L4DH

Hierarchy of tanks

Tanks with tank codes different from those indicated in this table or in Table A of Chapter 3.2 may also be used provided that any element (number or letter) of parts 1 to 4 of these tank codes correspond to a level of safety at least equivalent to the corresponding element of the tank code indicated in Table A of Chapter 3.2, according to the following increasing order:

Part 1: Types of tanks S  L

Part 2: Calculation pressure

G  1.5  2.65  4  10  15  21 bar

Part 3: Openings A  B  C  D

Part 4: Safety valves/devices V  F  N  H

For example:

• A tank with the tank code L10CN is authorized for the carriage of a substance to which the tank code L4BN has been assigned;

   

• A tank with the tank code L4BN is authorized for the carriage of a substance to which the tank code SGAN has been assigned.

E: The hierarchy does not take account of any special provisions for each entry (see 4.3.5 and

.8.4).