CDL Tanker Endorsement Practice Exam

When pumping or unloading liquids from a tanker, how far should a helper stand back?

1. 10 feet

2. 15 feet

3. 25 feet

4. 30 feet

The correct answer is: 25 feet

When pumping or unloading liquids from a tanker, having a helper stand back a distance of 25 feet is crucial for maintaining safety. This specific distance ensures that the helper is sufficiently far away from potential hazards associated with the unloading process. These hazards can include spills, splashes, or the sudden release of pressurized liquids, any of which can pose a serious risk to safety. By maintaining a distance of 25 feet, the helper remains in a safer position, allowing them to monitor the unloading process without being in the immediate danger zone. This level of caution is especially important when dealing with hazardous materials or flammable liquids, where even a small mistake or unexpected occurrence can lead to severe consequences. Additionally, the 25-foot guideline helps ensure that the unloading can be done smoothly and with appropriate oversight while minimizing risk to personnel.