Which item is crucial for ensuring safety during the loading and unloading of cargo tank vehicles?

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Chock blocks are essential for ensuring safety during the loading and unloading of cargo tank vehicles because they serve to stabilize the vehicle and prevent accidental movement. When a cargo tank is being loaded or unloaded, any unintended movement can lead to dangerous situations, such as spills, drops, or accidents. By placing chock blocks against the tires, the vehicle is securely positioned, which minimizes the risk of it rolling or shifting during these operations.

While gas detectors, reflective vests, and fire extinguishers are important safety tools in general, they address different aspects of safety. Gas detectors help in identifying leaks or hazardous fumes, reflective vests enhance visibility for personnel, and fire extinguishers are critical for emergency responses. However, chock blocks specifically focus on the stabilization of the vehicle itself, making them a crucial safety item in the specific context of loading and unloading operations.

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