ADR tank code L4DN(+)

ADR tank code for Classes 1 and 3–9: liquid tank, 4 bar, openings D, valves/devices N, suffix (+).

L4DN(+) is decoded part by part from the 4.3.4.1.1 table for Classes 1 and 3–9. Part 1 "L" is a tank for liquid-state substances (liquids, or solids handed over molten); part 2 "4" is minimum calculation pressure of 4 bar (see 6.8.2.1.14). Part 3 "D" (openings): filled and discharged from the top; nothing opens below the liquid surface. Part 4 "N" (safety valves/devices): the tank has no 6.8.2.2.6 breather device and is not hermetically closed. The "(+)" restricts the tank: it may be used alternately for other substances only if its certificate of type approval allows it, and the column (13) special provisions complete the requirements (4.3.4.1.3). The code gives the least stringent tank accepted; others may be used under the hierarchy in 4.3.4.1.2.

Note. Tank codes permitted in place of this one: see the rationalized approach and hierarchy in 4.3.4.1.2 (Volume II pages 217–222); not computed here. L4DN is printed in the 4.3.4.1.3 list on page 222, whose columns read scrambled in the extraction; the UN numbers it applies to should be read from that list.

Refers to: 4.3.4.1.1; 4.3.4.1.2; 6.8.2.1.14; 6.8.2.2.2; 6.8.2.2.6; 1.2.1; 4.3.4.1.3.

Carried by 1 Table A entry

UN 1873