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HazMat > General Chem > Flashcards

General Chem Flashcards

1
Q

3 basic rules

A

1) . Like dissolves like
2) . Opposites attract
3) . Never mix anything with oxidizers

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2
Q

3 things with wide flammable ranges

A

Aldehydes
Alcohol
Ether

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3
Q

PPM percentages

A 
1% = 10,000 PPM
10% = 100,000 PPM
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4
Q

Teratogen

A

A material that affects the offspring when a developing embryo or fetus is exposed to that material

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5
Q

Vapor pressure range

A

0 - 760 mmHg

Anything above 760 mmHg is measured in atmospheres (Atm)

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6
Q

Pyrophoric

A

Material that ignites when exposed to dry air at or below 130 F

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7
Q

What are the halogens

A

F (Fluorine)
Cl (Chlorine)
Br (Bromine)
I (Iodine)

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8
Q

7 Diatomics

A

H2, N2, O2, F2
Cl2
Br2
I2

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9
Q

Isomers

A

Empirically the same, structurally different

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10
Q

Prefixes

A 
Mono = 1
Di = 2
Tri = 3
Tetra = 4
Penta = 5
Hexa = 6
Hepta = 7
Octa = 8
Nona = 9
Deca = 10
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11
Q

Polarity

A

Has a carbonyl (O=C) or Alcohol (OH)

Super Polar = Glycerol, Glycol, Organic Acid, Alcohol
Polar = Aldehyde, Ketone, Esters
Non-Polar = Hydrocarbon Families, Ether, Organic Peroxides, Alkyl Halides

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12
Q

Oxidizers

A

Incompatible with reducers

Halogens (X2)
Salt Peroxides
Oxysalts
Oxyradicals
Organic Peroxides
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13
Q

Reducers

A

Incompatible with oxidizers

Pi bonds (C=C)
Alcohols (R-OH)
Aldehydes (R-CHO)
Ethers (R-O-R
A.V. Oils
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14
Q

1300 rule

A

Calculate VP x 1300 = PPM of vapor in container/space

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15
Q

13 gases lighter than air

A

4H MEDIC ANNA:

Hydrogen (H2)
Helium (He)
Hydrogen cyanide (HCN)
Hydrogen fluoride (HF)

Methane (CH4)
Ethylene (C2H4)
Diborane (B2H6)
Illuminating gas (mix of methane/ethane)
Carbon Monoxide (CO)

Ammonia (NH3)
Neon (Ne)
Nitrogen (N2)
Acetylene (C2H2)

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16
Q

Variables affecting physical and chemical properties

A

Inverse relationship:

M.W. F.P. B.P. | V.P. V.C. F.R.D. I.T.

17
Q

MSST

A

Maximum safe storage temperature

18
Q

SADT

A

Self accelerating decomposition temperature

19
Q

A, a, B

A 
A = salts
a = nonsalts
B = hydrocarbons
20
Q

PPE for ammonia

A

Is both a flammable gas and corrosive

Can’t wear turnouts or Class A (unless solve for one of the variables)

21
Q

Weight of air

A

28.5

22
Q

PPM calculation from PID reading

A

PID reading X CF = Actual PPM

23
Q

02 displacement in PPM calculation

A

20.9% - actual 02 reading % X 5 X 10,000
.1% of 02 change equals 5,000 PPM (1% = 50,000 PPM)
Since 02 is only 20% (1/5) of air, total air displacement would be 02 PPM displacement X 5 (e.g. .1% of 02 change would be total of 25,000 PPM air displacement)

24
Q

Nonsalts

A

Nm + Nm

Hydrocarbons, hydrocarbon derivatives, inorganic nonsalts

25
Q

Common oxyradicals

A 
(-1) = FO3, ClO3, BrO3, IO3, NO3, MnO3
(-2) = CO3, CrO4, SO4
(-3) = BO3, PO4, AsO4
26
Q

LEL calculation

A

LEL meter reading X CF = actual LEL

27
Q

DOT classes

A

Every Good Firefighter Fries Onions Plus Roasts Chicken Mmm
1 - Explosives (table 1 items - placard for any quantity)
2 - Gases
3 - Flammable liquids
4 - Flammable solids
5 - Oxidizing substances and organic peroxides
6 - Poisonous (toxic and infectious substances)
7 - Radioactive materials
8 - Corrosive substances
9 - Miscellaneous HazMat

28
Q

NFPA 704 marking system

A 
4 hazards
Specific to facilities
Type of hazards and levels
0 (lowest) - 4 (highest)
Doesn't show quantity, just the highest hazard of any of the substances per category
29
Q

Air monitoring order of priority

A 
Radiation
Corrosive
02 deficient atmosphere
Flammable + explosive atmosphere
Acutely/chronically toxic atmosphere
Biological/etiological agent atmosphere
30
Q

Hydrogen Sulfide

A 
H2S
Referred to as sewer gas
Heavier than air
Smells like rotten eggs
Fatigues your olfactory sense
Can usually smell before can detect on sensor
31
Q

O2 range

A

19.5% - 23.5%

32
Q

Methane

A 
CH4
UN 1971
Strong reducer
Highly flammable
LEL = 5%
UEL = 15%
F.P. = -306 degrees
Auto ignition = 1,004 degrees
Lighter than air (VD = .55)
33
Q

APIE

A

Analyze
Plan
Implement
Evaluate

34
Q

What determines when we ground and bond when we transfer fuel?

A

When the flashpoint of the fuel is less than 100°

35
Q

Why do we ground and bond?

A

To disperse the electrical potential (ground) and equalize the electrical potential of the containers (bond)

HazMat (5 decks)

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