUESTION

3 mins • 1 pt

What type of fire can result from the sudden ignition of a cloud of flammable gases?

Evaluate responses using AI:

OFF

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Quiz on Hazards, Fire, and Explosion

60 questions

What is the key difference between fire and explosion?

Which of the following is NOT a component of the fire triangle?

Which type of fuel is generally easier to ignite?

What is the main characteristic of a pool fire?

Which factor distinguishes a jet fire from a pool fire?

What is the main consequence of a flash fire?

What type of fire can result from the sudden ignition of a cloud of flammable gases?

Which parameter is NOT considered when evaluating an explosion?

Which type of fire is examined mostly in risk analysis concerning consequences for people?

What determines the duration of a pool fire?

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