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Water Mitigation > Homework > Flashcards

Homework Flashcards

1
Q

The most critical course of action in restorative drying

A

Respond quickly

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2
Q

Respiratory protection regulations state that the employer must provide

A
  • medical evaluation
  • fit testing
  • training
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3
Q

As a minimum medical requirement technicians need medical consultation with who?

A

Primary care physician

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4
Q

Technicians must have ready access to several items to protect themselves from many hazards associated with contaminated water losses. These items protect them from:

A

Potential exposures

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5
Q

The contract clearly states the agreement between building owner and the restorative contractor. The form specifies should is responsible for payment and should be signed when?

A

Before work begins

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6
Q

The technicians first responsibility when arriving at a water damage site is to identify, communicate and eliminate what?

A

Safety hazards

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7
Q

The most common safety hazards associated with water damaged structures result in:

A

Slips and falls

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8
Q

Federal regulations apply to the handling of ______ based paint and asbestos.

A

Lead

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9
Q

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 restorer inspects which areas?

A

All potentially affected

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10
Q

The ultimate goal is to find the edge of water migration, which moves in a 3D path throughout the structure. This is accomplished across carpeted surfaces using what?

A

Moisture sensor

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11
Q

The ultimate goal is to find the edge of water migration, which moves in a 3D path throughout the structure. This is accomplished across most hard surfaces using what?

A

Non-invasive (non-penetrating) moisture meter

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12
Q

Water from a clean source with no substantial risk of causing sickness or discomfort?

A

Category 1

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13
Q

Water that has a significant degree of chemical, biological and/or physical contamination and potential to cause sickness or discomfort

A

Category 2

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14
Q

Disease causing

A

Pathogenic

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15
Q

Water intrusion results from a grossly unsanitary source or carries pathogenic agents

A

Category 3

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16
Q

First priority on every sewage loss

A

Worker and occupant health and safety

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17
Q

When resistance is encountered and performing proper services in a Category 3 water loss becomes a challenge, what should restorers do?

A

Stop work immediately and prevent liability

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18
Q

Losses where regulated or hazardous materials have contaminated the structure. Does the category of water change?

A

No

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19
Q

During the initial inspection, pre-existing conditions should be identified, documented and communicated to who?

A

All materially interested parties

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20
Q

The loss of integrity in the adhesives used to laminate the primary and secondary backing.

A

Carpet delamination

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21
Q

Hygroscopic materials gain and lose moisture continually in an effort to ____ with the water content in the surrounding air mass.

A

Equalize

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22
Q

The more hygroscopic the material, the faster it will collect water vapor, and the easier it will be to suffer what type of damage?

A

Secondary

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23
Q

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 what?

A

R-Value

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24
Q

What surface temp would you h e condensation?

A

Look for the dew point

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25
Q

Best way to get water out of materials?

A

Extraction

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26
Q

Another name for drywall

A

Gypsum

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27
Q

Good easy way to lower humidity in a home

A

Open windows

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28
Q

Tools to lift carpet

A

Knee kicker and carpet all

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29
Q

Material that’s weaker when wet and stronger when dry

A

Drywall

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30
Q

Gain water

A

Absorb

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31
Q

Lose water

A

Desorb

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32
Q

Absorb and desorb water

A

Hygroscopic material

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33
Q

Best drying condition for temperate and RH?

A

Furthest separation.

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34
Q

Moisture below hardwood surface causes

A

Cupping

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35
Q

Moisture on surface of hardwood floor causes

A

Crowning

36
Q

Best way to handle wet concrete

A

Dry it in place

Will likely never demo concrete

37
Q

Gypsum wallboard

A

Drywall

38
Q

Ambient air

A

Affected air

39
Q

Has to be vented out of the building

A

Desiccant

40
Q

Other names for Ai Filtration Devices

A
  • air Scrubbers
  • hepa
  • negative air fan
41
Q

Percentage of water in a Class 1 loss

A

Less than 5%

42
Q

Percentage of water in a Class 2 loss

A

Between 5-40%

43
Q

Percentage of water in a Class 3 loss

A

40% or more

44
Q

Percentage of water in a Class 4 loss

A

All dense material affected

45
Q

Any surface hotter than dew point

A

Evaporation

46
Q

Any surface cooler than dew point

A

Condensation

47
Q

Condensation tells you the

A

Dew point

48
Q

The force by a gas on the surrounding environment

A

Vapor pressure

49
Q

4 knows of drying

A
  1. What’s wet?
  2. How wet is it?
  3. Is it drying?
  4. Is it done?
50
Q

S-500 requires readings where?

A

Outside
Affected area
Non-affected area
Dehumidifier output

(HVAC optional)

51
Q

Primary water damage

A

Water directly caused it

52
Q

Secondary water damage

A

Poor humidity or growth

53
Q

Best place to dispose of extracted water

A

Sanitary sewer

54
Q

Primary goal of the initial extraction of the affected are is to what?

A

Contain further migration of the water within the structure

55
Q

Best tool to disengage a carpet from the tackles strips.

A

Knee kicker and carpet awl

56
Q

The cushion on a carpet has a skin or mesh on the top side. The purpose is to ease carpet stretching. Is it a vapor barrier?

A

No.

57
Q

3 levels of biocidal activity

A

Sanitizer
Disinfectant
Sterilizer

58
Q

Best way to set a restorative drying goal is to?

A

Establish a drying standard

59
Q

Drying standard is established by obtaining a moisture using what kind of material?

A

Unaffected

60
Q

Most accurate moisture readings come from

A

Moisture meter

61
Q

Non-invasive meters work best for locating abnormal moisture behind and beneath finishing materials such as?

A

Ceramic tile & vinyl floor coverings

62
Q

Air being used to dry affected materials

A

Psychrometric readings

63
Q

Air produced by mechanical systems

A

Dehumidifiers

64
Q

What is used to monitor any air that can influence temperature and/or relative humidity?

A

Thermo-hygrometer

65
Q

After physically removing excess water, the time required to dry wet materials is influenced mostly by

A

Rate of evaporation

66
Q

As water is rapidly evaporated, the water vapor is removed by

A

Dehumidification or ventilation

67
Q

As moisture evaporates from a wet material, the surface of the materials becomes

A

Cooler

Because energy is released from material

68
Q

When a solid changes to a vapor

A

Sublimation

69
Q

Sublimation is also referred to as

A

Freeze drying

Typically used with valuable saturated books and documents

70
Q

When air temperature increases, it can hold more or less water vapor?

A

More

71
Q

One of the most effective methods for drying wet wood under hard surfaces?

A

Heated airflow

72
Q

Another term for heated airflow

A

Thermal energy

73
Q

If air vapor pressure is low and the material vapor pressure is high, what happens?

A

Evaporation

74
Q

Elevating the temperature of the material will increase what?

A

The vapor pressure

75
Q

To maintain safety certified equipment, restorers must regularly replace?

A

Cords and inlet and outlet screens that are damaged

76
Q

Dehumidification reduces what

A

Moisture content in the air

77
Q

A balanced drying system is achieved when the rate of dehumidification is greater than or equal to what

A

Rate of evaporation

78
Q

If the rate of evaporation is allowed to exceed the rate of dehumidification what could occur?

A

Secondary damage

79
Q

AFDs are needed in water restoration work whenever high levels of what are bing added to the air?

A
  • dust
  • smoke or other particulates
  • aerosolized soils
80
Q

“Was-wood” material with the least engineering, and thus the most atrial fiber bonding. It is resilient to swelling and delamination due to its wood VENEER assemblies which are glued under extreme pressure

A

Plywood

81
Q

We particle board would normally be

A

Removed and replaced

82
Q

RMC

A

Record of moisture content

83
Q

RDC

A

Record of drying conditions

Or

Daily Humidity Record

84
Q

As mold grows, it can produce a toxic chemical substance. All mold related toxins are referred to as

A

Mycotoxins

85
Q

Common safety measures to take when the presence of mold is suspected

A

Containment, hepa, PPE

86
Q

How often to monitor jobs?

A

Daily

Water Mitigation (3 decks)

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