When unloading Compressed Gas (Class 2), if you use the engine to run a pump, when should you turn it off?

Before unhooking the delivery hose. Section 9.5.4: If you use the engine, turn it off after product transfer, before you unhook the hose.

When unloading Compressed Gas (Class 2), if you use the engine to run a pump, when should you turn it off?

ANSWER BREAKDOWN
  • A. Correct. If you use the engine, turn it off after product transfer, before you unhook the hose.
  • B. Incorrect. "After unhooking the delivery hose" is not correct. If you use the engine, turn it off after product transfer, before you unhook the hose.
  • C. Incorrect. "You don't need to turn it off" is not correct. If you use the engine, turn it off after product transfer, before you unhook the hose.
  • D. Incorrect. "As soon as the tank is half empty" is not correct. If you use the engine, turn it off after product transfer, before you unhook the hose.