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CDL Practice Test: Tankers

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CDL Practice Test: Tankers

Tankers Questions

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Good Luck!

Baffled tanks are:
  • Designed to contain several solid bulkheads
  • Liquid tanks with several bulkheads containing holes that liquid can flow through
  • Used only for gas products
  • Tanks without any bulkheads
This is a question from page 61 - click here to look up the answer

Quote From Page 84 Of The Illinois CDL Manual:

Baffled liquid tanks have bulkheads in them with holes that let the liquid flow through. The baffles help to control the forward and backward liquid surge. Side-to-side surge can still occur. This can cause a roll over.

Next
All of the following tanker-specific inspections are correct, except:
  • Make sure manhole covers and vents have gaskets and that they close correctly
  • Make sure intake, discharge, and cut-off valves are in the correct position before loading, unloading or moving the vehicle
  • All of these inspections are true and correct
  • Check pipes, connections and hoses for leaks
This is a question from page 60 - click here to look up the answer

Quote From Page 84 Of The Illinois CDL Manual:

On all tank vehicles, the most important item to check for is leaks. Check under and around the vehicle for signs of any leaking. Do not carry liquids or gases in a leaking tank. In general, check the following:

  • Tank body or shell for dents or leaks.
  • Intake, discharge and cut-off valves. Make sure valves are in correct position before loading, unloading or moving the vehicle.
  • Pipes, connections and hoses for leaks, especially around joints.
  • Manhole covers and vents. Make sure covers have gaskets and that they close correctly. Keep vents clear so they work correctly.
  • Special purpose equipment. If your vehicle has any of the following equipment, make sure it works:
    • Vapor recovery kits.
    • Grounding and bonding cables.
    • Emergency shut-off systems.
    • Built-in fire extinguisher.

Make sure you know how to operate your special equipment. Check the emergency equipment required for your vehicle. Find out what equipment you are required to carry and make sure you have it (and it works).

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Next
What are unbaffled tanks?
  • There are no barriers inside to slow down or stop liquid from surging
  • Liquid is held in place by multiple barriers, restricting liquid surge
  • Small tanks which are loaded and secured onto flatbed trailers
  • There are barriers in the tank with holes in them to slow down and restrict surging liquid
This is a question from page 61 - click here to look up the answer

Quote From Page 84 Of The Illinois CDL Manual:

Unbaffled liquid tankers (sometimes called "smooth bore" tanks) have nothing inside to slow down the flow of the liquid. Therefore, forward-and-back surge is very strong. Unbaffled tanks are usually those that transport food products (e.g., milk). (Sanitation regulations forbid the use of baffles because of the difficulty in cleaning the inside of the tank.) Be extremely cautious (slow and careful) in driving smooth bore tanks, especially when starting and stopping.

TruckingTruth's Advice:

Unbaffled tankers are much more dangerous to drive, especially when the tanks aren't completely full, as liquid can surge and slosh around in any direction hindering vehicle control.

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Next
All of the following require a Tanker endorsement, except:
  • Portable tank with a rated capacity of 10,000 gallons
  • Large tanks of more than 1,000 gallons enclosed in a box trailer
  • Portable tanks with a rated capacity of less than 1,000 gallons
  • Tank that is permanently attached to the vehicle chassis
This is a question from page 60 - click here to look up the answer

Quote From Page 84 Of The Illinois CDL Manual:

A "tank vehicle" is used to carry any liquid or gaseous material in a tank that is permanently or temporarily attached to the vehicle or chassis. However, this does not include portable tanks with a rated capacity of less than 1,000 gallons.

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Next
When loading a tank, you should:
  • Expect liquid to evaporate and lighten your gross weight over time
  • Use disposable baffles and barriers when hauling food grade tankers
  • Never load a cargo tank so that it's totally full
  • Always load a cargo tank with "filler" so that it's completely filled
This is a question from page 61 - click here to look up the answer

Quote From Page 85 Of The Illinois CDL Manual:

Never load a cargo tank totally full. Liquids expand as they warm and you must leave room for the expanding liquid. This is called "outage." Since different liquids expand by different amounts, they require different amounts of outage. You must know the outage requirement when hauling liquids in bulk.

A full tank of dense liquid (such as some acids) may exceed legal weight limits. For that reason, you often may only partially fill tanks with heavy liquids. The amount of liquid to load into a tank depends on:

  • The amount the liquid will expand in transit.
  • The weight of the liquid.
  • Legal weight limits.
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Next
While driving a liquid tanker around a curve, you should:
  • Always drive the posted speed for a curve
  • Be confident that your lower center of gravity will reduce the risk of a rollover
  • Understand that the posted speed for a curve may be too fast for a tank vehicle
  • Use quick steering movements to keep liquids from collecting on one side
This is a question from page 61 - click here to look up the answer

Quote From Page 85 Of The Illinois CDL Manual:

Curves: Slow down before curves, then accelerate slightly through the curve. The posted speed for a curve may be too fast for a tank vehicle.

TruckingTruth's Advice:

All maneuvers in a tanker truck should be made slower and smoother than other vehicle types.

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Next
What is Outage?
  • When liquids condense as they cool
  • When liquids expand as they cool
  • When liquids condense as they warm
  • When liquids expand as they warm
This is a question from page 61 - click here to look up the answer

Quote From Page 85 Of The Illinois CDL Manual:

Never load a cargo tank totally full. Liquids expand as they warm and you must leave room for the expanding liquid. This is called "outage." Since different liquids expand by different amounts, they require different amounts of outage. You must know the outage requirement when hauling liquids in bulk.

A full tank of dense liquid (such as some acids) may exceed legal weight limits. For that reason, you often may only partially fill tanks with heavy liquids. The amount of liquid to load into a tank depends on:

  • The amount the liquid will expand in transit.
  • The weight of the liquid.
  • Legal weight limits.
Prev
Next
On all tank vehicles, the most important item to check for is:
  • Grounding and bonding cables are working properly
  • Placards (if required) are present and undamaged
  • Leaks from the tank
  • Baffles are not damaged
This is a question from page 60 - click here to look up the answer

Quote From Page 84 Of The Illinois CDL Manual:

On all tank vehicles, the most important item to check for is leaks. Check under and around the vehicle for signs of any leaking. Do not carry liquids or gases in a leaking tank.

TruckingTruth's Advice:

While there are many other items which can be considered the "most important", most state manuals specifically state that checking for leaks is the most important inspection.

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