ADR tank special provision TT1
Pure aluminium tanks need initial and periodic hydraulic tests at only 250 kPa (2.5 bar) gauge.
Where the tank is made of pure aluminium, both the first and the periodic hydraulic pressure tests are carried out at a reduced pressure of 250 kPa (2.5 bar) gauge.
| Value | Applies when |
|---|---|
| 250 kPa | hydraulic test pressure (gauge) |
| 2.5 bar | same test pressure in bar |
Carried by 8 Table A entries
UN 1796 · UN 2014 · UN 2015 · UN 2031 · UN 2032 · UN 2984 · UN 3149
Source: ADR 2025 (ECE/TRANS/352), Volume II, section 6.8.4 (d), TT1, page 537.
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.