Questions and Answers
What must you do when approaching a curve as an operator?
Slow down before curves and accelerate slightly through the curve.
You should always fill your tank to its maximum capacity?
False
A full tank vehicle will take longer to stop than an empty vehicle?
False
How do wet roads affect a tank vehicle's stopping distance?
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What three factors can cause a vehicle to skid?
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What are the two braking methods used to make a quick stop?
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What must you do before loading or driving a tank equipped vehicle?
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You are required to have a tank endorsement when transporting ___ liquid gallons in a permanent mounted cargo tank and ____ gallons in a portable tank.
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What reference can you use to ensure you know to inspect your tank equipped vehicle?
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What is considered the most important item to visually inspect for on a tank vehicle?
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What does it mean when a vehicle is top-heavy?
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Additional room left for expansion is also known as what?
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What must you consider regarding how much liquid you can load?
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What are the four special purpose equipment items that you must inspect on the tank vehicle?
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What are three things you can do to control the surge of a liquid?
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What are two reasons to make special care necessary when driving a tank vehicle?
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What is the difference between bulkheads and a baffle?
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Is it safe to operate tank vehicles in a curve on ramps or off-ramps at the posted speed limits or higher?
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A smooth bore tanker has stronger forward/back surge than a tanker with baffles?
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What is liquid surge?
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Study Notes
Tanker Operation Essentials
- Approach curves with caution by slowing down beforehand and accelerating slightly while navigating the curve to maintain control.
- Do not fill the tank to maximum capacity; liquid expands during transit and legal weight limits must be considered.
Stopping and Skidding
- A fully loaded tank vehicle does not take longer to stop than an empty one; the vehicle’s weight assists in slowing down.
- Wet road conditions can double a tank vehicle’s stopping distance, emphasizing the need for cautious driving.
- Skidding can be induced by three factors: over steering, over accelerating, and over braking.
Braking Techniques
- Quick stops can be achieved using two braking methods: controlled braking and stab braking.
Vehicle Inspection and Regulations
- Always conduct a thorough vehicle inspection before loading or driving a tank-equipped vehicle.
- A tank endorsement is needed for transporting 119 liquid gallons in a permanently mounted cargo tank and 1000 gallons in a portable tank.
- Consult the operator's technical manual for guidance on vehicle inspections.
Key Safety Considerations
- Leaks are the most critical issue to visually inspect on a tank vehicle.
- A vehicle described as "top heavy" tends to have a high center of gravity, increasing rollover risk.
- Outage refers to the additional room left in the tank for liquid expansion.
Loading Considerations
- Consider factors like liquid expansion, vehicle weight, and weight limits when determining the liquid load capacity.
- Four essential items to inspect on a tank vehicle include: vapor recovery kit, ground/bonding cables, emergency shut-off system, and fire extinguishers.
Liquid Control Strategies
- Control liquid surging by increasing following distance, applying steady brake pressure, and braking well in advance.
- Special caution is required when driving tank vehicles due to the high center of gravity and liquid movement within the tank.
Tank Design Differences
- Bulkheads are solid walls within the tank, while baffles are designed with holes allowing liquid to flow through, reducing surge.
Operating Speeds and Safety
- Never operate tank vehicles through curves on ramps or off-ramps at posted speed limits or higher, as reduced speeds are necessary for safe navigation.
- Smooth bore tankers experience more severe forward and backward surge compared to tankers equipped with baffles.
Understanding Liquid Movement
- Liquid surge refers to the longitudinal movement of liquid in a tank that isn't fully filled, affecting vehicle stability during transit.
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Description
Test your knowledge on tanker operations with these flashcards. Learn important safety precautions and operational guidelines, such as proper handling of curves and tank filling protocols. Perfect for aspiring tanker drivers looking to enhance their understanding.
