Recreational Vehicle (RV) Technician Practice Test

When transporting a DOT propane cylinder you should?

1. Leave it open

2. Install a dust cap

3. Secure it inside the vehicle

4. Inspect it for leaks

The correct answer is: Install a dust cap

When transporting a DOT propane cylinder, it's essential to ensure that the cylinder is adequately protected from dirt and debris that can compromise its safety and functionality. Installing a dust cap serves to cover the valve, preventing contaminants from entering it during transport. This is particularly important because any foreign materials could create leaks or hazardous situations when the cylinder is connected to a propane system later on. While securing the cylinder inside the vehicle and inspecting it for leaks are important safety practices, they do not specifically address the protection of the valve from dust and debris during transport. Leaving the cylinder open poses a severe safety risk by allowing gas to escape, which could lead to leaks or explosions. Therefore, using a dust cap is the correct procedure to ensure that the cylinder remains safe and secure while being transported.