8 - Tank Vehicles

How are bulkheads different than baffles?

• Bulkheads are solid dividers that create separate liquid compartments, while baffles have holes that allow liquid to flow through, reducing surge.
• Bulkheads are used to strengthen the tank structure, whereas baffles are used to heat the liquid cargo.
• Bulkheads are designed to prevent liquid movement entirely, while baffles are designed to increase liquid movement.
• Bulkheads are external supports for the tank, whereas baffles are internal supports.

Should a tank vehicle take curves, on ramps, or off ramps at the posted speed limits?

• No, because tank vehicles should always exceed the posted speed limits to maintain momentum.
• Yes, as long as the driver is experienced and the road conditions are good.
• Yes, because the posted speed limits are set specifically for all vehicle types, including tank vehicles.
• No, because tank vehicles have a high center of gravity and can roll over at the posted speeds.

How are smooth bore tankers different to drive than those with baffles?

• Smooth bore tankers are designed for transporting solids, while baffled tankers are for liquids.
• Smooth bore tankers have internal baffles that prevent any liquid movement, making them more stable.
• Smooth bore tankers lack internal baffles, so the liquid can move more freely, increasing the risk of surge.
• Smooth bore tankers have a rough interior surface to reduce liquid movement, unlike baffled tankers.

What three things determine how much liquid you can load?

• The color of the liquid, the temperature outside, and the type of vehicle.
• The amount the liquid will expand in transit, the weight of the liquid, and legal weight limits.
• The destination distance, the driver's experience, and the time of day.
• The type of road, the weather conditions, and the speed limit.

What is outage?

• Leaving space in the tank to allow for liquid expansion.
• A term used to describe a tank leak.
• The process of unloading a tank.
• A measure of the tank's capacity.

How can you help control surge?

• By accelerating quickly and braking hard.
• By driving with the tank half full.
• By keeping a steady speed and avoiding sudden movements.
• By taking sharp turns at high speeds.

What two reasons make special care necessary when driving tank vehicles?

• Short length and light weight.
• Wide tires and heavy weight.
• Low center of gravity and solid cargo.
• High center of gravity and liquid movement.