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42 Cards in this Set
- Front
- Back
The process of adding some substance to a product to weaken its concentration |
Dilution |
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The process of lowering the concentration of vapors by spreading them out |
Vapor dispersion |
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The process of applying a material that will soak up and hold the hazardous material |
Absorption |
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Used when a liquid is flowing in a natural channel or depression and its progress can be stopped by blocking a channel |
Damming |
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The process of keeping a hazardous material on the site or within the immediate area of release |
Confinement |
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Actions relating to stopping a hazardous materials container from leaking, such as patching, plugging, or righting the container |
Containment |
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The placement of impervious materials to form a barrier that will keep a hazardous material in liquid form from entering an area |
Diking |
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Redirecting spilled material to an area where it will have less impact |
Diversion |
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The process of creating an area to hold hazardous material |
Retention |
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The process of controlling vapors by covering the product with foam or by reducing the temperature of the material |
Vapor suppression |
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Why is the technique of absorption difficult for operational personnel to implement? |
Generally involves being in close proximity to the spill |
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What is one of the first response priorities at a hazardous materials incident? |
Evacuating the exposed area |
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The process of lowering the concentration of vapors by spreading them out |
Vapor dispersion |
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Who makes the decision to terminate a hazardous material incident? |
Incident Commander |
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What incident phase is when the imminent danger has passed and clean up and the return to normalcy have begun? |
Recovery phase |
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What should hazardous materials technicians do in order to determine how far to extend evacuation distances? |
Use detection and monitoring equipment |
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Which phase of the incident includes the compilation of all records necessary for documentation of the incident? |
Recovery phase |
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The process of attempting to keep the hazardous material on the site or within the immediate area of the release |
Confinement |
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The addition of another liquid to weaken the concentration of a hazardous material |
Dilution |
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What is a major concern when considering evacuation? |
Potential for exposure to the material |
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What can be used for most flammable and combustible liquid fires? |
Foam |
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What method of safeguarding people in hazardous area involves keeping them in a safe atmosphere? |
Shelter In Place |
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The process of creating an area to hold hazardous materials |
Retention |
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What should fire fighters look for when they approach a hazardous materials incident? |
Natural control points |
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What does the first decision concerns during the initial size up at hazardous materials incident? |
Personnel safety |
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Keeping in safe atmosphere especially concerning structures |
Shelter In Place |
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What stage of hazmat incident is after danger has passed, clean up and return to normancy begun? |
Recovery phase |
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Is it necessary for victim search is hazardous material exposure is not survivable? |
No = not necessary = not survivable |
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How are most flammable and combustible liquid fires extinguished? |
Use of foam |
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What is the process of creating an area to hold hazardous materials? |
Retention |
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What must be established before an evacuation order is given? |
1. Safe area 2. Suitable shelter |
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What is the first priority in any emergency response situation? |
Protection of life |
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What is the major factor in decision whether to evacuate? |
Toxicity of the hazardous material |
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What is placed across a small stream or ditch to completely stop the flow of materials through the channel? |
Complete dam |
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Who decides to withdraw to a safe distance and let the hazardous materials incident run its course? |
Incident commander |
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What technique is used to redirect the flow of liquid away from an area? |
Diversion |
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What cargo tanks are certified to carry chemicals that are transported at low pressures? |
MC 307 / DOT 407 |
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What technique can be used only when the identity and properties of hazardous material are known with certainty? |
Dilution |
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What is a factor in determining whether shelter in place is a viable option? |
Duration of the hazardous materials incident |
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How should fire fighting foams be applied to the burning material and surface? |
1. Gently applied, bounced off another object 2. Ran down method |
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How is radiation monitoring conducted? |
Using a direction reading radiation monitor such as a Geiger counter |
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How are oxygen levels and combustible levels typically monitored? |
Two, three, four or five gas monitor
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