CPR Fire, Smoke & Water Damage Remediation 3 — Questions and Answers
Question 1: What does 'psychrometric analysis' help a restorer determine during water damage drying?
- The load-bearing capacity of water-saturated structural components
- The relationship between temperature, humidity, and dew point to optimize drying (Correct answer)
- The microbial contamination levels present in affected materials
- The appropriate category classification of the water intrusion source
Correct answer: The relationship between temperature, humidity, and dew point to optimize drying
Psychrometric analysis evaluates air temperature, relative humidity, and dew point to calculate vapor pressure differentials and optimize drying conditions.
Question 2: What is 'secondary damage' in a fire and smoke loss scenario?
- Structural damage caused by the fire department's suppression efforts
- Damage that occurs after the fire event due to soot acids, moisture, or improper cleaning (Correct answer)
- Damage to neighboring properties not directly touched by fire
- Smoke migration to areas beyond the fire's origin room
Correct answer: Damage that occurs after the fire event due to soot acids, moisture, or improper cleaning
Secondary damage refers to ongoing deterioration after the fire event itself, including corrosion from soot acids, mold growth, and improper cleaning damage.
Question 3: Which OSHA standard governs respiratory protection requirements for restorers working in smoke-damaged environments?
- 29 CFR 1910.132
- 29 CFR 1910.134 (Correct answer)
- 29 CFR 1926.62
- 29 CFR 1910.1025
Correct answer: 29 CFR 1910.134
OSHA 29 CFR 1910.134 specifically governs respiratory protection programs including fit testing and respirator selection requirements.
Question 4: In water damage drying, the 'standard drying goal' per IICRC S500 is to return materials to:
- 0% moisture content across all materials
- Pre-loss moisture content levels of unaffected materials in the same structure (Correct answer)
- Moisture levels below 15% for all wood-based materials
- A relative humidity of 50% or less in all affected rooms
Correct answer: Pre-loss moisture content levels of unaffected materials in the same structure
The standard drying goal is to return affected materials to the moisture content of unaffected materials in the same building, not a universal number.
Question 5: When cleaning protein smoke residue (e.g., from a kitchen fire), which cleaning approach is most effective?
- Dry sponge cleaning to prevent smearing the light residue
- Solvent-based cleaners and mechanical agitation to break down the oily film (Correct answer)
- Abrasive blasting to strip the baked-on layer quickly
- Ozone treatment alone without surface cleaning
Correct answer: Solvent-based cleaners and mechanical agitation to break down the oily film
Protein residue is nearly invisible but creates a strong odor; solvent-based cleaners with agitation are needed to dissolve the oily, baked-on film.
Question 6: What is the minimum recommended air changes per hour (ACH) when using negative air machines during fire remediation containment?
- 2 ACH
- 4 ACH (Correct answer)
- 6 ACH
- 10 ACH
Correct answer: 4 ACH
IICRC guidelines recommend a minimum of 4 air changes per hour through negative air machines to maintain effective containment and particulate control.
Question 7: Which hazardous material commonly found in pre-1980 fire-damaged structures requires a certified abatement contractor before restoration work begins?
- Lead-based paint only
- Asbestos-containing materials (Correct answer)
- Polychlorinated biphenyls (PCBs) only
- Formaldehyde-based adhesives
Correct answer: Asbestos-containing materials
Asbestos-containing materials disturbed during fire damage or remediation require certified abatement before restoration work can safely proceed.
CPR Fire, Smoke & Water Damage Remediation 3
What does 'psychrometric analysis' help a restorer determine during water damage drying?