Haz Flashcards
Four clues to identify hazmat?
- Type of occupancy and location of fixed facility
- Labels, markers, and placards
- Shape and design of containers involved
- Shipping papers or facility documents
What zone is lobby sector in?
Warm zone without turnouts
The rate at which a chemical reaction occurs depends on what four things?
- Temperature
- Concentration
- Pressure
- Catalyst present
Placards generally indicate the
____ of the most dangerous property being transported
Primary hazard
Four digit ID number may replace class name for ____ shipments
Bulk
Subsidiary placards maybe used to indicate____
Secondary hazards
Name “table 1” hazardous materials that must be placarded
Explosive 1.1, 1.2, 1.3 Poison gas 2.3 Dangerous when wet 4.3 Inhaled poison 6.1 Radioactive 7
Certain categories of materials must always be placarded with their primary hazard placards, regardless of the amount of materials being transported. These are referred to as ____ because they appear in ____ of the placard section of the ____.
Table 1 materials
Table 1
Code of Federal Regulations
DOT placards are diamond shaped and how big?
10 3/4
Name seven table 1 categories
Explosives 1.1 Explosives 1.2 Explosives 1.3 Poison gas class 2.3 Dangerous when wet 4.3 Poison gas 6.1 Radioactive 7
In general all other classes of hazardous materials (_____) must be placarded for bulk shipments of more than ____ of that material
Table 2 materials
1000 lbs
I
The dangerous placard can be used if a shipment non-bulk packages of ____ or more ____ Materials if the total amount of each is less then ____ loaded at one location
2
Table 2
5000 LBS
DOT labels are ____ or smaller for cylinders affixed to non-bulk packages of hazardous materials
4 inch diamond or smaller
Both placards and labels convey information by what ways?
Color Symbol UN label Hazardous class number Hazardous class wording 4 digit ID number
Background color for placards: Orange = Red = Red w/white band in center = Green = White over red= White equals=
Explosive Flammability/combustible Dangerous Nonflammable gas Spontaneous combustible Poisonous
Background color for placards:
White with vertical red stripes= Yellow = White over yellow = White over black = Blue = Black stripes over white =
Flammable solid Oxidizer (inc.02) or organic peroxide Radio active Corrosive Dangerous when wet Miscellaneous.hazmat
The ____ Placard is only required on railcars
Residue
The ____ hazard class number must appear in the bottom of diamond on both placards and labels. Division numbers for ____ and ____.
UN
Oxidizers and organic peroxide
UN and division numbers are not required for ____
Subsidiary placards
Name the 9 classes:
- Explosives
- Gases
- Flammable/combustible liquids
- Flammable solid/dangerous when wet/spontaneously combustible
- Oxidizers/organic peroxides
- Poisonous/infections material
- Radio active
- Corrosive
- ORMs - other regulated material
NFPA 704 marking system: Diamond colors Red – Blue – White – Yellow –
Flammability
Health
Special hazards
Reactivity
Pesticides must be marked with one of what three labels?
Danger
Warning
Caution
Pesticides are regulated by who?
EPA
Benzine causes what?
Cancer
Want are the amounts for hazmat bulk liquids?
119 gallons
882 pounds of solid
1000 pounds of gases
Cargo tanks built before ____ must conform to new DOT specs.
August 31, 1993
Pressure cargo tank characteristics
– Rounded heads
– Top 2/3 of tank reflective or white or can be whole tank
– Usually have flammable gas for compressed gas
Low-pressure cargo tank characteristics
– Circular in cross-section with flatheads
– From behind horseshoe shaped cross-sections
– Rollover protection at manhole
– catwalk
Non-pressure cargo tank characteristics
– Elliptical – Flatheads – Compartmentalized with own manholes – Catwalk – Rollover protection – Fuel for hazmat
Corrosive liquid cargo tank characteristics
– Circular cross-sections with flatheads
– Smaller diameter secondary to heavier load
– Visible stiffening rings vertically around tank
– Discolored
Cryogenic liquid cargo tank characteristics
– Carry gases that are liquefied
– Bulky appearance Secondary to insulation
– Circular cross-sections with rounded heads
– Fill piping valves and pumps are in cabinet or station at Center or rear
– Relief valves
Tube trailers and Dry Bulk commodity carrier characteristics
– Tube trailers; carry gases under pressure and not a liquefied gas
– Dry Bulk; large, sloping, V shaped unloading compartments located at bottom of compartments and rear mounted air compressor
When a rail incident occurs ___ are often the best sources of information
Railroad personnel
Most rail tank cars are
Single commodity
One feature that is added to pressure tank cars transporting hazmat is
Headshield
Required for non-pressure tanks caring ethylene oxide
Pressure tank car characteristics
– Carry flammable or nonflammable compressed gases or poisonous gases compressed
– Top loading W/pressure 100–600
– 4000–45,000 gallon capacity
– Fittings/relief valves/pipes at top center in man way cover
– Housing 18–24 inches tall and 30–36 inches in diameter
– Insulated
– Painted with white with red stripes for hydrochloric acid
– 2/3 white
Non-pressure tank cars characteristics
– A.k.a. as general service for low-pressure
– Vapor pressure below 25 psig at 105–115°F
– Test pressure at 60–100 psig
– 4000 to 45,000 gallon capacity
Visible manway cover fittings at top of tank
– Up to 6 compartments
Corrosive liquid tank characteristics
– Staining or corrosion around manway
– Painted with wide band of corrosion resistant paint running vertically around man way
Cryogenic liquid tank car characteristics
– Low-pressure 25 psig and lower – 30°F and below – Tank within a tank –Stainless and nickel tanks – Protects for 30 days
High pressure tube cars characteristics
– 40 foot box type open frame
– 30 seamless non-insulated
40 foot steel cylinders
– Test pressure at 3000–5000 psig
Covered hopper cars characteristics
– Carry dry commodities
– Test pressure at 20–80 psig
– Two or more cone shaped cylinders at bottom connected by pipe that is 4 inch in diameter
