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CDL Practice Test: Tankers

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CDL Practice Test: Tankers

Tankers Questions

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Good Luck!

What is Liquid Surge?
  • None of these answers are correct
  • When liquid naturally swirls inside of a tank
  • Results from movement of the liquid in partially filled tanks
  • If the tank is punctured, the liquid will rush out of the opening
This is a question from page 61 - click here to look up the answer

Quote From Page 84 Of The Illinois CDL Manual:

Liquid surge results from movement of the liquid in partially filled tanks. This movement can have bad effects on handling. For example, when coming to a stop, the liquid will surge back and forth. When the wave hits the end of the tank, it tends to push the truck in the direction the wave is moving. If the truck is on a slippery surface such as ice, the wave can shove a stopped truck out into an intersection. The driver of a liquid tanker must be very familiar with the handling of the vehicle.

TruckingTruth's Advice:

Liquid surge can result from nearly any conceivable movement. Steering left, right, accelerating, or slowing down can all cause liquid to surge. Even after stopping a liquid filled tanker, the liquid will surge back, then forward again, possibly forcing your truck to "jump" forward once more. That's why it's good practice to stay further back from vehicles, even when stopped.

Next
How much do liquids expand as they warm?
  • Liquids expand at 1kg/m per 10 degree increase
  • Most liquids do not expand when heated
  • None of these answers are correct
  • different liquids expand by different amounts
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.

Prev
Next
While driving a liquid tanker around a curve, you should:
  • Understand that the posted speed for a curve may be too fast for a tank vehicle
  • Always drive the posted speed for a curve
  • Be confident that your lower center of gravity will reduce the risk of a rollover
  • 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 expand as they cool
  • When liquids condense as they warm
  • When liquids condense as they cool
  • 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
Unbaffled liquid tankers are sometimes called:
  • Unrestricted tanks
  • Free flow tanks
  • Smooth bore tanks
  • Selective range tanks
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.

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Next
What type of tanker trailers are normally unbaffled?
  • All tanker trucks are equipped with baffles
  • Tankers designed to haul non-liquid products
  • Fuel tankers
  • Food grade tankers
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.

Prev
Next
What term describes the following statement: Liquids expand as they warm and you must leave room for the expanding liquid.
  • None of these answers are correct
  • Outage
  • Contraction
  • Frontage
This is a question from page 61 - click here to look up the answer

Quote From Page 85 Of The Illinois CDL Manual:

Liquids expand as they warm and you must leave room for the expanding liquid. This is called "outage."

Prev
Next
Why don't most food grade tankers come equipped with baffles?
  • Food grade tankers are required to be fitted with baffles or bulkheads
  • To save room in the tank, most shippers of liquid food products prefer to forgo baffles so more product can be loaded
  • Sanitation regulations forbid the use of baffles because of the difficulty in cleaning the inside of the tank
  • Food products are generally light enough that the entire tank can be filled, thus, limiting any liquid surge
This is a question from page 61 - click here to look up the answer

Quote From Page 84 Of The Illinois CDL Manual:

Sanitation regulations forbid the use of baffles because of the difficulty in cleaning the inside of the tank.

TruckingTruth's Advice:

Anytime you see a food grade tanker, it is safe to assume there are no baffles installed. Not only is that important for you to know when pulling a food grade tanker, but you can also drive differently around other vehicles that are pulling food grade tankers (give them more room).

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