Deloatch Training (IICRC WRT) Study Deck Flashcards
Prepare for the IICRC Water Restoration Technician (WRT) Certification Exam. For the full class, visit https://www.deloatchtraining.com/ With special thanks to Bruce and Joanna Deloatch (127 cards)
1
Q
Third party experts are commonly referred to as Indoor Environmental
Professionals, or ________.
Chapter 3
A
IEP’s
2
Q
Restorers must maintain their safety certified equipment properly. This includes
replacing ___________ that are damaged, replacing damaged inlet and outlet
__________, and checking for ______________ electrical plugs.
Chapter 8
A
cords
screens
grounded
3
Q
If a structure cannot be warmed to a temperature where LGRs would be effective,
the most efficient type of dehumidifier to use would be: refrigerant / desiccant
Chapter 8
A
Dessicant
4
Q
Whenever carpet must be disengaged from the tackless strip, a ___________
_________ and carpet awl must be used.
Chapter 4
A
- Knee Kicker
5
Q
Class 1 water intrusions involve the ________ amount of water absorption, with
less than ____% of the area surfaces being wet porous materials.
Chapter 8
A
least
5%
6
Q
When carpet delamination (the loss of integrity in the adhesives used to laminate
the _____________________ and ________________________ backings) has occurred,
further damage is very likely. For this reason, when extensive carpet delamination
is discovered, technicians must call it to the attention of all materially interested
parties, document the condition and suggest __________________.
Chapter 3
A
- Primary
- Secondary
- Replacement
7
Q
Which of these surface temperatures would promote the most rapid evaporation?
a. 60 degrees
b. 70 degrees
c. 80 degrees
Chapter 7
A
C. 80 Degrees
8
Q
When water intrusion results from a grossly unsanitary source or carries
___________________ (disease causing) agents, it is said to be Category 3.
Chapter 3
A
Pathogenic
9
Q
Remove the vinyl (flooring) and discard it if the _____________________ is
saturated and/or damaged; vinyl is a vapor barrier and the time required to dry underlayment will be dramatically reduced if the vinyl is removed.
Chapter 9
A
Sub Floor
10
Q
Wet materials present in a Class 4 water intrusion require a ________ time to dry.
Water has saturated deeply into the materials and is held or trapped as bound
water. Low evaporation materials have ______________ absorption of water.
Chapter 8
A
longer
Significant
11
Q
If the rate of evaporation is allowed to exceed the rate of dehumidification,
____________________ ________________ can occur.
Chapter 8
A
Secondary Damage
12
Q
__________________occurs when liquid changes to a vapor. Occurs as energy is
increased.
Chapter 7
A
Evaporation
13
Q
Describe a Closed Drying System
Chapter 7
A
Using mechanical dehumidification only
14
Q
Use your Psychrometric Chart to complete the following calculation:
80°F at 60% RH = _____________________ GPP
Chapter 7
A
92
15
Q
When using low grain refrigerant (LGR) dehumidifiers that remove 72 pints at
AHAM test conditions, the number installed initially on a Class 2 water loss with 18,000 cubic ft. is:
Refrigerant Formula (always divide)
1. Cubic Footage ÷ Chart Factor = Total PPD (Pints Per Day) Removal Recommendation
2. Total PPD Removal Recommendation ÷ Dehumidifier AHAM Rating = # of Dehumidifiers
Refrigerant Formula (always divide)
Chapter 8
A
5 LGR Dehumidifiers
18000/50=360/72=5
16
Q
Restorers will know the drying job is dry and done when moisture meters verify that the structure has reached the ___________ _________.
Chapter 10
A
Drying Goals
17
Q
The ultimate goal is to find the “edge” of water migration, which moves in a threedimensional path throughout the structure. This is accomplished across carpeted
surfaces using a ______________ _______________, and across most hard surfaces
using a ____________________________ (non-penetrating) moisture meter.
Chapter 3
A
- Moisture Sensor
- Non Invaisive
18
Q
- Evaporation will increase when
Chapter 7
A
- Wet materials are made warmer
- Drier air is used
- Air is moved rapidy across the wet surface
19
Q
____________________ ______________________ is defined as the amount of
moisture contained in an air sample, as compared to the maximum amount the air
could hold at that temperature.
Chapter 7
A
Relative Humidity
20
Q
Losses where regulated or hazardous materials have contaminated the structure
do not change the _______________________ of water.
Chapter 3
A
Category
21
Q
Hygroscopic materials gain and lose moisture continually in an effort to
___________________ with the water content in the surrounding air mass. The
more hygroscopic the material, the faster it will collect water vapor, and the easier
it will suffer ________________________ damage.
Chapter 3
A
- Equalize
- Secondary
22
Q
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).
Chapter 4
A
7.48
23
Q
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.
Chapter 3
A
Before
24
Q
Dehumidification reduces the _______________________ content of the air.
Chapter 8
A
moisture
25
What does a Sterilizer do?
## Footnote
Chapter 5
Kills all organisms and spores
26
What does a Disinfectant do?
## Footnote
Chapter 5
Lowers Organisms to safe Level
27
Most antimicrobials require that the area of application be vacated by ___________
and pets during application and for a period of time after application.
## Footnote
Chapter 5
Occupants
28
___________________ is the temperature at which air becomes saturated with
moisture and can hold no more water vapor.
## Footnote
Chapter 7
Dew Point
29
If a structure had affected air at 85 F at 65% RH, the most efficient type of
dehumidifier to use would be a (choose one): refrigerant / desiccant
## Footnote
Chapter 8
Refrigerant
30
Airflow in the wall cavity increases the rate of ____________________ and allows
the wall to dry from both inside and out
## Footnote
Chapter 9
Evaporation
31
The numerical value from a moisture meter can be documented and used to
monitor progress. For this reason, the amount of moisture absorbed by semiporous structural materials is measured most accurately with a moisture
___________, not a moisture sensor.
## Footnote
Chapter 6
Meter
32
During the drying process, all of the gypsum’s original strength is restored. In fact, the dried gypsum will normally be slightly _________________ than before wetting.
## Footnote
Chapter 9
stronger
33
The ability for water vapor to diffuse through a solid material is expressed as the material’s __________________.
## Footnote
Chapter 7
Permeance
34
Federal regulations apply to handling or disturbing of _________ based paint and
asbestos.
## Footnote
Chapter 3
Lead
35
Water vapor pressure is the force that drives higher concentrations of humidity from one space to another in an attempt to seek _________________ with lower concentrations of water vapor.
## Footnote
Chapter 7
Equalibrium
36
What is the name of this drying system?
* Outside Humidity is Lower
* Outside Temperature is NOT above 70 Degrees Fahrenheit
## Footnote
Chapter 7
Combo
37
If the carpet is to be re-installed, technicians should avoid cutting carpet seams
unless it is absolutely___________________.
## Footnote
Chapter 4
Necesary
38
_________________ represents the “was-wood” material with the least engineering, and thus the most natural fiber bonding. It is ________________ to swelling and delamination due to its wood veneer assemblies which are glued under extreme pressure.
## Footnote
Chapter 9
1. Plywood
2. Resistant
39
Cupping will generally be the first indication of abnormal moisture levels in
hardwood flooring as the ________________ and sides of the board absorb moisture
## Footnote
Chapter 9
Bottom
40
Establishing a _________ __________ is the best way to set restorative drying
goals.
## Footnote
Chapter 6
Dry Standard
41
. __________________occurs when vapor changes to a liquid. Occurs as energy is
removed.
## Footnote
Chapter 7
Condensation
42
As with any contaminant, mold should be removed or contained before any air movers are placed in the structure. Blowing air can spread mold spores from the _____________________ area to the ________________ rooms.
## Footnote
Chapter 10
1. Affected
2. Unaffected
43
To evaluate the progress of structural drying projects, restorers should measure:
* Moisture in ____________ being dried (moisture content readings)
* _____ being used to dry affected materials (psychrometric readings)
* _____ produced by mechanical systems (dehumidifiers)
## Footnote
Chapter 6
1. Materials
2. Air
3. Air
44
Which drying system is best?
Outside
95 Degrees / 45% RH
Affected Area
80 Degrees / 50% RH
## Footnote
Chapter 7
Closed
Outside 92 GPP, Inside 76 GPP, More Humidity Outside
45
The best way to prevent odors and retard microbial growth in a wet structure is to ensure that all materials are dried ____________ and ____________________.
## Footnote
Chapter 10
1. Thoroughly
2. Rapidly
46
Install ____ air mover for each ___________ area before you calculate additional air
movers for the square feet of surfaces and for room offsets.
## Footnote
Chapter 8
1
affected
47
Because of their non-invasive nature and quick surveying capabilities, noninvasive meters are the most effective tools for locating abnormal moisture behind
and beneath finishing materials such as ___________ _______________ and resilient
___________ floor coverings.
## Footnote
Chapter 6
1. Ceramic Tile
2. Vinyl
48
Partial floating of carpet can be a way to achieve drying of all surfaces
simultaneously and allows _____________ dry air to have more contact with wet
flooring.
## Footnote
Chapter 9
Warm
49
Wet particle board would normally be ________________________ and replaced.
## Footnote
Chapter 9
Removed
50
Plastic Laminate Flooring is made of MDF and has a resin saturated appearance layer. Normally _________________ in water restoration due to its construction and installation components.
## Footnote
Chapter 9
removed
51
When ceilings are affected, drying procedures are similar to wall drying. If theceiling is sagging or otherwise damaged, wet drywall is drained, ________________ and _________________. Removal should be done _______ drying procedures begin or continue.
## Footnote
Chapter 9
1. Removed
2. Dicarded
3. Before
52
When the presence of mold is suspected, it is important to communicate with all parties and use appropriate ____________________________ measures.
## Footnote
Chapter 10
Protective
53
Dry rot (wood rot) can occur when wood is visibly dry yet wetter than
___________% moisture content.
## Footnote
Chapter 10
20%
54
Describe and Open Drying System
## Footnote
Chapter 7
Intentionally use outdoor air to lower indoor humidity
55
Pre-existing conditions should be identified, documented and communicated to all
________________ ________________________ parties during the initial inspection.
## Footnote
Chapter 3
Materially Interested
56
If surfaces are ________________________ than the dew point of the surrounding
air, water will condense on those surfaces and possibly cause secondary damage.
## Footnote
Chapter 7
Cooler
57
A dry standard is established by obtaining a moisture reading using
an _____________________ material.
## Footnote
Chapter 6
Unaffected
58
Vapor pressure, dew point and humidity ratio (GPP) are ___________ ___________
to each other. When one increases, the other two _____________. When one
decreases, the other two _____________.
## Footnote
Chapter 7
1. Directly Related
2. Decrease
3. Increase
59
When using desiccant dehumidification in a Class 4 water loss in a 2,000 square ft. structure with a 9-foot ceiling height, the initial CFM required is:
Desiccant Formula (divide by 60 for base CFM. Then multiply by ACH)
1. Cubic Footage × Chart Factor (ACH) ÷ 60 = Total CFM Recommendation
2. Total CFM Recommendation ÷ Dehumidifier CFM Rating = # of Dehumidifiers
## Footnote
Chapter 8
900 CFM
2000*9=18000*3=54000/60=900 CFM
60
Describe a Combo Drying System
## Footnote
Chapter 7
Unsing some outdoor air combined with mechanical dehumidification
61
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
## Footnote
Chapter 4
Carpet Stretching
62
When using conventional refrigerant dehumidifiers that remove 125 pints at
AHAM test conditions, the number installed initially on a Class 1 water loss with 25,000 cubic ft. is:
Refrigerant Formula (always divide)
1. Cubic Footage ÷ Chart Factor = Total PPD (Pints Per Day) Removal Recommendation
2. Total PPD Removal Recommendation ÷ Dehumidifier AHAM Rating = # of Dehumidifiers
## Footnote
Chapter 8
2 Conventional Dehumidifiers
25000/100=250/125=2
63
How many gallons of water are present in a basement that measures 30' × 25'
where water is standing at a depth of 6' 9"?
| (L * W) = SqFt * (H) = CuFt * 7.48 = Gallons
## Footnote
Chapter 4
37867.5 Gallons
64
Various cleaning and decontamination procedures must be used on Category 3
water losses, including the removal of all ________________ _________________ materials affected by the water intrusion.
## Footnote
Chapter 3
Highly Porous
65
If surfaces are ________________________ than the dew point of the surrounding air, evaporation can occur
## Footnote
Chapter 7
Warmer
66
Cupping in hardwood is not _____________________ damage, and should be dried in most cases.
## Footnote
Chapter 9
Permanent
67
If open drying is determined appropriate, the following options (while keeping building security in mind) are available to the restorer:
## Footnote
Chapter 7
* Open Windows
* Using Ventilation Fans in Structure
* Use of air movers to exchange air
* Using Heat/Air Exchanger
68
If the surface temperature of the material is higher than the ___________ point
temperature of the surrounding air, evaporation may occur.
## Footnote
Chapter 7
Dew
69
In the restorative drying industry the weight measurement used to measure water
vapor in air is grains per pound of air, abbreviated as GPP. This is called
_______________ _______________.
## Footnote
Chapter 7
Humidity Ratio
70
SignificantClass 2 water intrusions involve a ______________ amount of water absorption,
with more than ___% but less than ____% of area surfaces being wet porous
materials.
## Footnote
Chapter 8
Significant
5%
40%
71
Cleaning procedures must be employed before the drying of a Category 2 water
loss can continue. At a minimum, affected ________________ must be removed
and disposed of, and carpet must be thoroughly cleaned using a hot water
extraction method.
## Footnote
Chapter 3
Carpet Underlayment
72
_____________ _____________ is the force exerted by a gas (vapor molecules) on the surrounding environment.
## Footnote
Chapter 7
Vapor Pressure
73
Restorers must use a third party (IEP) in situations that involve severe public
health issues, _________ _________ occupants living or working in the structure,
or extensive _________________________ contamination that can affect worker or
occupant health.
## Footnote
Chapter 10
1. High Risk
2. Microbial
74
Respiratory protection regulations state that the employer must provide:
## Footnote
Chapter 2
Medical Examinations
Fit Testing
Training
75
When using conventional refrigerant dehumidifiers in a “Class 2” water loss
containing 15,000 cubic ft., the initial AHAM-rated capacity required is:
Refrigerant Formula (always divide)
1. Cubic Footage ÷ Chart Factor = Total PPD (Pints Per Day) Removal Recommendation
2. Total PPD Removal Recommendation ÷ Dehumidifier AHAM Rating = # of Dehumidifiers
## Footnote
Chapter 8
375 PPD
(15000/40=375)
76
After safety concerns have been addressed and the initial water source has been
stopped, the restorer must complete an evaluation of the water’s migration
through the structure. During this process, the restorer inspects all
_________________ ____________________ areas.
## Footnote
Chapter 3
Potentially Affected
77
As moisture evaporates from a wet material, the surface of the material becomes
___________________ because energy is released from the material.
## Footnote
Chapter 7
Cooler
78
When water intrusion results in water running through wall cavities, inspection
access holes are used to ensure that blown-in insulation has not compacted and
lost its __________________. Wet, compressed insulation should be ____________.
## Footnote
Chapter 3
1. R-Value
2. Removed
79
To help protect technicians from the many hazards associated with contaminated
water losses, restorers need to have ready access to several items. These items
protect for all ____________________ _________________ to the body.
## Footnote
Chapter 2
Potential Exposures
80
There are three levels of biocidal activity, according to the Environmental
Protection Agency (EPA) [Name the three types]
## Footnote
Chapter 5
1. Disinfectants
2. Sanitizers
3. Sterilizers
81
To determine how many dehumidifiers to place
1. Determine the _____________ feet (meters) affected or volume of air to be 1. dehumidified by multiplying the area’s length × width × height.
2. 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.
## Footnote
Chapter 8
cubic
80
60
24
82
Water that has a significant degree of chemical, biological and/or physical
contamination and a potential to cause sickness or discomfort is
__________________ ____.
## Footnote
Chapter 3
Category 2
83
What is the name of this drying system?
* Outside Humidity is Lower
* Outside Temperature is above 70 Degrees Fahrenheit
* Security, Weather and Customer Preference Agreeable
## Footnote
Chapter 7
Open
84
In structures where the surface of the wall is covered with a non-________________ surface as a vapor barrier, it may be necessary to remove base molding, drill holes and introduce air movement.
## Footnote
Chapter 9
Permeable
85
The most critical course of action in restorative drying is to ___________________
_______________ and begin __________________ as soon as possible.
## Footnote
Chapter 1
1. Respond Quickly
2. Mitigation
86
LGRs produce lower ______ ____________ than conventional refrigerants and continue to remove significant water vapor down to ______ GPP.
## Footnote
Chapter 8
* vapor Pressure or Humidity Ratio or Dew Point Temp
* 34
87
Water from a clean source with no substantial risk of causing sickness or
discomfort is said to be _____________________ ____ water.
## Footnote
Chapter 3
Category 1
88
Which of the two conditions above has the lowest vapor pressure?
a. 80°F at 60% RH = 92 GPP, .615 Vapor Pressure
b. 53°F at 80% RH = 48 GPP, .315 Vapor Pressure
## Footnote
Chapter 7
B. .315
89
Use your Psychrometric Chart to complete the following calculation:
53°F at 80% RH = _____________________ GPP
## Footnote
Chapter 7
48
90
29. Which of these surface temperatures would have the fastest rate of evaporation?
a. 10° below dew point
b. 20° above dew point
c. 30° above dew point
## Footnote
Chapter 7
C. 30° above dew point
91
What is the temperature in degrees Fahrenheit if the humidity ratio is
70 GPP, and the relative humidity is 60%?
## Footnote
Chapter 7
72 Degrees
92
Inspections are more consistent when the overall goals are kept in mind:
a. Determine how wet items are:
* Monitor ____________ in most circumstances.
* Use the same ____________ in the same locations each day.
b. Determine if wet items are ________________.
c. Determine if ________ items are dry (done).
## Footnote
Chapter 10
1. Daily
2. Meter
3. Drying
4. Affected
93
Whenever a chemical antimicrobial or biocide is used, restorers must follow the
label ________________ explicitly
## Footnote
Chapter 5
Directions
94
Which drying system is best?
Outside
40 Degrees / 70% RH
Affected Area
75 Degrees / 40% RH
## Footnote
Chapter 7
Closed/Combo
Outside 25 GPP, Inside 51GPP, Lower than 70 Degrees. Could Burp the space to lower humidity
95
There are a number of causes for carpet delamination — many of them related to
___________________________ restoration activities.
## Footnote
Chapter 3
Improper
96
The wood is considered dry when:
a. Solid hardwood is within ____ percentage points of normal Equilibrium Moisture Content (Dry Standard).
b. Subsurfaces below hardwood are dried to within _____-____ percentage points of the hardwood.
c. After wood flooring has been dried to acceptable moisture content, appropriate ____________ time should be allowed before refinishing.
## Footnote
Chapter 10
1. 2-4
2. 2-4
3. acclimation
97
Class 3 water intrusions involve the ____________ amount of water absorption,
with more than ____% of area surfaces being wet porous materials.
## Footnote
Chapter 8
Greatest
40%
98
All restorers should follow the standard of care for the water restoration profession
developed by the restoration industry entitled the IICRC _____________________.
## Footnote
Chapter 1
S 500
99
As the water is rapidly evaporated, the water vapor is removed by
_________________________ or _____________________.
## Footnote
Chapter 7
1. Dehumidification
2. Ventilation
100
A room with water damage measures 16 feet × 12 feet.
Water has wetted all of the flooring in the room.
* The flooring is wet in an offset measuring
10 feet × 4 feet.
* Water is wicking up the walls less than 2
feet except for Wall A, measuring
12 feet × 8 feet.
* Water came down from above to wet all of
Wall A but not the ceiling.
The number of air movers to install will be:
________ for the room.
________ for the floors.
________ for the walls.
________ for the offset.
The total number of air movers required is ____ – ____.
## Footnote
Chapter 8
7-8
* Room: **1**
* Floor: 1 for every 50-70 Sqft of affected wet floor (16*12=192+(10*4)=232
232/70 = 3.314 (min) Round up to **4**
232/50 = 4.65 (max) Round up to **5**
* One airmover for every 10-150 Sqft of wet ceiling and Wall areas above 24" (less than 100 sqft add 1) (8-2)=6*12=72/100=.72 Round up to **1**
* add one for every wall inset and offset greater than 18" **1**
101
Which drying system is best?
Outside
75 Degrees / 20% RH
Affected Area
70 Degrees / 60% RH
## Footnote
Chapter 7
Open/Closed/Combo
Outside 26 GPP, Inside 65 GPP, Above 70 Degrees AND Lower Humidity Could use Open if weather and Security not an issue. Could also Burp the space to lower humidity.
102
What is the name of this drying system?
* Outside Humidity is NOT Lower
*Outside Temperature is above 70 Degrees Fahrenheit
## Footnote
Chapter 7
Closed
103
A balanced drying system is achieved when the rate of dehumidification is greater
than or equal to the rate of _____________________________.
## Footnote
Chapter 8
evaporation
104
. _______________________________ drying systems merge the benefits of both open and closed drying: the use of available, dry air from outside and the control offered by a closed system and mechanical dehumidification.
## Footnote
Chapter 7
Combo/Combination
105
After excess water has been extracted, the time needed to dry wet materials is
determined by the _____________________________________________________.
## Footnote
Chapter 7
Rate of evaporation
106
Moisture documentation of restoration work should include each of the following components:
a. Record of _________________ Content (RMC)
b. Moisture Map — a diagram or sketch indicating the boundaries and
moisture levels of the affected area
c. Record of _____________ Conditions (RDC), or Daily Humidity Record.
## Footnote
Chapter 10
1. Moisture
2. Drying
107
Elevating the temperature of a material will increase the _______________
_____________ associated with the moisture in the material.
## Footnote
Chapter 7
Vapor Pressure
108
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.
## Footnote
Chapter 3
Stop Work
109
When the air temperature increases, it can hold _________________ water vapor.
## Footnote
Chapter 7
More
110
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.
## Footnote
Chapter 8
Vapor Pressure
111
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.
## Footnote
Chapter 8
Condensation
70 Degrees
90 Degrees
112
Many building materials will absorb excess water vapor and suffer damage,
especially when air is allowed to remain above ________% relative humidity.
## Footnote
Chapter 3
60
113
What is the surface temperature at which condensation would become a
risk for air which is 80°F at 60%? _______________________
## Footnote
Chapter 7
64-65 Degrees
114
A thermo-hygrometer is used to monitor any air that can influence the
___________________ and/or _______________________ _______________________
within a restorative drying environment.
## Footnote
Chapter 6
1. Temperature
2. Humidity
115
The primary goal of the initial extraction of the affected area is to contain further
____________________ of the water within the structure.
## Footnote
Chapter 4
Mitigation
116
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.
## Footnote
Chapter 3
Health
117
What does a Sanitizer do?
## Footnote
Chapter 5
Kills or inactivates most organisms but not spores
118
The technician’s first responsibility when arriving at a water damage site is to
identify, communicate and eliminate ______________ _________________ if
reasonably possible
## Footnote
Chapter 3
Safety Hazards
119
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.
## Footnote
Chapter 7
1. 100%
2. Dew
120
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
## Footnote
Chapter 7
B. Warm the Material
121
If a structure had affected air at 75 F at 25% RH, the most efficient type of
dehumidifier to use would be a (choose one): refrigerant / desiccant
## Footnote
Chapter 8
Dessicant
122
Abide by local ___________________ and regulations when disposing extracted
water. Waste water is best disposed of into a sanitary sewer.
## Footnote
Chapter 4
Laws
123
Freeze drying (sublimation) is typically used with valuable saturated books and
documents. Books and documents saturated with clean water may be restorable if:
________________ or ___________________ as quickly as possible.
## Footnote
Chapter 7
1. Frozen
2. Dried
124
______________________occurs when a solid changes to a vapor (without going
through a liquid phase).
## Footnote
Chapter 7
Sublimation
125
Air filtration devices (AFDs) are needed in water restoration work whenever high levels of __________________ are being added to the air.
## Footnote
Chapter 8
Particulates
126
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.
## Footnote
Chapter 4
Extraction
127
One of the most effective methods of drying wet wood under hard surfaces is:
a. Heated airflow
b. Demolition of the wood
c. Negative air pressure
## Footnote
Chapter 7
A. Heated Air Flow
