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Flashcards in 3/4 Exam Deck (140)
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1

What is carbon monoxide's flammable range

12.5% to 74% in air

2

What are the causes of oxygen deficiency

Oxidation combustion absorption bacterial action chemical reaction purging agents poor ventilation decomposition

3

List some other types of placarding in class nine, miscellaneous dangerous goods

Mixed load fumigation hazard marine pollutant

4

How many divisions of class nine materials

One

5

How many divisions for class eight materials

One

6

How many divisions of class seven materials

One

7

How many divisions of class six Materials

Two

8

How many divisions of class five materials

Two

9

How many divisions of class four materials

Three

10

How many divisions of class III materials

One

11

How many divisions of class two materials

Three

12

How many divisions of class one materials

Six

13

What are the nine classes of hazardous materials

1-Explosives 2-gases 3-flammable liquids 4-flammable solids/dangerous when wet 5-oxidizers and organic peroxides 6-toxic and infectious substances 7-radioactive materials 8-corrosive 9-miscellaneous hazardous materials

14

List the colors of placards and labels for specific hazards

Red- flammable orange- explosive white- toxic or infectious green- compressed but nonflammable, non-toxic blue- reactive black- corrosive yellow- oxidizer

15

When must be UN number be shown with the placard?

Shipments greater than or equal to 4000 kg

16

When must a placard be placed on all sides and ends

-Shipments greater than 500 kg -quantity or concentrations requiring an emergency response plan to be filed with transport Canada -for liquids or gases in direct contact with the container

17

When are placards used

Shipments greater than 450 L

18

When our labels used

Small containers up to 450 L

19

List the category position and color of the NFPA 704 diamond

Health - left -blue flammability -top -red reactivity -right -yellow special information -bottom -white

20

Define hazardous materials

Any material or substance, which even in normal use, poses a risk to health, safety, property, or the environment

21

What are the three types of facility and transport markings

Signs - on fixed sites NFPA 704 labels -10 cm x 10 cm required up to 450 L placards -diamond shaped 25 cm x 25 cm used in transportation of greater than 450 L

22

What do you do if there is flame impinging on a tank

-Cool the tank from top to bottom (the vapor area) -use master stream appliances -water must not be turning to steam; it must reach the container -large tanks failwithin 10 to 20 minutes -nonsurvival area 500 feet

23

What are the warning signs of a potential BLEVE

Pressure relief device is working pitch or sound gets louder pinging popping or snapping sounds are heard visible steam from tank up on cooling discoloration of shell at impingement bulge or bubble indicates serious localized heating of the vapor area

24

What is the explosive range of natural gas

5 to 15%

25

How is propane dangerous

Asphyxiant easily ignitable (450°C ignition temperature, 842°F) 1.5 times heavier than air subject to BLEVE

26

What is the proper name for the EFRS foam

AFC 185-Niagara 1-3% AR-FFFP

27

List the class A foam percentages and applications

0.1% deep seated fires in furniture, smoldering ground fires or heavy duff where penetration is required 0.1-0.5% wildland grass fires 0.5% structural firefighting with attached fog nozzles, woodland surface fires using foam nozzles 1% protecting structural exposures, forming barriers during the wildland firefighting operations

28

List the parts of a typical wildland fire

Head fingers rear flanks perimeter islands the green the black spot fire

29

What are the 3Rs of wildland firefighting

Retreat regroup reassess

30

Define the head of a wildfire

The fastest spreading leading edge of the fire and where the most damage occurs. if you gain control of the head of the fire you usually gain control over all of it