5007.9.1.1 Vehicle maintenance.

Cargo tanks shall not be used unless they are in good working order and free from accumulation of grease, oil or other flammable or combustible waste.

5007.9.1.2 Monitoring of loading and unloading.

The operator of a cargo tank shall not remain in the vehicle during loading or unloading of the cargo and shall personally supervise such operation from a location at which the operator may observe the vehicle, the delivery and vapor recovery hoses, the fill connection and any overfilling of the tank.

5007.9.1.3 Vehicle shutdown.

The cargo tank motor shall be shut down during the making and breaking of hose connections. If loading or unloading is performed without the use of a power pump, the cargo tank motor shall be shut down throughout such operations.

5007.9.1.4 Secured from movement.

All appropriate actions shall be taken to prevent vehicle movement during the loading and unloading of the cargo, including setting the parking brake and chocking of tires.

5007.9.1.5 Outage.

A cargo tank or compartment thereof shall not be loaded to absolute capacity. The vacant space in a cargo tank or compartment thereof shall not be less than 1 percent to prevent leakage from or distortion of such tank or compartment by expansion of the contents caused by a rise in temperature.