NFPA 1033 STUDY GUIDE 2026 EXAM QUESTIONS AND
ANSWERS RATED A+
✔✔What is the OSHA standard for lockout/tagout: - ✔✔29 CFR 1910.147
✔✔Which NFPA standard helps clarify 29 CFR 1910.120 (HAZWOPER) - ✔✔NFPA
472
✔✔A backdraft or smoke explosion produces what type of damage: - ✔✔Low order
damage
✔✔A BLEVE is what type of explosion? - ✔✔Mechanical
✔✔A reaction that is SUPERsonic and cannot be vented due to speed is: -
✔✔Detonation
✔✔Damage such as walls bulged out, roof lifted, and close debris is classified as: -
✔✔Low order damage
✔✔Flash powders and smokeless power are examples of: - ✔✔Low explosives
✔✔Shattered walls and pulverized debris are examples of: - ✔✔High order damage
✔✔Fuel-air ratio that produces the highest flame speed and created most damage is: -
✔✔Mixtures slightly richer than stoichiometric
✔✔The difference between a detonation and deflagration is: - ✔✔Time
✔✔How many major types of explosions are there? - ✔✔Two
✔✔What does refraction do? - ✔✔Focuses the blast pressure
✔✔What type of explosion has a combustion reaction at slower than the speed of
sound: - ✔✔Deflagration
✔✔Which type of explosion occurs in a series with the secondary explosion being more
severe? - ✔✔Dust explosion
✔✔Indicator of fire direction on a wood wall stud: - ✔✔Beveling
✔✔An interruption of heat transfer that results in a discontinuous pattern on a surface is
known as: - ✔✔Heat shadowing
ANSWERS RATED A+
✔✔What is the OSHA standard for lockout/tagout: - ✔✔29 CFR 1910.147
✔✔Which NFPA standard helps clarify 29 CFR 1910.120 (HAZWOPER) - ✔✔NFPA
472
✔✔A backdraft or smoke explosion produces what type of damage: - ✔✔Low order
damage
✔✔A BLEVE is what type of explosion? - ✔✔Mechanical
✔✔A reaction that is SUPERsonic and cannot be vented due to speed is: -
✔✔Detonation
✔✔Damage such as walls bulged out, roof lifted, and close debris is classified as: -
✔✔Low order damage
✔✔Flash powders and smokeless power are examples of: - ✔✔Low explosives
✔✔Shattered walls and pulverized debris are examples of: - ✔✔High order damage
✔✔Fuel-air ratio that produces the highest flame speed and created most damage is: -
✔✔Mixtures slightly richer than stoichiometric
✔✔The difference between a detonation and deflagration is: - ✔✔Time
✔✔How many major types of explosions are there? - ✔✔Two
✔✔What does refraction do? - ✔✔Focuses the blast pressure
✔✔What type of explosion has a combustion reaction at slower than the speed of
sound: - ✔✔Deflagration
✔✔Which type of explosion occurs in a series with the secondary explosion being more
severe? - ✔✔Dust explosion
✔✔Indicator of fire direction on a wood wall stud: - ✔✔Beveling
✔✔An interruption of heat transfer that results in a discontinuous pattern on a surface is
known as: - ✔✔Heat shadowing
