Download Restorative Drying: Questions and Answers for WRT 2022 Exam and more Exams Water Resources Planning and Management in PDF only on Docsity!
WRT 2022 exam GRADED A+
The most critical course of action in restorative drying is to ______ _______ and begin ______ as soon as possible - ANSWER-Respond quickly
Drying
All restorers should follow the standard of care for the water restoration profession developed by the restoration industry entitled the IICRC _______ - ANSWER-S
To help protect technicians from the many hazards associated with contaminated water losses, restores, need to have ready access to several items. These items protect for all _____ _____ to the body - ANSWER-Potential Exposure
Respiratory protection regulations state that the employer must provide
________ - ANSWER-Medical evaluations
Fit testing
Training
Regulations require a ______ inspection to identify situation's posing danger to life or property - ANSWER-Hazard
The contract clearly states the agreement between the building owner and the restoration contractor. The form specifies who is responsible for payment and should be signed ______ work begins - ANSWER- Before
The technicians, first responsibility when arriving at a water damage site is to identify and communicate and eliminate _____ ______ if reasonably possible - ANSWER-Safety hazards
After safety concerns have been addressed, and the initial water source has been stopped the restorer must complete an evaluation of the waters migration through the structure. During this process, the restore inspects all ______ ______ areas - ANSWER-Potentially affected
The ultimate goal is to find the "edge" of water migration, which moves in a three-dimensional path throughout the structure. This is accomplished across carpeted surfaces using a _____ ______, and across most hard surfaces using a __________ (non-penetrative) moisture meter - ANSWER-Moisture sensor
Non-invasive
Water from a clean source, with no substantial risk of causing sickness or discomfort, is said to be _______ ____ water. - ANSWER-Category 1
Water that has a significant degree of chemical, biological, and or physical contamination, and a potential to cause sickness or discomfort is _______ _____ - ANSWER-Category 2
When water intrusion results from a grossly unsanitary source or carries ______ (disease causing) agents it is said to be category 3 - ANSWER-Pathogenic
Worker and occupant ______ and safety are the first priority on every sewage loss. Areas affected by category 3 water intrusion are marked and posted as potentially hazardous. - ANSWER-Health
When resistance is encountered and performing proper services in a category 3 water loss becomes a challenge, restorers ______ _____ immediately to prevent liability and address the conflict. - ANSWER- Stop work
Third-party experts are commonly referred to as indoor environmental professionals, or _____ - ANSWER-IEP
Losses where regulated or hazardous materials have contaminated the structure do not change the _____ of water - ANSWER-Category
Many building materials will absorb excess water vapor and suffer damage, especially when air is allowed to remain above ____% relative humidity - ANSWER-60%
Abide by local _____ and regulations when disposing extracted water. Waste water is best, dispose of into a sanitary sewer. - ANSWER-Laws
The primary goal of the initial extraction of the affected area is to contain further _____ of the water within the structure. - ANSWER-Migration
Whenever carpet must be disengage from the tactless strip, a _____ _____ and carpet awl must be used. - ANSWER-Knee kicker
The majority of cushion has a skin or mesh on the top side. The purpose of this skin is to ease _____ during installation; it is not a vapor barrier. - ANSWER-Stretching
If the carpet is to be reinstalled, technicians should avoid cutting carpet seams, unless it is absolutely ______ - ANSWER-Necessary
The most effective way to speed the drying process is to remove as much of the water in a liquid state as possible during the ______ phase (for example multiple extractions). Poor extraction will significantly slow the drying process. - ANSWER-Extraction
Every cubic foot of standing water present in a structure contains _____ gallons (28.3 liters) and each gallon (3.8 liters) of water weighs 8.34 pounds (3.8 kg. - ANSWER-7.48 gallons
There are three levels of biocidal activity, according to environmental protection agency (EPA) [provide name and description starting with weakest] - ANSWER-Sanitizer: reduces pathogens to safe levels
Disinfectant: destroys micro organisms, but not spores
Sterilizer: destroys microorganisms, including spores (eliminates all forms)
Whenever a chemical, antimicrobial or biocide is used restorers must follow the label _____ explicitly - ANSWER-Directions
Most antimicrobials require that the area of application be vacated by _____ and pets during application and for a period of time after application - ANSWER-People
Establishing a ____ ____ is the best way to set restorative drying goals. A dry standard is established by obtaining moisture reading using an _____ material - ANSWER-Dry standard
Unaffected
The numerical value for a moisture meter can be documented and used to monitor progress. For this reason, the amount of moisture absorbed by semi- porous structural materials is measured most accurately with a moisture _____, not a moisture sensor - ANSWER-Meter
Because of their non-invasive nature and quick, surveying capabilities non-invasive meters, are the most effective tools for locating abnormal moisture behind and beneath finishing materials, such as _____ _____ and resilient _____ floor coverings. - ANSWER-Ceramic tile
Vinyl
To evaluate the progress of structural drying projects restorers should measure:
Moisture in _____ being dried (moisture content readings)
_____ being used to dry affected materials (psychometric readings)
______ produced by mechanical systems (dehumidifiers) - ANSWER-Materials
Air
Humidity
A Thermo hygrometer is used to monitor any air that can influence the_____ and/or ______ _______ within a restorative drying environment - ANSWER-Temperature
Relative humidity
After excess water has been extracted the time needed to dry wet materials is determined by the _____
- ANSWER-Rate of evaporation
a) 60° b) 70° c) 80° - ANSWER-c)80°
If a material is not drying well, what would be the most effective method of increasing evaporation?
a) use air filtration
b) warm the material
c) add more airflow - ANSWER-b) warm the material
One of the most effective methods of drain, wet wood under hard surfaces is
a) heated air flow
b) demolition of the wood
c) negative air pressure - ANSWER-a) heated air flow
______ _____ is defined as the amount of moisture contained in an air sample compared to the maximum amount the air could hold at the temperature. - ANSWER-Relative humidity
In the restorative drying industry, the weight measurement used to measure water vapor in the air is grains per pound of air abbreviated as GPP. This is called ____ ____ - ANSWER-Specific humidity or humidity ratio (same thing)
_____ is the temperature at which air becomes saturated with moisture vapor, or can hold no more water vapor - ANSWER-Dew point
When air is cooled its capacity for water vapor is reduced. Eventually if temperature is cooled enough, the relative humidity will reach ____ or saturation. When this occurs, the air has reached its ____ point temperature - ANSWER-100 % RH
Dew
if surfaces are ______ then the dew point of the surrounding air water will condense on those surfaces and possibly cause secondary damage. If surfaces are _____ than the dewpoint of the surrounding air evaporation can occur - ANSWER-Cooler
Warmer
________ _______ is the force exerted by ( vapor molecules) on the surrounding environment - ANSWER-Vapor pressure
Vapor pressure, dew point, and humidity ratio(GPP) are _____ _____ to each other. When one increases the other two ______. When one decreases the other two ______ - ANSWER-Directly related
Increase
Decrease
Water vapor pressure is the force that drives higher concentration of humidity from one space to another, in an attempt to seek ______ with lower concentrations of water vapor - ANSWER-Equilibrium
The ability for water vapor to diffuse through a solid material is expressed as the materials ______ - ANSWER-Permanence
Drying systems [Provide name, and brief description]
_______ - ANSWER-Open drying: intentionally using outdoor air
Combination drying
Closed drying
If open drying is determined, appropriate the following options (while keeping building security in mind) are available to the restorer
_______ - ANSWER-Ventilation fans
Open windows
Pressure differential's/air exchange
Restorers must maintain their safety certified equipment properly. This includes replacing _____ that are damaged, replacing, damaged, inlet, and outlet ______, and checking for ______ electrical plugs - ANSWER-Cords
Screens
Missing
Install ___ air mover for each _____ area before you calculate additional air movers for the square feet of services in for room offsets - ANSWER-
Affected
Dehumidification reduces the _____ content of the air - ANSWER-Moisture
A balanced drying system and is achieved when the rate of the dehumidification is greater than or equal to the rate of ______ - ANSWER-Evaporation
If the rate of evaporation is allowed to exceed the rate of dehumidification ______ _______ can occur - ANSWER-Secondary damage
Refrigerant, dehumidifiers, remove water from the air through the process of ______. Because of this fact, they are more efficient in higher humidity conditions. Refrigerant dehumidifiers work best between. ___ and ___°F - ANSWER-Condensation
70°
90°
Air filtration devices (AFDs) are needed in water restoration work whenever high levels of ______ are being added to the air - ANSWER-Particulates
LGRs produce lower _____ ______ than conventional refrigerants, and continue to remove significant water vapor down to _____ GPP - ANSWER-Vapor pressure
34
Because desiccant dehumidifiers do not use condensation to remove water. They are not limited by low dew point temperatures; therefore, they produce the lowest _____ ______ of any dehumidifier - ANSWER-Vapor pressure
If a structure had affected air at 85° at 65% RH the most efficient type of dehumidifier to use would be
Refrigerant /desiccant - ANSWER-Refrigerant
If a structure had affected air at 75° at 25% RH the most efficient type of dehumidifier to use would be
Refrigerant /desiccant - ANSWER-Desiccant
If a structure cannot be warm today temperature where LGRs would be effective the most efficient type of dehumidifier to use would be
Refrigerant/desiccant - ANSWER-Desiccant
To determine how many dehumidifiers to place
a) determine the _____ feet (meters) affected or volume of air to be dehumidified by multiplying the areas length x width x hight
b) note the dehumidifier rating (Association of home appliance manufacturers or AHAM rating) of the refrigerant/LGR dehumidifier, being used or the process out CFM of the desiccant dehumidifier being used. Dehumidifiers AHAM ratings are measured in pints of water removed at ___°F , ____% RH for _____ hours - ANSWER-a) cubic
b) 80°F
60%
24 hours
______ represents the" was-wood" material with the least engineering, and that's the most natural fiber bonding. It is _____ to swelling in D lamination due to its wood, veneer assemblies which are glued under extreme pressure - ANSWER-Plywood
Resistant
Wet particleboard would normally be ____ and replaced - ANSWER-Removed
