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IICRC WRT-ASD Combined Exam – Key
Concepts, Drying Systems & Safety
Protocols.
5 Things mold needs to grow - <<<<Answers✅✅
- Elevated material moisture content
- Relative humidity greater than 60%
- Ideal temperature range
- Stagnant air
- Time
Should air movers be used in areas where mold has already begun growing? - <<<<Answers✅✅Never
When mold is found: - <<<<Answers✅✅
Put on PPE
Install containment
Create negative air pressure
remediate the mold before drying (if practical and qualified technician.
Water Contamination Category 1 - <<<<Answers✅✅Water originates from a sanitary water source and does not pose substantial risk from dermal, ingestion, or inhalation exposure. Ex- broken water supply lines, tub or sink overflows with no contaminants, appliance malfunctions involving supply lines, melting ice or snow, falling rainwater, broken toilet tanks and toilet bowls that do not contain contaminants or additives.
Category 1 can deteriorate to Category 2 or 3: - <<<<Answers✅✅
1.flows into a contaminated building
2.Microorganisms become wet from water intrusion depending on the length of time they remain wet and the temperature
3.Odors can indicate Cat 1 water has deteriorated.
Water Contamination Category 2 - <<<<Answers✅✅Contains significant contamination and has the potential to cause discomfort or sickness if contacted or consumed by humans. Can contain potentially unsafe levels of microorganisms or nutrients for microorganisms as well as other organic or inorganic matter (chemical or biological).
Ex-Discharge from dishwashers or washing machines, overflows from washing machines, overflows from toilet bowls on the room side of the trap with some urine but no feces, seepage due to hydrostatic pressure, broken aquariums and punctured water beds.
Category 2 water can deteriorate to Cat 3: - <<<<Answers✅✅Once microorganisms become wet from the water intrusion, depending upon the length of time that they remain wet and the temperature, they can begin to grow in numbers and can change the category of the water.
Water Contamination Category 3 - <<<<Answers✅✅Grossly contaminated and can contain pathogenic, toxigenic or other harmful agents and can cause significant adverse reactions to humans if contacted or consumed.
Ex-sewage, wasteline backflows that originate from beyond any trap regardless of visible content or color, all forms of flooding from sea water, rising water from rivers or streams, and other contaminated water entering or affecting the indoor environment, such as wind-driven rain from hurricanes, tropical storms or other weather related events. Cat 3 water can carry trace levels of regulated or hazardous materials.
Regulated hazardous materials and mold - <<<<Answers✅✅If a regulated or hazardous material is part of water damage restoration project, then a specialized expert may be necessary to assist in damage assessment. Restorers shall comply with applicable federal, state, provincial and local laws and regulations.
A water damage has some mold growing on some of the walls- Category 3 or condition 3 -
<<<<Answers✅✅Condition 3- Not enough info to determine category
Water that appears clear enters a building from outside off the patio that isn't sloped correctly. It's not part of widespread flooding. Based on just that information, most likely
what category is the water? - <<<<Answers✅✅Category 2- (Cat 3 involves widespread flooding that brings in contamination).
Level of Cleanliness - <<<<Answers✅✅1. Sterilize
- Disinfect
- Sanitize
Sterilize - <<<<Answers✅✅100% effective. To destroy or eliminate all forms of microbial life including fungi, viruses and all forms of bacteria and their spores.
Disinfect - <<<<Answers✅✅Kill at least 99.9% of disease producing micro organisms but not necessarily their spores.
Sanitize - <<<<Answers✅✅Lowest level of effectiveness. Reduce the number of pathogenic microorganisms to a safe level as determined by public health codes.
Shall - <<<<Answers✅✅The practice or procedure is mandatory due to natural law or regulatory requirement, including occupational public health and other relevant laws, rules or regulations and is therefore a component of the accepted "standard of care" to be followed.
Should - <<<<Answers✅✅The practice or procedure is a component of the accepted "standard of care" to be followed, while not mandatory by regulatory requirements.
Recommend - <<<<Answers✅✅The practice or procedure is advised or suggested, but it is not a component of the accepted "standard of care" to be followed.
May - <<<<Answers✅✅Signifies permission expressed by the document, it means that a referenced practice or procedure is permissible within the limits of this document, but is not a component of the accepted "standard of care" to be followed.
Can - <<<<Answers✅✅Signifies an ability or possibility open to user of the document, and it means that a reference to practice or procedure is possible or capable of application, but is not a component of the accepted "standard of care" to be followed.
What is our first concern? - <<<<Answers✅✅Health and safety of workers and occupants.
Why does rapid response matter? - <<<<Answers✅✅It limits damage and reduces drying time.
What is mitigation in water damage restoration? - <<<<Answers✅✅Mitigation is limiting the overall cost and scope of the repairs necessary to return the building to service.
Safety issue: Water through electrical system or appliances - <<<<Answers✅✅Turn off power to that area and contact a qualified person to repair.
Safety Issue: Slip and fall hazard - <<<<Answers✅✅Extract standing water, put out signage, inform occupants of the hazard.
Safety Issue: Sagging drywall ceilings that are saturated: -
<<<<Answers✅✅Immediately drain the water out of the ceiling, remove the ceiling materials and dispose of them properly.
Safety Issue: Mold growth discovered: - <<<<Answers✅✅Put on appropriate PPE, inform occupants, shut off HVAC in that area, contain the mold, remediate if possible.
Principles of Drying: - <<<<Answers✅✅1. Remove the excess.
- Dehumidification
- Evaporation
- Temperature control
While you are doing this document everything through emails, pictures, forms, notes and other correspondence.
Extractors: - <<<<Answers✅✅Portable, flood pumper or truck mounted units are used to extract water.
IR Camera - <<<<Answers✅✅These show surface temperatures and since surfaces cool when water is evaporating from them, cool spots can indicate where to look for moisture.
Knee Kicker and Awl - <<<<Answers✅✅A must for disengaging the carpet from tack strip.
Extension Cords and GFCI - <<<<Answers✅✅Delivering electricity to your equipment requires safe cables in good working condition.
Sprayers and Cleaning Tools - <<<<Answers✅✅For applying anti microbial and biocide and cleaning up the work area.
Consumables - <<<<Answers✅✅Tape, sheet plastic, styrofoam blocks, plastic furniture tabs, antimicrobial and biocides.
Hierarchy of Controls - <<<<Answers✅✅1. PPE
- Administrative Controls
- Engineering Controls
- Substitution
- Elimination
PPE - <<<<Answers✅✅Personal Protective Equipment
Administrative Controls - <<<<Answers✅✅Change the way people work.
Engineering Controls - <<<<Answers✅✅Isolate people from the hazard.
Substitution - <<<<Answers✅✅Replace the hazard.
Elimination - <<<<Answers✅✅Physically remove the hazard.
Electrical drying equipment ___ have a ___ plug. - <<<<Answers✅✅shall, grounded
Do not disturb ___, ___ and ___ unless you have the proper licensure. -
<<<<Answers✅✅lead, asbestos and other hazardous materials
Extension cords shall be - <<<<Answers✅✅grounded, in good condition with no damage to the cover of the cable. Used according to manufacturer directions.
Air movers and other equipment shall be equipped with - <<<<Answers✅✅a grounded plug. GFCI devices should be used and should be at the end closest to the power source.
PPE is considered the ___ effective means of protection - <<<<Answers✅✅least
Three routes of exposure - <<<<Answers✅✅Dermal, respiratory and mucous membranes.
Respiratory Protection Plan shall include three parts - <<<<Answers✅✅1. Medical Evaluation
- Fit Testing
- Proper Training
APF - <<<<Answers✅✅Assigned protection factor
APF Rates for N-95, Half Face, Full Face, PAPR, Loose Fitting PAPR - <<<<Answers✅✅N- 95 - 10
Half Face - 10
Full Face - 50
PAPR - 1000
Loose Fitting PAPR - 20-
