©EXAM STUDY MATERIAL 8/9/2024 11:50 AM
Ifsta Hazmat 6th edition Final Exam With
Verified Questions and Answers
List the four major container types - answer✔✔Pressure, Cryogenic, Liquid-holding, solid-
holding
How are pressure containers likely to fail - answer✔✔Release form pressure relief devices/
damaged fittings, runaway cracking, punctures, splits, tears, accidents
Two common ways that cryogenic tanks malfunction or release - answer✔✔Releases from
pressure relief devices and/or damaged fittings
What are common dispersion patterns for a liquid container - answer✔✔Streams and pools
How are solids-holding containers usually damaged - answer✔✔Mechanical Stressors
What is the pressure in pressure tanks - answer✔✔15psi or greater
If a cryogen is released from its container, what are its hazards - answer✔✔Displace 02 and
some will create explosive enviroment
Why is it a priority to eliminate ignition sources at incidents that involve low pressure storage
tanks - answer✔✔Contain flammable and combustible liquids with low vapor pressure
What can cause water in the bottom of a nonpressure/atmosphere storage tank to boil and expand
more than 1600 times in volume - answer✔✔Residues from surface burning become denser than
unburned product and sink. Layer reaches water at the bottom and causes the water to boil and
pushes product out of tank. (boilover, froth-over, slop-over)
What are some clues to the presence of an underground storage tank - answer✔✔Fill and vent
connections above ground
What type of hazardous (and non) materials are carried by cargo tank trucks -
answer✔✔Nonpressure cargo, low pressure chemical, corrosive liquid, high pressure cargo,
cryogenic cargo, compressed-gas/tube, dry bulk
, ©EXAM STUDY MATERIAL 8/9/2024 11:50 AM
How can you recognize nonpressure cargo tank trucks - answer✔✔oval cross section, bottom
valves, longitudinal rollover protection, valve assembly and unloading control box under tank,
multi compartments, emergency shutoff on driver side
What type of cargo do low pressure chemical tank trucks carry - answer✔✔Liquids including
flammable/ combustible liquids, mild corrosives, and some toxics/ poisons
How many compartments do corrosive liquid tank trucks typically have - answer✔✔Usually
only one
What features identify Mc-331 or Tc-331 cargo tank trucks - answer✔✔Bolted access point,
inlet and outlet valves, white or relflective paint scheme, large hemi heads on both ends, guard
cage around bottom piping, emergency shutoffs left, front, rear
What features identify Mc-338, TC-338, or TC-341 cryo tank trucks - answer✔✔Relief valves to
discharge nonhaz vapor, round tanks w/ flat ends, large/bulky double shelling and heavy
insulation, refer liquid markings, emergency shutoff at left front and right rear
How can you recognize compressed-gas/ tube trailers - answer✔✔individual steel cylinders
stacked and mounted together with pressure relief device for each cylinder
What types of hazardous cargo do dry bulk cargo trailers transport - answer✔✔Solids such as
oxidizers, corrosives, cement, plastic pellets, and fertilizers
How can you visually identify a low pressure tank car - answer✔✔cylindrical with rounded ends
Why does an evacuation zone tend to be large when dealing with an incident involving a
pressure tank car - answer✔✔Capacities are large, exposed to heat or flame they will fail
catastrophically, ERG gives initial isolation zone of 1 mile
How long is a cry tank designed to protect contents from ambient temp - answer✔✔Up to 30
days
Where are railcar reporting marks located - answer✔✔Both sides and both ends
What info does the capacity stencil give - answer✔✔Amount of product
Where can you find specification markings - answer✔✔Both sides of tank (opposite from
reporting marks)
What makes intermodal containers so efficient for shopping - answer✔✔Can be used
interchangeably in multiple modes of transport without unloading and reloading cargo
What are the required markings for intermodal tanks and containers - answer✔✔Placards,
reporting markings, Hazmat must of shipping name on two sides with the tank owners name
