CPR CPR Odor Control & Deodorization

Question 1

Which deodorization method uses hydroxyl radicals generated by UV light to neutralize odor molecules in the air?

Accepted Answer

Hydroxyl generator

Answer

Hydroxyl generators produce hydroxyl radicals via UV light that react with and neutralize volatile odor compounds without the hazards of ozone.

Question 2

Why must ozone generators NOT be operated in occupied buildings during treatment?

Accepted Answer

Ozone at high concentrations is toxic to humans and animals

Answer

Ozone at concentrations required for deodorization is a respiratory irritant and toxic to humans and pets, mandating evacuation during treatment.

Question 3

Thermal fogging deodorizes by:

Accepted Answer

Heating a deodorant solvent into a fine fog that penetrates porous materials

Answer

Thermal fogging vaporizes a petroleum- or water-based deodorant into microscopic particles that penetrate porous surfaces where odors reside.

Question 4

What is the correct sequence for deodorizing a fire-damaged structure?

Accepted Answer

Remove debris → Clean surfaces → Deodorize → Seal if needed

Answer

Source removal and surface cleaning must precede deodorization so treatments target residual odors rather than masking ongoing contamination.

Question 5

Which material typically requires encapsulant sealer after cleaning to permanently address embedded smoke odors?

Accepted Answer

Structural wood framing with heavy charring

Answer

Heavily charred wood framing absorbs smoke compounds deep into the grain; an encapsulant sealer locks in residual odors that cleaning alone cannot remove.

(CPR) Certified Professional Restorer Practice Test

(CPR) Certified Professional Restorer Practice Test

CPR CPR Odor Control & Deodorization