Classes and Placards

Question 1

Class 1

Answer 1

Explosive:
- 1.1 Mass explosion hazard
- 1.2 Projection hazard
- 1.3 Fire hazard/minor blast/minor projection hazard
- 1.4 No significant hazard
- 1.5 Very insensitive mass explosion hazard
- 1.6 Extremely insensitive no mass explosion hazard

Question 2

Class 2

Answer 2

Gases:
- 2.1 Flammable gases
- 2.2 Non-flammable, non-toxic gases
- 2.3 Toxic gases

Question 3

Class 3

Answer 3

Flammable/Combustible Liquids

Question 4

Class 4

Answer 4

Flammable Solids; Spontaneous Combustion; On Contact With Water Emit Flammable Gases
- 4.1 Flammable solids (self-reactive, solid desensitized explosives)
- 4.2 Spontaneous combustion
- 4.3 On contact with water emit flammable gases

Question 5

Class 5

Answer 5

Oxidizing Substances and Organic Peroxides
- 5.1 Oxidizing substances
- 5.2 Organic Peroxides

Question 6

Class 6

Answer 6

Toxic Substances and Infectious Substances:
- 6.1 Toxic substances
- 6.2 Infectious substances

Question 7

Class 7

Answer 7

Radioactive Materials

Question 8

Class 8

Answer 8

Corrosive Substances

Question 9

Class 9

Answer 9

Miscellaneous Hazardous Materials

Question 10

NFPA 704 Blue

Answer 10

Health:
4 - Severe hazard
3 - Serious hazard
2 - Moderate hazard
1 - Slight hazard
0 - Minimal hazard

Question 11

NFPA 704 Red

Answer 11

Flammability:
4 - Flammable gases, volatile liquids, pyrophoric materials
3 - Ignites at ambient temperatures
2 - Ignites when moderately heated
1 - Must be preheated to burn
0 - Will not burn

Question 12

NFPA 704 Yellow

Answer 12

Instability:
4 - Capable of detonation or explosive decomposition at ambient conditions
3 - Capable of detonation or explosive decomposition with strong initiating source
2 - Violent chemical change possible at elevated temperature and pressure
1 - Normally stable, but becomes unstable if heated
0 - Normally stable

Question 13

NFPA 704 White

Answer 13

Special Hazard:
OX = Oxidizing
SA = Simple asphyxiants
W = Reacts violently or explosively with water

Question 14

Signal Words

Answer 14

Danger - Will cause death/injury
Warning - Could cause death/injury
Caution - Could cause minor/moderate injury
Notice - Not related to injury
Safety Instructions - Safety-related instructions

Question 15

Orange Panel Numbers

Answer 15

Top numbers:
Followed by zero = One number adaquately indicates
Doubling number = Intensification of hazard
9 as 2nd/3rd number = Risk of spontaneous violent reaction
X = Will react dangerously with water
Bottom numbers: 4 digit UN number

Question 16

DOT Placard Colors

Answer 16

Orange = explosive
Yellow = oxidizer/reactive
Red = flammable
White = health hazard
Blue = water reactive
Green = nonflammable gas

Question 17

Radioactive Placard Parts

Answer 17

White I - Extremely low radiation levels
White II - Low radiation levels
White III - Higher radiation levels
Fissile - Can undergo fission
Empty - Used to store radioactive substances

Question 18

Hazardous Materials/Weapons of Mass Destruction, Standard for Responders

Answer 18

NFPA 470

Question 19

Military symbols (shapes and numbers)

Answer 19

1 Octagon = Greatest hazard (1.1 UN)
2 X = 1.2 UN
3 Triangle = 1.3 UN
4 diamond = 1.4 UN

Question 20

DOT Placard Symbols

Answer 20

Explosive, oxidizer (flaming O), radioactive, flammable, nonflammable gas (high pressure tube), corrosive, poison.

Numbers: UN class and 4-digit number

Question 21

Military symbols (color guys)

Answer 21

Red you’re dead (highly toxic)
Yellow you’re mellow (harassing agents)
White is bright (white phosphorous/spontaneously combustible)

Question 22

Packing Groups

Answer 22

I = High Danger
II = Medium Danger
III = Low Danger