Since various liquids expand at different rates, the endorsement tests will assess your knowledge of how much outage is required. It is required that you leave extra room (outage) for this expansion. Outage- a liquid can expand when heated causing the tank to overflow. Depending on what you are carrying in the tank, you will also be tested on vapor recovery kits, emergency shutoff, built-in extinguishers, bonding cables, and automatic fire suppression system. Special purpose equipment and procedures- an endorsement test will cover tankers’ additional, specialized equipment, including Personal Protective Equipment (PPE) or safety and emergency equipment. Remember you can be fined or shutdown if you are driving leaking tankers. You also need to learn how to check the under-frame and frame equipment for signs of leaks. Tank vehicles inspection- tankers are more complex than other types of vehicles and require specialized valves, piping, and handling systems.
The questions are derived from the section 8 of the CDL manual and will cover the following topics.
The tanker endorsement test entails 20 multiple choice questions, which you have to attain at least 80 percent to pass.
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