Chapter 33: Hazardous Materials: Response Priorities And Actions

Front 1

The process of adding some substance to a product to weaken its concentration

Back 1

Dilution

Front 2

The process of lowering the concentration of vapors by spreading them out

Back 2

Vapor dispersion

Front 3

The process of applying a material that will soak up and hold the hazardous material

Back 3

Absorption

Front 4

Used when a liquid is flowing in a natural channel or depression and its progress can be stopped by blocking a channel

Back 4

Damming

Front 5

The process of keeping a hazardous material on the site or within the immediate area of release

Back 5

Confinement

Front 6

Actions relating to stopping a hazardous materials container from leaking, such as patching, plugging, or righting the container

Back 6

Containment

Front 7

The placement of impervious materials to form a barrier that will keep a hazardous material in liquid form from entering an area

Back 7

Diking

Front 8

Redirecting spilled material to an area where it will have less impact

Back 8

Diversion

Front 9

The process of creating an area to hold hazardous material

Back 9

Retention

Front 10

The process of controlling vapors by covering the product with foam or by reducing the temperature of the material

Back 10

Vapor suppression

Front 11

Why is the technique of absorption difficult for operational personnel to implement?

Back 11

Generally involves being in close proximity to the spill

Front 12

What is one of the first response priorities at a hazardous materials incident?

Back 12

Evacuating the exposed area

Front 13

The process of lowering the concentration of vapors by spreading them out

Back 13

Vapor dispersion

Front 14

Who makes the decision to terminate a hazardous material incident?

Back 14

Incident Commander

Front 15

What incident phase is when the imminent danger has passed and clean up and the return to normalcy have begun?

Back 15

Recovery phase

Front 16

What should hazardous materials technicians do in order to determine how far to extend evacuation distances?

Back 16

Use detection and monitoring equipment

Front 17

Which phase of the incident includes the compilation of all records necessary for documentation of the incident?

Back 17

Recovery phase

Front 18

The process of attempting to keep the hazardous material on the site or within the immediate area of the release

Back 18

Confinement

Front 19

The addition of another liquid to weaken the concentration of a hazardous material

Back 19

Dilution

Front 20

What is a major concern when considering evacuation?

Back 20

Potential for exposure to the material

Front 21

What can be used for most flammable and combustible liquid fires?

Back 21

Foam

Front 22

What method of safeguarding people in hazardous area involves keeping them in a safe atmosphere?

Back 22

Shelter In Place

Front 23

The process of creating an area to hold hazardous materials

Back 23

Retention

Front 24

What should fire fighters look for when they approach a hazardous materials incident?

Back 24

Natural control points

Front 25

What does the first decision concerns during the initial size up at hazardous materials incident?

Back 25

Personnel safety

Front 26

Keeping in safe atmosphere especially concerning structures

Back 26

Shelter In Place

Front 27

What stage of hazmat incident is after danger has passed, clean up and return to normancy begun?

Back 27

Recovery phase

Front 28

Is it necessary for victim search is hazardous material exposure is not survivable?

Back 28

No = not necessary = not survivable

Front 29

How are most flammable and combustible liquid fires extinguished?

Back 29

Use of foam

Front 30

What is the process of creating an area to hold hazardous materials?

Back 30

Retention

Front 31

What must be established before an evacuation order is given?

Back 31

1. Safe area

2. Suitable shelter

Front 32

What is the first priority in any emergency response situation?

Back 32

Protection of life

Front 33

What is the major factor in decision whether to evacuate?

Back 33

Toxicity of the hazardous material

Front 34

What is placed across a small stream or ditch to completely stop the flow of materials through the channel?

Back 34

Complete dam

Front 35

Who decides to withdraw to a safe distance and let the hazardous materials incident run its course?

Back 35

Incident commander

Front 36

What technique is used to redirect the flow of liquid away from an area?

Back 36

Diversion

Front 37

What cargo tanks are certified to carry chemicals that are transported at low pressures?

Back 37

MC 307 / DOT 407

Front 38

What technique can be used only when the identity and properties of hazardous material are known with certainty?

Back 38

Dilution

Front 39

What is a factor in determining whether shelter in place is a viable option?

Back 39

Duration of the hazardous materials incident

Front 40

How should fire fighting foams be applied to the burning material and surface?

Back 40

1. Gently applied, bounced off another object

2. Ran down method

Front 41

How is radiation monitoring conducted?

Back 41

Using a direction reading radiation monitor such as a Geiger counter

Front 42

How are oxygen levels and combustible levels typically monitored?

Back 42

Two, three, four or five gas monitor