Final answer:
Chock blocks for a cargo tank vehicle are required to be used when the vehicle is being loaded or unloaded to prevent it from rolling or moving. They are made of sturdy materials and are placed in front of and behind the wheels. Proper positioning and securing of chock blocks is important for their effectiveness.
Step-by-step explanation:
Chock blocks for a cargo tank vehicle are required to be used when the vehicle is being loaded or unloaded. These blocks are used to prevent the vehicle from rolling or moving during the loading or unloading process. They are typically made of sturdy materials like wood or rubber and are placed in front of and behind the wheels of the vehicle to keep it stationary.
Chock blocks are important for safety reasons. They help prevent accidents and ensure that the cargo tank vehicle remains stable during loading and unloading operations. By using chock blocks, the risk of the vehicle rolling or moving unexpectedly is significantly reduced, protecting both the personnel involved and the cargo being transported.
It is important to properly position and secure the chock blocks to ensure their effectiveness. They should be placed in direct contact with the wheels and firmly wedged against them to prevent any movement. Additionally, the surface where the chock blocks are placed should be stable and level to provide maximum support.