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.

9.7

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.

Stability of tank-vehicles

 
The overall width of the ground-level bearing surface (distance between the outer points of contact
with the ground of the right-hand tyre and the left-hand tyre of the same axle) shall be at least 
equal to 90% of the height of the centre of gravity of the laden tank-vehicle. In an articulated 
vehicle the mass on the axles of the load-carrying unit of the laden semi-trailer shall not exceed 
60% of the nominal
total laden mass of the complete articulated vehicle.
 
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