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FLAMMABLE AND COMBUSTIBLE LIQUIDS 17.. Prior to beginning dispensing operations, pre- a suitable gauging device. To prevent overfilling, the cautions shall be taken to ensure ignition sources driver,operator or attendant shall not deliver in excess of are not present. that amount. 18. The engines of vehicles being fueled shall be shut 3406.6.1.6 Securing hatches. During loading, hatch off during dispensing operations. covers shall be secured on all but the receiving compart- 19. Nighttime fueling operations shall only take ment. place in adequately lighted areas. 3406.6.1.7 Liquid temperature.Materials shall not be 20. The tank vehicle shall be positioned with respect loaded into or transported in a tank vehicle at a tempera- to vehicles being fueled to prevent traffic from ture above the material's ignition temperature unless driving over the delivery hose, safeguarded in an approved manner, 21. During fueling operations, tank vehicle brakes 3406.6.1.8 Bonding to underground tanks.An exter- shall be set, chock blocks shall be in place and nal bond-wire connection or bond-wire integral with a warning lights shall be in operation. hose shall be provided for the transferring of flammable 22. Motor vehicletanksliquids through open connections into underground fuel shall not be topped off. tanks. 23. The dispensing hose shall be properly placed on 3406.6.1.9 Smoking.Smoking by tank vehicle drivers, an approved reel or in an approved compartment helpers or other personnel is prohibited while they arepn'or to moving the tank vehicle. driving, making deliveries, filling or making repairs to 24. The fire code official and other appropriate tank vehicles. • authorities shall be notified when a reportable spill or unauthorized discharge occurs. 3406.6.1.10 Hose connections.Delivery of flammable liquids to underground tanks with a capacity of more 3406.6 Tank vehicles and vehicle operation. Tank vehicles than 1,000 gallons(3785 L)shall be made by means of shall be designed, constructed, equipped and maintained in approved liquid and vapor-tight connections between the accordance with NFPA 385 and Sections 3406.6.1 through delivery hose and fill tank pipe. Where underground 3406.6.4. tanks are equipped with any type of vapor recovery sys- 3406.6.1 Operation of tank vehicles.Tank vehicles shall tem,all connections required to be made for the safe and be utilized and operat&fl in accordance with NFPA 385 and proper functioning of the particular vapor recovery pro- Sections 3406.6.1.1 through 3406.6.1.11. cess shall be made. Such connections shall be made liq- 3406.6.1.1 Vehicle maintenance. Tank vehicles shall uid and vapor tight and remain connected throughout the unloading process. Vapors shall not be discharged at not be operated unless they are in proper state of repair grade level during delivery. and free from accumulation of grease,oil or other flam- mable substance,and leaks. 3406.6.1.10.1 Simultaneous delivery.Simultaneous 3406.6.1.2 Leaving vehicle unattended. The driver, delivery to underground tanks of any capacity from operator or attendant of a tank vehicle shall not remain in two or more discharge hoses shall be made by means the vehicle cab and shall not leave the vehicle while it is of mechanically tight connections between the hose being filled or discharged. The delivery hose, when and fill pipe. attached to a tank vehicle,shall be considered to be a part 3406.6.1.11 Hose protection.Upon arrival at a point of of the tank vehicle. delivery and prior to discharging.any flammable or com- 3406.6.1.3 Vehicle motor shutdown. Motors of tank bustible liquids into underground tanks,the driver,oper- ator or attendant of the tank vehicle shall ensure that all vehicles or tractors shall be shut down during the making or breaking of hose connections.If loading or unloading hoses utilized for liquid delivery and vapor recovery, is performed without the use of a power pump,the tank where required,will be protected from physical damage by motor vehicles.Such protection shall be provided by vehicle or tractor motor shall be shut down throughout such operations. positioning the tank vehicle to prevent motor vehicles from passing through the area or areas occupied by 3406.6.1.4 Outage. A cargo tank or compartment hoses,or by other approved equivalent means. thereof used for the transportation of flammable or corn- 3406.6.2 Parking. Parking of tank vehicles shall be in hustible liquids shall not be loaded to absolute capacity. accordance with Sections 3406.6.2.1 through 3406.6.2.3. The vacant space in a cargo tank or compartment thereof used in the transportation of flammable or combustible Exception: In cases of accident, breakdown or other liquids shall not be less than 1 percent.Sufficient space emergencies,tank vehicles are allowed to be parked and shall be left vacant to prevent leakage from or distortion left unattended at any location while the operator is of such tank or compartment by expansion of the con- obtaining assistance. tents caused by rise in temperature in transit. 3406.6.2.1 Parking near residential,educational and 3406.6.1.5 Overfill protection.The driver, operator or institutional occupancies and other high-risk areas. attendant of a tank vehicle shall,before making delivery Tank vehicles shall not be left unattended at any time on to a tank,determine the unfilled capacity of such tank by residential streets,or within 500 feet(152 m)of a resi- 342 2006 INTERNATIONAL FIRE CODE®