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hazmat > Chapter 13 > Flashcards

Chapter 13 Flashcards

1
Q

Spill control tactics attempt to: (607)
A. spill hazardous materials in a carefully controlled manner.
B. remediate spilled hazardous materials from contaminated
exposures.
C. contain the product in its original container (or another) and
prevent it from escaping.
D. reduce the amount of contact the product makes with people,
property, and the environment

A

D

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2
Q

Why should ICs consult technical sources before using equipment to
confine spilled materials? (607-608)
A. To determine how to correctly use a piece of equipment
B. To determine if a similar situation has occurred in the past
C. To determine if the spilled material will adversely affect the
equipment
D. To determine if the spilled material is able to be contained by
the equipment

A

C

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3
Q

A defensive spill-control tactic that confines a hazardous material,
rather than changing its physical and/or chemical properties, is:
(609)
A. ventilation.
B. dissolution.
C. absorption.
D. neutralization

A

C

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4
Q

Neutralization and vapor dispersion are: (609)
A. offensive spill-control tactics aimed at stopping the release of a
hazardous material.
B. defensive spill-control tactics aimed at confining spilled
hazardous materials.
C. offensive spill-control tactics aimed at confining spilled
hazardous materials.
D. defensive spill-control tactics aimed at reducing the amount of
harm a material causes

A

D

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5
Q

Why must responders treat and dispose of absorbents as hazardous
materials? (612)
A. Absorbents themselves are hazardous materials.
B. Absorbents undergo violent chemical reactions after use.
C. Absorbents may be toxic if exposed to too much oxygen.
D. Absorbents retain the properties of the materials they absorb

A

D

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6
Q

During the process of adsorption, the molecules of the liquid
hazardous material: (612)
A. physically adhere to the adsorbent material rather than being
absorbed into its inner spaces.
B. chemically adhere to the adsorbent material rather than being
absorbed into its inner spaces.
C. chemically adhere to the absorbent material rather than being
adsorbed into its inner spaces.
D. physically adhere to the absorbent material rather than being
adsorbed into its inner spaces

A

A

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7
Q 
Responders usually use organic-based materials, such as activated 
charcoal or carbon, as: (612)
A. adsorbents.
B. absorbents.
C. neutralizers.
D. vapor suppressants
A

A

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8
Q

Which process might be used for the temporary mitigation of
radioactive and biological substances? (613)
A. Dilution
B. Absorption
C. Adsorption
D. Blanketing/covering

A

D

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9
Q

Diking, damming, diverting, and retention: (614)
A. reduce the emission of vapors at a hazmat incident.
B. control air movement using natural or mechanical means.
C. reduce the potential risks of liquid hazardous materials by
dilution.
D. control the flow of liquid hazardous materials away from the
point of discharge

A

D

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10
Q 
To reduce the emission of vapors at a hazmat incident, responders 
should use: (614)
A. adsorption.
B. ventilation.
C. vapor dispersion.
D. vapor suppression
A

D

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11
Q

What must responders do after using water streams for vapor
dispersion? (614)
A. Neutralize the corrosive contaminants in runoff water.
B. Confine and analyze runoff water for possible contamination.
C. Dispose of equipment as though it were a hazardous material.
D. Use chemical vapor suppressants to confine remaining vapors

A

B

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12
Q

When choosing the type of ventilation to use, remember that: (616)
A. zero-pressure ventilation removes atmospheric contaminants
more effectively than positive-pressure ventilation.
B. neutral-pressure ventilation removes atmospheric contaminants
more effectively than positive-pressure ventilation.
C. positive-pressure ventilation removes atmospheric contaminants
more effectively than negative-pressure ventilation.
D. negative-pressure ventilation removes atmospheric
contaminants more effectively than positive-pressure
ventilation

A

C

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13
Q

One problem associated with dispersion is that it can: (616)
A. only control small, shallow liquid spills.
B. spread a hazardous material over a wide area.
C. only be accomplished by creating a foam blanket.
D. not be used on hydrocarbon spills such as oceanic crude oil

A

B

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14
Q 
Which action rarely has practical applications at hazmat incidents in 
terms of spill control? (617)
A. Dilution
B. Adsorption
C. Neutralization
D. Vapor Suppression
A

A

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15
Q 
Responders use dilution more frequently when dealing with: (617)
A. corrosive vapor.
B. terrorist attacks.
C. hydrocarbon spills.
D. decontamination operations
A

D

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16
Q 
Which method of spill control involves raising or lowering the pH of 
corrosive materials? (618)
A. Dilution
B. Neutralization
C. Vapor suppression
D. Blanketing/covering
A

B

17
Q

To stop or limit the escape or to contain the release of a product
either in its original container or by transferring it to a new one is the
goal of: (618)
A. fire control.
B. spill control.
C. leak control.
D. dilution control

A

C

18
Q

Provided they have appropriate training, equipment, and PPE,
Operations level responders can take offensive actions, like leak
control, in situations involving: (618)
A. chlorine.
B. anhydrous ammonia.
C. radioactive materials.
D. gasoline and natural gas fuels

A

D

19
Q 
Which type of cargo tank truck does NOT typically have emergency 
shutoff devices? (619)
A. High pressure tanks 
B. Corrosive liquid tanks
C. Nonpressure liquid tanks
D. Low-pressure chemical tanks
A

B

20
Q 
At a fixed facility or at a pipeline, responders should NOT shut any 
valves without direction from: (622)
A. law enforcement.
B. federal authorities.
C. the owner of the facility.
D. facility or pipeline operators
A

D

21
Q

If the products of combustion present fewer hazards than the leaking
chemical, the best course of action may be to: (623)
A. attempt to extinguish the fire immediately.
B. dilute the chemical by applying copious amounts of water.
C. contain the release of the chemical in its original container.
D. protect exposure and let a fire burn until the fuel is consumed

A

D

22
Q

When might withdrawal be the safest tactical option for responders?
(623-624)
A. After terrorist or criminal incidents
B. At incidents involving liquid natural gas
C. At any incident involving cryogenic liquids
D. When there is potential for a BLEVE or other explosion

A

D

23
Q

Why should responders avoid contact with flammable or combustible
products? (624)
A. Protective clothing may not be able to withstand the effects of
these products.
B. Protective clothing can ignite puddles, streams, or contaminated
pools of these products.
C. Protective clothing may not be able to withstand the corrosive
effects of these products.
D. Protective clothing can absorb these products and ignite if
exposed to an ignition source

A

D

24
Q

What is true of Class B foam concentrates? (626)
A. Class B foams are ineffective when used for vapor suppression.
B. Aqueous film forming foam (AFFF) is used on water-miscible
materials.
C. Foam concentrates that are intended for polar solvents can be
used on hydrocarbon fires.
D. Concentrates designed for hydrocarbon fires will be equally
effective on polar solvent fires

A

C

25
Q

In general, the application rate to control an unignited liquid spill is
_____ than that required to extinguish a spill fire. (630)
A. slightly less
B. slightly more
C. substantially less
D. substantially more

A

C

26
Q

Why should responders use air-aspirating nozzles rather than water
fog nozzles for vapor suppression? (630)
A. Aerated foam can be applied in smaller quantities.
B. Water fog nozzles are incapable of vapor suppression.
C. Water fog nozzles can only be used on flammable liquid fires.
D. Aerated foam maintains the vapor suppressive blanket longer

A

D

27
Q 
Foam cannot seal vapors of: (631)
A. boiling liquids.
B. cryogenic liquids.
C. pressurized liquids.
D. alcohol-type liquids
A

A

28
Q

The most common cause of a BLEVE is when: (635)
A. flames from inside the container cause the tank shell and the
liquid to overheat.
B. flames surround the tank shell and the shell itself and the liquid
become overheated.
C. flames contact the tank shell above the liquid level and the tank
shell itself has overheated.
D. flames contact the tank shell below the liquid level and the
liquid itself has overheated

A

C

29
Q

How can water be used in flammable and combustible liquid fire
control? (636)
A. It can be used as a cooling agent.
B. It can be used as an extinguishing agent.
C. It can be used for dilution of toxic materials.
D. It can only be used for hydration of responders

A

A

30
Q

When using water streams to disperse gas being released under
pressure, the ______ of the water streams must exceed that of the
escaping gas. (636)
A. speed and height
B. mass and velocity
C. weight and height
D. surface area and speed

A

B

31
Q

What may indicate that the pressure within a container is increasing
and that container failure may be imminent? (636)
A. A decrease in the intensity of sounds
B. A decrease in the temperature of the container’s shell
C. An increase in the intensity of sounds or fire issuing from a
relief valve
D. A decrease in the temperature of the container and failure of
the emergency shutoff device

A

C

32
Q

At an incident involving a break in an underground pipe, personnel
should first evacuate the area immediately around the break and the
area: (637)
A. upwind.
B. to the left.
C. downwind.
D. to the right

A

C

hazmat (18 decks)

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