ADR tank special provision TU22
Fill to no more than 90 % of capacity; for liquids leave 5 % empty at an average liquid temperature of 50 °C.
The tank may be filled to at most 90 % of its capacity. For liquid cargoes, 5 % of the space must still be empty when the liquid is at a mean temperature of 50 °C.
| Value | Applies when |
|---|---|
| 90 % | maximum degree of filling |
| 5 % | ullage that must remain for liquids |
| 50 °C | average liquid temperature at which the 5 % ullage applies |
Carried by 14 Table A entries
UN 1402 · UN 1928 · UN 2813 · UN 2965 · UN 3131 · UN 3391 · UN 3392 · UN 3393 · UN 3394 · UN 3395 · UN 3396 · UN 3398 · UN 3399
Source: ADR 2025 (ECE/TRANS/352), Volume II, section 4.3.5, TU22, page 225.
Paraphrase in FreightUtils' own words, not the official text. Not yet reviewed.
ADR 2027 amendments (accepted, applying from 1 January 2027) are not yet reflected on this page.