Dangerous Goods by Road
Insulated, refrigerated and mechanically-refrigerated vehicles intended for the carriage of temperature
controlled substances shall conform to the following conditions:
(a) the vehicle shall be such and so equipped as regards its insulation and means of refrigeration,
that the control temperature prescribed in 2.2.41.1.17 and 2.2.52.1.16 and in 2.2.41.4 and
2.2.52.4 for the substance to be carried is not exceeded. The overall heat transfer coefficient
shall be not more than 0.4 W/m2K;
(b) the vehicle shall be so equipped that vapours from the substances or the coolant carried cannot
penetrate into the driver's cab;
(c) a suitable device shall be provided enabling the temperature prevailing in the loading space to
be determined at any time from the cab;
(d) the loading space shall be provided with vents or ventilating valves if there is any risk of a
dangerous excess pressure arising therein. Care shall be taken where necessary to ensure that
refrigeration is not impaired by the vents or ventilating valves;
(e) the refrigerant shall not be flammable; and
(f) the refrigerating appliance of a mechanically refrigerated vehicle shall be capable of operating
independently of the engine used to propel the vehicle.
Suitable methods (see V8(3)) to prevent the control temperature from being exceeded are listed in
Chapter 7.2 (R1 to R5). Depending on the method used, additional provisions concerning the
construction of vehicle bodies may be included in Chapter 7.2.
ADDITIONAL REQUIREMENTS CONCERNING FIXED TANKS (TANK-VEHICLES), BATTERY-VEHICLES AND COMPLETE OR COMPLETED VEHICLES USED FOR THE CARRIAGE OF DANGEROUS GOODS IN DEMOUNTABLE TANKS WITH A CAPACITY GREATER THAN 1 M3 OR IN TANKCONTAINERS, PORTABLE TANKS OR MEGCs OF A CAPACITY GREATER THAN 3 M3 (EX/III, FL AND AT VEHICLES)
General provisions
In addition to the vehicle proper, or the units of running gear used in its stead, a tank-vehicle
comprises one or more shells, their items of equipment and the fittings for attaching them to the
vehicle or to the running-gear units.
Once the demountable tank has been attached to the carrier vehicle, the entire unit shall meet the
requirements prescribed for tank-vehicles.
Requirements concerning tanks
Fixed tanks or demountable tanks made of metal shall meet the relevant requirements of Chapter 6.8.
Elements of battery-vehicles and of MEGCs shall meet the relevant requirements of Chapter 6.2 in the
case of cylinders, tubes, pressure drums and bundles of cylinders and the requirements of Chapter 6.8
in the case of tanks.
Tank-containers made of metal shall meet the requirements of Chapter 6.8, portable tanks shall meet
the requirements of Chapter 6.7 or, if applicable, those of the IMDG Code (see 1.1.4.2).
Tanks made of fibrereinforced
plastics material shall meet the requirements of Chapter 6.9.
Vacuum-operated waste tanks shall meet the requirements of Chapter 6.10.
Fastenings
Fastenings shall be designed to withstand static and dynamic stresses in normal conditions of carriage,
and minimum stresses as defined in 6.8.2.1.2, 6.8.2.1.11 to 6.8.2.1.13, 6.8.2.1.15 and 6.8.2.1.16 in the
case of tank-vehicles, battery-vehicles, and vehicles carrying demountable tanks.
Earthing of FL vehicles
Tanks made of metal or of fibrereinforced
plastics material of FL tank-vehicles and battery elements
of FL batteryvehicles
shall be linked to the chassis by means of at least one good electrical
connection. Any metal contact capable of causing electrochemical corrosion shall be avoided.
NOTE: See also 6.9.1.2 and 6.9.2.14.3.