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CDL Practice Test: Tankers

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CDL Practice Test: Tankers

Tankers Questions

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Good Luck!

All of the following tanker-specific inspections are correct, except:
  • Make sure intake, discharge, and cut-off valves are in the correct position before loading, unloading or moving the vehicle
  • Make sure manhole covers and vents have gaskets and that they close correctly
  • Check pipes, connections and hoses for leaks
  • All of these inspections are true and correct
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).

Next
Unbaffled liquid tankers are sometimes called:
  • Smooth bore tanks
  • Selective range tanks
  • Unrestricted tanks
  • Free flow 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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While driving a liquid tanker around a curve, you should:
  • 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
  • Always drive the posted speed for a curve
  • 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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The amount of liquid to load into a tank depends on:
  • The weight of the liquid
  • Legal weight limits
  • All of these should be taken into consideration when loading liquid into a tank
  • The amount the liquid will expand in transit (outage)
This is a question from page 61 - click here to look up the answer

Quote From Page 85 Of The Illinois CDL Manual:

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
On all tank vehicles, the most important item to check for is:
  • Grounding and bonding cables are working properly
  • Leaks from the tank
  • Baffles are not damaged
  • Placards (if required) are present and undamaged
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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What is Outage?
  • When liquids expand as they warm
  • When liquids expand as they cool
  • When liquids condense as they cool
  • When liquids condense 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.
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Next
While driving a liquid tanker without Anti-Lock Brakes, all of the following statements are true, except:
  • Use controlled braking to avoid an accident
  • All of these answers are true
  • Use stab braking to avoid an accident
  • Steer quickly and swerve around a hazard while braking at the same time
This is a question from page 61 - click here to look up the answer

Quote From Page 85 Of The Illinois CDL Manual:

To drive tank vehicles safely, you must follow all safe driving rules:

Braking – If you must make a quick stop to avoid an accident, use controlled or stab braking. If you do not remember how to stop using these methods, review Section 2.13. Also, remember that if you steer quickly while braking, your vehicle may roll over.

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What is a Bulkhead?
  • A divider inside a tank to section off liquid or gas
  • Used to hold all liquid or gas to one side of the tank
  • A device that is placed on the top of liquid or gas and compresses it as low as possible to decrease the center of gravity
  • Used to elevate liquid to a higher center of gravity
This is a question from page 61 - click here to look up the answer

Quote From Page 84 Of The Illinois CDL Manual:

Some liquid tanks are divided into several smaller tanks by bulkheads. When loading and unloading the smaller tanks, the driver must pay attention to weight distribution. Do not put too much weight on the front or rear of the vehicle.

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