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WRT Certification
| Question | Answer |
|---|---|
| When should mitigation begin? | As soon as possible |
| In what state should our goal be to make the effected environment? | Equal to or better than before the intrusion |
| What are the 3 criteria used to evaluate whether effected material should be saved or disposed of? | Degree of contamination Damage to the item Replacement vs restoration costs |
| What PPE should restorers have ready access to? | Gloves Goggles Respirator Rubber boots |
| PPE stands for what? | Personal Protective Equipment |
| Utilization of respiratory equipment must conform to who? | OSHA |
| OSHA stands for what? | Occupational Safety and Health Administration |
| ANSI stands for what? | American National Standards Institute |
| EPA stands for what? | Environmental Protective Agency |
| What form must be signed before any work is done? | Work Authorization Form |
| What are the technician's first 3 safety responsibilities upon arriving at a water loss | Identify safety hazards Communicate these hazards Eliminate these hazards |
| Federal regulations apply to the handling of what two materials? | Lead and Asbestos |
| What is it the goal to find when evaluating the path of water migration? | The edge |
| What is a category 1 Water loss? | When the water is sanitary |
| What is a category 2 Water loss? | When the water has chemical, biological, or physical contamination |
| What must be disposed of in a category 2 water loss? | The carpet underlay |
| What is a category 3 Water loss? | When the water is grossly unsanitary or carries pathogenic agents |
| What is the first priority at a category 3 water loss? | Worker and occupant health and safety |
| If there is any resistance to following the proper procedures what should you do? | Get a limitations form signed |
| If the customer refuses to follow proper procedures and will not sign a limitations form, what should you do? | Stop work immediately to prevent liability |
| What does IEP stand for? | Indoor Environmental Proffesional |
| What must be done upon finding preexisting damages? | Document and communicate them |
| What should be recommended upon finding delamination? | Recommend replacement |
| What percentage of relative humidity can cause secondary damages? | 60% |
| What 3 factors influence the rate of evaporation? | Airflow Humidity Temperature |
| After excess water has been removed, what determines the time to dry wet materials? | The rate of evaporation |
| What is evaporation? | When liquid changes into a vapor |
| What is Condensation? | When vapor changes into a liquid |
| What is Sublimation? | When a solid changes into a vapor (without becoming a liquid first) |
| What is Deposition? | When a vapor changes into a solid (without becoming a liquid first) |
| What is melting? | When a solid changes into a liquid |
| What is freezing? | When a liquid changes into a solid |
| What term is used to indicate the air's moisture content? | Relative humidity |
| When air temperature increases what can the air hold more of? | Water vapor |
| What is the weight of water vapor in the air referred to as? | GPP |
| What does GPP stand for? | Grains Per Pound of dry air |
| What is another term for the GPP? | Humidity ratio |
| What is the temperature when the Humidity ratio reaches 100%, called? | Dew point |
| What is vapor pressure? | The force exerted by a gas on the surrounding environment |
| What is the term used to describe the ability for water vapor to move through a material? | It's permeance |
| What are materials with a permeance rating of less than 1.0 called? | Vapor barrier |
| What are the 3 types of drying systems? | Open Closed Combination |
| What is an open drying system? | When you use outside air to dry |
| What is a closed drying system? | When you use dehumidification to dry |
| What is a combination drying system? | A mix of open and closed drying systems |
| What is the name of the standard for water restoration form | IICRC S500 |
| Category of water measures what? | How clean the water is |
| The class of water measures what? | How much material is effected |
| What percentage of absorption is class 1 | 1% to 5% |
| What percentage of absorption is class 2 | 5% to 40% |
| What percentage of absorption is class 3 | 40% + |
| What is class 4 | Deeply held or bound water |
| What do air movers promote | evaporation |
| When calculating air movers, each room starts with how many air movers? | 1 |
| How many square feet of flooring is covered by 1 air mover? | 50-70 |
| How many square feet of walls or ceilings is covered by 1 air mover? | 100-150 |
| How big does an offset/inset have to be to add an air mover? | 18 inches |
| How many air movers must be added for for an 18+ inches offset or inset? | 1 |
| Which way must you always round when calculating air movers? | Up |
| What does ACH stand for? | Air changes per hour |
| Where must you dispose of extracted water? | A sanitary sewer system |
| If you can not find a place to dispose of extracted water, where must it be brought? | A water treatment plant |
| How many gallons are in a cubic foot of water? | 7.48 |
| Where should you start drying? | At the source |
| Where should you never point an air mover? | Directly at a dehumidifier |
| What relative humidity percentage do we want to hit within 24 hours? | 40% |
| You can not begin drying a structure until it has been what? | Cleaned |
| What needs to be checked on all equipment before using? | The power cords |
| What percentage of amperage does the national electric code state that we use? | No more than 80% |
| At what angle should an air mover be placed by the wall? | 45 degrees |
| What do dehumidifiers do? | Reduce the moisture content in the air |
| If the rate of evaporation exceeds the rate of dehumidification, what occurs? | Secondary damage |
| Does insurance cover secondary damage? | No |
| What method do refrigerant dehumidifiers use to dry the air? | Condensation |
| At what degrees do refrigerant dehumidifiers work best? | 70-90 degrees |
| Refrigerant dehumidifiers are effective at lowering the humidity to what percentage? | 40% |
| Refrigerant dehumidifiers are effective at lowering the humidity to what GPP? | 55 |
| What method do desiccant dehumidifiers use to dry the air? | Chemical |
| What dehumidifier produces the lowest water vapor? | Desiccant dehumidifier |
| Air filtration devices are needed in all jobs with a high level of what in the air? | Particulates |
| What should always be done before using other drying equipment? | Extract as much water as possible |
| What is the primary goal for the water left behind after the extraction? | Containing the remaining water |
| Is the skin of the carpet padding a vapor barrier? | No |
| If carpet is getting reinstalled, what should you not do unless it is absolutely necessary? | Cut the carpet |
| If you absolutely have to cut carpet that is getting reinstalled, where should you cut it? | Along a pre-existing seem |
| What should we be abiding by when disposing extracted water? | Local laws and regulations |
| What is the minimum temperature we should have the thermostat set to? | 70 degrees |
| When should flushing the structure be considered? | When the structure has a 60% or higher relative humidity |
| How much strength does carpet lose when it is wet? | 80% to 85% |
| When we are trying to save carpet, what tools should be used to remove the carpet from the tack strip? | A knee kicker and an awl |
| What is the purpose of carpet padding skin? | To ease the carpet stretching in installation |
| After removing the carpet from the tack strips, what method of pulling up the carpet should be used? | Rolling |
| What wand is best for extracting hard flooring? | Squeegee wand |
| How does the technician test the extraction effectiveness? | Disengaging one corner and firmly squeezing the carpet underlay |
| What should always be done before using vacuum panels? | Extraction |
| How much water must there be to use a submersible pump? | A minimum of 2 inches of standing water |
| Does ServPro sterilize? | No |
| What containers must be labeled? | All of them |
| What should always be worn when mixing cleaners or chemicals? | Goggles |
| What form must be kept anywhere cleaners and chemicals are stored? | An SDS sheet |
| Wood moisture is measured in what? | Percentage |
| Everything except for wood is measured in what? | Points |
| Drying is not complete until you have met what? | The drying goal |
| What is a zone? | A space that shares air for drying purposes |
| What are the 3 levels of biocidal activity? | Sanitizer Disinfectant Sterilization |
| What must be followed every time a chemical or biocide is used? | The label instructions |
| What does SDS stand for? | Safety Data Sheet |
| How often should a job be monitored? | Daily/24 hours |
| What is the most basic moisture detection equipment? | Moisture sensor |
| What do thermal imaging cameras detect? | Surface temperature differences |
| Thermal imaging is valuable in establishing what? | A moisture map |
| What is the most effective tool for locating moisture? | A moisture meter |
| What does a thermohygrometer measure? | Air temperature and relative humidity |
| In evaluating progress with drying projects, what 3 key areas should emphasis be placed on? | Moisture in materials Air being used to dry effected materials Systems controlling humidity and temperature |
| Can hard wood, soft wood, and plywood be dried? | Yes |
| Should OSB, MDF, and particle board be dried? | No |
| Can cupping be reversed? | Yes |
| Can crowning be reversed? | No |
| What causes cupping and/or crowning of flooring? | Water getting between and underneath the flooring |
| Which engineered lumber is the most resistant to moisture? | Plywood |
| What type of underlayment is usually removed and replaced if wet or damaged? | Particle board |
| What is gypsum? | Dry wall |
| What material becomes a little stronger when it gets wet and then dried? | Drywall |
| At what percentage of saturation can dry rot occur? | 20% |
| What are the 3 states of water? | Solid Liquid Vapor |
| What percentage of amperage should we be using on any given circuit? | 80% |
| Where do you get a reading for the drying standard? | An unaffected area |
| How do you set your drying goal? | add 10% to the drying standard |
| At what percentage does a sub-floor have to be within a hardwood floor to be considered dry dry? | 2%-4% |
| What percentage of saturation can mold growth begin on a wood floor? | 16% |
| What is hydrostatic pressure? | Water penetrating from the outside |
| Airflow within a wall cavity increases what? | The rate of evaporation |
| What 3 things must be done if a ceiling is wet and sagging/damaged? | Drain Remove wet wallboard Discard effected materials |
| What 3 things must be determined on daily monitorings? | How wet items are Are wet items drying Are effected items dry |
| What must be checked for before removing any equipment? | If the effected area has reached the drying goal |
| How do you get the average moisture content? | Taking readings in several locations |
| What is a moisture map? | Drawings of effected rooms with corresponding moisture levels |
| What 3 things should moisture documentation include? | Record of moisture content Moisture map Record of drying conditions (drying report) |
| What does RMC stand for? | Record of Moisture Content |
| What does RDC stand for? | Record of Drying Conditions |
| Hard wood floors must be within what percentage of the drying standard? | 10% |
| What must be allowed between the finishing of the floor drying process and the refinishing of the floors? | Sufficient acclimation time |
| If mold is present, what must be done before setting any equipment? | Mold must be removed or contained |
| Why must mold be removed or contained before setting any equipment? | spores and hyphae can spread from contaminated areas to unaffected areas |
| At what percentage of saturation can surface fungi begin to grow? | 15% |
| At what percentage of saturation can wet rot occur? | 30% |
| When relative humidity rises above 70% what occurs? | rapid microbial growth |
Created by:
Player247