Which action should be completed immediately after the filling process?

• A. Check for leaks with non corrosive leak detector solution
• B. gravity fill method and dead man valve must be held open by operator
• C. service and filled connections
• D. DOT special permits

Answer: (A)

After filling a propane cylinder, the immediate action is to check for leaks with a non corrosive leak detector solution. This step verifies that the valve, fittings, and connections are not leaking under pressure, which is crucial for safety. Using a non corrosive solution prevents damage to the cylinder and valves while you test. If bubbles appear at any joint or connection, that indicates a leak and the cylinder must be repaired and retested before it’s put into service.

The other steps described relate to the filling procedure itself or regulatory paperwork, not something you do right after filling.