ADR tank code P22DH(M)

ADR tank code for Class 2 gases: liquefied/dissolved gas tank, 22 bar, openings D, hermetically closed, suffix (M).

P22DH(M) is decoded part by part from the 4.3.3.1.1 table for Class 2 gases. Part 1 "P" is a tank, battery-vehicle or MEGC for liquefied or dissolved gases; part 2 "22" is minimum calculation pressure of 22 bar. Part 3 "D" (openings): tank filled or discharged from the top through openings having 3 closures; or a battery-vehicle/MEGC with nothing opening below the liquid surface. Part 4 "H" (safety valves/devices): the tank is hermetically closed (see 1.2.1). The "(M)" after the code means the gas may also go in battery-vehicles or MEGCs. The code gives the least stringent tank accepted; others may be used under the hierarchy in 4.3.3.1.2.

Note. Tank codes permitted in place of this one: see the hierarchy in 4.3.3.1.2 (Volume II page 208); not computed here. The (M) suffix is explained in 3.2.1 under column (12) (Volume I page 297), not in the 4.3.3.1.1 table.

Refers to: 4.3.3.1.1; 4.3.3.1.2; 4.3.3.2.5; 6.8.3.2.9; 6.8.3.2.10; 1.2.1; 6.8.2.2; 6.8.3.2.

Carried by 2 Table A entries

UN 1017 · UN 1076