CPR Fire, Soot & Odor Remediation 3

Question 1

Fuel oil soot resulting from a puffback event is particularly difficult to remediate because it:

Accepted Answer

Contains oily, sticky residues that smear during cleaning

Answer

Fuel oil soot is oily and sticky, causing it to smear across surfaces if improper cleaning techniques are used.

Question 2

Which direction should cleaning strokes go when dry-sponging soot from a painted wall to minimize smearing?

Accepted Answer

Single-pass strokes in one direction only, using a clean section each time

Answer

Single-direction strokes using a clean sponge section each time prevent redepositing soot that has already been lifted.

Question 3

After a fire, the HVAC system should be:

Accepted Answer

Inspected, cleaned, and sealed off during remediation to prevent cross-contamination

Answer

The HVAC system can spread soot and odors throughout the structure if operated during remediation, so it must be shut down and cleaned.

Question 4

Which statement about ozone treatment in fire remediation is TRUE?

Accepted Answer

Ozone is effective at treating odor but cannot remove visible soot residue

Answer

Ozone oxidizes odor-causing molecules but does not physically remove soot deposits, so surface cleaning is still required.

Question 5

What is the primary purpose of applying a shellac-based primer-sealer after fire remediation cleaning?

Accepted Answer

To encapsulate remaining odor-causing compounds that cannot be removed by cleaning

Answer

Shellac-based sealers encapsulate residual odor compounds in porous materials that cannot be fully cleaned, preventing off-gassing.

(CPR) Certified Priority Restoration Practice Test