T8 PORTABLE TANK INSTRUCTION T8
The general provisions of section 4.2.1 and the requirements of section 6.7.2 shall be met.
Minimum test pressure 4 bar
Minimum shell thickness (reference steel) 5 mm for tanks up to 1.80 m diameter and for larger tanks carrying solids of packing group II or III; 6 mm otherwise.
Pressure-relief provisions Normal
Bottom opening provisions Not allowed
Alternatives permitted T9, T10, T13, T14, T19, T20, T21, T22

Special packing provisions:

TP2
The degree of filling prescribed in 4.2.1.9.3 shall not be exceeded.
TP13
Self-contained breathing apparatus shall be provided when this substance is transported, unless no self-contained breathing apparatus, as required by SOLAS regulation II-2/19 (II-2/54), is on board.
TP28
A portable tank having a minimum test pressure of 2.65 bar may be used if it is shown that a test pressure of 2.65 bar or less is acceptable according to the test pressure definition in 6.7.2.1.