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When responding to hazardous materials, operations level responders must be able to;
1. Identify
2. Plan
3. Implement
4. Evaluate
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What 2 properties of containers and contents?
Physical and chemical
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What are physical properties?
They are the characteristics of a material that do not involve the chemical nature of the material.
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What are some materials that have physical properties?
- Vapor pressure
- Boiling point
- melt point / freezing point / sublimation
- Vapor density
- Solulibility
- Specific gravity
- Persistence
- Appearance and color
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What are chemical properties?
They are the characteristics of a material that occur on a molecular level.
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What are some materials that have chemical properties?
- Flamability
- Corrosivity
- Reactivity
- Radioactivity
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What is flammable range?
They are values given in concentration percentages of product vapor to air.
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What is a flash point?
The temperature at which a liquid will give of vapors that will ignite readily given an ignition source.
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What are the 4 types of radiation?
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What are the 4 types of solulibility?
- Solid in liquid
- Liquid in liquid
- Gas in liquid
- Gas in gas
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What is polymerization?
When 2 or more molecules combine to form larger molecules.
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What is DIV 1.1?
Mass explosion hazard.
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What is DIV 1.2?
Projection hazard.
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What is DIV 1.3?
Fire hazard
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What is DIV 1.4?
Minor explosion
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What is DIV 1.5?
Very insensitive explosives with mass explosion hazard
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What is DIV 1.6?
Extremely insensitive no mass explosion hazard
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What is DIV 2.1?
Flammable gas
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What is DIV 2.2?
- Non-Flammable
- Non-Poisonous
- Compressed gases
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What is DIV 2.3?
Poisonous gases
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What does the flammable placard look like?
Red background, white flame
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What does the nonflammable placard look like?
Green background, white cylinder.
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What does the oxidizer placard look like?
Yellow background, flaming "O"
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What does the Poison Gas placard look like?
White background, skull and crossbones
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What is the major hazard of a class 2?
A boiling liquid expanding vapor explosion
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What is the major hazard of a class 3?
Burns readily
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What is the major hazard of a class 4?
Rapid combustion that releases mass quantities of smoke.
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What is the major hazard of a class 5?
Supports combustion and intensifies fire.
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What is the major hazard of a class 6?
Toxicity and infections
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What is the major hazard of a class 7?
Radioactive burns
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What is the major hazard of a class 8?
Burns and emulsification of skin tissue
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What are dangerous placards?
Placards that are dangerous if 2 items are combined from table 11 and are more than 1,001 lbs
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What are subsidiary placards?
These are hazards of a material other than the primary hazard
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What are non pressure tank cars?
They have no pressure or low pressure and capacity is 4,000 to 45,000. They with and without expansion domes.
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What are pressure tank cars?
They are cylindrical non compartmented steel or aluminium tanks. Their capacity is between 4000 to 45000 gallons. PSI is 100 to 600
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What are cryogenic liquid tanks?
They are made up of two tanks. Their capacity varies and their psi is .25 or lower
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